CN113992556A - Ultra-wideband signal analysis and processing system supporting 5G millimeter wave frequency band - Google Patents
Ultra-wideband signal analysis and processing system supporting 5G millimeter wave frequency band Download PDFInfo
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- CN113992556A CN113992556A CN202111404578.XA CN202111404578A CN113992556A CN 113992556 A CN113992556 A CN 113992556A CN 202111404578 A CN202111404578 A CN 202111404578A CN 113992556 A CN113992556 A CN 113992556A
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- Y02D30/00—Reducing energy consumption in communication networks
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Abstract
The invention relates to an ultra-wideband signal analysis processing system supporting a 5G millimeter wave frequency band, which comprises a first path switching unit, a second path switching unit, a first path switching unit and a second path switching unit, wherein the first path switching unit divides a signal into a Sub6 frequency band and a millimeter wave frequency band and enters different paths for processing; the Sub6 frequency band preselection filtering unit carries out-of-band suppression; the Sub6 power level adjusting unit performs level amplification and attenuation; the first broadband quadrature demodulator mixes the low-frequency broadband signal with the low-frequency local oscillation signal; the first high-purity frequency synthesis local oscillation module provides a low-frequency broadband local oscillation signal; the first ultrahigh dynamic differential amplifier performs gain amplification; the first anti-aliasing filter performs low-pass filtering; a millimeter wave frequency band pre-selection filtering unit; a millimeter wave power level adjusting unit; a second wideband quadrature demodulator; a second high-purity frequency synthesis local oscillator module; a second ultra-high dynamic differential amplifier; the baseband processing unit performs analysis processing. By adopting the ultra-wideband signal analysis and processing system supporting the 5G millimeter wave frequency band, the ultra-wideband signal analysis of the millimeter wave frequency band can be realized.
Description
Technical Field
The invention relates to the field of wireless communication, in particular to the field of ultra-wideband signal analysis, and specifically relates to an ultra-wideband signal analysis processing system supporting a 5G millimeter wave frequency band.
Background
According to the 3GPP standard, 5G frequency bands are divided into FR1(450 MHz-6 GHz) and FR2(24.25 GHz-52.6 GHz), and the bandwidth of FR2 millimeter wave frequency band is required to support 400MHz, so that the ultra-wideband signal analysis device supporting the 5G millimeter wave frequency band still remains a technical difficulty in the field of wireless communication. The traditional broadband signal analysis device usually only supports less than 6GHz, even if the traditional broadband signal analysis device supports a millimeter wave frequency band, the analysis bandwidth is difficult to reach 400MHz, and the traditional device cannot realize continuous coverage of 400 MHz-54.0 GHz full frequency band, so that the prior technical scheme cannot meet the test requirement of the 5G communication technology.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the ultra-wideband signal analysis and processing system which can meet the requirements of full-band continuous coverage, has high precision and wider application range and supports the 5G millimeter wave band.
In order to achieve the above purpose, the ultra-wideband signal analyzing and processing system supporting 5G millimeter wave frequency band of the present invention is as follows:
the ultra-wideband signal analysis and processing system supporting the 5G millimeter wave frequency band is mainly characterized by comprising:
the first path switching unit is used for dividing the ultra-wideband input signal into a Sub6 frequency band and a millimeter wave frequency band, and respectively entering different paths of the Sub6 frequency band pre-selection filtering unit and the millimeter wave frequency band pre-selection filtering unit for processing;
the Sub6 frequency band preselection filtering unit is connected with the first path switching unit and is used for carrying out-of-band suppression on Sub6 frequency band broadband signals;
the Sub6 power level adjusting unit is connected with the Sub6 frequency band preselection filtering unit and is used for carrying out level amplification and attenuation on the filtered low-frequency broadband signal;
the first broadband quadrature demodulator is connected with the Sub6 power level adjusting unit and is used for mixing the low-frequency broadband signal with the low-frequency local oscillation signal to realize zero intermediate frequency output of the low-frequency broadband signal;
the first high-purity frequency synthesis local oscillator module is connected with the first broadband orthogonal demodulator and is used for providing a low-frequency broadband local oscillator signal for frequency mixing of the first broadband orthogonal demodulator;
the first ultrahigh dynamic differential amplifier is connected with the first high-purity frequency synthesis local oscillator module and is used for performing gain amplification on the low-frequency broadband zero intermediate-frequency signal after frequency mixing;
the first anti-aliasing filter is connected with the first ultrahigh dynamic differential amplifier and is used for low-pass filtering the amplified signal and eliminating out-of-band interference;
