WO2010026697A1 - §§dispositif d'émission/réception - Google Patents

§§dispositif d'émission/réception Download PDF

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Publication number
WO2010026697A1
WO2010026697A1 PCT/JP2009/003524 JP2009003524W WO2010026697A1 WO 2010026697 A1 WO2010026697 A1 WO 2010026697A1 JP 2009003524 W JP2009003524 W JP 2009003524W WO 2010026697 A1 WO2010026697 A1 WO 2010026697A1
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Prior art keywords
signal
frequency
converter
analog
digital
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PCT/JP2009/003524
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English (en)
Japanese (ja)
Inventor
兒玉浩志
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日本電気株式会社
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Priority to JP2010527663A priority Critical patent/JP5445459B2/ja
Publication of WO2010026697A1 publication Critical patent/WO2010026697A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0067—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands
    • H04B1/0082—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands with a common local oscillator for more than one band
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
    • H04B1/406—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with more than one transmission mode, e.g. analog and digital modes

Definitions

  • the present invention relates to a transceiver, and more particularly to a transceiver capable of transmitting and receiving signals of a plurality of wireless standards or a plurality of bands (band groups).
  • Non-Patent Document 1 discloses a configuration example of a transceiver capable of transmitting and receiving signals of a plurality of wireless standards or a plurality of bands (band groups) (hereinafter simply referred to as a plurality of wireless systems).
  • the transceiver disclosed in Non-Patent Document 1 is used for transmitting and receiving signals of a plurality of wireless systems by one chip.
  • FIG. 21 is a diagram showing a configuration of a transmission / reception circuit disclosed in Non-Patent Document 1.
  • this transmission / reception circuit includes a VCO (Voltage Controlled Oscillator) 5113, a reception circuit 5101 corresponding to the first wireless system, a reception circuit 5102 corresponding to the second wireless system, A transmission circuit 5103 corresponding to the wireless system, a transmission circuit 5104 corresponding to the second wireless system, and a frequency converter 5116 are provided.
  • VCO Voltage Controlled Oscillator
  • the reception circuit 5101 includes a first analog down-converter 5105 and a first digital down-converter 5106.
  • a reception RF (RadioRad Frequency) signal 5151 corresponding to the first wireless system is input, and the first wireless system
  • a reception BB (Base Band) signal 5155 corresponding to is output.
  • the reception circuit 5102 includes a second digital down-converter 5107 and a second analog down-converter 5108, and receives a reception RF signal 5152 corresponding to the second wireless system and receives corresponding to the second wireless system.
  • the BB signal 5156 is output.
  • the transmission circuit 5103 includes a first analog up-converter 5109 and a first digital up-converter 5110, receives a transmission BB signal 5157 corresponding to the first wireless system, and corresponds to the first wireless system.
  • a transmission RF signal 5153 is output.
  • the transmission circuit 5104 includes a second digital up-converter 5111 and a second analog up-converter 5112, inputs a transmission BB signal 5158 corresponding to the second wireless system, and corresponds to the second wireless system.
  • a transmission RF signal 5154 is output.
  • the output signal 5159 of the VCO 5113 is input to the frequency converter 5116, the second analog down converter 5108, and the second analog up converter 5112.
  • the frequency converter 5116 receives the output signal 5159, performs frequency conversion, and outputs the converted signal to the first analog up-converter 5109 and the first analog down-converter 5105.
  • the frequency of the VCO 5113 is adjusted so as to be equal to N times the carrier frequency.
  • feedback loop control such as PLL (Phase Locked Loop) is usually used, and it takes time until the frequency is stabilized.
  • received RF signal 5151 is down-converted by local signal 5160 and converted to received BB signal 5155.
  • transmission RF signal 5153 is generated by up-converting transmission BB signal 5157 with local signal 5160. It is assumed that frequency converter 5116 multiplies the input frequency by 1 / N.
  • the frequency of the VCO 5113 is adjusted again so as to be equal to the carrier frequency. Again, it takes time for the frequency to stabilize.
  • the reception RF signal 5152 is down-converted by the local signal 5159 and the transmission BB signal 5158 is up-converted as in the case corresponding to the first radio system.
  • Patent Document 1 discloses a configuration example of a wireless device that supports a plurality of wireless communication systems.
  • the second embodiment describes a dual-mode oscillator incorporating a first voltage-controlled oscillator and a second voltage-controlled oscillator that are switched by those of GSM900 or DCS1800.
  • Non-Patent Document 1 there is a problem with the configuration of the transceiver disclosed in Non-Patent Document 1. That is, there is a problem that it is not possible to operate simultaneously corresponding to a plurality of wireless systems. The cause of this problem is that the frequency adjustment of the VCO is required for each carrier signal frequency of each wireless system, and that the time required for this frequency adjustment is long.
  • the wireless device disclosed in Patent Document 1 corresponds to a plurality of wireless systems by switching paths in the quadrature modulator output signal separation means, and enables simultaneous operation in the plurality of wireless systems. is not.
  • An object of the present invention is to provide a transceiver that can operate simultaneously in a plurality of wireless systems.
  • the transceiver of the present invention includes a first communication circuit corresponding to a first wireless system, a second communication circuit corresponding to a second wireless system, the first communication circuit, and the second communication circuit.
  • An oscillator that generates a common frequency signal common to both of them, and a frequency that converts the frequency of the common frequency signal generated by the oscillator and supplies a local signal to the first communication circuit or the second communication circuit And a converter.
  • the transceiver is a wireless communication device capable of transmitting and receiving signals of a plurality of wireless standards or a plurality of bands (band groups).
  • FIG. 1 shows the basic configuration of the transceiver. As shown in FIG. 1, the transceiver includes a first communication circuit 1a corresponding to the first wireless system, a second communication circuit 1b corresponding to the second wireless system, and a first communication circuit 1a.
  • An oscillator 2 that generates a common frequency signal common to both of the second communication circuits 1b, and a frequency conversion of the common frequency signal generated by the oscillator 2 to the first communication circuit 1a or the second communication circuit 1b Frequency converters (here, the first frequency converter 3a and the second frequency converter 3b) for supplying local signals.
  • the common frequency signal common to both the first communication circuit 1a and the second communication circuit 1b is generated by the oscillator 2, and these signals are generated by the first frequency converter 3a and the second frequency signal. Conversion is performed so that either one or both of the frequency converters 3b can be supplied as a local signal to the first communication circuit 1a and the second communication circuit 1b. Therefore, it is not necessary to adjust the oscillator 2 between the case where communication is performed using the first wireless system and the case where communication is performed using the second wireless system, and therefore it is possible to operate simultaneously on a plurality of wireless systems.
  • FIG. 2 is a block diagram showing a configuration of the transceiver according to the first embodiment of the invention.
