CN220798275U - Radio frequency transceiver for vector network analyzer and vector network analyzer - Google Patents
Radio frequency transceiver for vector network analyzer and vector network analyzer Download PDFInfo
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Abstract
The application discloses a radio frequency transceiver for a vector network analyzer and the vector network analyzer, wherein the radio frequency transceiver comprises a first transceiver module and a second transceiver module, the first transceiver module is used for receiving and transmitting radio frequency signals of a first frequency band for the vector network analyzer, and the second transceiver module is used for receiving and transmitting radio frequency signals of a second frequency band for the vector network analyzer, wherein the frequency of the radio frequency signals of the first frequency band is lower than that of the second frequency band. The first transceiver module includes a first transmitter, a first measurement receiver, and a first reference receiver. The first transmitter converts the digital signal of the first frequency band into an analog signal and outputs the analog signal as a radio frequency signal of the first frequency band to the first measurement receiver and the first reference receiver. By using the digital-to-analog converter and the analog-to-digital converter to form a low-frequency receiving and transmitting system with the coupler, the working range from low frequency to Hz level of the vector network analyzer can be realized, and the output gain and the power level of high frequency are not influenced.
Description
Technical Field
The invention relates to the technical field of communication test instruments and meters, in particular to a radio frequency transceiver for a vector network analyzer and the vector network analyzer.
Background
The vector network analyzer is used as a universal S parameter testing instrument, is widely applied to various scientific institutions, laboratories and production lines, and is used for S parameter measurement, such as various antenna tests, cavity filter tests, dielectric filter tests, circulator tests, coupler tests, splitter combiner tests and the like. The main working frequency bands of the vector network analyzer are 5Hz-3GHz,9KHz-4.5GHz,9KHz-9GHz,100KHz-13.5GHz,100KHz-26.5GHz and 10MHz-50GHz. With the continuous updating and iteration of the device under test, the measuring instrument must also be continuously developed towards high frequency, precision and ultra-wideband. Vector network analyzers are a vital role in measuring instruments, and are critical to the analysis of Radio Frequency (RF) and microwave components that measure various passive and active devices, including filters, antennas and power amplifiers. The vector network analyzer is advanced towards high frequency, and meanwhile, the loss of a low frequency area is larger and larger due to the limitation of a blocking capacitor in a gain amplifier module, so if the vector network analyzer is advanced towards a working area of a higher frequency band, the vector network analyzer is likely to lose a Hz level, even a KHz level working frequency band, and the MHz level is taken as a starting point. For example, in a radio frequency circuit, a 2.2uF capacitor is used, and the loss is relatively small at the frequency point of 9KHz at the low frequency; at a high frequency of 13.5GHz, 26.5GHz or 50GHz, the loss can reach 3dB or even higher. If a radio frequency link uses n 2.2uF capacitors, the loss at high frequencies can reach n x 3dB. If a 100nF capacitor is used in the radio frequency circuit, the loss is relatively small at the frequency point of high frequency 13.5GHz, 26.5GHz or 50 GHz; but at a frequency of 9KHz this capacitance will produce a loss of at least 30dB. If a radio frequency link uses n 100nF capacitors, the loss at low frequencies can reach n x 30dB. In summary, due to the limitation of the amplifying module, there is a paradox in the ultra wideband vector network analyzer beyond a certain range, that is, the power level at the low frequency and the high frequency in the working frequency band cannot be kept consistent, if the power level at the high frequency is to be increased, the power level at the low frequency must be reduced; if it is desired to ensure that the power level at low frequencies is not lost, it is imperative that the power level at high frequencies is lost. Therefore, in the measurement and transmission system of the vector network analyzer, high frequency and low frequency cannot coexist.