the millimeter wave frequency band pre-selection filtering unit is connected with the first access switching unit and is used for carrying out-of-band suppression on the millimeter wave frequency band broadband signal;
the millimeter wave power level adjusting unit is connected with the millimeter wave frequency band preselection filtering unit and is used for carrying out level amplification and attenuation on the millimeter wave broadband signal after filtering;
the second broadband orthogonal demodulator is connected with the millimeter wave power level adjusting unit and is used for mixing the millimeter wave broadband signal with the millimeter wave local oscillator signal to realize zero intermediate frequency output of the millimeter wave broadband signal;
the second high-purity frequency synthesis local oscillator module is connected with the second broadband orthogonal demodulator and is used for providing millimeter wave broadband local oscillator signals for frequency mixing of the second broadband orthogonal demodulator;
the second ultrahigh dynamic differential amplifier is connected with the second high-purity frequency synthesis local oscillator module and is used for performing gain amplification on the millimeter wave broadband zero intermediate frequency signal after frequency mixing;
the second anti-aliasing filter is connected with the second ultrahigh dynamic differential amplifier and is used for low-pass filtering the amplified signal and eliminating out-of-band interference;
and the baseband processing unit is connected with the first anti-aliasing filter and the second anti-aliasing filter and is used for analyzing and processing the filtered broadband data.
Preferably, the Sub6 frequency band pre-selection filtering unit includes:
the input end of the first broadband matching circuit is connected with the first path switching unit and is used for performing impedance matching on a Sub6 frequency band broadband input signal and inhibiting out-of-band self-excitation;
the first band-pass filter unit comprises a plurality of different Sub6 frequency range and is used for carrying out-of-band suppression on Sub6 frequency band broadband signal segmented filtering;
the output end of the second broadband matching circuit is connected with the Sub6 power level adjusting unit and is used for carrying out impedance matching on the filtered low-frequency broadband signal and inhibiting out-of-band self-excitation;
and the second path switching unit is respectively connected with the first broadband matching circuit and the first band-pass filter unit, and the first band-pass filter unit and the second broadband matching circuit and is used for sectionally switching the broadband signal of the Sub6 frequency band.
Preferably, the Sub6 power level adjustment unit comprises:
the first broadband adjustable attenuation module is connected with the Sub6 frequency band preselection filtering unit and is used for carrying out power level adjustable attenuation on the input low-frequency broadband signal;
the first broadband amplifying unit is connected with the first broadband adjustable attenuation module and used for amplifying the power level of the attenuated signal;
the second broadband adjustable attenuation module is connected with the first broadband amplification unit and is used for carrying out power level adjustable attenuation on the amplified low-frequency broadband signal;
and the second broadband amplifying unit is connected with the second broadband adjustable attenuation module and used for amplifying the power level of the attenuated signal again and meeting the requirement of the power level of the access by combination.
Preferably, the millimeter wave frequency band preselection filter unit includes:
the input end of the third broadband matching circuit is connected with the first path switching unit and is used for performing impedance matching on the millimeter wave frequency band broadband input signal and inhibiting out-of-band self-excitation;
the second band-pass filter unit comprises a plurality of different millimeter wave frequency range ranges and is used for carrying out-of-band suppression on the millimeter wave frequency range broadband signal segmented filtering;
the output end of the fourth broadband matching circuit is connected with the millimeter wave power level adjusting unit and is used for performing impedance matching on the filtered millimeter wave broadband signal and inhibiting out-of-band self-excitation;
and the third path switching unit is respectively connected with the third broadband matching circuit and the second bandpass filter unit, and the second bandpass filter unit and the fourth broadband matching circuit and is used for carrying out sectional switching on the millimeter wave frequency band broadband signals.
Preferably, the millimeter wave power level adjusting unit includes:
the third broadband adjustable attenuation module is connected with the millimeter wave frequency band preselection filtering unit and is used for carrying out power level adjustable attenuation on the input millimeter wave broadband signal;
the third broadband amplifying unit is connected with the third broadband adjustable attenuation module and used for amplifying the power level of the attenuated signal;
the fourth broadband adjustable attenuation module is connected with the third broadband amplifying unit and is used for carrying out power level adjustable attenuation on the amplified millimeter wave broadband signals;
and the fourth broadband amplifying unit is connected with the fourth broadband adjustable attenuation module and used for amplifying the power level of the attenuated signal again and meeting the requirement of the power level of the access by combination.