  • the transceiver includes a receiving circuit 1101 corresponding to the first wireless system, a receiving circuit 1102 corresponding to the second wireless system, a transmitting circuit 1103 corresponding to the first wireless system, and a second wireless system.
  • a fourth frequency converter 1119 is a fourth frequency converter 1119.
  • the reception circuit 1101 corresponding to the first wireless system and the transmission circuit 1103 corresponding to the first wireless system constitute a first communication circuit corresponding to the first wireless system.
  • the receiving circuit 1102 corresponding to the second wireless system and the transmitting circuit 1104 corresponding to the second wireless system constitute a second communication circuit corresponding to the second wireless system.
  • the first VCO 1113 functions as an oscillator that generates a common frequency signal common to both the first communication circuit and the second communication circuit.
  • the first frequency converter 1116 and the second frequency converter 1117 perform frequency conversion on the common frequency signal generated by the first VCO 1113, and the first frequency converter 1116 and the second frequency converter 1117 It functions as a frequency converter that supplies local signals.
  • the reception circuit 1101 corresponding to the first wireless system receives an analog down converter 1105 to which the first RF reception signal 1151 is input and an output signal from the analog down converter 1105 as an input.
  • a first digital down converter 1106 that outputs a BB signal 1155 is provided.
  • the analog down converter and the analog up converter may be collectively referred to as “analog converter”, and the digital down converter and the digital up converter may be collectively referred to as “digital converter”. .
  • the reception circuit 1102 corresponding to the second radio system receives the analog down converter 1108 to which the second RF reception signal 1152 is input, and the output signal from the analog down converter 1108, and outputs the reception BB signal 1156.
  • the second digital down converter 1107 is provided.
  • a transmission circuit 1103 corresponding to the first radio system inputs a first analog upconverter 1109 that outputs an RF transmission signal 1153 and a transmission BB signal 1157 and outputs an input signal to the analog upconverter 1109.
  • a first digital upconverter 1110 is provided.
  • a transmission circuit 1104 corresponding to the second wireless system inputs a second analog upconverter 1112 that outputs an RF transmission signal 1154 and a transmission BB signal 1158 and outputs an input signal to the analog upconverter 1112.
  • a second digital up-converter 1111 is provided.
  • the first VCO 1113 outputs a signal 1159 having a predetermined oscillation frequency.
  • the signal 1159 is a common frequency signal common to the transmission / reception circuits 1101 and 1103 corresponding to the first wireless system and the transmission / reception circuits 1102 and 1104 corresponding to the second wireless system.
  • the second VCO 1114 outputs a signal 1164 having a predetermined oscillation frequency.
  • the third VCO 1115 outputs a signal 1165 having a predetermined oscillation frequency.
  • the first frequency converter 1116 converts the frequency of the output signal 1159 of the first VCO 1113 and supplies a local signal 1160 to the first analog down converter 1105 and the first analog up converter 1109. .
  • the second frequency converter 1117 converts the frequency of the output signal 1159 of the first VCO 1113 and supplies a local signal 1161 to the second analog down converter 1108 and the second analog up converter 1112. .
  • the third frequency converter 1118 converts the frequency of the output signal 1164 of the second VCO 1114 and supplies a local signal 1162 to the first digital down converter 1106 and the first digital up converter 1110. .
  • the fourth frequency converter 1119 converts the frequency of the output signal 1165 of the third VCO 1115 and supplies a local signal 1163 to the second digital down converter 1107 and the second digital up converter 1111. .
  • analog up-converter and analog down-converter perform frequency conversion of analog signals
  • digital up-converter and digital down-converter perform frequency conversion of digital signals, respectively.
  • an AD converter or a DA converter is used for conversion between an analog signal and a digital signal.
  • the circuit shown in FIG. 14 is an LC-VCO using an inductor.
  • this type of VCO has a drawback that the area of the inductor is large, the phase noise is low and high-frequency operation is easy. Note that the area of the inductor can be reduced as the frequency increases.
  • the IQ signal required for quadrature modulation / demodulation can be obtained by inputting the output signal of the VCO to a polyphase filter or a frequency divider.
  • the circuit shown in FIG. 15 is a non-inductor-type ring VCO that does not use an inductor.
  • this type of VCO has the disadvantage that phase noise is poor and high-frequency operation is difficult, the area is small and spurious due to coupling between VCOs is small. Further, by setting the number of ring stages to an even number, an IQ signal required for orthogonal modulation / demodulation can be easily generated.
  • the circuit shown in FIG. 16 is configured by combining two LC-VCOs.
  • a feature of this type of VCO is that, in addition to the same features as the circuit shown in FIG. 14, an IQ signal required for quadrature modulation / demodulation can be generated.
  • the circuit shown in FIG. 17 is a 1/2 frequency converter (frequency divider) using a flip-flop.
  • a 1 / N frequency divider (N is a natural number) can be configured by combining a plurality of flip-flops and logic circuits. Note that an injection locking type frequency divider can also be used when dividing an ultrahigh frequency input signal.
  • the circuit shown in FIG. 18 is a non-integer frequency converter (frequency divider) including a multiphase clock generation circuit, a phase interpolation circuit, and an accumulator.
  • the frequency division ratio of this frequency divider is, for example, 8 / (8 + N) (where N is an integer from 1 to 7) in the case of 45 degree phase interpolation.
  • the circuit shown in FIG. 19 is a frequency converter using an SSB (Single Side Side Band) mixer. This type of frequency converter can increase the frequency, unlike the circuits shown in FIGS.
  • the frequency conversion ratio is (1 ⁇ 1 / N).
  • the frequency of each local signal is as follows: the oscillation frequency of the first VCO 1113 is fVCO1, the oscillation frequency of the second VCO 1114 is fVCO2, the oscillation frequency of the third VCO 1115 is fVCO3, and the frequency conversion ratios of the frequency converters 1116 to 1119 are Assuming N / M, L / K, P / O, and R / Q, respectively, they are expressed as follows.
  • M to Q are integers of 1 or more.
  • the frequency of the local signal 1160 for the first analog down converter 1105 and the first analog up converter 1109 is as follows.
  • the frequency of the local signal 1161 for the second analog downconverter 1108 and the second analog upconverter 1112 is as follows.
  • the frequency of the local signal 1162 for the first digital upconverter 1110 and the first digital downconverter 1106 is as follows.
  • the frequency of the local signal 1163 for the second digital upconverter 1111 and the second digital downconverter 1107 is as follows.
  • reception RF signal 1151 corresponding to the first radio system and the carrier signal frequency fc1 of the transmission RF signal 1153 corresponding to the first radio system have a relationship represented by the following equation.
  • the reception RF signal 1152 corresponding to the second radio system and the carrier signal frequency fc2 of the transmission RF signal 1154 corresponding to the second radio system have a relationship represented by the following expression.
  • carrier signal frequencies of various wireless systems can be generated by appropriately selecting the values of the first to third VCO frequencies fVCO1, fVCO2, and fVCO3 and the frequency conversion ratios N to Q.
