CN115801049B - Radio frequency signal spread spectrum device and vector signal transceiver - Google Patents
Radio frequency signal spread spectrum device and vector signal transceiver Download PDFInfo
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Abstract
The invention provides a radio frequency signal spread spectrum device and a vector signal transceiver, wherein the device comprises: a receiving channel, an input end of which receives an input signal from the outside, an output end of which is connected with an input end of the first device, the receiving channel at least comprising a first link and a second link formed by a plurality of first matrix switches; and the input end of the transmitting channel receives the output signal of the first device, the output end of the transmitting channel is connected with the input end of the second device, and the transmitting channel at least comprises a third link and a fourth link which are formed by a plurality of second matrix switches. The invention overcomes the difficulty of testing incompatible frequency between devices by realizing flexible routing and insertion loss compensation of radio frequency signals, and provides a plurality of selectable link topologies for the construction of a test system.
Description
Technical Field
The invention relates to the technical field of electronic testing, in particular to a radio frequency signal spreading device and a vector signal transceiver.
Background
Some instruments have limited frequency ranges, and the frequency to be tested is not in the range, so a flexible frequency adjusting device is required, for example, a Vector Signal Transceiver (VST) has a frequency up to 6GHz, but if an 8G Signal is to be tested or an 8G Signal is to be sent out by the Vector Signal Transceiver, the Vector Signal Transceiver needs to be spread.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention provides a radio frequency signal spread spectrum device and a vector signal transceiver aiming at the problems in the prior art.
The invention provides a radio frequency signal spread spectrum device, which comprises:
the receiving channel comprises at least a first link and a second link which are formed by a plurality of first matrix switches, wherein the first link directly transmits the input signals with the frequencies meeting the receiving range of the first device to the first device, and the second link frequency-modulates the input signals with the frequencies not meeting the receiving range of the first device to meet the receiving range of the first device and then transmits the input signals to the first device;
the input end of the transmitting channel receives the output signal of the first device, the output end of the transmitting channel is connected with the input end of a second device, the transmitting channel at least comprises a third link and a fourth link which are formed by a plurality of second matrix switches, the third link directly transmits the output signal with the frequency meeting the receiving range of the second device to the second device, and the fourth link frequency-modulates the output signal with the frequency not meeting the receiving range of the second device to meet the receiving range of the second device and then transmits the output signal to the second device;
wherein the receive channel and the transmit channel receive control commands that cause the first plurality of matrix switch configurations to form the first link or the second link, and the control commands that cause the second plurality of matrix switch configurations to form the third link or the fourth link.
According to a radio frequency signal spreading apparatus provided by the present invention, the second link frequency-modulates the input signal whose frequency does not satisfy the receiving range of the first device to satisfy the receiving range of the first device, including:
the second link down-converts the input signal having a frequency exceeding a maximum frequency in the first device reception range to meet the first device reception range.
According to a radio frequency signal spreading apparatus provided by the present invention, the fourth link frequency-modulates the output signal whose frequency does not satisfy the receiving range of the second device to satisfy the receiving range of the second device, including:
the fourth link up-converts the output signal having a frequency less than a minimum frequency in the second device reception range to meet the second device reception range.
According to the radio frequency signal spread spectrum device provided by the invention, the second link comprises a selection module, a first frequency mixing module and a first filtering module which are connected in sequence;
the selection module at least comprises a first sublink and a second sublink formed by a plurality of matrix switches, the selection module is configured to form the first sublink or the second sublink under the control of the control command, a filter is arranged in the first sublink to filter out a basic signal in the input signal, and an attenuator is arranged in the second sublink to attenuate the amplitude of the input signal, wherein the input signal comprises the basic signal and a harmonic signal;
the first frequency mixing module is used for carrying out frequency mixing processing on the input signal and the first local oscillator signal after being adjusted by the selection module to realize frequency modulation on the input signal;
the first filtering module at least comprises a plurality of third sub-links formed by a plurality of matrix switches, the first filtering module is configured to form one sub-link of the plurality of third sub-links under the control of the control command, and each third sub-link is provided with a different filter to filter out signal spurs and local oscillator leakage for the input signals of different frequencies.
