CN218829908U - Miniaturized ultra-wideband transmitter - Google Patents
Miniaturized ultra-wideband transmitter Download PDFInfo
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- CN218829908U CN218829908U CN202223056928.0U CN202223056928U CN218829908U CN 218829908 U CN218829908 U CN 218829908U CN 202223056928 U CN202223056928 U CN 202223056928U CN 218829908 U CN218829908 U CN 218829908U
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The utility model relates to a miniaturized ultra wide band transmitter, which comprises an intermediate frequency signal filtering and amplifying module, a radio frequency signal filtering and amplifying module, a local oscillation signal module, a frequency band output selection module, a wave detector and a control module; the output end of the intermediate frequency signal filtering and amplifying module is connected with the input end of the radio frequency signal filtering and amplifying module, the output end of the radio frequency signal filtering and amplifying module is connected with the input end of the frequency band output selection module and the input end of the detector, the output end of the detector is connected with the input end of the control module, the output end of the control module is connected with the intermediate frequency signal filtering and amplifying module and the radio frequency signal filtering and amplifying module, and the local oscillator signal module is connected with the intermediate frequency signal filtering and amplifying module and the radio frequency signal filtering and amplifying module. The utility model can be firstly suitable for up-converting the intermediate frequency signal to the transmitting signal of a very wide frequency band; secondly, two attenuation modes of MGC and AGC can be realized; the wide-range input dynamic can be realized; finally, the circuit is simple in design and convenient to debug.
Description
Technical Field
The utility model relates to a radio communication technology field especially relates to a miniaturized ultra wide band transmitter.
Background
With the continuous development of radio communication technology and integrated electronic information technology, the requirements of the system on a microwave transmitter are continuously deepened towards ultra wide band, generalization and miniaturization, and as a core component of the microwave transmitter, a transmitting module up-converts an intermediate frequency signal generated by an information processing center into a radio frequency signal, and the size and performance of the radio frequency signal are directly related to the capability of the whole transmitter, so that how to design and obtain the ultra wide band and miniaturized transmitter is a problem which needs to be considered at present.
It is noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure and therefore may include information that does not constitute prior art that is already known to a person of ordinary skill in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's shortcoming, provide a miniaturized ultra wide band transmitter, it is narrower to have solved current transmitter frequency channel coverage, and can not realize miniaturized problem.
The purpose of the utility model is realized through the following technical scheme: a miniaturized ultra-wideband transmitter comprises an intermediate frequency signal filtering and amplifying module, a radio frequency signal filtering and amplifying module, a local oscillator signal module, a frequency band output selection module, a detector and a control module;
the output end of the intermediate frequency signal filtering and amplifying module is connected with the input end of the radio frequency signal filtering and amplifying module, the output end of the radio frequency signal filtering and amplifying module is connected with the input ends of the frequency band output selection module and the detector, the output end of the detector is connected with the input end of the control module, the output end of the control module is connected with the intermediate frequency signal filtering and amplifying module and the radio frequency signal filtering and amplifying module, and the local oscillator signal module is connected with the intermediate frequency signal filtering and amplifying module and the radio frequency signal filtering and amplifying module.
The intermediate frequency signal filtering and amplifying module comprises a first intermediate frequency filter, a first numerical control attenuator, a first amplifier, a first mixer, a second intermediate frequency filter and a second amplifier which are connected in sequence;
the output end of the local oscillator signal module is connected with the first frequency mixer, and the output end of the control module is connected with the first numerical control attenuator.
The radio frequency signal filtering and amplifying module comprises a second frequency mixer, a third amplifier, a second numerical control attenuator, a fourth amplifier, a third numerical control attenuator and a power divider which are sequentially connected;
the output end of the local oscillation signal module is connected with the second frequency mixer, the output end of the control module is connected with the second numerical control attenuator and the third numerical control attenuator, and the output end of the second amplifier is connected with the second frequency mixer.