Disclosure of Invention
In a first aspect, an embodiment provides a radio frequency transceiver for a vector network analyzer, including a first measurement output, a first reference output, a transceiver connection, a first transceiver module, and a second transceiver module;
The first transceiver module is connected with the transceiver connecting end and is used for receiving and transmitting radio frequency signals of a first frequency band for the vector network analyzer through the transceiver connecting end;
The second transceiver module is connected with the transceiver connecting end and is used for receiving and transmitting radio frequency signals of a second frequency band for the vector network analyzer through the transceiver connecting end;
The frequency of the radio frequency signal of the first frequency band is lower than the frequency of the radio frequency signal of the second frequency band;
The first transceiver module comprises a first transmitter, a first measurement receiver and a first reference receiver;
The first transmitter comprises a first digital-to-analog converter and a first coupler; the first digital-to-analog converter is connected with the first coupler and is used for converting the digital signal of the first frequency band into an analog signal and then outputting the analog signal to the first coupler as a radio frequency signal of the first frequency band;
The coupling connection end of the first coupler is connected with the first measuring receiver and the first reference receiver, the input connection end of the first coupler is connected with the first digital-to-analog converter, and the output end of the first coupler is connected with the transceiver connection end; the first coupler is configured to send the analog signal of the first frequency band output by the first digital-to-analog converter to the transceiver connection end, the first measurement receiver and/or the first reference receiver;
The first measurement receiver is connected with the first measurement output end and is used for amplifying the analog signal of the first frequency band output by the first coupler and then converting the amplified analog signal into a digital signal, and outputting the digital signal of the first frequency band obtained by conversion through the first measurement output end so as to be used for measuring the digital signal of the first frequency band by the vector network analyzer;
the first reference receiver is connected with the first reference output end, and is used for amplifying the analog signal of the first frequency band output by the first coupler, converting the amplified analog signal into a digital signal, and outputting the digital signal of the first frequency band obtained by conversion through the first reference output end so as to be used for the vector network analyzer to take the digital signal of the first frequency band as a reference signal.
In one embodiment, the radio frequency transceiver further comprises a direct current paranoid circuit; the direct current paranoid circuit is connected with the transceiver connecting end and used for providing bias voltage and/or bias current for a device to be measured.
In one embodiment, the first measurement receiver includes a first measurement amplifier and a first analog-to-digital converter; the first measuring amplifier is respectively connected with the first coupler and the first digital-to-analog converter and is used for amplifying the analog signal of the first frequency band output by the first coupler and then transmitting the amplified analog signal to the first analog-to-digital converter;
The first analog-to-digital converter is connected with the first measurement output end and is used for converting the amplified analog signal of the first frequency band into a digital signal and outputting the digital signal through the first measurement output end.
In one embodiment, the first reference receiver includes a first reference amplifier and a second analog-to-digital converter; the first reference amplifier is respectively connected with the first coupler and the second analog-to-digital converter and is used for amplifying the analog signal of the first frequency band output by the first coupler and then transmitting the amplified analog signal to the second analog-to-digital converter;
the second analog-to-digital converter is connected with the first reference output end and is used for converting the amplified analog signals of the first frequency band into digital signals and outputting the digital signals through the first reference output end.
In one embodiment, the radio frequency transceiver further comprises a second measurement output and a second reference output;
The second transceiver module comprises a second transmitter, a second measurement receiver and a second reference receiver;
The second transmitter includes a radio frequency source and a second coupler; the radio frequency source is connected with the second coupler and is used for outputting radio frequency signals of the second frequency band to the second coupler; the coupling connection end of the second coupler is connected with the second measurement receiver and the second reference receiver, the input connection end of the second coupler is connected with the radio frequency source, and the output end of the second coupler is connected with the transceiver connection end; the second coupler is configured to send the radio frequency signal in the second frequency band output by the radio frequency source to the transceiver connection end, the second measurement receiver and/or the second reference receiver;
The second measurement receiver is connected with the second measurement output end and is used for amplifying, mixing and filtering the radio frequency signals of the second frequency band output by the second coupler and outputting the radio frequency signals through the second measurement output end so as to be used for measuring the radio frequency signals of the second frequency band by the vector network analyzer;
The second reference receiver is connected with the second reference output end and is used for amplifying, mixing and filtering the radio frequency signal of the second frequency band output by the second coupler and then outputting the radio frequency signal of the second frequency band through the second reference output end, so that the vector network analyzer takes the radio frequency signal of the second frequency band as a reference signal.