According to the radio frequency signal spread spectrum device provided by the invention, the fourth link comprises an attenuation module, a second frequency mixing module and a second filtering module which are connected in sequence;
the attenuation module attenuates the amplitude of the output signal;
the second frequency mixing module is used for carrying out frequency mixing processing on the output signal and the second local oscillator signal after being adjusted by the attenuation module to realize frequency modulation on the output signal;
the second filtering module at least comprises a plurality of fourth sub-links formed by a plurality of matrix switches, the second filtering module is configured to form one sub-link of the plurality of fourth sub-links under the control of the control command, and each fourth sub-link is provided with a different filter to filter out signal spurs and local oscillator leakage for the output signals with different frequencies.
According to the radio frequency signal spread spectrum device provided by the invention, a first amplification and attenuation module is connected in series in the second link and/or the fourth link, the first amplification and attenuation module at least comprises a plurality of fifth sub-links formed by a plurality of matrix switches, the first amplification and attenuation module is configured to form one sub-link of the plurality of fifth sub-links under the control of the control command, and each fifth sub-link is provided with a different attenuator or amplifier to amplify or attenuate signals.
According to the radio frequency signal spreading device provided by the invention, a second amplification and attenuation module is connected in series in the second link and/or the fourth link, and the second amplification and attenuation module comprises an amplifier and an attenuator which are connected in series.
According to the radio frequency signal spreading device provided by the invention, the amplifier can adjust the amplification factor under the control command, and the attenuator can adjust the attenuation factor under the control command.
According to the present invention, there is provided a radio frequency signal spreading apparatus, the apparatus comprising:
and the local oscillator circuit comprises a plurality of sixth links formed by a plurality of matrix switches, is configured to form two links of the plurality of sixth links under the control command, and outputs the first local oscillator signal and the second local oscillator signal.
The invention also provides a vector signal transceiver, which comprises the radio frequency signal spread spectrum device.
According to the radio frequency signal spread spectrum device and the vector signal transceiver provided by the invention, flexible routing and insertion loss compensation of radio frequency signals are realized, the testing difficulty of frequency incompatibility among equipment is overcome, and various optional link topologies are provided for the construction of a testing system.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a radio frequency signal spreading apparatus provided in the present invention;
FIG. 2 is a schematic diagram of a receive channel disclosed herein;
FIG. 3 is a schematic diagram of a transmit channel disclosed herein;
fig. 4 is a schematic diagram of a local oscillation circuit according to the present invention.
Detailed Description
The advantages of the invention are further illustrated in the following description of specific embodiments in conjunction with the accompanying drawings.
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if," as used herein, may be interpreted as "at \8230; \8230when" or "when 8230; \823030when" or "in response to a determination," depending on the context.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
The radio frequency signal spreading device provided by the embodiment of the present invention is described in detail by specific embodiments and application scenarios thereof with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a radio frequency signal spreading device provided by the present invention, and as shown in fig. 1, the radio frequency signal spreading device provided by the present invention includes a receiving channel, a transmitting channel, and a local oscillation circuit.
The receiving channel at least comprises a first link and a second link which are formed by a plurality of first matrix switches, the first link directly transmits the input signals with the frequency meeting the receiving range of the first equipment to the first equipment, and the second link transmits the input signals with the frequency not meeting the receiving range of the first equipment to the first equipment after modulating the frequency of the input signals with the frequency not meeting the receiving range of the first equipment to meet the receiving range of the first equipment.
Optionally, the frequency-modulating the input signal with the frequency not meeting the reception range of the first device to meet the reception range of the first device by the second link includes:
the second link down-converts the input signal having a frequency exceeding the maximum frequency in the reception range of the first device to meet the reception range of the first device.
Fig. 2 is a schematic diagram of a receiving channel disclosed in the present invention, as shown in fig. 2, an input signal from the outside enters the receiving channel from a signal input terminal, and a signal output terminal of the receiving channel is directly connected to a first device, wherein the matrix switch 111 is connected to the matrix switch 1110, i.e., the first link, and the matrix switch 111 is connected to the matrix switch 1110 through the matrix switch 112 and a subsequent series of devices, i.e., the second link.