The local oscillation signal module comprises a first local oscillation unit and a second local oscillation unit, the output end of the first local oscillation unit is connected with the second frequency mixer, and the output end of the second local oscillation unit is connected with the first frequency mixer.
The frequency band output selection module comprises a fifth amplifier, a first switch, a second switch, a third switch, a fourth switch, a first filter, a second filter, a third filter, a fourth filter, a fifth filter and a sixth amplifier;
the output end of the power divider is connected with the input end of a fifth amplifier, the output end of the fifth amplifier is connected with a first switch, the first switch is respectively connected with a second switch, a fourth filter and a fifth filter, and the second switch is respectively connected with the first filter, the second filter and a third filter;
the output ends of the first filter, the second filter and the third filter are all connected with a third switch, the output ends of the fourth filter and the fifth filter are connected with a fourth switch, the third switch is connected with the fourth switch, the fourth switch is connected with the input end of a sixth amplifier, and the sixth amplifier outputs radio frequency signals of corresponding frequency bands.
The utility model has the advantages of it is following: a miniaturized ultra-wideband transmitter can be firstly suitable for up-converting an intermediate frequency signal into a transmission signal of a very wide frequency band; secondly, two attenuation modes of MGC and AGC can be realized; the wide-range input dynamic can be realized; finally, the circuit is simple in design, convenient to debug, capable of achieving automatic test calibration and beneficial to batch production.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the detailed description of the embodiments of the present application provided below in connection with the appended drawings is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application. The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the utility model relates to a miniaturized super bandwidth transmitter, frequency coverage is 0.1GHz-18GHz, and it includes 2 local oscillator units, 5 radio frequency filter, 4 radio frequency switches, 2 intermediate frequency filter, 3 numerical control attenuations of 31dB attenuation range, 2 mixers, 6 amplifiers, 1 merit divider, 1 wave detector and 1 control module.
Wherein, 2 local oscillation units are respectively used for outputting two local oscillation signals; the 5 radio frequency filters perform subsection selection on the radio frequency signals; the radio frequency switch mainly switches among 5 radio frequency filters; the 3 digital controlled attenuators meet two attenuation modes of a transmitter and a receiver, wherein the MGC mode attenuates according to 1dB step, the attenuation dynamic range reaches 90dB, the AGC mode attenuates according to 1dB step, and the attenuation dynamic range reaches 90dB; the amplifier mainly amplifies the transmission signal to satisfy a certain power gain. The transmitter can output an intermediate frequency signal with the frequency of 1.8GHz and the bandwidth of 1GHz after being up-converted twice to 0.1GHz-18GHz, can realize the attenuation dynamics of 90dB under two modes of AGC and MGC, can carry out power calibration on the signal with the frequency of 0.1GHz-18GHz according to the stepping of 0.5GHz through automatic test software automatic calibration under the AGC mode, can ensure the consistency of the output power of the whole transmitting working frequency band, and is very convenient. And the size of the transmitter is 100mm 150mm 20mm, and the miniaturization of the wide frequency band of the transmitter is realized.
Furthermore, 2 local oscillator units generate a reference signal through an internal crystal oscillator, and the reference signal enters a phase-locked loop and is set through software according to different requirements. 1 local oscillation unit generates required 1 local oscillation signal; the 2 local oscillator unit generates the required 2 local oscillator signals. And providing a local oscillation driving signal for a frequency mixer in the circuit, and up-converting the intermediate frequency signal to a radio frequency signal for outputting.
The 5 radio frequency filters are respectively a 0.1GHz-0.5GHz filter, a 0.5GHz-2GH filter z, a 2GHz-6GHz filter, a 6GHz-12GHz filter and a 12GHz-18GHz filter. The method mainly carries out segmented filtering on the radio frequency signals of 0.1GHz-18GHz, thus ensuring better filtering of some transmission stray signals so as to avoid influencing the performance of a transmitter.