Preferably, the baseband processing unit includes:
the high-speed ADC module is respectively connected with the first anti-aliasing filter and the second anti-aliasing filter and is used for carrying out analog-to-digital conversion on the broadband data filtered by the anti-aliasing filter;
and the data acquisition processing module is connected with the high-speed ADC module and is used for carrying out high-speed data processing on the converted digital signal to realize ultra-wideband signal analysis.
The system for analyzing and processing the ultra-wideband signal supporting the 5G millimeter wave frequency band meets the requirements of 400 MHz-54.0 GHz full-band continuous coverage and 1GHz analysis bandwidth, is suitable for 5G communication test, can realize the analysis of the ultra-wideband signal of the millimeter wave frequency band 1GHz, and meets the test requirements of the 5G communication technology.
Drawings
Fig. 1 is a circuit structure diagram of an ultra-wideband signal analyzing and processing system supporting a 5G millimeter wave frequency band according to the present invention.
Fig. 2 is a schematic diagram of a demodulation result of an input millimeter wave ultra-wideband communication signal according to an embodiment of the ultra-wideband signal analysis processing system supporting a 5G millimeter wave band.
Reference numerals:
1 first path switching unit
2 Sub6 frequency band preselection filter unit
201 second path switching unit
3 millimeter wave frequency band pre-selection filtering unit
301 third path switching unit
4 Sub6 power level adjustment unit
5 millimeter wave power level adjusting unit
6 first wideband quadrature demodulator
7 second wideband quadrature demodulator
8 first high-purity frequency synthesis local oscillator module
9 second high-purity frequency synthesis local oscillator module
10 first ultra-high dynamic differential amplifier
11 second ultra-high dynamic differential amplifier
12 first anti-aliasing filter
13 second anti-aliasing filter
14 baseband processing unit
Detailed Description
In order to more clearly describe the technical contents of the present invention, the following further description is given in conjunction with specific embodiments.
The invention relates to an ultra-wideband signal analysis and processing system supporting a 5G millimeter wave frequency band, which comprises:
the first path switching unit is used for dividing the ultra-wideband input signal into a Sub6 frequency band and a millimeter wave frequency band, and respectively entering different paths of the Sub6 frequency band pre-selection filtering unit and the millimeter wave frequency band pre-selection filtering unit for processing;
the Sub6 frequency band preselection filtering unit is connected with the first path switching unit and is used for carrying out-of-band suppression on Sub6 frequency band broadband signals;
the Sub6 power level adjusting unit is connected with the Sub6 frequency band preselection filtering unit and is used for carrying out level amplification and attenuation on the filtered low-frequency broadband signal;
the first broadband quadrature demodulator is connected with the Sub6 power level adjusting unit and is used for mixing the low-frequency broadband signal with the low-frequency local oscillation signal to realize zero intermediate frequency output of the low-frequency broadband signal;
the first high-purity frequency synthesis local oscillator module is connected with the first broadband orthogonal demodulator and is used for providing a low-frequency broadband local oscillator signal for frequency mixing of the first broadband orthogonal demodulator;
the first ultrahigh dynamic differential amplifier is connected with the first high-purity frequency synthesis local oscillator module and is used for performing gain amplification on the low-frequency broadband zero intermediate-frequency signal after frequency mixing;
the first anti-aliasing filter is connected with the first ultrahigh dynamic differential amplifier and is used for low-pass filtering the amplified signal and eliminating out-of-band interference;
the millimeter wave frequency band pre-selection filtering unit is connected with the first access switching unit and is used for carrying out-of-band suppression on the millimeter wave frequency band broadband signal;
the millimeter wave power level adjusting unit is connected with the millimeter wave frequency band preselection filtering unit and is used for carrying out level amplification and attenuation on the millimeter wave broadband signal after filtering;
the second broadband orthogonal demodulator is connected with the millimeter wave power level adjusting unit and is used for mixing the millimeter wave broadband signal with the millimeter wave local oscillator signal to realize zero intermediate frequency output of the millimeter wave broadband signal;
the second high-purity frequency synthesis local oscillator module is connected with the second broadband orthogonal demodulator and is used for providing millimeter wave broadband local oscillator signals for frequency mixing of the second broadband orthogonal demodulator;
the second ultrahigh dynamic differential amplifier is connected with the second high-purity frequency synthesis local oscillator module and is used for performing gain amplification on the millimeter wave broadband zero intermediate frequency signal after frequency mixing;
the second anti-aliasing filter is connected with the second ultrahigh dynamic differential amplifier and is used for low-pass filtering the amplified signal and eliminating out-of-band interference;
and the baseband processing unit is connected with the first anti-aliasing filter and the second anti-aliasing filter and is used for analyzing and processing the filtered broadband data.