The input signal of the receiving channel belongs to an external signal, and may be a signal which has just passed through the amplifier, so that the input signal may include a second harmonic signal and a third harmonic signal in addition to the basic signal, and the input signal is controlled to select different links according to the signal requirement of the first device, which is specifically divided into two cases:
1) The first device only needs the basic signal
Usually, the frequency range of the signal at the signal input end is 2-8.5GHz, if the frequency of the input signal is within 2-6GHz, the signal passes through the matrix switch 111 and then directly enters the signal output end from the matrix switch 1110, without any other processing, if the frequency of the input signal is 6-8.5GHz, the signal goes out from the matrix switch 111 and enters the matrix switch 112, then enters the attenuator 131, the amplitude of the input signal is adjusted by the attenuator 131, then the processed input signal enters the matrix switch 113, then enters the matrix switch 114, then the amplification, reduction or invariance of the power is selected as required, the gain of the amplifier 141 is 15dB, the gain of the amplifier 142 is 5dB, the attenuation of the attenuator 132 is 5dB, if the input signal is smaller at this time, the input signal enters the amplifier 141, if the input signal is larger at this time, then the signal enters the amplifier 142, if the signal is large enough to be reduced, the signal enters the attenuator 132, the signal enters the matrix switch 115 and then enters the mixer 151, the mixer 151 performs mixing processing on the first local oscillation signal and the input signal, the processed input signal enters the matrix switch 116, then the signal is divided into 4 stages according to the frequency of the input signal (for example, when the frequency of the signal is less than 3GHz, the signal enters the filter 124, when the frequency of the signal is 3-5GHz, the signal enters the filter 125, when the frequency of the signal is 5-7GHz, the signal enters the filter 126, the frequency of the signal is greater than 7GHz, the signal enters the filter 127), the spurious caused by the input signal and the local oscillation signal are filtered out, then the signal enters the matrix switch 117, the signal enters the amplifier 143 through the matrix switch 117, the signal is appropriately amplified, and the signal enters the attenuator 133 from the amplifier 143, then enters the matrix switch 118, if the signal is smaller, the control signal enters the amplifier 144, goes out from the matrix switch 119, enters the amplifier 145, amplifies the power twice continuously, if the signal is not small, attenuates and amplifies again, the signal enters the matrix switch 119 after passing through the attenuator 134, then enters the filter 128 after passing through the amplifier 145, and the filter 128 is used for filtering the local oscillator leakage and the stray brought by the input signal. The signal then enters the matrix switch 1110 and is output from the signal output into the first device.
2) The first device only needs harmonic signals
If the signal output end only needs harmonic signals, the signals are input from the signal input end and enter the matrix switch 112 through the matrix switch 111, the filter 121, the filter 122 and the filter 123 respectively process signals in different frequency bands, the filter 121 processes signals in a frequency range of 2-3GHz, the filter 122 processes signals in a frequency range of 3-5GHz, the filter 123 processes signals in a frequency range of 5-8.5GHz, different filters are selected according to the input sizes of the signals, the filter selects and filters out input main signals, namely basic signals, and second harmonic signals and third harmonic signals are left and recorded as target harmonic signals, the target harmonic signals pass through the matrix switch 113 and then enter the matrix switch 4, and are subsequently consistent with the basic signals.
Optionally, the second link includes a selection module 400, a first frequency mixing module 500, and a first filtering module 600, which are connected in sequence;
the selection module at least comprises a first sub-link and a second sub-link which are formed by a plurality of matrix switches, the selection module is configured to form the first sub-link or the second sub-link under the control of a control command, a filter is arranged in the first sub-link to filter out a basic signal in an input signal, and an attenuator is arranged in the second sub-link to attenuate the amplitude of the input signal, wherein the input signal comprises the basic signal and a harmonic signal;
the first frequency mixing module performs frequency mixing processing on the input signal and the first local oscillator signal after being adjusted by the selection module to realize frequency modulation on the input signal;
the first filtering module at least comprises a plurality of third sublinks formed by a plurality of matrix switches, the first filtering module is configured to form one sublink of the plurality of third sublinks under the control of a control command, and each third sublink is provided with a different filter to filter out signal stray and local oscillator leakage aiming at input signals with different frequencies.
Preferably, the first sublink comprises matrix switch 112-attenuator 131-matrix switch 113; the second sublink includes three, which are respectively: matrix switch 112-filter 121-matrix switch 113, matrix switch 112-filter 122-matrix switch 113, matrix switch 112-filter 123-matrix switch 113.
