CN113992556B - Ultra-wideband signal analysis processing system supporting 5G millimeter wave frequency band - Google Patents
Ultra-wideband signal analysis processing system supporting 5G millimeter wave frequency band Download PDFInfo
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- CN113992556B CN113992556B CN202111404578.XA CN202111404578A CN113992556B CN 113992556 B CN113992556 B CN 113992556B CN 202111404578 A CN202111404578 A CN 202111404578A CN 113992556 B CN113992556 B CN 113992556B
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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 channel switching unit, a second channel switching unit and a third channel switching unit, wherein the first channel switching unit divides signals into a Sub6 frequency band and a millimeter wave frequency band to enter different channels for processing; the Sub6 frequency band pre-selection filtering unit performs out-of-band suppression; the Sub6 power level adjusting unit performs level amplification and attenuation; the first broadband orthogonal 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 ultra-high dynamic differential amplifier performs gain amplification; the first anti-aliasing filter performs low-pass filtering; a millimeter wave frequency band preselection filtering unit; millimeter wave power level adjustment list; a second wideband quadrature demodulator; the second high-purity frequency synthesis local oscillation module; a second ultra-high dynamic differential amplifier; the baseband processing unit performs analysis processing. By adopting the ultra-wideband signal analysis processing system supporting the 5G millimeter wave frequency band, the analysis of the ultra-wideband signal 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, the 5G frequency band is divided into FR1 (450 MHz-6 GHz) and FR2 (24.25 GHz-52.6 GHz), and the bandwidth of the 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 is a technical difficulty in the field of wireless communication. The traditional broadband signal analysis device only supports below 6GHz, even if the millimeter wave frequency band is supported, the analysis bandwidth is difficult to reach 400MHz, and the traditional device cannot realize 400 MHz-54.0 GHz full-frequency band continuous coverage, so that the prior art 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 provides an ultra-wideband signal analysis 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 frequency band.
In order to achieve the above object, the ultra-wideband signal analysis processing system supporting the 5G millimeter wave frequency band of the present invention is as follows:
the ultra-wideband signal analysis processing system supporting the 5G millimeter wave frequency band is mainly characterized by comprising the following components:
the first passage switching unit is used for dividing an ultra-wideband input signal into a Sub6 frequency band and a millimeter wave frequency band, and respectively entering different passages of the Sub6 frequency band preselection filtering unit and the millimeter wave frequency band preselection filtering unit for processing;
the Sub6 frequency band pre-selection filtering unit is connected with the first channel switching unit and is used for carrying out-of-band suppression on the Sub6 frequency band broadband signal;
the Sub6 power level adjusting unit is connected with the Sub6 frequency band pre-selection filtering unit and is used for carrying out level amplification and attenuation on the filtered low-frequency broadband signal;
the first broadband orthogonal 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 oscillation module is connected with the first broadband orthogonal demodulator and is used for providing a low-frequency broadband local oscillation signal for the frequency mixing of the first broadband orthogonal demodulator;
the first ultra-high dynamic differential amplifier is connected with the first high-purity frequency synthesis local oscillation module and is used for carrying out gain amplification on the mixed low-frequency broadband zero intermediate frequency signal;
the first anti-aliasing filter is connected with the first ultra-high dynamic differential amplifier and is used for carrying out low-pass filtering on the amplified signals to eliminate out-of-band interference;
the millimeter wave frequency band pre-selection filtering unit is connected with the first channel 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 filtered millimeter wave broadband signal;
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 oscillation signal to realize zero intermediate frequency output of the millimeter wave broadband signal;
the second high-purity frequency synthesis local oscillation module is connected with the second broadband orthogonal demodulator and is used for providing millimeter wave broadband local oscillation signals for the frequency mixing of the second broadband orthogonal demodulator;
the second ultra-high dynamic differential amplifier is connected with the second high-purity frequency synthesis local oscillation module and is used for carrying out gain amplification on the millimeter wave broadband zero intermediate frequency signal after mixing;
the second anti-aliasing filter is connected with the second ultra-high dynamic differential amplifier and is used for carrying out low-pass filtering on the amplified signals and eliminating out-of-band interference;
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 band pre-selection filtering unit includes:
the input end of the first broadband matching circuit is connected with the first channel switching unit and is used for carrying out impedance matching on the 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 band ranges and is used for carrying out-of-band suppression on Sub6 frequency band broadband signal segmentation 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 second broadband matching circuit and is used for carrying out sectional switching on the Sub6 frequency band broadband signals.
