CN104009765B - A kind of high-performance LTE channel simulator radio frequency sending set - Google Patents
A kind of high-performance LTE channel simulator radio frequency sending set Download PDFInfo
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Abstract
The invention discloses a kind of high-performance LTE channel simulator radio frequency sending set, comprise intermediate frequency Modulation module, intermediate frequency automatic electric-level adjustment (ALC) module, segmentation variable-frequency filtering module, radio-frequency power adjustment output/detection module and local oscillator module.A kind of high-performance LTE channel simulator radio frequency sending set provided by the invention, effectively can reduce LTE channel simulator complexity, reduce power consumption and volume, realize the Larger Dynamic of transmitter, broadband, low complex degree.
Description
Technical field
The present invention relates to a kind of high-performance LTE channel simulator radio frequency sending set, belong to microwave/millimeter wave device technology.
Background technology
" new generation broadband wireless mobile communication net " national science and technology key special subjects is that the Chinese government is in order to promote the overall development of Communication in China industry, promote the status of China's wireless mobile communications industry in the whole world, cultivate China's mobile communications industry capability of sustainable development, pull the important measures of China's national industry innovation and development.TD-LTE and evolution technology TD-LTE-Advanced thereof, as the follow-up evolution technology of TD-SCDMA with the independent intellectual property of China, will embody the right of speech of China in international communication field and competitiveness more.
Wireless channel is very complicated and changeable signal physical channel, wireless channel also exists the unfavorable factor that multipath fading, flat decline, noise etc. affect communication performance, and these be all communication systems must emphasis consider problem, the simulation of channel is under ensureing same communication protocol and system system, the requisite testing process of smooth and easy communication between the system equipment that the terminal of different manufacturers exploitation and many producers provide.By development support LTE radio channel simulator; save the development cost of mobile communication equipment; add flexibility during research and development; shorten the lead time simultaneously; reduce the overall development process of base station and terminal equipment and interconnect the testing time; reduce time of field testing, to improve and ensure different system, the interconnection and interflow of manufacturer terminal has very positive effect.
LTE channel simulator middle width strip radio frequency sending set is key component in whole equipment, Simulation with I, Q signal that this radio frequency sending set can will be launched needed for base band, launch according to demand, the frequency range of launching is 400MHz ~ 6GHz, transmitter transmitting power scope is-120 ~-10dBm, the process bandwidth of transmitter can reach 100MHz, is adjusted, also need the feature possessing low complex degree, low-power consumption, Larger Dynamic simultaneously by the phase place of local oscillator in adjustment modulator to transmitter channels phase place.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of high-performance LTE channel simulator radio frequency sending set, effectively can reduce LTE channel simulator complexity, reduce power consumption and volume, realize the Larger Dynamic of transmitter, broadband, low complex degree.
Technical scheme: for achieving the above object, the technical solution used in the present invention is:
Wide band radio-frequency transmitter is the core component of RF and microwave system, in communication, radar and electronic countermeasures, have key effect, and its key technical indexes is transmitted bandwidth, launching electrical level dynamic range, process bandwidth etc.The high-performance LTE channel simulator radio frequency sending set of the present invention's design, has outputting bandwidth, and power dynamically large, process is with wide, the features such as volume is little, low in energy consumption.Specifically comprise intermediate frequency Modulation module, intermediate frequency automatic electric-level adjustment (ALC) module, segmentation variable-frequency filtering module, radio-frequency power adjustment output/detection module and local oscillator module;
Described intermediate frequency Modulation module: carry out orthogonal vector modulation to the analog signal I inputted and analog signal Q, produces modulated intermediate frequency signal, then the modulated intermediate frequency signal obtained is sent to intermediate frequency automatic electric-level adjusting module; In intermediate frequency Modulation module, insert the IF-FRE synthesizer of a phase-adjustable, make the local oscillation signal phase-adjustable of input, realize the function of radio-frequency transmissions phase-adjustable;
Described intermediate frequency automatic electric-level adjusting module: adjust the level magnitudes of input signal, adjusts to after in threshold range and sends to segmentation variable-frequency filtering module;
Described segmentation variable-frequency filtering module: carry out frequency-division section process to input signal, for different frequency ranges, after carrying out respective variable-frequency filtering cell processing respectively, changes to corresponding frequency range and sends to radio-frequency power to adjust output/detection module;
Described radio-frequency power adjustment output/detection module: detect the power of input signal, if input signal power is greater than threshold value, then exports as wide band radio-frequency output signal after carrying out attenuation processing to input signal; If input signal is less than or equal to threshold value, then direct as the output of wide band radio-frequency output signal;
Described local oscillator module: provide radio-frequency (RF) local oscillator signal to LTE channel simulator.
In order to realize the accurate control to phase place in radio circuit, phase shifter usually can be inserted to realize phase place adjustment in transceiver.Adopt different phase shifter schemes, Phasing is also different.Analog phase shifter bandwidth of operation is narrow; Digital control phase shifter operational frequency bandwidth can wide a little point, but phase shifting accuracy is not high enough, and general typical phase shifting accuracy is 6.25 degree.The scheme that the present invention adopts is in demodulation link, insert the frequency synthesizer of an intermediate frequency phase-adjustable, the phase place Adjustment precision of this frequency synthesizer can reach 2 degree, precision is high, and implementation method is simple, do not need in receiver and sender, all insert complicated phase-shift circuit, reduce the complexity of LTE channel simulator frequency synthesizer further.
Due to the wide frequency range of radio frequency sending set, traditional transmitter schemes cannot take into account so wide band limits; The present invention realizes broadband by adopting the method for segment processing.The dynamic range requirement of the power that transmitter exports is also very large, and realize Larger Dynamic in so wide frequency range, also very difficult, the dynamic range that the present invention proposes power realizes on intermediate frequency, radio frequency only need add relevant numerical-control attenuator, calibrate Frequency Response.