Preferably, the third sublink includes four, respectively: matrix switch 116-filter 124-matrix switch 117, matrix switch 116-filter 125-matrix switch 117, matrix switch 116-filter 126-matrix switch 117, matrix switch 116-filter 127-matrix switch 117.
The frequency modulation device comprises a transmitting channel, wherein the input end of the transmitting channel receives an output signal of first equipment, the output end of the transmitting channel is connected with the input end of second equipment, the transmitting channel at least comprises a third link and a fourth link which are formed by a plurality of second matrix switches, the third link directly transmits the output signal of which the frequency meets the receiving range of the second equipment to the second equipment, and the fourth link modulates the frequency of the output signal of which the frequency does not meet the receiving range of the second equipment to meet the receiving range of the second equipment and then transmits the output signal to the second equipment.
Optionally, the frequency-modulating the output signal with the frequency not meeting the second device receiving range to meet the second device receiving range by the fourth link includes:
the fourth link up-converts the output signal having a frequency less than the minimum frequency in the second device reception range to meet the second device reception range.
Fig. 3 is a schematic diagram of a transmit channel disclosed in the present invention, and as shown in fig. 3, the matrix switch 211 is connected to the matrix switch 218, i.e. the third link, and the matrix switch 211 is connected to the matrix switch 218, i.e. the fourth link, through the attenuator 231, the matrix switch 212, and a subsequent series of devices.
The transmission channel receives the output signal of the first device, if the first device is a vector signal transceiver, the output signal only has a basic signal and no harmonic signal, the vector signal transceiver can only output a 0-6GHz signal, and if the signal required by the second device is just in the range of 0-6GHz, the input signal is directly output from the matrix switch 218 to the signal output end through the matrix switch 211. If the output signal needs 6-8.5GHz, the output signal enters the attenuator 231 through the matrix switch 211, the amplitude of the signal is reduced, that is, the power value is reduced, the processed signal enters the matrix switch 212, and the processed signal is selected to be not amplified, amplified by 5dBm and amplified by 15dBm according to the requirement, and respectively selected to pass through the amplifier 241, the amplifier 242, the amplifier 241 and the amplifier 242, and then enter the matrix switch 213. The second local oscillation signal passes through the matrix switch 213 and enters the mixer 251 for mixing, and then enters the filter 221 for filtering spurious signals. The signal then reenters the amplifier 243 to increase in amplitude. The local oscillator leakage and the spurious of the input signal are filtered by the filter 222 or the filter 223 according to the frequency difference, for example, if the current signal is less than 7GHz, the control signal enters the filter 222, and if the current signal is greater than 7GHz, the control signal enters the filter 223. The signal enters an amplifier 244 through a matrix switch 215, then enters an attenuator 232, then enters a matrix switch 216, if the signal needs to be amplified twice, the control signal is selected to enter an amplifier 245 through the matrix switch 216, if the signal needs to be amplified once, the signal is firstly attenuated once and then amplified once, the control signal enters an attenuator 233 through the matrix switch 216, then the signal enters an amplifier 246 through a matrix switch 217, then enters a filter 224, is output to a signal output end through a matrix switch 218, and then is used for being input to a second device.
Optionally, the fourth link includes an attenuation module 700, a second mixing module 800, and a second filtering module 900, which are connected in sequence;
the attenuation module attenuates the amplitude of the output signal;
the second frequency mixing module carries out frequency mixing processing on the output signal and the second local oscillator signal after being adjusted by the attenuation module, so that the frequency modulation of the output signal is realized;
the second filtering module at least comprises a plurality of fourth sub-links formed by a plurality of matrix switches, the second filtering module is configured to form one sub-link of the plurality of fourth sub-links under the control of the control command, and each fourth sub-link is provided with a different filter to filter out signal stray and local oscillator leakage aiming at output signals with different frequencies.
Preferably, the fourth sublink includes two sublinks, respectively: matrix switch 214-filter 222-matrix switch 215, matrix switch 214-filter 223-matrix switch 215.
And the local oscillator circuit comprises a plurality of sixth links formed by a plurality of matrix switches, is configured to form two links of the plurality of sixth links under a control command, and outputs a first local oscillator signal and a second local oscillator signal.