In one embodiment, the second measurement receiver includes a second measurement amplifier, a first measurement mixer, a first measurement source and a first measurement filter;
The second measurement amplifier is connected with the second coupler and the first measurement mixer, and is used for amplifying the radio frequency signal of the second frequency band output by the second coupler and outputting the amplified radio frequency signal of the second frequency band to the first measurement mixer;
the first measuring local vibration source is connected with the first measuring mixer and is used for outputting local vibration signals to the first measuring mixer;
the first measurement mixer is used for mixing the amplified radio frequency signal of the second frequency band with the local oscillation signal output by the first measurement local oscillation source and sending the mixed radio frequency signal of the second frequency band to the first measurement filter;
the first measurement filter is connected with the second measurement output end and is used for outputting the filtered radio frequency signals of the second frequency band through the second measurement output end.
In one embodiment, the second reference receiver includes a second reference amplifier, a first reference mixer, a first reference local vibration source, and a first reference filter;
The second reference amplifier is connected with the second coupler and the first reference mixer, and is used for amplifying the radio frequency signal of the second frequency band output by the second coupler and outputting the amplified radio frequency signal of the second frequency band to the first reference mixer;
The first reference local oscillation source is connected with the first reference mixer and is used for outputting local oscillation signals to the first reference mixer;
The first reference mixer is configured to mix the amplified radio frequency signal in the second frequency band with the local oscillator signal output by the first reference local oscillator source, and send the mixed radio frequency signal in the second frequency band to the first reference filter;
The first reference filter is connected with the second reference output end and is used for outputting the filtered radio frequency signals of the second frequency band through the second reference output end.
In one embodiment, the frequency range of the radio frequency signal in the first frequency band is 2Hz-10MHz.
In an embodiment, the frequency range of the radio frequency signal in the second frequency band is 10MHz-26.5GHz, 10MHz-50GHz or 10MHz-67.5GHz.
In a second aspect, an embodiment provides a vector network analyzer comprising the radio frequency transceiver of the first aspect.
According to the radio frequency transceiver of the embodiment, the digital-to-analog converter and the analog-to-digital converter are utilized to form a low frequency transceiver system with the coupler, so that the working range from low frequency to Hz level of the vector network analyzer can be realized, and the output gain and the power level of high frequency are not influenced.
Drawings
FIG. 1 is a schematic diagram of a circuit frame of a radio frequency transceiver;
fig. 2 is a schematic circuit frame diagram of a radio frequency transceiver in one embodiment.
Detailed Description
The application will be described in further detail below with reference to the drawings by means of specific embodiments. Wherein like elements in different embodiments are numbered alike in association. In the following embodiments, numerous specific details are set forth in order to provide a better understanding of the present application. However, one skilled in the art will readily recognize that some of the features may be omitted, or replaced by other elements, materials, or methods in different situations. In some instances, related operations of the present application have not been shown or described in the specification in order to avoid obscuring the core portions of the present application, and may be unnecessary to persons skilled in the art from a detailed description of the related operations, which may be presented in the description and general knowledge of one skilled in the art.
Furthermore, the described features, operations, or characteristics of the description may be combined in any suitable manner in various embodiments. Also, various steps or acts in the method descriptions may be interchanged or modified in a manner apparent to those of ordinary skill in the art. Thus, the various orders in the description and drawings are for clarity of description of only certain embodiments, and are not meant to be required orders unless otherwise indicated.
The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated.