Preferably, the Sub6 power level adjustment unit includes:
the first broadband adjustable attenuation module is connected with the Sub6 frequency band pre-selection filtering unit and is used for carrying out power level adjustable attenuation on the input low-frequency broadband signals;
the first broadband amplifying unit is connected with the first broadband adjustable attenuation module and is used for amplifying the power level of the attenuated signal;
the second broadband adjustable attenuation module is connected with the first broadband amplifying 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 is used for amplifying the power level of the attenuated signal again and meeting the requirement of the power level of the passage through combination.
Preferably, the millimeter wave frequency band preselection filtering unit includes:
the input end of the third broadband matching circuit is connected with the first channel switching unit and is used for carrying out impedance matching on millimeter wave frequency band broadband input signals and inhibiting out-of-band self excitation;
the second band-pass filter unit comprises a plurality of different millimeter wave frequency band ranges and is used for carrying out-of-band suppression on millimeter wave frequency band broadband signal segmentation filtering;
the output end of the fourth broadband matching circuit is connected with the millimeter wave power level adjusting unit and is used for carrying out impedance matching on the millimeter wave broadband signals after filtering and inhibiting out-of-band self-excitation;
and the third channel switching unit is respectively connected with the third broadband matching circuit and the second band-pass filter unit, and the second band-pass filter unit and the fourth broadband matching circuit and is used for carrying out sectional switching on 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 pre-selection filtering unit and is used for carrying out power level adjustable attenuation on the input millimeter wave broadband signals;
the third broadband amplifying unit is connected with the third broadband adjustable attenuation module and is 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 is used for amplifying the power level of the attenuated signal again and meeting the requirement of the power level of the passage through 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 filters;
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 signals so as to realize ultra-wideband signal analysis.
The ultra-wideband signal analysis processing system supporting the 5G millimeter wave frequency band, which is disclosed by the invention, meets the requirements of 400 MHz-54.0 GHz full-band continuous coverage and analysis of 1GHz bandwidth, is suitable for 5G communication test, can realize millimeter wave frequency band 1GHz ultra-wideband signal analysis, and meets the test requirements of 5G communication technology.
Drawings
Fig. 1 is a circuit configuration diagram of an ultra-wideband signal analysis processing system supporting a 5G millimeter wave band according to the present invention.
Fig. 2 is a schematic diagram of demodulation results of an input millimeter wave ultra wideband communication signal according to an embodiment of the ultra wideband signal analysis processing system supporting the 5G millimeter wave band of the present invention.
Reference numerals:
1. first path switching unit
2 Sub6 frequency band preselection filtering unit
201. Second path switching unit
3. Millimeter wave frequency band preselection filtering unit
301. Third channel switching unit
4 Sub6 power level adjustment unit
5. Millimeter wave power level adjusting unit
6. First wideband quadrature demodulator
7. Second broadband quadrature demodulator
8. First high-purity frequency synthesis local oscillation module
9. Second high-purity frequency synthesis local oscillation 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, a further description will be made below in connection with specific embodiments.