As a preferred embodiment of the present invention, the Sub6 frequency band pre-selection filtering unit includes:
the input end of the first broadband matching circuit is connected with the first path switching unit and is used for performing impedance matching on a Sub6 frequency band broadband input signal and inhibiting out-of-band self-excitation;
the first band-pass filter unit comprises a plurality of different Sub6 frequency range and is used for carrying out-of-band suppression on Sub6 frequency band broadband signal segmented filtering;
the output end of the second broadband matching circuit is connected with the Sub6 power level adjusting unit and is used for carrying out impedance matching on the filtered low-frequency broadband signal and inhibiting out-of-band self-excitation;
and the second path switching unit is respectively connected with the first broadband matching circuit and the first band-pass filter unit, and the first band-pass filter unit and the second broadband matching circuit and is used for sectionally switching the broadband signal of the Sub6 frequency band.
As a preferred embodiment of the present invention, the Sub6 power level adjustment unit includes:
the first broadband adjustable attenuation module is connected with the Sub6 frequency band preselection filtering unit and is used for carrying out power level adjustable attenuation on the input low-frequency broadband signal;
the first broadband amplifying unit is connected with the first broadband adjustable attenuation module and used for amplifying the power level of the attenuated signal;
the second broadband adjustable attenuation module is connected with the first broadband amplification unit and is used for carrying out power level adjustable attenuation on the amplified low-frequency broadband signal;
and the second broadband amplifying unit is connected with the second broadband adjustable attenuation module and used for amplifying the power level of the attenuated signal again and meeting the requirement of the power level of the access by combination.
As a preferred embodiment of the present invention, the millimeter wave band pre-selection filtering unit includes:
the input end of the third broadband matching circuit is connected with the first path switching unit and is used for performing impedance matching on the millimeter wave frequency band broadband input signal and inhibiting out-of-band self-excitation;
the second band-pass filter unit comprises a plurality of different millimeter wave frequency range ranges and is used for carrying out-of-band suppression on the millimeter wave frequency range broadband signal segmented filtering;
the output end of the fourth broadband matching circuit is connected with the millimeter wave power level adjusting unit and is used for performing impedance matching on the filtered millimeter wave broadband signal and inhibiting out-of-band self-excitation;
and the third path switching unit is respectively connected with the third broadband matching circuit and the second bandpass filter unit, and the second bandpass filter unit and the fourth broadband matching circuit and is used for carrying out sectional switching on the millimeter wave frequency band broadband signals.
As a preferred embodiment of the present invention, the millimeter wave power level adjustment unit includes:
the third broadband adjustable attenuation module is connected with the millimeter wave frequency band preselection filtering unit and is used for carrying out power level adjustable attenuation on the input millimeter wave broadband signal;
the third broadband amplifying unit is connected with the third broadband adjustable attenuation module and used for amplifying the power level of the attenuated signal;
the fourth broadband adjustable attenuation module is connected with the third broadband amplifying unit and is used for carrying out power level adjustable attenuation on the amplified millimeter wave broadband signals;
and the fourth broadband amplifying unit is connected with the fourth broadband adjustable attenuation module and used for amplifying the power level of the attenuated signal again and meeting the requirement of the power level of the access by combination.
As a preferred embodiment of the present invention, the baseband processing unit includes:
the high-speed ADC module is respectively connected with the first anti-aliasing filter and the second anti-aliasing filter and is used for carrying out analog-to-digital conversion on the broadband data filtered by the anti-aliasing filter;
and the data acquisition processing module is connected with the high-speed ADC module and is used for carrying out high-speed data processing on the converted digital signal to realize ultra-wideband signal analysis.