4 radio frequency switches, 4 switches are all 3-to-1 switches, the switch 1 is firstly divided into 3 paths, wherein 2 paths are directly connected with 2 filters, the other path is connected with the common end of the switch 2, the switch 2 is divided into 3 paths to be connected with 3 filters, and thus, the 1 path of signals can be switched into 5 paths through the switch and are respectively connected with the radio frequency filters; the switch 3 outputs the 1-path signal by controlling and switching the 3-path signal, the 1-path signal and the other 2-path signal enter the switch 4, and the 1-path signal is output by controlling and switching again. Thus, 1 path of signal enters the switch 1 and the switch 2 to be divided into 5 paths which are respectively connected with the filter, after the signal passes through the filter, the 5 paths of signal pass through the switch 3 and the switch 4, and finally the 1 path of signal is output, thereby realizing the function of switch filtering.
The transmitter is realized by adopting a mode of frequency conversion twice, wherein the intermediate frequency filter 1 is a 1.8GHz intermediate frequency filter, and the filter filters stray signals generated in the information processing module and only passes the required intermediate frequency signals with the bandwidth of 1.8 GHz; in addition, the intermediate frequency filter 2 mainly filters spurious signals generated by mixing, and only passes the intermediate frequency signal 1 generated after the first frequency conversion.
3 numerical control attenuators of 31dB attenuation range, these 3 numerical control attenuators are mainly in order to satisfy the bigger input dynamic range of transmitter, when the intermediate frequency signal input, attenuate numerical control attenuator 1 at first, then attenuate numerical control attenuator 2, attenuate numerical control attenuator 3 at last. This ensures that the output signal is not over-saturated.
The frequency mixer 1 mixes the received radio frequency signal with a local oscillator 1 signal generated by a local oscillator 1 unit to generate an intermediate frequency 1 signal; the mixer 2 mixes the 1 intermediate frequency signal with the 2 local oscillation signal generated by the 2 local oscillation unit to generate a 2 intermediate frequency signal. This achieves two up-conversions of the transmitter.
The amplifier 3, the amplifier 4, the amplifier 5 and the amplifier 6 are radio frequency amplifiers, and can amplify radio frequency signals within a bandwidth of 0.1GHz-18GHz, provide gain for the radio frequency signals and amplify the signals. The amplifier 2 is a 1 intermediate frequency amplifier, and provides gain for the 1 intermediate frequency signal to amplify the signal. The amplifier 1 is an intermediate frequency amplifier, and provides gain for the intermediate frequency signal to amplify the signal.
The power divider mainly divides the power of the radio-frequency signal, one path of signal is output after amplification and filtration, and the other path of signal enters the detector for detection and outputs detection voltage.
When the digital attenuator is in an MGC mode, the external control signal controls the control module through a communication protocol, and the control module achieves a certain attenuation value through the corresponding attenuation bit of the digital attenuator. When in AGC mode, the transmitter outputs a certain power value fixedly. Because the gain of the whole transmitter is fixed, when the power of an external input signal is increased, the output detection signal is also increased correspondingly, and the voltage of the detector is increased linearly within a certain range. Therefore, when a signal with certain power is output, the corresponding detection voltage value is used as a reference voltage value and is input into the control module. Whether the input power is increased or decreased, the corresponding detection voltage is increased or decreased, the control module calculates a difference value according to the comparison between the real-time detection voltage and the reference voltage, then calculates a changed power value according to the slope of the detector, and attenuates or releases the attenuation of the digital controlled attenuator according to the power value. Thereby achieving the effect of AGC. The control module switches the switch according to the radio frequency signal informed by the external control signal, and selects the corresponding radio frequency band filter for filtering. And simultaneously, the control module tunes the output signal frequency of the local oscillator unit 1 through the radio frequency signal informed by the external control signal.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. A miniaturized ultra-wideband transmitter, characterized by: the device comprises an intermediate frequency signal filtering and amplifying module, a radio frequency signal filtering and amplifying module, a local oscillator signal module, a frequency band output selection module, a wave detector and a control module;
the output end of the intermediate frequency signal filtering and amplifying module is connected with the input end of the radio frequency signal filtering and amplifying module, the output end of the radio frequency signal filtering and amplifying module is connected with the input ends of the frequency band output selection module and the detector, the output end of the detector is connected with the input end of the control module, the output end of the control module is connected with the intermediate frequency signal filtering and amplifying module and the radio frequency signal filtering and amplifying module, and the local oscillator signal module is connected with the intermediate frequency signal filtering and amplifying module and the radio frequency signal filtering and amplifying module.