  • a plurality of local signal frequencies can be generated without adjusting the VCO frequency during transmission / reception, thereby enabling simultaneous transmission / reception.
  • the transmitter / receiver concerning this Embodiment has shown the example of a transmission / reception structure of two radio systems, it will be understood easily by those skilled in the art that it can be extended also to transmission / reception of three or more radio systems.
  • the frequency of the VCO is set in the case of performing communication corresponding to the first radio system and in the case of performing communication corresponding to the second radio system.
  • the frequency of the VCO being transmitted / received is substantially fixed, the frequency signal generated by this VCO is converted by a frequency converter, and a local frequency having an appropriate frequency in each circuit (converter) Since the signal is generated, it is not necessary to switch the frequency of the VCO, and transmission / reception can be realized in a plurality of wireless systems at the same time.
  • UWB Ultra Wide Band
  • the frequency fVCO1 of the first VCO 1113 is set higher than the frequencies fVCO2 and fVCO3 of the second VCO 1114 and the third VCO 1115.
  • the sampling rate of the AD converter or DA converter can be lowered, and the design difficulty of the AD converter or DA converter is alleviated.
  • a common frequency signal common to the transceiver circuit corresponding to the first wireless system and the transceiver circuit corresponding to the second wireless system is generated in one first VCO 1113. Since no spurious problem due to inductor coupling occurs, a VCO using an inductor can be used.
  • the frequency of the VCO of the second VCO 1114 and the third VCO 1115 is lower than that of the first VCO 1113, a ring VCO that does not use an inductor can be used. It is valid. If a high-speed AD converter or DA converter can be easily designed by miniaturization of the process technology, the frequency fVCO1 of the first VCO is lowered and the frequency fVCO2 of the second and third VCOs is lowered. , FVCO3 can also be set to increase.
  • FIG. 3 is a block diagram showing a configuration of a transceiver according to the second embodiment of the invention.
  • the transceiver includes a receiving circuit 1201 corresponding to the first wireless system, a receiving circuit 1202 corresponding to the second wireless system, a transmitting circuit 1203 corresponding to the first wireless system, and a second wireless system.
  • the reception circuit 1201 corresponding to the first radio system receives an analog down converter 1205 to which the first RF reception signal 1251 is input, and an output signal from the analog down converter 1205 as an input, and receives a BB signal.
  • a first digital down converter 1206 that outputs 1255 is provided.
  • a reception circuit 1202 corresponding to the second radio system receives an analog down converter 1208 to which the second RF reception signal 1252 is input, and an output signal from the analog down converter 1208, and outputs a reception BB signal 1256.
  • a second digital down converter 1207 is provided.
  • a transmission circuit 1203 corresponding to the first wireless system inputs a first analog upconverter 1209 that outputs an RF transmission signal 1253 and a transmission BB signal 1257 and outputs an input signal to the analog upconverter 1209.
  • a first digital upconverter 1210 is provided.
  • a transmission circuit 1204 corresponding to the second radio system inputs a second analog up-converter 1212 that outputs an RF transmission signal 1254 and a transmission BB signal 1258 and outputs an input signal to the analog up-converter 1212.
  • a second digital upconverter 1211 is provided.
  • the first VCO 1213 outputs a signal 1259 having a predetermined oscillation frequency.
  • the second VCO 1214 outputs a signal 1264 having a predetermined oscillation frequency.
  • the first frequency converter 1216 converts the frequency of the output signal 1259 of the first VCO 1213 and supplies a local signal 1260 to the first analog down converter 1205 and the first analog up converter 1209. .
  • the second frequency converter 1217 converts the frequency of the output signal 1259 of the first VCO 1213 and supplies a local signal 1261 to the second analog down converter 1208 and the second analog up converter 1212. .
  • the third frequency converter 1218 converts the frequency of the output signal 1264 of the second VCO 1214 and supplies a local signal 1262 to the first digital down converter 1206 and the first digital up converter 1210. .
  • the fourth frequency converter 1219 converts the frequency of the local signal 1261 supplied from the second frequency converter 1217 to the second digital down converter 1207 and the second digital up converter 1211. A local signal 1263 is supplied.
  • analog up-converter and analog down-converter perform frequency conversion of analog signals
  • digital up-converter and digital down-converter perform frequency conversion of digital signals, respectively.
  • an AD converter or a DA converter is used for conversion between an analog signal and a digital signal.
  • the frequency of each local signal includes the oscillation frequency of the first VCO 1213 as fVCO1, the oscillation frequency of the second VCO 1214 as fVCO2, and the frequency conversion ratios of the frequency converters 1216 to 1219 as N / M, L / K, and P, respectively. Assuming / O and R / Q, they are expressed as follows.
  • M to Q are integers of 1 or more.
  • the frequency of the local signal 1260 for the first analog downconverter 1205 and the first analog upconverter 1209 is as follows.
  • the frequency of the local signal 1261 for the second analog down converter 1208 and the second analog up converter 1212 is as follows.
  • the frequency of the local signal 1262 for the first digital upconverter 1210 and the first digital downconverter 1206 is as follows.
  • the frequency of the local signal 1263 for the second digital upconverter 1211 and the second digital downconverter 1207 is as follows.
  • reception RF signal 1251 corresponding to the first radio system and the carrier signal frequency fc1 of the transmission RF signal 1253 corresponding to the first radio system have a relationship represented by the following equation.
  • the reception RF signal 1252 corresponding to the second radio system and the carrier signal frequency fc2 of the transmission RF signal 1254 corresponding to the second radio system have a relationship represented by the following equation.
  • the transceiver according to the second embodiment of the present invention achieves the same effect as the transceiver according to the first embodiment of the invention, and further, compared with the first embodiment of the invention, the VCO Since the number is small, the area can be saved and the power consumption can be reduced.
  • FIG. 4 is a block diagram showing a configuration of a transceiver according to the third embodiment of the invention.
  • the transceiver includes a receiving circuit 1801 corresponding to the first wireless system, a receiving circuit 1802 corresponding to the second wireless system, a transmitting circuit 1803 corresponding to the first wireless system, and a second wireless system.
  • the reception circuit 1801 corresponding to the first wireless system receives an analog down converter 1805 to which the first RF reception signal 1851 is input and an output signal from the analog down converter 1805 as an input, and receives a BB signal.
  • a first digital down converter 1806 for outputting 1855 is provided.
  • a reception circuit 1802 corresponding to the second wireless system receives an analog down converter 1808 to which the second RF reception signal 1852 is input, an output signal from the analog down converter 1808, and outputs a reception BB signal 1856.
  • a second digital down converter 1807 is provided.
  • a transmission circuit 1803 corresponding to the first radio system inputs a first analog upconverter 1809 that outputs an RF transmission signal 1853 and a transmission BB signal 1857 and outputs an input signal to the analog upconverter 1809.