In a specific embodiment of the invention, an ultra-wideband signal analysis device meeting the requirements of 400 MHz-54.0 GHz full-band continuous coverage and analysis bandwidth of 1GHz and suitable for 5G communication test is provided, and for the requirement of 5G ultra-wideband communication signal test, the ultra-wideband signal analysis of a 5G millimeter wave band is supported by utilizing pre-selection filtering, power level adjustment, wideband orthogonal demodulation, high dynamic differential amplification, anti-aliasing filtering and baseband data acquisition processing.
As shown in fig. 1, an ultra-wideband signal analysis device supporting a 5G millimeter wave band includes a first path switching unit 1, a Sub6 frequency band preselection filtering unit 2, a millimeter wave frequency band preselection filtering unit 3, a Sub6 power level adjusting unit 4, a millimeter wave power level adjusting unit 5, a first broadband quadrature demodulator 6, a second broadband quadrature demodulator 7, a first high-purity frequency synthesis local oscillator module 8, a second high-purity frequency synthesis local oscillator module 9, a first ultrahigh dynamic differential amplifier 10, a second ultrahigh dynamic differential amplifier 11, a first anti-aliasing filter 12, a second anti-aliasing filter 13, and a baseband processing unit 14, which are connected in sequence.
The first path switching unit 1 is configured to divide an ultra-wideband input signal into a Sub6 frequency band and a millimeter wave frequency band, and respectively enter different paths for processing, so as to meet requirements of path gain and isolation.
The Sub6 frequency band preselection filtering unit 2 comprises a first broadband matching circuit, a second path switching unit, a first band-pass filter unit and a second broadband matching circuit, wherein the first broadband matching circuit, the second path switching unit, the first band-pass filter unit and the second broadband matching circuit are sequentially connected, the first broadband matching circuit is used for carrying out impedance matching and restraining out-of-band self-excitation on Sub6 frequency band broadband input signals, the second path switching unit is used for carrying out subsection switching on Sub6 frequency band broadband signals, the first band-pass filter unit is used for carrying out-of-band restraining on Sub6 frequency band broadband signal subsection filtering, and the second broadband matching circuit is used for carrying out impedance matching and restraining out-of-band self-excitation on filtered low-frequency broadband signals.
Millimeter wave frequency channel preliminary election filtering unit 3, including third broadband matching circuit, third circuit switching unit, second band-pass filter unit and fourth broadband matching circuit, third circuit switching unit, second band-pass filter unit and fourth broadband matching circuit link to each other in proper order, third broadband matching circuit be used for carrying out impedance matching and restrain the outband autoexcitation to millimeter wave frequency channel broadband input signal, third circuit switching unit be used for carrying out the segmentation switch to millimeter wave frequency channel broadband signal, second band-pass filter unit be used for carrying out the outband suppression to millimeter wave frequency channel broadband signal segmentation filtering, fourth broadband matching circuit be used for carrying out impedance matching and restrain the outband autoexcitation to millimeter wave frequency channel broadband signal after the filtering.
Sub6 power level adjusting unit 4, including first broadband adjustable attenuation module, first broadband amplification unit, second broadband adjustable attenuation module and second broadband amplification unit, first broadband adjustable attenuation module, first broadband amplification unit, second broadband adjustable attenuation module and second broadband amplification unit link to each other in proper order, first broadband adjustable attenuation be used for carrying out power level adjustable attenuation to the low frequency broadband signal of input, first broadband amplification unit be used for carrying out power level amplification to the signal after the attenuation, second broadband adjustable attenuation be used for carrying out power level adjustable attenuation to the low frequency broadband signal after the amplification, second broadband amplification unit be used for carrying out power level amplification again to the signal after the attenuation, satisfy the requirement of passageway power level through the combination.
The millimeter wave power level adjusting unit 5 comprises a third broadband adjustable attenuation module, a third broadband amplifying unit, a fourth broadband adjustable attenuation module and a fourth broadband amplifying unit, wherein the third broadband adjustable attenuation module, the third broadband amplifying unit, the fourth broadband adjustable attenuation module and the fourth broadband amplifying unit are sequentially connected, the third broadband adjustable attenuation module is used for performing power level adjustable attenuation on an input millimeter wave broadband signal, the third broadband amplifying unit is used for performing power level amplification on an attenuated signal, the fourth broadband adjustable attenuation module is used for performing power level adjustable attenuation on the amplified millimeter wave broadband signal, and the fourth broadband amplifying unit is used for performing power level amplification on the attenuated signal again to meet the requirement of the power level of a passage through combination.