The transmitter module and the receiver module in the vector network analyzer are affected by the blocking capacitance in the amplifier module, the range of the working frequency band of the transmitter module and the receiver module can be limited in a certain area, and further, different vector network analyzers are needed for measuring devices to be measured in different frequency bands. For example, you need to test two different devices to be tested, one operating frequency range is 9KHz-9GHz, and the other operating frequency range is 10MHz-50GHz, and you need two different vector network analyzers to test. Because in the vector network analyzer, when the working frequency point can reach 50GHz, the loss of the blocking capacitor in the gain amplification module at the low frequency 9KHz is overlarge, so that the measuring instrument cannot work normally; if the vector network analyzer wants to normally test a device under test with an operating frequency of 9KHz, it must not test a device under test at 50 GHz. At present, the situation not only increases the cost of the test, but also increases the space required by the test, which is unfavorable for research and development and debugging, production line running water test and unnecessary after-sale maintenance cost in the later period.
Referring to fig. 1, a schematic circuit diagram of a radio frequency transceiver of a vector network analyzer includes a transmitter 1, a measurement receiver 2 and a reference receiver 3. The transmitter 1 comprises a radio frequency source and a transceiver coupler, and the output end of the transmitter is a transceiver connection end for receiving and transmitting radio frequency signals by the vector network analyzer. The coupling end of the transceiver coupler is connected to the measurement receiver 2 and the reference receiver 3. The circuit structures of the measuring receiver 2 and the reference receiver 3 are the same, and the measuring receiver respectively comprises a low-phase noise amplifier, a local vibration source, a mixer and a filter, and the output ends of the measuring receiver 2 and the reference receiver 3 are an intermediate frequency measuring output end and an intermediate frequency reference output end respectively and are used for outputting intermediate frequency measuring signals and reference signals. The bias circuit 4 is an optional application of the vector network analyzer, namely, bias voltage and bias current are provided to the device to be tested from the inside of the vector network analyzer. The radio frequency transceiver as shown in fig. 1 is generally responsible for transmitting and receiving only in the operating frequency bands between 10MHz-26.5GHz, 10MHz-50GHz, and 10MHz-67.5 GHz.
Vector network analyzers currently on the market mainly include 5Hz-3GHz,9KHz-4.5GHz,9KHz-9GHz,100KHz-13.5GHz,100KHz-26.5GHz and 10MHz-50GHz. According to the main working frequency band, the working frequency point of the Hz level cannot be compatible with the working frequency band above 3GHz in the measuring instrument of the same model, so that the low-frequency area is not abandoned while the high-frequency area is tested, and the vector network analyzer with the low-frequency transceiver module is added in a small number under the condition that the high-frequency transceiver module is not influenced. The method has the advantages of comprehensively considering the fusion of high and low frequency bands, saving cost, controlling the space volume, enabling the machine to be convenient and fast, being easy to operate and meeting the demands of clients. This is a difficult problem in the development of vector network analyzers at this stage.
The application discloses a radio frequency transceiver, which solves the technical problem of incompatibility of high frequency and low frequency of a vector network analyzer so as to improve the working bandwidth of the vector network analyzer. By using a direct current paranoid circuit arranged at the connecting end of a transceiver in the vector network analyzer, a transceiver unit for low-frequency signals is additionally built by adding a digital-to-analog conversion circuit, an analog-to-digital conversion circuit and a coupler, and the combination of the direct current paranoid circuit and the transceiver unit for low-frequency signals can enable the measuring frequency band of the vector network analyzer to be low to a Hz level and high to 26.5GHz, 50GHz, even 67.5GHz and other levels.