The ultra-wideband signal analysis processing system supporting the 5G millimeter wave frequency band comprises:
the first passage switching unit is used for dividing an ultra-wideband input signal into a Sub6 frequency band and a millimeter wave frequency band, and respectively entering different passages of the Sub6 frequency band preselection filtering unit and the millimeter wave frequency band preselection filtering unit for processing;
the Sub6 frequency band pre-selection filtering unit is connected with the first channel switching unit and is used for carrying out-of-band suppression on the Sub6 frequency band broadband signal;
the Sub6 power level adjusting unit is connected with the Sub6 frequency band pre-selection filtering unit and is used for carrying out level amplification and attenuation on the filtered low-frequency broadband signal;
the first broadband orthogonal 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 oscillation module is connected with the first broadband orthogonal demodulator and is used for providing a low-frequency broadband local oscillation signal for the frequency mixing of the first broadband orthogonal demodulator;
the first ultra-high dynamic differential amplifier is connected with the first high-purity frequency synthesis local oscillation module and is used for carrying out gain amplification on the mixed low-frequency broadband zero intermediate frequency signal;
the first anti-aliasing filter is connected with the first ultra-high dynamic differential amplifier and is used for carrying out low-pass filtering on the amplified signals to eliminate out-of-band interference;
the millimeter wave frequency band pre-selection filtering unit is connected with the first channel 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 filtered millimeter wave broadband signal;
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 oscillation signal to realize zero intermediate frequency output of the millimeter wave broadband signal;
the second high-purity frequency synthesis local oscillation module is connected with the second broadband orthogonal demodulator and is used for providing millimeter wave broadband local oscillation signals for the frequency mixing of the second broadband orthogonal demodulator;
the second ultra-high dynamic differential amplifier is connected with the second high-purity frequency synthesis local oscillation module and is used for carrying out gain amplification on the millimeter wave broadband zero intermediate frequency signal after mixing;
the second anti-aliasing filter is connected with the second ultra-high dynamic differential amplifier and is used for carrying out low-pass filtering on the amplified signals and eliminating out-of-band interference;
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 band pre-selection filtering unit includes:
the input end of the first broadband matching circuit is connected with the first channel switching unit and is used for carrying out impedance matching on the 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 band ranges and is used for carrying out-of-band suppression on Sub6 frequency band broadband signal segmentation 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 second broadband matching circuit and is used for carrying out sectional switching on the Sub6 frequency band broadband signals.
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 pre-selection filtering unit and is used for carrying out power level adjustable attenuation on the input low-frequency broadband signals;
the first broadband amplifying unit is connected with the first broadband adjustable attenuation module and is used for amplifying the power level of the attenuated signal;
the second broadband adjustable attenuation module is connected with the first broadband amplifying 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 is used for amplifying the power level of the attenuated signal again and meeting the requirement of the power level of the passage through 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 channel switching unit and is used for carrying out impedance matching on millimeter wave frequency band broadband input signals and inhibiting out-of-band self excitation;
the second band-pass filter unit comprises a plurality of different millimeter wave frequency band ranges and is used for carrying out-of-band suppression on millimeter wave frequency band broadband signal segmentation filtering;
the output end of the fourth broadband matching circuit is connected with the millimeter wave power level adjusting unit and is used for carrying out impedance matching on the millimeter wave broadband signals after filtering and inhibiting out-of-band self-excitation;
and the third channel switching unit is respectively connected with the third broadband matching circuit and the second band-pass filter unit, and the second band-pass filter unit and the fourth broadband matching circuit and is used for carrying out sectional switching on millimeter wave frequency band broadband signals.
As a preferred embodiment of the present invention, the millimeter wave power level adjusting unit includes:
the third broadband adjustable attenuation module is connected with the millimeter wave frequency band pre-selection filtering unit and is used for carrying out power level adjustable attenuation on the input millimeter wave broadband signals;
the third broadband amplifying unit is connected with the third broadband adjustable attenuation module and is 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 is used for amplifying the power level of the attenuated signal again and meeting the requirement of the power level of the passage through 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 filters;
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 signals so as to realize ultra-wideband signal analysis.
In the specific implementation mode of the invention, an ultra-wideband signal analysis device which meets the requirements of 400 MHz-54.0 GHz full-band continuous coverage and analysis bandwidth of 1GHz and is suitable for 5G communication test is provided, and the ultra-wideband signal analysis of 5G millimeter wave frequency band is supported by utilizing pre-selection filtering, power level adjustment, broadband orthogonal demodulation, high dynamic differential amplification, anti-aliasing filtering and baseband data acquisition processing aiming at the 5G ultra-wideband communication signal test requirement.
As shown in fig. 1, an ultra-wideband signal analysis device supporting the 5G millimeter wave band comprises a first channel switching unit 1, a Sub6 band preselection filtering unit 2, a millimeter wave band preselection filtering unit 3, a Sub6 power level adjusting unit 4, a millimeter wave power level adjusting unit 5, a first wideband orthogonal demodulator 6, a second wideband orthogonal demodulator 7, a first high-purity frequency synthesis local oscillator module 8, a second high-purity frequency synthesis local oscillator module 9, a first ultra-high dynamic differential amplifier 10, a second ultra-high dynamic differential amplifier 11, a first anti-aliasing filter 12, a second anti-aliasing filter 13 and a baseband processing unit 14, wherein the modules are sequentially connected.