And the first broadband quadrature demodulator 6 is configured to mix the low-frequency broadband signal with the low-frequency local oscillation signal to realize zero intermediate frequency output of the low-frequency broadband signal.
And the second broadband orthogonal demodulator 7 is configured to mix the millimeter wave broadband signal with the millimeter wave local oscillator signal to realize zero intermediate frequency output of the millimeter wave broadband signal.
A first high-purity frequency synthesis local oscillator module 8 configured to provide a high-index low-frequency wideband local oscillator signal to the first wideband quadrature demodulator mixing.
And a second high-purity frequency synthesis local oscillator module 9 configured to provide a high-index millimeter wave broadband local oscillator signal to the second broadband quadrature demodulator.
The first ultra-high dynamic differential amplifier 10 is configured to gain amplify the mixed low-frequency broadband zero intermediate frequency signal to meet the requirement of the channel power level.
And the second ultrahigh dynamic differential amplifier 11 is configured to gain-amplify the millimeter-wave broadband zero intermediate-frequency signal after frequency mixing, so as to meet the requirement of the power level of the channel.
A first anti-aliasing filter 12 configured to low-pass filter the amplified low-frequency wideband zero intermediate frequency signal to eliminate out-of-band interference.
And the second anti-aliasing filter 13 is configured to perform low-pass filtering on the amplified millimeter wave broadband zero intermediate frequency signal to eliminate out-of-band interference.
The baseband processing unit 14 includes a high-speed ADC and a data acquisition and processing module, the high-speed ADC and the data acquisition and processing module are sequentially connected, the high-speed ADC is configured to perform analog-to-digital conversion on the wideband data filtered by the anti-aliasing filter, and the data acquisition and processing module is configured to perform high-speed data processing on the converted digital signal to realize analysis of the ultra wideband signal.
The specific working method of the device is that a first channel switching unit 1 divides an ultra-wideband input signal into a Sub6 frequency band and a millimeter wave frequency band, the signals enter different channels to be processed respectively to meet the channel gain and isolation requirements, a Sub6 frequency band broadband signal after being segmented enters a Sub6 frequency band pre-selection filtering unit 2 and then is firstly subjected to impedance matching and out-of-band self-excitation suppression through a first broadband matching circuit, a matched signal is subjected to segmented switching through a second channel switching unit 201, a segmented broadband signal enters a band-pass filter unit to be filtered in a segmented manner to be subjected to out-of-band self-excitation suppression, a filtered broadband signal enters a second broadband matching circuit to be subjected to impedance matching and out-of-band self-excitation suppression, a matched low-frequency broadband signal enters a Sub6 power level adjusting unit 4 and then is firstly subjected to power level adjustable attenuation through a first broadband adjustable attenuation module, the attenuated low-frequency broadband signal enters a first broadband amplifying unit to be subjected to power level amplification, the amplified low-frequency broadband signal enters a second broadband adjustable attenuation module to carry out power level adjustable attenuation, the attenuated signal enters a second broadband amplification unit to carry out power level amplification again, the combination meets the input level requirement of a first broadband quadrature demodulator, the amplified low-frequency broadband signal enters a first broadband quadrature demodulator 6 to be mixed with a high-index low-frequency broadband local oscillator signal generated by a first high-purity frequency synthesis local oscillator module 8 to realize zero intermediate frequency output of the low-frequency broadband signal, the mixed low-frequency broadband zero intermediate frequency signal enters a first ultrahigh dynamic differential amplifier 10 to realize gain amplification to meet the requirement of the channel power level, the amplified low-frequency broadband zero intermediate frequency signal enters a first anti-aliasing filter 12 to carry out low-pass filtering and eliminate out-of-band interference, the segmented frequency band broadband signal enters a millimeter wave frequency band pre-selection filtering unit 3 to firstly carry out impedance matching and inhibit out-of-band self-excitation through a third broadband matching circuit, the matched signal is switched in a segmented way through a third path switching unit 301, the segmented broadband signal enters a band-pass filter unit for segmented filtering and out-of-band suppression, the filtered broadband signal enters a fourth broadband matching circuit for impedance matching and out-of-band self-excitation suppression, the matched millimeter wave broadband signal enters a millimeter wave power level adjusting unit 5 and then is subjected to power level adjustable attenuation through a third broadband adjustable attenuation module, the attenuated millimeter wave broadband signal enters a third broadband amplifying unit for power level amplification, the amplified millimeter wave broadband signal enters a fourth broadband adjustable attenuation module for