Embodiment one:
Referring to fig. 2, a schematic circuit diagram of an rf transceiver according to an embodiment includes a first measurement output, a first reference output, a transceiver connection, a first transceiver module 100, and a second transceiver module 200. The first transceiver module 100 is connected to the transceiver connection end, and is configured to transmit and receive radio frequency signals of the first frequency band for the vector network analyzer through the transceiver connection end. The second transceiver module 200 is connected to the transceiver connection end, and is configured to transmit and receive radio frequency signals of the second frequency band for the vector network analyzer through the transceiver connection end. The frequency of the radio frequency signal of the first frequency band is lower than the frequency of the radio frequency signal of the second frequency band. The first transceiver module 100 includes a first transmitter 10, a first measurement receiver 20, and a first reference receiver 30. The first transmitter 10 includes a first digital-to-analog converter 11 and a first coupler 12, where the first digital-to-analog converter 11 is connected to the first coupler 12, and is configured to convert a digital signal in a first frequency band into an analog signal, and then output the analog signal as a radio frequency signal in the first frequency band to the first coupler 10. The coupling connection of the first coupler 12 is connected to the first measurement receiver 20 and the first reference receiver 30, the input connection of the first coupler 12 is connected to the first digital-to-analog converter 11, and the output of the first coupler 12 is connected to the transceiver connection. The first coupler 12 is configured to send the analog signal in the first frequency band output by the first digital-to-analog converter 11 to the transceiver connection, the first measurement receiver 20, and/or the first reference receiver 30. The first measurement receiver 20 is connected to the first measurement output end, and is configured to amplify the analog signal in the first frequency band output by the first coupler 12, then convert the amplified analog signal into a digital signal, and output the digital signal in the first frequency band obtained by conversion through the first measurement output end, so as to be used for measuring the digital signal in the first frequency band by the vector network analyzer. The first reference receiver 30 is connected to the first reference output end, and is configured to amplify the analog signal in the first frequency band output by the first coupler 12, then convert the amplified analog signal into a digital signal, and output the digital signal in the first frequency band obtained by conversion through the first reference output end, so that the digital signal in the first frequency band is used as a reference signal by the vector network analyzer.
In one embodiment, the radio frequency transceiver further includes a dc bias voltage and/or bias current circuit 300, where the dc bias voltage and/or bias current circuit 300 is coupled to the transceiver connection for providing bias voltage and/or bias current to the device to be measured.
In an embodiment, the first measurement receiver 20 includes a first measurement amplifier 21 and a first analog-to-digital converter 22, where the first measurement amplifier 21 is connected to the first coupler 12 and the first analog-to-digital converter 22, respectively, and is configured to amplify an analog signal in a first frequency band output by the first coupler 12 and send the amplified analog signal to the first analog-to-digital converter 22. The first analog-to-digital converter 22 is connected to the first measurement output end, and is configured to convert the amplified analog signal in the first frequency band into a digital signal and output the digital signal through the first measurement output end. In one embodiment, the first reference receiver 30 includes a first reference amplifier 31 and a second analog-to-digital converter 32. The first reference amplifier 31 is connected to the first coupler 12 and the second digital-to-analog converter 32, and is configured to amplify the analog signal in the first frequency band output by the first coupler 12 and send the amplified analog signal to the second digital-to-analog converter 32. The second analog-to-digital converter 32 is connected to the first reference output terminal, and is configured to convert the amplified analog signal of the first frequency band into a digital signal and output the digital signal through the first reference output terminal.
In one embodiment, the radio frequency transceiver further comprises a second measurement output and a second reference output. The second transceiver module 200 includes a second transmitter 40, a second measurement receiver 50, and a second reference receiver 60. The second transmitter 40 comprises a radio frequency source 41 and a second coupler 42. The radio frequency source 41 is connected to the second coupler 42, and is configured to output a radio frequency signal in the second frequency band to the second coupler 42, where a coupling connection end of the second coupler 42 is connected to the second measurement receiver 50 and the second reference receiver 60, an input connection end of the second coupler 42 is connected to the radio frequency source 41, and an output end of the second coupler 42 is connected to the transceiver connection end. The second coupler 42 is configured to transmit the radio frequency signal in the second frequency band output by the radio frequency source 41 to the transceiver connection, the second measurement receiver 50 and/or the second reference receiver 60. The second measurement receiver 50 is connected to the second measurement output end, and is configured to amplify, mix and filter the radio frequency signal in the second frequency band output by the second coupler 42, and output the radio frequency signal in the second frequency band through the second measurement output end, so as to be used for measuring the radio frequency signal in the second frequency band by the vector network analyzer. The second reference receiver 60 is connected to the second reference output end, and is configured to amplify, mix and filter the radio frequency signal of the second frequency band output by the second coupler 42, and output the radio frequency signal of the second frequency band through the second reference output end, so as to use the radio frequency signal of the second frequency band as a reference signal by the vector network analyzer.