  • a first digital upconverter 1810 is provided.
  • a transmission circuit 1804 corresponding to the second wireless system inputs a second analog up-converter 1812 that outputs an RF transmission signal 1854 and a transmission BB signal 1858 and outputs an input signal to the analog up-converter 1812.
  • a second digital upconverter 1811 is provided.
  • the first VCO 1813 outputs a signal 1859 having a predetermined oscillation frequency.
  • the second VCO 1814 outputs a signal 1864 having a predetermined oscillation frequency.
  • the first frequency converter 1816 converts the frequency of the output signal 1859 of the first VCO 1813 and supplies a local signal 1860 to the first analog down converter 1805 and the first analog up converter 1809. .
  • the second frequency converter 1817 converts the frequency of the output signal 1859 of the first VCO 1813 and supplies a local signal 1861 to the second analog down converter 1808 and the second analog up converter 1812. .
  • the third frequency converter 1818 converts the frequency of the output signal 1864 of the second VCO 1814 and provides a local signal 1862 to the first digital down converter 1806 and the first digital up converter 1810. .
  • the fourth frequency converter 1819 converts the frequency of the output signal 1864 of the second VCO 1814 and supplies a local signal 1863 to the second digital down converter 1807 and the second digital up converter 1811. .
  • analog up-converter and analog down-converter perform frequency conversion of analog signals
  • digital up-converter and digital down-converter perform frequency conversion of digital signals, respectively.
  • an AD converter or a DA converter is used for conversion between an analog signal and a digital signal.
  • the frequency of each local signal is as follows: the oscillation frequency of the first VCO 1813 is fVCO1, the oscillation frequency of the second VCO 1814 is fVCO2, and the frequency conversion ratios of the frequency converters 1816 to 1819 are N / M, L / K, P, respectively. Assuming / O and R / Q, they are expressed as follows.
  • M to Q are integers of 1 or more.
  • the frequency of the local signal 1860 for the first analog downconverter 1805 and the first analog upconverter 1809 is as follows.
  • the frequency of the local signal 1861 for the second analog downconverter 1808 and the second analog upconverter 1812 is as follows.
  • the frequency of the local signal 1862 for the first digital upconverter 1810 and the first digital downconverter 1806 is as follows.
  • the frequency of the local signal 1863 for the second digital upconverter 1811 and the second digital downconverter 1807 is as follows.
  • reception RF signal 1851 corresponding to the first radio system and the carrier signal frequency fc1 of the transmission RF signal 1853 corresponding to the first radio system have a relationship represented by the following equation.
  • reception RF signal 1852 corresponding to the second radio system and the carrier signal frequency fc2 of the transmission RF signal 1854 corresponding to the second radio system have a relationship represented by the following expression.
  • the transceiver according to the third embodiment of the present invention achieves the same effect as the transceiver according to the first embodiment of the invention, and further, compared with the first embodiment of the invention, the VCO Since the number is small, the area can be saved and the power consumption can be reduced.
  • FIG. 5 is a block diagram showing a configuration of a transceiver according to the fourth embodiment of the invention.
  • the transceiver includes a reception circuit 1301 corresponding to the first wireless system, a reception circuit 1302 corresponding to the second wireless system, a transmission circuit 1303 corresponding to the first wireless system, and a second wireless system.
  • Corresponding transmission circuit 1304, first VCO 1313, first frequency converter 1316, second frequency converter 1317, third frequency converter 1318, and fourth frequency converter 1319 are provided. ing.
  • the reception circuit 1301 corresponding to the first wireless system receives an analog down converter 1305 to which the first RF reception signal 1351 is input, and an output signal from the analog down converter 1305 as an input, and receives a BB signal.
  • a first digital down converter 1306 for outputting 1355 is provided.
  • a reception circuit 1302 corresponding to the second radio system receives an analog down converter 1308 to which the second RF reception signal 1352 is input, and an output signal from the analog down converter 1308, and outputs a reception BB signal 1356.
  • a second digital down converter 1307 is provided.
  • a transmission circuit 1303 corresponding to the first wireless system inputs a first analog upconverter 1309 that outputs an RF transmission signal 1353 and a transmission BB signal 1357 and outputs an input signal to the analog upconverter 1309.
  • a first digital upconverter 1310 is provided.
  • a transmission circuit 1304 corresponding to the second radio system inputs a second analog up-converter 1312 that outputs an RF transmission signal 1354 and a transmission BB signal 1358 and outputs an input signal to the analog up-converter 1312.
  • a second digital up-converter 1311 is provided.
  • the first VCO 1313 outputs a signal 1359 having a predetermined oscillation frequency.
  • the first frequency converter 1316 converts the frequency of the output signal 1359 of the first VCO 1313 and supplies a local signal 1360 to the first analog down converter 1305 and the first analog up converter 1309. .
  • the second frequency converter 1317 converts the frequency of the output signal 1359 of the first VCO 1313 and supplies a local signal 1361 to the second analog down converter 1308 and the second analog up converter 1312. .
  • the third frequency converter 1318 converts the frequency of the local signal 1360 supplied from the first frequency converter 1316 to the first digital down converter 1306 and the first digital up converter 1310. A local signal 1362 is provided.
  • the fourth frequency converter 1319 converts the frequency of the local signal 1361 supplied from the second frequency converter 1317 to the second digital down converter 1307 and the second digital up converter 1311. A local signal 1363 is supplied.
  • analog up-converter and analog down-converter perform frequency conversion of analog signals
  • digital up-converter and digital down-converter perform frequency conversion of digital signals, respectively.
  • an AD converter or a DA converter is used for conversion between an analog signal and a digital signal.
  • the frequency of each local signal is as follows, assuming that the oscillation frequency of the first VCO 1313 is fVCO1, and the frequency conversion ratios of the frequency converters 1316 to 1319 are N / M, L / K, P / O, and R / Q, respectively. It is expressed as Here, M to Q are integers of 1 or more.
  • the frequency of the local signal 1360 for the first analog downconverter 1305 and the first analog upconverter 1309 is as follows.
  • the frequency of the local signal 1361 for the second analog down converter 1308 and the second analog up converter 1312 is as follows.
  • the frequency of the local signal 1362 for the first digital upconverter 1310 and the first digital downconverter 1306 is as follows.
  • the frequency of the local signal 1363 for the second digital upconverter 1311 and the second digital downconverter 1307 is as follows.
  • reception RF signal 1351 corresponding to the first radio system and the carrier signal frequency fc1 of the transmission RF signal 1353 corresponding to the first radio system have a relationship represented by the following equation.
  • reception RF signal 1352 corresponding to the second radio system and the carrier signal frequency fc2 of the transmission RF signal 1354 corresponding to the second radio system have a relationship represented by the following expression.