power level adjustable attenuation, the attenuated signal enters a fourth broadband amplifying unit for power level amplification again, the requirement of the input level of a second broadband orthogonal demodulator is met through combination, the amplified millimeter wave broadband signal enters the second broadband orthogonal demodulator 7 and a high-finger local oscillator module 9 for high-purity frequency synthesis, and the high-finger local oscillator module generates high-frequency synthesis The millimeter wave broadband local oscillation signals are subjected to frequency mixing to achieve zero intermediate frequency output of millimeter wave broadband signals, the millimeter wave broadband zero intermediate frequency signals after frequency mixing enter a second ultrahigh dynamic differential amplifier 11 to achieve gain amplification, the requirement of the power level of a channel is met, the millimeter wave broadband zero intermediate frequency signals after amplification enter a second anti-aliasing filter 13 to perform low-pass filtering, out-of-band interference is eliminated, the low-frequency broadband zero intermediate frequency signals and the millimeter wave broadband zero intermediate frequency signals after filtering enter a baseband processing unit 14 to perform AD conversion and data acquisition processing, analysis of millimeter wave frequency band 1GHz ultra-wide band signals is achieved, and the requirement of 5G communication technology testing is met.
The system for analyzing and processing the ultra-wideband signal supporting the 5G millimeter wave frequency band meets the requirements of 400 MHz-54.0 GHz full-band continuous coverage and 1GHz analysis bandwidth, is suitable for 5G communication test, can realize the analysis of the ultra-wideband signal of the millimeter wave frequency band 1GHz, and meets the test requirements of the 5G communication technology.
In this specification, the invention has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (6)
1. An ultra-wideband signal analyzing and processing system supporting 5G millimeter wave frequency band, characterized in that, the system includes:
the first path switching unit is used for dividing the ultra-wideband input signal into a Sub6 frequency band and a millimeter wave frequency band, and respectively entering different paths of the Sub6 frequency band pre-selection filtering unit and the millimeter wave frequency band pre-selection filtering unit for processing;
the Sub6 frequency band preselection filtering unit is connected with the first path switching unit and is used for carrying out-of-band suppression on Sub6 frequency band broadband signals;
the Sub6 power level adjusting unit is connected with the Sub6 frequency band preselection filtering unit and is used for carrying out level amplification and attenuation on the filtered low-frequency broadband signal;
the first broadband quadrature demodulator is connected with the Sub6 power level adjusting unit and is used for mixing the low-frequency broadband signal with the low-frequency local oscillation signal to realize zero intermediate frequency output of the low-frequency broadband signal;
the first high-purity frequency synthesis local oscillator module is connected with the first broadband orthogonal demodulator and is used for providing a low-frequency broadband local oscillator signal for frequency mixing of the first broadband orthogonal demodulator;
the first ultrahigh dynamic differential amplifier is connected with the first high-purity frequency synthesis local oscillator module and is used for performing gain amplification on the low-frequency broadband zero intermediate-frequency signal after frequency mixing;
the first anti-aliasing filter is connected with the first ultrahigh dynamic differential amplifier and is used for low-pass filtering the amplified signal and eliminating out-of-band interference;
the millimeter wave frequency band pre-selection filtering unit is connected with the first access switching unit and is used for carrying out-of-band suppression on the millimeter wave frequency band broadband signal;
the millimeter wave power level adjusting unit is connected with the millimeter wave frequency band preselection filtering unit and is used for carrying out level amplification and attenuation on the millimeter wave broadband signal after filtering;
the second broadband orthogonal demodulator is connected with the millimeter wave power level adjusting unit and is used for mixing the millimeter wave broadband signal with the millimeter wave local oscillator signal to realize zero intermediate frequency output of the millimeter wave broadband signal;
the second high-purity frequency synthesis local oscillator module is connected with the second broadband orthogonal demodulator and is used for providing millimeter wave broadband local oscillator signals for frequency mixing of the second broadband orthogonal demodulator;
the second ultrahigh dynamic differential amplifier is connected with the second high-purity frequency synthesis local oscillator module and is used for performing gain amplification on the millimeter wave broadband zero intermediate frequency signal after frequency mixing;
the second anti-aliasing filter is connected with the second ultrahigh dynamic differential amplifier and is used for low-pass filtering the amplified signal and eliminating out-of-band interference;
and the baseband processing unit is connected with the first anti-aliasing filter and the second anti-aliasing filter and is used for analyzing and processing the filtered broadband data.