In one embodiment, the second measurement receiver 50 includes a second measurement amplifier 51, a first measurement mixer 53, a first measurement source 52, and a first measurement filter 54. The second measurement amplifier 51 is connected to the second coupler 42 and the first measurement mixer 53, and is configured to amplify the radio frequency signal in the second frequency band output by the second coupler 42, and output the amplified radio frequency signal in the second frequency band to the first measurement mixer 53. The first measurement local oscillation source 52 is connected to the first measurement mixer 53, and is configured to output a local oscillation signal to the first measurement mixer 53. The first measurement mixer 53 is configured to mix the amplified radio frequency signal in the second frequency band with the local oscillation signal output by the first measurement local oscillation source 52, and send the mixed radio frequency signal in the second frequency band to the first measurement filter 54. The first measurement filter 54 is connected to the second measurement output terminal, and is configured to output the filtered radio frequency signal in the second frequency band through the second measurement output terminal.
In one embodiment, the second reference receiver 60 includes a second reference amplifier 61, a first reference mixer 63, a first reference local vibration source 62, and a first reference filter 64. The second reference amplifier 61 is connected to the second coupler 42 and the first reference mixer 63, and is configured to amplify the radio frequency signal in the second frequency band output by the second coupler 42, and output the amplified radio frequency signal in the second frequency band to the first reference mixer 63. The first reference local oscillation source 62 is connected to the first reference mixer 63, and is configured to output a local oscillation signal to the first reference mixer 63. The first reference mixer 63 is configured to mix the amplified radio frequency signal in the second frequency band with the local oscillation signal output by the first reference local oscillation source 62, and send the mixed radio frequency signal in the second frequency band to the first reference filter 64. The first reference filter 64 is connected to the second reference output terminal, and is configured to output the filtered radio frequency signal in the second frequency band through the second reference output terminal.
In one embodiment, the frequency range of the radio frequency signal in the first frequency band is 2Hz-10MHz. In one embodiment, the frequency range of the radio frequency signal in the second frequency band is 10MHz-26.5GHz, 10MHz-50GHz or 10MHz-67.5GHz.
In one embodiment of the application, a vector network analyzer is also disclosed, comprising a radio frequency transceiver as described above.
The radio frequency transceiver disclosed in the embodiment of the application is provided with a low-frequency transceiver module (a first transceiver module) and a high-frequency transceiver module (a second transceiver module) respectively. The low-frequency receiving and transmitting module forms a low-frequency receiving and transmitting system by using a DAC module (digital-to-analog converter) and an ADC module (analog-to-digital converter) and a coupler, so that the working range from low frequency to Hz level can be realized, and the output gain and the power level of high frequency are not influenced. The method can be applied to a vector network analyzer and a signal source. The whole low-frequency transceiver module circuit is simple in structure, can be realized through a common ADC module and a common DAC module, is high in system stability, wide in working frequency band, good in port standing wave, good in coupling degree and low in cost, and is beneficial to mass production. In addition, the low-frequency receiving and transmitting module directly outputs digital signals, so that the data analysis of the vector network analyzer is faster and more accurate. The vector network analyzer applying the radio frequency transceiver disclosed by the application has wide working frequency band, wide application range, low measurement range as high as 67.5GHz (the working frequency band is 2Hz-26.5GHz, 2Hz-50GHz or 2Hz-67.5 GHz). The radio frequency transceiver has the advantages of simple structure, easy integration of modules, convenient PCB design, space saving, good port standing wave, small loss, improvement of the measurement precision and range of the vector network analyzer, and contribution to the rapid development of the vector network analyzer.