  • the transceiver according to the second exemplary embodiment of the present invention achieves the same effects as the transceiver according to the first exemplary embodiment of the present invention, and further compared to the first, second, and third exemplary embodiments of the present invention.
  • the number of VCOs is small, the area can be saved and the power consumption can be reduced.
  • FIG. 6 is a block diagram showing a configuration of a transceiver according to the fifth embodiment of the invention.
  • the transceiver includes a receiving circuit 1401 corresponding to the first wireless system, a receiving circuit 1402 corresponding to the second wireless system, a transmitting circuit 1403 corresponding to the first wireless system, and a second wireless system.
  • a corresponding transmission circuit 1404, a first VCO 1413, a second VCO 1414, a first frequency converter 1416, a second frequency converter 1417, and a third frequency converter 1418 are provided.
  • the reception circuit 1401 corresponding to the first radio system receives an analog down converter 1405 to which the first RF reception signal 1451 is input and an output signal from the analog down converter 1405 as an input, and receives a BB signal.
  • a first digital down converter 1406 that outputs 1455 is provided.
  • a reception circuit 1402 corresponding to the second radio system receives an analog down converter 1408 to which the second RF reception signal 1452 is input, and an output signal from the analog down converter 1408, and outputs a reception BB signal 1456.
  • a second digital down converter 1407 is provided.
  • a transmission circuit 1403 corresponding to the first radio system inputs a first analog upconverter 1409 that outputs an RF transmission signal 1453 and a transmission BB signal 1457 and outputs an input signal to the analog upconverter 1409.
  • a first digital upconverter 1410 is provided.
  • a transmission circuit 1404 corresponding to the second radio system inputs a second analog up-converter 1412 that outputs an RF transmission signal 1454 and a transmission BB signal 1458 and outputs an input signal to the analog down-converter 1412.
  • a second digital up-converter 1411 is provided.
  • the first VCO 1413 outputs a signal 1459 having a predetermined oscillation frequency.
  • the second VCO 1414 outputs a signal 1464 having a predetermined oscillation frequency.
  • the first frequency converter 1416 converts the frequency of the output signal 1459 of the first VCO 1413 and supplies a local signal 1460 to the first analog down converter 1405 and the first analog up converter 1409. .
  • the second frequency converter 1417 converts the frequency of the output signal 1459 of the first VCO 1413 and supplies a local signal 1461 to the second analog down converter 1408 and the second analog up converter 1412. .
  • the third frequency converter 1418 converts the frequency of the output signal 1464 of the second VCO 1414 and provides a local signal 1462 to the first digital downconverter 1406 and the first digital upconverter 1410. .
  • analog up-converter and analog down-converter perform frequency conversion of analog signals
  • digital up-converter and digital down-converter perform frequency conversion of digital signals, respectively.
  • an AD converter or a DA converter is used for conversion between an analog signal and a digital signal.
  • the frequency of each local signal is as follows: the oscillation frequency of the first VCO 1413 is fVCO1, the oscillation frequency of the second VCO 1414 is fVCO2, and the frequency conversion ratios of the frequency converters 1416 to 1418 are N / M, L / K, P, respectively. Assuming / O, it is expressed as follows.
  • M to P are integers of 1 or more.
  • the frequency of the local signal 1460 for the first analog downconverter 1405 and the first analog upconverter 1409 is as follows.
  • the frequency of the local signal 1461 for the second analog down converter 1408 and the second analog up / down converter 1412 is as follows.
  • the frequency of the local signal 1462 for the first digital upconverter 1410 and the first digital downconverter 1406 is as follows.
  • reception RF signal 1451 corresponding to the first radio system and the carrier signal frequency fc1 of the transmission RF signal 1453 corresponding to the first radio system have a relationship represented by the following expression.
  • reception RF signal 1452 corresponding to the second radio system and the carrier signal frequency fc2 of the transmission RF signal 1454 corresponding to the second radio system have a relationship represented by the following expression.
  • the transceiver according to the fifth embodiment of the invention achieves the same effect as the transceiver according to the first embodiment of the invention, and further, the number of VCOs compared to the first embodiment of the invention. Therefore, it is possible to reduce the area and power consumption.
  • FIG. 11 is a block diagram showing the configuration of a UWB transceiver that can be operated simultaneously in UWB band groups 3 and 4. Since each band group is composed of 3 bands, wideband transmission is possible with this configuration having a signal band for 6 bands.
  • the UWB transceiver includes a reception amplifier 3101, a transmission amplifier 3102, a first analog downconverter 3103, a second analog downconverter 3104, a first analog upconverter 3105, Second analog up converter 3106, first analog BB circuit 3107, second analog BB circuit 3108, third analog BB circuit 3109, fourth analog BB circuit 3110, first digital BB circuit 3111, second Digital BB circuit 3112, third digital BB circuit 3113, fourth digital BB circuit 3114, multiplexer 3115, demultiplexer 3116, first VCO 3117, first frequency divider 3118, second frequency divider 3119, Adder circuit 3120, second VCO 3121 And a third frequency divider 3122.
  • the reception RF signal 3151 is input to the reception amplifier 3101.
  • the transmission RF signal 3152 is output from the transmission amplifier 3102.
  • An output signal 3153 is output from the reception amplifier 3101, and an output signal 3155 is output from the first analog down converter 3103.
  • An output signal 3156 is output from the second analog down converter 3104.
  • An output signal 3157 is output from the third analog BB circuit 3109.
  • An output signal 3158 is output from the fourth analog BB circuit 3110.
  • An output signal 3159 is output from the first analog BB circuit 3107.
  • An output signal 3160 is output from the second analog BB circuit 3108.
  • An output signal 3161 is output from the third digital BB circuit 3113.
  • An output signal 3162 is output from the fourth digital BB circuit 3114.
  • An output signal 3163 is output from the first digital BB circuit 3111.
  • An output signal 3164 is output from the second digital BB circuit 3112.
  • An input signal 3165 is input to the third digital BB circuit 3113.
  • An input signal 3166 is input to the fourth digital BB circuit 3114.
  • An output signal 3167 is output from the multiplexer 3115.
  • An input signal 3168 is input to the demultiplexer 3116.
  • a signal 3170 obtained by frequency-dividing the oscillation frequency signal 3169 of the first VCO 3117 by two by the first frequency divider 3118 is converted into the first analog down converter 3103 and the first frequency converter 3103. Supplyed to the analog upconverter 3105.
  • the signal 3171 obtained by first dividing the oscillation frequency signal 3169 of the first VCO 3117 by 3 by the second frequency divider 3119 becomes the second analog downconverter 3104 and the second analog downconverter 3104.
  • a signal 3172 obtained by dividing the oscillation frequency signal 3173 of the second VCO 3121 by 4 by the third frequency divider 3122 is supplied to the digital down converter and the digital up converter.