2. A miniaturized ultra-wideband transmitter as claimed in claim 1, characterized in that: the intermediate frequency signal filtering and amplifying module comprises a first intermediate frequency filter, a first numerical control attenuator, a first amplifier, a first mixer, a second intermediate frequency filter and a second amplifier which are connected in sequence;
the output end of the local oscillator signal module is connected with the first frequency mixer, and the output end of the control module is connected with the first numerical control attenuator.
3. A miniaturized ultra-wideband transmitter as claimed in claim 2, characterized in that: the radio frequency signal filtering and amplifying module comprises a second frequency mixer, a third amplifier, a second numerical control attenuator, a fourth amplifier, a third numerical control attenuator and a power divider which are sequentially connected;
the output end of the local oscillation signal module is connected with the second frequency mixer, the output end of the control module is connected with the second numerical control attenuator and the third numerical control attenuator, and the output end of the second amplifier is connected with the second frequency mixer.
4. A miniaturized ultra-wideband transmitter as claimed in claim 3, characterized in that: the local oscillation signal module comprises a first local oscillation unit and a second local oscillation unit, the output end of the first local oscillation unit is connected with the second frequency mixer, and the output end of the second local oscillation unit is connected with the first frequency mixer.
5. A miniaturized ultra-wideband transmitter as claimed in claim 3, characterized in that: the frequency band output selection module comprises a fifth amplifier, a first switch, a second switch, a third switch, a fourth switch, a first filter, a second filter, a third filter, a fourth filter, a fifth filter and a sixth amplifier;
the output end of the power divider is connected with the input end of a fifth amplifier, the output end of the fifth amplifier is connected with a first switch, the first switch is respectively connected with a second switch, a fourth filter and a fifth filter, and the second switch is respectively connected with the first filter, the second filter and the third filter;
the output ends of the first filter, the second filter and the third filter are all connected with a third switch, the output ends of the fourth filter and the fifth filter are connected with a fourth switch, the third switch is connected with the fourth switch, the fourth switch is connected with the input end of a sixth amplifier, and the sixth amplifier outputs radio frequency signals of corresponding frequency bands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223056928.0U CN218829908U (en) | 2022-11-17 | 2022-11-17 | Miniaturized ultra-wideband transmitter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223056928.0U CN218829908U (en) | 2022-11-17 | 2022-11-17 | Miniaturized ultra-wideband transmitter |
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| Publication Number | Publication Date |
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| CN218829908U true CN218829908U (en) | 2023-04-07 |
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| CN202223056928.0U Withdrawn - After Issue CN218829908U (en) | 2022-11-17 | 2022-11-17 | Miniaturized ultra-wideband transmitter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116318205A (en) * | 2023-05-22 | 2023-06-23 | 英诺微(成都)电子有限公司 | System for improving frequency spectrum width of pulse transmitter |
-
2022
- 2022-11-17 CN CN202223056928.0U patent/CN218829908U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116318205A (en) * | 2023-05-22 | 2023-06-23 | 英诺微(成都)电子有限公司 | System for improving frequency spectrum width of pulse transmitter |
| CN116318205B (en) * | 2023-05-22 | 2023-07-28 | 英诺微(成都)电子有限公司 | System for improving frequency spectrum width of pulse transmitter |
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