The radio frequency transceiver disclosed by the embodiment of the application comprises a first transceiver module and a second transceiver module, wherein the first transceiver module is used for receiving and transmitting radio frequency signals of a first frequency band for the vector network analyzer, and the second transceiver module is used for receiving and transmitting radio frequency signals of a second frequency band for the vector network analyzer, and the frequency of the radio frequency signals of the first frequency band is lower than that of the second frequency band. The first transceiver module includes a first transmitter, a first measurement receiver, and a first reference receiver. The first transmitter converts the digital signal of the first frequency band into an analog signal and outputs the analog signal as a radio frequency signal of the first frequency band to the first measurement receiver and the first reference receiver. By using the digital-to-analog converter and the analog-to-digital converter to form a low-frequency receiving and transmitting system with the coupler, the working range from low frequency to Hz level of the vector network analyzer can be realized, and the output gain and the power level of high frequency are not influenced.
The foregoing description of the application has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the application pertains, based on the idea of the application.
Claims (10)
1. A radio frequency transceiver for a vector network analyzer, comprising a first measurement output, a first reference output, a transceiver connection, a first transceiver module, and a second transceiver module;
The first transceiver module is connected with the transceiver connecting end and is used for receiving and transmitting radio frequency signals of a first frequency band for the vector network analyzer through the transceiver connecting end;
The second transceiver module is connected with the transceiver connecting end and is used for receiving and transmitting radio frequency signals of a second frequency band for the vector network analyzer through the transceiver connecting end;
The frequency of the radio frequency signal of the first frequency band is lower than the frequency of the radio frequency signal of the second frequency band;
The first transceiver module comprises a first transmitter, a first measurement receiver and a first reference receiver;
The first transmitter comprises a first digital-to-analog converter and a first coupler; the first digital-to-analog converter is connected with the first coupler and is used for converting the digital signal of the first frequency band into an analog signal and then outputting the analog signal to the first coupler as a radio frequency signal of the first frequency band;
The coupling connection end of the first coupler is connected with the first measuring receiver and the first reference receiver, the input connection end of the first coupler is connected with the first digital-to-analog converter, and the output end of the first coupler is connected with the transceiver connection end; the first coupler is configured to send the analog signal of the first frequency band output by the first digital-to-analog converter to the transceiver connection end, the first measurement receiver and/or the first reference receiver;
The first measurement receiver is connected with the first measurement output end and is used for amplifying the analog signal of the first frequency band output by the first coupler and then converting the amplified analog signal into a digital signal, and outputting the digital signal of the first frequency band obtained by conversion through the first measurement output end so as to be used for measuring the digital signal of the first frequency band by the vector network analyzer;
the first reference receiver is connected with the first reference output end, and is used for amplifying the analog signal of the first frequency band output by the first coupler, converting the amplified analog signal into a digital signal, and outputting the digital signal of the first frequency band obtained by conversion through the first reference output end so as to be used for the vector network analyzer to take the digital signal of the first frequency band as a reference signal.
2. The radio frequency transceiver of claim 1, further comprising a direct current paranoid circuit; the direct current paranoid circuit is connected with the transceiver connecting end and used for providing bias voltage and/or bias current for a device to be measured.
3. The radio frequency transceiver of claim 1, wherein the first measurement receiver comprises a first measurement amplifier and a first analog-to-digital converter; the first measuring amplifier is respectively connected with the first coupler and the first digital-to-analog converter and is used for amplifying the analog signal of the first frequency band output by the first coupler and then transmitting the amplified analog signal to the first analog-to-digital converter;
The first analog-to-digital converter is connected with the first measurement output end and is used for converting the amplified analog signal of the first frequency band into a digital signal and outputting the digital signal through the first measurement output end.
4. The radio frequency transceiver of claim 1, wherein the first reference receiver comprises a first reference amplifier and a second analog-to-digital converter; the first reference amplifier is respectively connected with the first coupler and the second analog-to-digital converter and is used for amplifying the analog signal of the first frequency band output by the first coupler and then transmitting the amplified analog signal to the second analog-to-digital converter;
the second analog-to-digital converter is connected with the first reference output end and is used for converting the amplified analog signals of the first frequency band into digital signals and outputting the digital signals through the first reference output end.