  • each frequency is 17.424 GHz in the first VCO 3117, 8.712 GHz in the output of the first divider 3118, 5.808 GHz in the output of the second divider 3119, and in the second VCO 3121. 5.28 GHz, and the output of the third frequency divider 3122 is 1.32 GHz.
  • FIG. 22 is a diagram showing a UWB band group defined in the WiMedia standard.
  • FIG. 23 is a diagram illustrating a band having a specific configuration in which the fifth embodiment is applied to UWB. As shown in FIG. 23, the output frequency of the first frequency divider 3118 is the center frequency of the band group 4, and the sum of the output frequency of the second frequency divider 3119 and the output frequency of the third frequency divider 3122 is obtained. The frequency is the center frequency of band group 3. Various combinations of these frequencies can be selected.
  • the reception amplifier 3101 and the transmission amplifier 3102 can be shared.
  • FIG. 7 is a block diagram showing a configuration of a transceiver according to the sixth embodiment of the invention.
  • the transceiver includes a receiving circuit 1501 corresponding to the first wireless system, a receiving circuit 1502 corresponding to the second wireless system, a transmitting circuit 1503 corresponding to the first wireless system, and a second wireless system.
  • Corresponding transmission circuit 1504, first VCO 1513, first frequency converter 1516, and second frequency converter 1517 are provided.
  • the reception circuit 1501 corresponding to the first radio system receives an analog down converter 1505 to which the first RF reception signal 1551 is input and an output signal from the analog down converter 1505 as an input, and receives a BB signal.
  • a first digital down converter 1506 that outputs 1555 is provided.
  • the reception circuit 1502 corresponding to the second radio system receives an analog down converter 1508 to which the second RF reception signal 1552 is input, an output signal from the analog down converter 1508, and outputs a reception BB signal 1556.
  • the second digital down converter 1507 is provided.
  • a transmission circuit 1503 corresponding to the first radio system inputs a first analog upconverter 1509 that outputs an RF transmission signal 1553 and a transmission BB signal 1557 and outputs an input signal to the analog upconverter 1509.
  • a first digital upconverter 1510 is provided.
  • a transmission circuit 1504 corresponding to the second radio system inputs a second analog up-converter 1512 that outputs an RF transmission signal 1554 and a transmission BB signal 1558 and outputs an input signal to the analog up-converter 1512.
  • a second digital up-converter 1511 is provided.
  • the first VCO 1513 outputs a signal 1559 having a predetermined oscillation frequency.
  • the first frequency converter 1516 converts the frequency of the output signal 1559 of the first VCO 1513 and supplies a local signal 1560 to the first analog down converter 1505 and the first analog up converter 1509. .
  • the second frequency converter 1517 converts the frequency of the output signal 1559 of the first VCO 1513 and supplies a local signal 1561 to the second analog down converter 1508 and the second analog up converter 1512. .
  • analog up-converter and analog down-converter perform frequency conversion of analog signals
  • digital up-converter and digital down-converter perform frequency conversion of digital signals, respectively.
  • an AD converter or a DA converter is used for conversion between an analog signal and a digital signal.
  • the frequency of each local signal is expressed as follows, where the oscillation frequency of the first VCO 1513 is fVCO1, and the frequency conversion ratios of the frequency converters 1516 and 1517 are N / M and L / K, respectively.
  • M to K are integers of 1 or more.
  • the frequency of the local signal 1560 for the first analog downconverter 1505 and the first analog upconverter 1509 is as follows.
  • the frequency of the local signal 1561 for the second analog down converter 1508 and the second analog up converter 1512 is as follows.
  • reception RF signal 1551 corresponding to the first radio system and the carrier signal frequency fc1 of the transmission RF signal 1553 corresponding to the first radio system have a relationship represented by the following equation.
  • reception RF signal 1552 corresponding to the second radio system and the carrier signal frequency fc2 of the transmission RF signal 1554 corresponding to the second radio system have a relationship represented by the following expression.
  • the transceiver according to the sixth embodiment of the present invention achieves the same effect as the transceiver according to the first embodiment of the present invention, and further compared to the first, second, and third embodiments of the present invention.
  • the number of VCOs is small, the area can be saved and the power consumption can be reduced.
  • the output signal 1559 of the first VCO 1513 is converted into local signals 1560 and 1561 via the first frequency converter 1516 and the second frequency converter 1517. Only one of the frequency converter 1516 and the second frequency converter 1517 may be used, and the other may directly use the output signal 1559 as a local signal.
  • FIG. 12 is a block diagram showing a first configuration example of a UWB transceiver that can operate simultaneously in band groups A and B in the UWB band.
  • the band groups A and B are tentatively set frequencies that do not match the frequencies of the existing band groups. If the transmission power is reduced, the frequency can be set freely in this way even if the band arrangement of the existing standard is not satisfied. Since each band group is composed of 3 bands, wideband transmission is possible with this configuration having a signal band for 6 bands. At this time, it is assumed that one band has a 528 MHz band.
  • the UWB transceiver includes a reception amplifier 3201, a transmission amplifier 3202, a first analog down converter 3203, a second analog down converter 3204, a first analog up converter 3205, a first The second analog up-converter 3206, the first analog BB circuit 3207, the second analog BB circuit 3208, the third analog BB circuit 3209, the fourth analog BB circuit 3210, the first digital BB circuit 3211, the second Digital BB circuit 3212, third digital BB circuit 3213, fourth digital BB circuit 3214, multiplexer 3215, demultiplexer 3216, first VCO 3217, first divider 3218, second divider 3219, An adder circuit 3220 is provided.
  • the reception RF signal 3251 is input to the reception amplifier 3201.
  • the transmission RF signal 3252 is output from the transmission amplifier 3202.
  • An output signal 3253 is output from the reception amplifier 3201, and an output signal 3255 is output from the first analog down converter 3203.
  • An output signal 3256 is output from the second analog down converter 3204.
  • An output signal 3257 is output from the third analog BB circuit 3209.
  • An output signal 3258 is output from the fourth analog BB circuit 3210.
  • An output signal 3259 is output from the first analog BB circuit 3207.
  • An output signal 3260 is output from the second analog BB circuit 3208.
  • An output signal 3261 is output from the third digital BB circuit 3213.
  • An output signal 3262 is output from the fourth digital BB circuit 3214.
  • An output signal 3263 is output from the first digital BB circuit 3211.
  • An output signal 3264 is output from the second digital BB circuit 3212.
  • An input signal 3265 is input to the third digital BB circuit 3213.
  • An input signal 3266 is input to the fourth digital BB circuit 3214.
  • An output signal 3267 is output from the multiplexer 3215.
  • An input signal 3268 is input to the demultiplexer 3216.
  • a signal 3270 obtained by frequency-dividing the oscillation frequency signal 3269 of the first VCO 3217 by 2 by the first frequency divider 3218 is converted into the first analog down converter 3203 and the first frequency down converter 3203. Supplyed to the analog upconverter 3205.