The first channel switching unit 1 is configured to divide an ultra-wideband input signal into a Sub6 frequency band and a millimeter wave frequency band, and enter different channels for processing respectively, so as to meet the channel gain and isolation requirements.
The Sub6 frequency band pre-selection 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 on a Sub6 frequency band broadband input signal and inhibiting out-of-band self excitation, the second path switching unit is used for carrying out sectional switching on the Sub6 frequency band broadband signal, the first band-pass filter unit is used for carrying out-of-band inhibition on the Sub6 frequency band broadband signal, and the second broadband matching circuit is used for carrying out impedance matching on the filtered low-frequency broadband signal and inhibiting out-of-band self excitation.
The millimeter wave frequency band pre-selection filtering unit 3 comprises a third broadband matching circuit, a third channel switching unit, a second band-pass filter unit and a fourth broadband matching circuit, wherein the third broadband matching circuit, the third channel switching unit, the second band-pass filter unit and the fourth broadband matching circuit are sequentially connected, the third broadband matching circuit is used for carrying out impedance matching on millimeter wave frequency band broadband input signals and inhibiting out-of-band self excitation, the third channel switching unit is used for carrying out segment switching on millimeter wave frequency band broadband signals, the second band-pass filter unit is used for carrying out-of-band inhibition on millimeter wave frequency band broadband signals, and the fourth band-pass matching circuit is used for carrying out impedance matching on the filtered millimeter wave frequency band broadband signals and inhibiting out-of-band self excitation.
The Sub6 power level adjusting unit 4 comprises a first broadband adjustable attenuation module, a first broadband amplifying unit, a second broadband adjustable attenuation module and a second broadband amplifying unit, wherein the first broadband adjustable attenuation module, the first broadband amplifying unit, the second broadband adjustable attenuation module and the second broadband amplifying unit are sequentially connected, the first broadband adjustable attenuation is used for carrying out power level adjustable attenuation on an input low-frequency broadband signal, the first broadband amplifying unit is used for carrying out power level amplification on an attenuated signal, the second broadband adjustable attenuation is used for carrying out power level adjustable attenuation on an amplified low-frequency broadband signal, the second broadband amplifying unit is used for carrying out power level amplification on the attenuated signal again, and the path power level requirement is met through 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 is used for carrying out power level adjustable attenuation on an input millimeter wave broadband signal, the third broadband amplifying unit is used for carrying out power level amplification on an attenuated signal, the fourth broadband adjustable attenuation is used for carrying out power level adjustable attenuation on an amplified millimeter wave broadband signal, the fourth broadband amplifying unit is used for carrying out power level amplification on the attenuated signal again, and the path power level requirement is met through combination.
The first wideband orthogonal demodulator 6 is configured to mix the low-frequency wideband signal with the low-frequency local oscillation signal, so as to realize zero intermediate frequency output of the low-frequency wideband signal.
And the second broadband orthogonal demodulator 7 is configured to mix the millimeter wave broadband signal with the millimeter wave local oscillation signal to realize zero intermediate frequency output of the millimeter wave broadband signal.
The first high purity frequency synthesis local oscillator module 8 is configured to provide a high index low frequency wideband local oscillator signal for the first wideband quadrature demodulator mixing.
A second high purity frequency synthesis local oscillator module 9 configured to provide a high index millimeter wave wideband local oscillator signal to the second wideband quadrature demodulator mixer.
The first ultra-high dynamic differential amplifier 10 is configured to gain amplify the mixed low-frequency broadband zero intermediate frequency signal, and meets the requirement of the channel power level.
The second ultra-high dynamic differential amplifier 11 is configured to amplify the gain of the millimeter wave broadband zero intermediate frequency signal after mixing, and meets the requirement of the channel power level.