5. The radio frequency transceiver of claim 1, further comprising a second measurement output and a second reference output;
The second transceiver module comprises a second transmitter, a second measurement receiver and a second reference receiver;
The second transmitter includes a radio frequency source and a second coupler; the radio frequency source is connected with the second coupler and is used for outputting radio frequency signals of the second frequency band to the second coupler; the coupling connection end of the second coupler is connected with the second measurement receiver and the second reference receiver, the input connection end of the second coupler is connected with the radio frequency source, and the output end of the second coupler is connected with the transceiver connection end; the second coupler is configured to send the radio frequency signal in the second frequency band output by the radio frequency source to the transceiver connection end, the second measurement receiver and/or the second reference receiver;
The second measurement receiver is connected with the second measurement output end and is used for amplifying, mixing and filtering the radio frequency signals of the second frequency band output by the second coupler and outputting the radio frequency signals through the second measurement output end so as to be used for measuring the radio frequency signals of the second frequency band by the vector network analyzer;
The second reference receiver is connected with the second reference output end and is used for amplifying, mixing and filtering the radio frequency signal of the second frequency band output by the second coupler and then outputting the radio frequency signal of the second frequency band through the second reference output end, so that the vector network analyzer takes the radio frequency signal of the second frequency band as a reference signal.
6. The radio frequency transceiver of claim 5, wherein the second measurement receiver comprises a second measurement amplifier, a first measurement mixer, a first measurement local vibration source, and a first measurement filter;
The second measurement amplifier is connected with the second coupler and the first measurement mixer, and is used for amplifying the radio frequency signal of the second frequency band output by the second coupler and outputting the amplified radio frequency signal of the second frequency band to the first measurement mixer;
the first measuring local vibration source is connected with the first measuring mixer and is used for outputting local vibration signals to the first measuring mixer;
the first measurement mixer is used for mixing the amplified radio frequency signal of the second frequency band with the local oscillation signal output by the first measurement local oscillation source and sending the mixed radio frequency signal of the second frequency band to the first measurement filter;
the first measurement filter is connected with the second measurement output end and is used for outputting the filtered radio frequency signals of the second frequency band through the second measurement output end.
7. The radio frequency transceiver as defined in claim 5, wherein the second reference receiver comprises a second reference amplifier, a first reference mixer, a first reference local vibration source and a first reference filter;
The second reference amplifier is connected with the second coupler and the first reference mixer, and is used for amplifying the radio frequency signal of the second frequency band output by the second coupler and outputting the amplified radio frequency signal of the second frequency band to the first reference mixer;
The first reference local oscillation source is connected with the first reference mixer and is used for outputting local oscillation signals to the first reference mixer;
The first reference mixer is configured to mix the amplified radio frequency signal in the second frequency band with the local oscillator signal output by the first reference local oscillator source, and send the mixed radio frequency signal in the second frequency band to the first reference filter;
The first reference filter is connected with the second reference output end and is used for outputting the filtered radio frequency signals of the second frequency band through the second reference output end.
8. The radio frequency transceiver of claim 1, wherein the radio frequency signal in the first frequency band has a frequency range of 2Hz to 10MHz.
9. The radio frequency transceiver of claim 1, wherein the frequency range of the radio frequency signal of the second frequency band is 10MHz-26.5GHz, 10MHz-50GHz, or 10MHz-67.5GHz.
10. A vector network analyser comprising a radio frequency transceiver as claimed in any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202322539736.3U CN220798275U (en) | 2023-09-19 | 2023-09-19 | Radio frequency transceiver for vector network analyzer and vector network analyzer |
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| CN202322539736.3U CN220798275U (en) | 2023-09-19 | 2023-09-19 | Radio frequency transceiver for vector network analyzer and vector network analyzer |
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