Fig. 4 is a schematic diagram of a local oscillator circuit according to the present invention, and as shown in fig. 4, an input signal of the local oscillator circuit enters a phase detector, passes through a matrix switch 311, and then enters a crystal oscillator, the crystal oscillator generates a standard signal to the phase detector, and then the phase detector identifies a phase difference of the input signal and adjusts the phase difference to form a phase-locked loop. The crystal oscillator generates a reference signal, and the reference signal is divided into 2 paths: one path outputs signals to the outside through a filter, an amplifier, a frequency divider and the filter; the other path enters comb spectrum 1 through an amplifier 341, then a 2.5GHz signal is taken out by a filter 321, the signal is amplified after passing through an amplifier 342, and then the signal enters a power divider, the power divider generates 3 paths of signals, and the 1 st path: the signals are filtered by the matrix switch 312, the filter 324, the filter 325 and the filter 326 to obtain 4 paths of required 5GHz, 10GHz and 20GHz respectively, the signals enter the matrix switch 313 if coming out of the filter 324, the filter 325 or the filter 326, the 2.5GHz signals of the 2 nd path of the power divider also enter the matrix switch 313, the signals enter the amplifier 344 after passing through the matrix switch 313, and then the signals pass through the filter 328 to output a first local oscillation signal. After entering the matrix switch 312, the 1 st path of signal enters the filter 327, and then enters the matrix switch 314 together with the 3 rd path of 2.5GHz signal, and then enters the filter 329, and a second local oscillator signal is output.
Preferably, the apparatus further includes a common carrier board, the common carrier board relaying a control command of an external system (computer) to the receiving channel and the transmitting channel, the receiving channel and the transmitting channel receiving the control command, the control command causing the plurality of first matrix switches to be configured to form the first link or the second link, and the control command causing the plurality of second matrix switches to be configured to form the third link or the fourth link.
Preferably, the receiving channel and the transmitting channel are packaged on the same channel plate, the local oscillation circuit is packaged on the local oscillation plate, and the channel plate, the local oscillation plate and the universal carrier plate are packaged together in the same physical box to form a spread spectrum device. The modular design realizes the convenience of assembly production, actual use and maintenance.
Optionally, a first amplification and attenuation module is connected in series in the second link and/or the fourth link, the first amplification and attenuation module at least comprises a plurality of fifth sub-links formed by a plurality of matrix switches, the first amplification and attenuation module is configured to form one sub-link of the plurality of fifth sub-links under the control of a control command, and a different attenuator or amplifier is arranged in each fifth sub-link to amplify or attenuate a signal.
Preferably, as shown in fig. 2, a first amplification and attenuation module 1010 is provided, and the fifth sublink includes four, respectively: matrix switch 114-amplifier 141-matrix switch 115, matrix switch 114-attenuator 132-matrix switch 115, matrix switch 114-amplifier 142-matrix switch 115, matrix switch 114-matrix switch 115.
Optionally, a second amplification and attenuation module is connected in series in the second link and/or the fourth link, and the second amplification and attenuation module includes an amplifier and an attenuator connected in series.
Preferably, as shown in fig. 2, a second amplification and attenuation module 1020 is provided, which comprises an amplifier 143 and an attenuator 133 in series.
Alternatively, the amplifier can adjust the amplification factor under control commands and the attenuator can adjust the attenuation factor under control commands. By controlling the specific scaling times of the amplifier and the attenuator, the scaling requirements of signals of various frequencies can be met.
Preferably, the first device is a vector signal transceiver without a spread spectrum function.
The invention also provides a vector signal transceiver, which comprises a radio frequency signal spread spectrum device.
According to the embodiment, flexible routing and insertion loss compensation of radio frequency signals are realized, the testing difficulty of frequency incompatibility among devices is overcome, and various optional link topologies are provided for building a testing system.
It should be noted that the embodiments of the present invention have been described in terms of preferred embodiments, and not by way of limitation, and that those skilled in the art can make modifications and variations of the embodiments described above without departing from the spirit of the invention.