  • the signal 3271 obtained by dividing the oscillation frequency signal 3269 of the first VCO 3217 by 3 by the second divider 3219 is the second analog down converter 3204 and the second The analog upconverter 3206 is supplied.
  • each frequency is 18 GHz in the first VCO 3217, 9 GHz in the output of the first frequency divider 3218, and 6 GHz in the output of the second frequency divider 3219.
  • the reception amplifier 3201 and the transmission amplifier 3202 can be shared.
  • FIG. 13 is a block diagram showing a second configuration example of the UWB transceiver that can operate simultaneously in the band groups A and B of the UWB band.
  • the band groups A and B are tentatively set frequencies that do not match the frequencies of the existing band groups. If the transmission power is reduced, the frequency can be set freely in this way even if the band arrangement of the existing standard is not satisfied. Since each band group is composed of 3 bands, wideband transmission is possible with this configuration having a signal band for 6 bands. At this time, it is assumed that one band has a 528 MHz band.
  • the UWB transceiver includes a reception amplifier 3301, a transmission amplifier 3302, a first analog down converter 3303, a second analog down converter 3304, a first analog up converter 3305, a second analog up converter 3306, First analog BB circuit 3307, second analog BB circuit 3308, third analog BB circuit 3309, fourth analog BB circuit 3310, first digital BB circuit 3311, second digital BB circuit 3312, third Digital BB circuit 3313, fourth digital BB circuit 3314, multiplexer 3315, demultiplexer 3316, first VCO 3317, first frequency divider 3318, and adder circuit 3320.
  • the reception RF signal 3351 is input to the reception amplifier 3301.
  • the transmission RF signal 3352 is output from the transmission amplifier 3302.
  • An output signal 3353 is output from the reception amplifier 3301.
  • An output signal 3355 is output from the first analog down converter 3303.
  • An output signal 3356 is output from the second analog down converter 3304.
  • An output signal 3357 is output from the third analog BB circuit 3309.
  • An output signal 3358 is output from the fourth analog BB circuit 3310.
  • An output signal 3359 is output from the first analog BB circuit 3307.
  • An output signal 3360 is output from the second analog BB circuit 3308.
  • An output signal 3361 is output from the third digital BB circuit 3313.
  • An output signal 3362 is output from the fourth digital BB circuit 3314.
  • An output signal 3363 is output from the first digital BB circuit 3311.
  • An output signal 3364 is output from the second digital BB circuit 3312.
  • An input signal 3365 is input to the third digital BB circuit 3313.
  • An input signal 3366 is input to the fourth digital BB circuit 3314.
  • An output signal 3367 is output from the multiplexer 3315.
  • An input signal 3368 is input to the demultiplexer 3316.
  • the frequency of the first VCO 3317 is supplied to the first analog down converter 3303 and the second analog up converter 3305.
  • the signal 3371 obtained by dividing the frequency of the first VCO 3317 by the first divider 3318 by 1.25 is converted into the second analog down converter 3304 and the second analog down converter 3304.
  • each frequency is 9 GHz in the first VCO 3317 and 7.2 GHz in the output of the first frequency divider 3318.
  • the reception amplifier 3301 and the transmission amplifier 3302 can be shared.
  • the frequency of the VCO is as low as about half, the design difficulty is eased.
  • FIG. 8 is a block diagram showing a configuration of a transceiver according to the seventh embodiment of the invention.
  • the transceiver includes a reception circuit 1601 corresponding to the first wireless system, a reception circuit 1602 corresponding to the second wireless system, a transmission circuit 1603 corresponding to the first wireless system, and a second wireless system.
  • a fourth frequency converter 1619 and a power control circuit 1620 corresponds a power control circuit 1620.
  • the reception circuit 1601 corresponding to the first radio system receives an analog down converter 1605 to which the first RF reception signal 1651 is input, and an output signal from the analog down converter 1605 as an input, and receives a BB signal.
  • a first digital down converter 1606 for outputting 1655 is provided.
  • a reception circuit 1602 corresponding to the second radio system receives an analog down converter 1608 to which the second RF reception signal 1652 is input, an output signal from the analog down converter 1608, and outputs a reception BB signal 1656.
  • a second digital down converter 1607 is provided.
  • a transmission circuit 1603 corresponding to the first wireless system inputs a first analog up-converter 1609 that outputs an RF transmission signal 1653 and a transmission BB signal 1657 and outputs an input signal to the analog up-converter 1609.
  • a first digital upconverter 1610 is provided.
  • a transmission circuit 1604 corresponding to the second radio system inputs a second analog up-converter 1612 that outputs an RF transmission signal 1654 and a transmission BB signal 1658 and outputs an input signal to the analog up-converter 1612.
  • a second digital upconverter 1611 is provided.
  • the first VCO 1613 outputs a signal 1659 having a predetermined oscillation frequency.
  • the second VCO 1614 outputs a signal 1664 having a predetermined oscillation frequency.
  • the third VCO 1615 outputs a signal 1665 having a predetermined oscillation frequency.
  • the first frequency converter 1616 converts the frequency of the output signal 1659 of the first VCO 1613 and supplies a local signal 1660 to the first analog down converter 1605 and the first analog up converter 1609. .
  • the second frequency converter 1617 converts the frequency of the output signal 1659 of the first VCO 1613 and supplies a local signal 1661 to the second analog down converter 1608 and the second analog up converter 1612. .
  • the third frequency converter 1618 converts the frequency of the output signal 1664 of the second VCO 1614 and provides a local signal 1662 to the first digital down converter 1606 and the first digital up converter 1610. .
  • the fourth frequency converter 1619 converts the frequency of the output signal 1665 of the third VCO 1615 and supplies a local signal 1663 to the second digital down converter 1607 and the second digital up converter 1611. .
  • the power control circuit 1620 generates a power control signal 1666 and controls the power of both transceivers. Details of the power control will be described later.
  • analog up-converter and analog down-converter perform frequency conversion of analog signals
  • digital up-converter and digital down-converter perform frequency conversion of digital signals, respectively.
  • an AD converter or a DA converter is used for conversion between an analog signal and a digital signal.
  • FIG. 26 is a diagram showing specific power control operation waveforms.
  • the power control signal 1666 When the power control signal 1666 is High, both transceivers operate to enter a broadband transmission mode with high power.
  • the power control signal 1666 When the power control signal 1666 is Low, the first transceiver corresponding to the first wireless system operates, whereas the second transceiver corresponding to the second wireless system is turned off. By stopping, the power saving and narrow band transmission mode is established. Thus, the power can be reduced by controlling the power of the transmitter / receiver according to the necessary band at that time.
  • FIG. 9 is a block diagram showing a configuration of a transceiver according to the eighth embodiment of the invention.