2. The system for analyzing and processing the ultra-wideband signal supporting the 5G millimeter wave band according to claim 1, wherein the Sub6 band pre-selection filtering unit comprises:
the input end of the first broadband matching circuit is connected with the first path switching unit and is used for performing impedance matching on a Sub6 frequency band broadband input signal and inhibiting out-of-band self-excitation;
the first band-pass filter unit comprises a plurality of different Sub6 frequency range and is used for carrying out-of-band suppression on Sub6 frequency band broadband signal segmented filtering;
the output end of the second broadband matching circuit is connected with the Sub6 power level adjusting unit and is used for carrying out impedance matching on the filtered low-frequency broadband signal and inhibiting out-of-band self-excitation;
and the second path switching unit is respectively connected with the first broadband matching circuit and the first band-pass filter unit, and the first band-pass filter unit and the second broadband matching circuit and is used for sectionally switching the broadband signal of the Sub6 frequency band.
3. The system for analyzing and processing the ultra-wideband signal supporting the 5G millimeter wave frequency band according to claim 1, wherein the Sub6 power level adjusting unit comprises:
the first broadband adjustable attenuation module is connected with the Sub6 frequency band preselection filtering unit and is used for carrying out power level adjustable attenuation on the input low-frequency broadband signal;
the first broadband amplifying unit is connected with the first broadband adjustable attenuation module and used for amplifying the power level of the attenuated signal;
the second broadband adjustable attenuation module is connected with the first broadband amplification unit and is used for carrying out power level adjustable attenuation on the amplified low-frequency broadband signal;
and the second broadband amplifying unit is connected with the second broadband adjustable attenuation module and used for amplifying the power level of the attenuated signal again and meeting the requirement of the power level of the access by combination.
4. The system for analyzing and processing the ultra-wideband signal supporting the 5G millimeter wave band according to claim 1, wherein the millimeter wave band pre-selection filtering unit comprises:
the input end of the third broadband matching circuit is connected with the first path switching unit and is used for performing impedance matching on the millimeter wave frequency band broadband input signal and inhibiting out-of-band self-excitation;
the second band-pass filter unit comprises a plurality of different millimeter wave frequency range ranges and is used for carrying out-of-band suppression on the millimeter wave frequency range broadband signal segmented filtering;
the output end of the fourth broadband matching circuit is connected with the millimeter wave power level adjusting unit and is used for performing impedance matching on the filtered millimeter wave broadband signal and inhibiting out-of-band self-excitation;
and the third path switching unit is respectively connected with the third broadband matching circuit and the second bandpass filter unit, and the second bandpass filter unit and the fourth broadband matching circuit and is used for carrying out sectional switching on the millimeter wave frequency band broadband signals.
5. The system of claim 1, wherein the millimeter wave power level adjustment unit comprises:
the third broadband adjustable attenuation module is connected with the millimeter wave frequency band preselection filtering unit and is used for carrying out power level adjustable attenuation on the input millimeter wave broadband signal;
the third broadband amplifying unit is connected with the third broadband adjustable attenuation module and used for amplifying the power level of the attenuated signal;
the fourth broadband adjustable attenuation module is connected with the third broadband amplifying unit and is used for carrying out power level adjustable attenuation on the amplified millimeter wave broadband signals;
and the fourth broadband amplifying unit is connected with the fourth broadband adjustable attenuation module and used for amplifying the power level of the attenuated signal again and meeting the requirement of the power level of the access by combination.
6. The system of claim 1, wherein the baseband processing unit comprises:
the high-speed ADC module is respectively connected with the first anti-aliasing filter and the second anti-aliasing filter and is used for carrying out analog-to-digital conversion on the broadband data filtered by the anti-aliasing filter;
and the data acquisition processing module is connected with the high-speed ADC module and is used for carrying out high-speed data processing on the converted digital signal to realize ultra-wideband signal analysis.
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