The first anti-aliasing filter 12 is configured to perform low-pass filtering on 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 comprises a high-speed ADC and a data acquisition processing module, the high-speed ADC and the data acquisition processing module are sequentially connected, the high-speed ADC is used for performing analog-to-digital conversion on the broadband data filtered by the anti-aliasing filter, and the data acquisition processing module is used for performing high-speed data processing on the converted digital signal to realize ultra-wideband signal analysis.
The specific working method of the device is that the first channel switching unit 1 divides the ultra-wideband input signal into a Sub6 frequency band and a millimeter wave frequency band, respectively enters different channels for processing, meets the channel gain and isolation requirements, the segmented Sub6 frequency band wideband signal enters the Sub6 frequency band preselection filtering unit 2, then is subjected to impedance matching and out-of-band self-excitation inhibition through the first wideband matching circuit, the matched signal is subjected to segmented switching through the second channel switching unit 201, the segmented wideband signal enters the band-pass filter unit for segmented filtering to perform out-of-band inhibition, the filtered wideband signal enters the second wideband matching circuit for impedance matching and out-of-band self-excitation inhibition, the matched low-frequency wideband signal enters the Sub6 power level adjusting unit 4 and then is subjected to power level adjustable attenuation through the first wideband adjustable attenuation module, the attenuated low-frequency broadband signal enters a first broadband amplifying unit to amplify the power level, the amplified low-frequency broadband signal enters a second broadband adjustable attenuating module to attenuate the power level, the attenuated signal enters the second broadband amplifying unit to amplify the power level again, the amplified low-frequency broadband signal enters a first broadband orthogonal demodulator 6 to mix 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 to eliminate out-of-band interference, the segmented millimeter wave band broadband signal enters the millimeter wave band pre-selection filtering unit 3 and then is subjected to impedance matching and out-of-band self-excitation inhibition through a third broadband matching circuit, the matched signal is subjected to segmented switching through a third channel switching unit 301, the segmented broadband signal enters a band-pass filter unit and is subjected to segmented filtering to carry out-of-band inhibition, the filtered broadband signal enters a fourth broadband matching circuit to carry out impedance matching and out-of-band self-excitation inhibition, 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 to carry out power level amplification, the amplified millimeter wave broadband signal enters a fourth broadband adjustable attenuation module to carry out power level adjustable attenuation, the attenuated signals enter a fourth broadband amplifying unit to amplify the power level again, the input level requirement of a second broadband orthogonal demodulator is met through combination, the amplified millimeter wave broadband signals enter a second broadband orthogonal demodulator 7 to be mixed with a high-index millimeter wave broadband local oscillation signal generated by a second high-purity frequency synthesis local oscillation module 9 to realize zero intermediate frequency output of the millimeter wave broadband signals, the mixed millimeter wave broadband zero intermediate frequency signals enter a second ultra-high dynamic differential amplifier 11 to realize gain amplification, the requirement of the power level of a passage is met, the amplified millimeter wave broadband zero intermediate frequency signals enter a second anti-aliasing filter 13 to be subjected to low-pass filtering, out-of-band interference is eliminated, the filtered low-frequency broadband zero intermediate frequency signals and millimeter wave broadband zero intermediate frequency signals enter a baseband processing unit 14 to be subjected to AD conversion and data acquisition processing to realize the analysis of the millimeter wave frequency band 1GHz ultra-broadband signals, meets the test requirement of the 5G communication technology.
The ultra-wideband signal analysis processing system supporting the 5G millimeter wave frequency band, which is disclosed by the invention, meets the requirements of 400 MHz-54.0 GHz full-band continuous coverage and analysis of 1GHz bandwidth, is suitable for 5G communication test, can realize millimeter wave frequency band 1GHz ultra-wideband signal analysis, and meets the test requirements of 5G communication technology.