  • the transceiver includes a receiving circuit 1701 corresponding to the first wireless system, a receiving circuit 1702 corresponding to the second wireless system, a transmitting circuit 1704 corresponding to the second wireless system, a first VCO 1713, A second VCO 1714, a first frequency converter 1716, a second frequency converter 1717, a third frequency converter 1718, and a fourth frequency converter 1719 are provided.
  • the reception circuit 1701 corresponding to the first radio system receives an analog down converter 1705 to which the first RF reception signal 1751 is input, and an output signal from the analog down converter 1705 as an input, and receives a BB signal.
  • a first digital down converter 1706 that outputs 1755 is provided.
  • a reception circuit 1702 corresponding to the second radio system receives an analog down converter 1708 to which the second RF reception signal 1752 is input, and an output signal from the analog down converter 1708, and outputs a reception BB signal 1756.
  • a second digital down converter 1707 is provided.
  • a transmission circuit 1704 corresponding to the second radio system inputs a second analog up-converter 1712 that outputs an RF transmission signal 1754 and a transmission BB signal 1758 and outputs an input signal to the analog up-converter 1712.
  • a second digital up-converter 1711 is provided.
  • the first VCO 1713 outputs a signal 1759 having a predetermined oscillation frequency.
  • the second VCO 1714 outputs a signal 1764 having a predetermined oscillation frequency.
  • the third VCO 1715 outputs a signal 1765 having a predetermined oscillation frequency.
  • the first frequency converter 1716 converts the frequency of the output signal 1759 of the first VCO 1713 and supplies a local signal 1760 to the first analog down converter 1705.
  • the second frequency converter 1717 converts the frequency of the output signal 1759 of the first VCO 1713 and supplies a local signal 1761 to the second analog down converter 1708 and the second analog up converter 1712. .
  • the third frequency converter 1718 converts the frequency of the output signal 1764 of the second VCO 1714 and supplies a local signal 1762 to the first digital down converter 1706.
  • the fourth frequency converter 1719 converts the frequency of the output signal 1765 of the third VCO 1715 and supplies a local signal 1863 to the second digital down converter 1707 and the second digital up converter 1711. .
  • analog up-converter and analog down-converter perform frequency conversion of analog signals
  • digital up-converter and digital down-converter perform frequency conversion of digital signals, respectively.
  • an AD converter or a DA converter is used for conversion between an analog signal and a digital signal.
  • the receiving side receives two standards or bands (band groups), whereas the transmitting side transmits only one standard or band (band group).
  • band groups standards or bands
  • band group transmits only one standard or band
  • this structure can also be made into the structure which switched the number of the standards (band group) of a receiving side and a transmission side.
  • FIG. 10 is a block diagram showing a configuration of a transceiver according to the ninth embodiment of the invention.
  • the transceiver includes a receiving circuit 1901 corresponding to the first wireless system, a transmitting circuit 1904 corresponding to the second wireless system, a first VCO 1913, a second VCO 1914, and a first frequency converter 1916.
  • the reception circuit 1901 corresponding to the first radio system receives an analog down converter 1905 to which the first RF reception signal 1951 is input and an output signal from the analog down converter 1905 as an input, and receives a BB signal.
  • a first digital down converter 1906 that outputs 1955 is provided.
  • a transmission circuit 1904 corresponding to the second radio system inputs a second analog up-converter 1912 that outputs an RF transmission signal 1954 and a transmission BB signal 1958 and outputs an input signal to the analog up-converter 1912.
  • a second digital up-converter 1911 is provided.
  • the first VCO 1913 outputs a signal 1959 having a predetermined oscillation frequency.
  • the second VCO 1914 outputs a signal 1964 having a predetermined oscillation frequency.
  • the third VCO 1915 outputs a signal 1965 having a predetermined oscillation frequency.
  • the first frequency converter 1916 converts the frequency of the output signal 1959 of the first VCO 1913 and supplies a local signal 1960 to the first analog down converter 1905.
  • the second frequency converter 1917 converts the frequency of the output signal 1959 of the first VCO 1913 and supplies a local signal 1961 to the second analog upconverter 1912.
  • the third frequency converter 1918 converts the frequency of the output signal 1964 of the second VCO 1914 and supplies the local signal 1962 to the first digital down converter 1906.
  • the fourth frequency converter 1919 converts the frequency of the output signal 1965 of the third VCO 1915 and supplies a local signal 1963 to the second digital up-converter 1911.
  • analog up-converter and analog down-converter perform frequency conversion of analog signals
  • digital up-converter and digital down-converter perform frequency conversion of digital signals, respectively.
  • an AD converter or a DA converter is used for conversion between an analog signal and a digital signal.
  • the receiving side receives only one standard or band (band group), whereas the transmitting side also transmits only one standard or band (band group).
  • both standards are different.
  • this configuration local signal distribution can be further simplified as compared with the transceiver according to the eighth embodiment of the present invention.
  • this structure can also be made into the structure which replaced the specification of a receiving side and a transmission side, or a band (band group).
  • the present invention can be used for a transceiver capable of transmitting and receiving signals of a plurality of wireless standards or a plurality of bands (band groups).

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

L'invention porte sur un dispositif d'émission/réception qui peut être simultanément actionné dans une pluralité de systèmes radio. Le dispositif d'émission/réception comprend : un premier circuit de communication (1a) correspondant à un premier système radio; un second circuit de communication (1b) correspondant à un second système radio; un oscillateur (2) qui génère un signal de fréquence commun partagé par le premier circuit de communication (1a) et le second circuit de communication (1b); et des convertisseurs de fréquence (3a, 3b) qui convertissent en fréquence le signal de fréquence commun généré par l'oscillateur (2) et fournissent un signal local au premier circuit de communication (1a) ou au second circuit de communication (1b).
PCT/JP2009/003524 2008-09-02 2009-07-27 §§dispositif d'émission/réception WO2010026697A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016527735A (ja) * 2013-06-17 2016-09-08 クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ 異なる無線アクセス技術の多数のワイヤレス通信システムとの同時通信のための方法および装置
JP2018148327A (ja) * 2017-03-03 2018-09-20 株式会社モバイルテクノ 無線通信装置および周波数オフセット補償方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007267304A (ja) * 2006-03-30 2007-10-11 Hitachi Ltd 無線通信システムの同期方法、および端末装置
JP2007329804A (ja) * 2006-06-09 2007-12-20 Renesas Technology Corp 周波数シンセサイザ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007267304A (ja) * 2006-03-30 2007-10-11 Hitachi Ltd 無線通信システムの同期方法、および端末装置
JP2007329804A (ja) * 2006-06-09 2007-12-20 Renesas Technology Corp 周波数シンセサイザ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016527735A (ja) * 2013-06-17 2016-09-08 クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ 異なる無線アクセス技術の多数のワイヤレス通信システムとの同時通信のための方法および装置
JP2018148327A (ja) * 2017-03-03 2018-09-20 株式会社モバイルテクノ 無線通信装置および周波数オフセット補償方法

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