Claims (10)
1. An apparatus for spreading a radio frequency signal, the apparatus comprising:
the receiving channel comprises at least a first link and a second link which are formed by a plurality of first matrix switches, wherein the first link directly transmits the input signals with the frequencies meeting the receiving range of the first device to the first device, and the second link frequency-modulates the input signals with the frequencies not meeting the receiving range of the first device to meet the receiving range of the first device and then transmits the input signals to the first device;
the input end of the transmitting channel receives the output signal of the first device, the output end of the transmitting channel is connected with the input end of a second device, the transmitting channel at least comprises a third link and a fourth link which are formed by a plurality of second matrix switches, the third link directly transmits the output signal with the frequency meeting the receiving range of the second device to the second device, and the fourth link frequency-modulates the output signal with the frequency not meeting the receiving range of the second device to meet the receiving range of the second device and then transmits the output signal to the second device;
wherein the receive path and the transmit path receive control commands that cause the first plurality of matrix switch configurations to form the first link or the second link, and the control commands that cause the second plurality of matrix switch configurations to form the third link or the fourth link.
2. The radio frequency signal spreading apparatus according to claim 1, wherein the second link frequency-modulates the input signal having a frequency that does not satisfy the first device reception range to satisfy the first device reception range, comprising:
the second link down-converts the input signal having a frequency exceeding a maximum frequency in the first device reception range to meet the first device reception range.
3. The radio frequency signal spreading apparatus according to claim 1, wherein the fourth link frequency-modulates the output signal having a frequency that does not satisfy the second device reception range to satisfy the second device reception range, comprising:
the fourth link up-converts the output signal having a frequency less than a minimum frequency in the second device reception range to meet the second device reception range.
4. The radio frequency signal spreading device according to claim 1, wherein the second link comprises a selection module, a first mixing module, a first filtering module connected in sequence;
the selection module at least comprises a first sublink and a second sublink formed by a plurality of matrix switches, the selection module is configured to form the first sublink or the second sublink under the control of the control command, a filter is arranged in the first sublink to filter out a basic signal in the input signal, and an attenuator is arranged in the second sublink to attenuate the amplitude of the input signal, wherein the input signal comprises the basic signal and a harmonic signal;
the first frequency mixing module is used for carrying out frequency mixing processing on the input signal and the first local oscillator signal after being adjusted by the selection module to realize frequency modulation on the input signal;
the first filtering module at least comprises a plurality of third sub-links formed by a plurality of matrix switches, the first filtering module is configured to form one sub-link of the plurality of third sub-links under the control of the control command, and each third sub-link is provided with a different filter to filter out signal spurs and local oscillator leakage for the input signals of different frequencies.
5. The radio frequency signal spreading device according to claim 4, wherein the fourth link comprises an attenuation module, a second mixing module, and a second filtering module connected in sequence;
the attenuation module attenuates the amplitude of the output signal;
the second frequency mixing module is used for carrying out frequency mixing processing on the output signal and the second local oscillator signal after being adjusted by the attenuation module to realize frequency modulation on the output signal;
the second filtering module at least comprises a plurality of fourth sublinks formed by a plurality of matrix switches, the second filtering module is configured to form one sublink of the plurality of fourth sublinks under the control of the control command, and each fourth sublink is provided with a different filter to filter out signal spurs and local oscillator leakage aiming at the output signals with different frequencies.
6. The radio frequency signal spreading device according to claim 5, wherein a first amplification and attenuation module is connected in series in the second link and/or the fourth link, the first amplification and attenuation module at least comprises a plurality of fifth sub-links formed by a plurality of matrix switches, the first amplification and attenuation module is configured to form one sub-link of the plurality of fifth sub-links under the control of the control command, and each fifth sub-link is provided with a different attenuator or amplifier to amplify or attenuate a signal.
7. The radio frequency signal spreading device according to claim 6, wherein a second amplification and attenuation module is connected in series in the second link and/or the fourth link, and the second amplification and attenuation module comprises an amplifier and an attenuator connected in series.
8. The radio frequency signal spreading device according to claim 7, wherein the amplifier is capable of adjusting an amplification factor under the control command, and the attenuator is capable of adjusting an attenuation factor under the control command.
9. The radio frequency signal spreading device according to claim 8, wherein the device comprises:
and the local oscillator circuit comprises a plurality of sixth links formed by a plurality of matrix switches, is configured to form two links of the plurality of sixth links under the control command, and outputs the first local oscillator signal and the second local oscillator signal.
10. A vector signal transceiver, characterized in that it comprises a radio frequency signal spreading device according to any one of claims 1 to 9.
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| US10085159B2 (en) * | 2016-05-23 | 2018-09-25 | Fat Mongoose Technologies, Inc. | Wireless environment optimization system |
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