In this specification, the invention has been described with reference to specific embodiments thereof. It will be apparent, however, that various modifications and changes may be made without departing from the 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 analysis processing system supporting 5G millimeter wave frequency band, comprising:
the first passage switching unit is used for dividing an ultra-wideband input signal into a Sub6 frequency band and a millimeter wave frequency band, and respectively entering different passages of the Sub6 frequency band preselection filtering unit and the millimeter wave frequency band preselection filtering unit for processing;
the Sub6 frequency band pre-selection filtering unit is connected with the first channel switching unit and is used for carrying out-of-band suppression on the Sub6 frequency band broadband signal;
the Sub6 power level adjusting unit is connected with the Sub6 frequency band pre-selection filtering unit and is used for carrying out level amplification and attenuation on the filtered low-frequency broadband signal;
the first broadband orthogonal 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 oscillation module is connected with the first broadband orthogonal demodulator and is used for providing a low-frequency broadband local oscillation signal for the frequency mixing of the first broadband orthogonal demodulator;
the first ultra-high dynamic differential amplifier is connected with the first high-purity frequency synthesis local oscillation module and is used for carrying out gain amplification on the mixed low-frequency broadband zero intermediate frequency signal;
the first anti-aliasing filter is connected with the first ultra-high dynamic differential amplifier and is used for carrying out low-pass filtering on the amplified signals to eliminate out-of-band interference;
the millimeter wave frequency band pre-selection filtering unit is connected with the first channel 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 filtered millimeter wave broadband signal;
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 oscillation signal to realize zero intermediate frequency output of the millimeter wave broadband signal;
the second high-purity frequency synthesis local oscillation module is connected with the second broadband orthogonal demodulator and is used for providing millimeter wave broadband local oscillation signals for the frequency mixing of the second broadband orthogonal demodulator;
the second ultra-high dynamic differential amplifier is connected with the second high-purity frequency synthesis local oscillation module and is used for carrying out gain amplification on the millimeter wave broadband zero intermediate frequency signal after mixing;
the second anti-aliasing filter is connected with the second ultra-high dynamic differential amplifier and is used for carrying out low-pass filtering on the amplified signals and eliminating out-of-band interference;
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 ultra-wideband signal analysis processing system supporting 5G millimeter wave band according to claim 1, wherein said Sub6 band pre-selection filtering unit comprises:
the input end of the first broadband matching circuit is connected with the first channel switching unit and is used for carrying out impedance matching on the 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 band ranges and is used for carrying out-of-band suppression on Sub6 frequency band broadband signal segmentation 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 second broadband matching circuit and is used for carrying out sectional switching on the Sub6 frequency band broadband signals.
3. The ultra-wideband signal analysis processing system supporting 5G millimeter wave band according to claim 1, wherein said Sub6 power level adjustment unit comprises:
the first broadband adjustable attenuation module is connected with the Sub6 frequency band pre-selection filtering unit and is used for carrying out power level adjustable attenuation on the input low-frequency broadband signals;
the first broadband amplifying unit is connected with the first broadband adjustable attenuation module and is used for amplifying the power level of the attenuated signal;
the second broadband adjustable attenuation module is connected with the first broadband amplifying 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 is used for amplifying the power level of the attenuated signal again and meeting the requirement of the power level of the passage through combination.
4. The ultra-wideband signal analysis processing system 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 channel switching unit and is used for carrying out impedance matching on millimeter wave frequency band broadband input signals and inhibiting out-of-band self excitation;
the second band-pass filter unit comprises a plurality of different millimeter wave frequency band ranges and is used for carrying out-of-band suppression on millimeter wave frequency band broadband signal segmentation filtering;
the output end of the fourth broadband matching circuit is connected with the millimeter wave power level adjusting unit and is used for carrying out impedance matching on the millimeter wave broadband signals after filtering and inhibiting out-of-band self-excitation;
and the third channel switching unit is respectively connected with the third broadband matching circuit and the second band-pass filter unit, and the second band-pass filter unit and the fourth broadband matching circuit and is used for carrying out sectional switching on millimeter wave frequency band broadband signals.
5. The ultra-wideband signal analysis processing system supporting the 5G millimeter wave band of claim 1, wherein the millimeter wave power level adjusting unit comprises:
the third broadband adjustable attenuation module is connected with the millimeter wave frequency band pre-selection filtering unit and is used for carrying out power level adjustable attenuation on the input millimeter wave broadband signals;
the third broadband amplifying unit is connected with the third broadband adjustable attenuation module and is 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 is used for amplifying the power level of the attenuated signal again and meeting the requirement of the power level of the passage through combination.
6. The ultra-wideband signal analysis processing system supporting 5G millimeter wave band 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 filters;
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 signals so as to realize ultra-wideband signal analysis.
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