Concrete, described intermediate frequency Modulation module carries out orthogonal vector modulation to the analog signal I of input and analog signal Q, and producing frequency is the modulated intermediate frequency signal of 1.2GHz, then the modulated intermediate frequency signal obtained is sent to intermediate frequency automatic electric-level adjusting module.
Concrete, described intermediate frequency Modulation module comprises intermediate frequency modulator.
Concrete, described intermediate frequency automatic electric-level adjusting module comprises the A intermediate frequency amplifier, A intermediate-frequency filter, B intermediate frequency amplifier, A intermediate frequency numerical-control attenuator, B intermediate frequency numerical-control attenuator, C intermediate frequency amplifier, C intermediate frequency numerical-control attenuator and the B intermediate-frequency filter that connect successively, the output of the input termination intermediate frequency Modulation module of A intermediate frequency amplifier, the input of the output termination directional coupler of B intermediate-frequency filter, the coupled end of directional coupler connects D intermediate frequency amplifier and intermediate frequency wave detector successively, the input of the output termination segmentation variable-frequency filtering module of directional coupler.
Concrete, the radiofrequency signal of described segmentation variable-frequency filtering module to the 400MHz ~ 6GHz of input carries out frequency-division section process, for different frequency ranges, after carrying out respective variable-frequency filtering cell processing respectively, the intermediate-freuqncy signal of 1.2GHz is changed to corresponding frequency range and sends to radio-frequency power to adjust output/detection module;
Concrete, described segmentation variable-frequency filtering module comprises A radio frequency single-pole double-throw switch (SPDT), A radio frequency amplifier, A radio-frequency (RF) mixer, B radio frequency amplifier, radio frequency divider, B radio-frequency (RF) mixer, C radio frequency amplifier, D radio frequency amplifier, B radio frequency single-pole double-throw switch (SPDT), A radio frequency hilted broadsword four throw switch, D radio frequency tunable filter, C radio frequency tunable filter, B radio frequency tunable filter, A radio frequency tunable filter and B radio frequency hilted broadsword four throw switch, the output of the input termination intermediate frequency automatic electric-level adjusting module of A radio frequency single-pole double-throw switch (SPDT), the input of the output termination radio-frequency power adjustment output/detection module of B radio frequency hilted broadsword four throw switch,
One tunnel of described A radio frequency single-pole double-throw switch (SPDT) exports and connects A radio frequency amplifier, A radio-frequency (RF) mixer and C radio frequency amplifier successively, then accesses a road input of B radio frequency single-pole double-throw switch (SPDT); Another road of described A radio frequency single-pole double-throw switch (SPDT) exports and connects B radio frequency amplifier, B radio-frequency (RF) mixer and D radio frequency amplifier successively, then accesses another road input of B radio frequency single-pole double-throw switch (SPDT); Connected by radio frequency divider between A radio-frequency (RF) mixer and B radio-frequency (RF) mixer;
The output of described B radio frequency single-pole double-throw switch (SPDT) is connected with the input of A radio frequency hilted broadsword four throw switch, four tunnels of A radio frequency hilted broadsword four throw switch export the input connecting D radio frequency tunable filter, C radio frequency tunable filter, B radio frequency tunable filter and A radio frequency tunable filter respectively, and D radio frequency tunable filter, C radio frequency tunable filter, B radio frequency tunable filter and the output of A radio frequency tunable filter are connected four tunnel inputs of B radio frequency hilted broadsword four throw switch respectively;
Described D radio frequency tunable filter process 400MHz ~ 1GHz signal, C radio frequency tunable filter process 1GHz ~ 2GHz signal, B radio frequency tunable filter process 2GHz ~ 4GHz signal, A radio frequency tunable filter process 4GHz ~ 6GHz signal.
Concrete, described radio-frequency power adjustment output/detection module comprises RF broadband amplifier, radio frequency numerical-control attenuator, braodband directional coupler, E radio frequency amplifier and radio frequency detector device, the input termination of the output termination RF broadband amplifier of segmentation variable-frequency filtering module, the input of the output termination radio frequency numerical-control attenuator of RF broadband amplifier, the input of the output termination braodband directional coupler of radio frequency numerical-control attenuator, the coupled end of braodband directional coupler connects E radio frequency amplifier and radio frequency detector device successively, the output of braodband directional coupler exports wide band radio-frequency output signal.
Concrete, described local oscillator module comprises IF-FRE synthesizer and rf frequency synthesizer, IF-FRE synthesizer provides intermediate frequency local oscillator signal to intermediate frequency modulator, rf frequency synthesizer provides A radio-frequency (RF) local oscillator signal to A radio-frequency (RF) mixer, and rf frequency synthesizer provides B radio-frequency (RF) local oscillator signal through radio frequency divider to B radio-frequency (RF) mixer.
Concrete, also comprise single chip control module and power module, the chip of described one-chip computer module to B radio frequency hilted broadsword four throw switch, A radio frequency tunable filter, B radio frequency tunable filter, C radio frequency tunable filter, D radio frequency tunable filter, A radio frequency hilted broadsword four throw switch, B radio frequency single-pole double-throw switch (SPDT), radio frequency divider, A radio frequency single-pole double-throw switch (SPDT), rf frequency synthesizer, C intermediate frequency numerical-control attenuator, B intermediate frequency numerical-control attenuator and A intermediate frequency numerical-control attenuator controls.
Beneficial effect: a kind of high-performance LTE channel simulator radio frequency sending set provided by the invention, effectively can reduce LTE channel simulator complexity, reduce power consumption and volume, realize the Larger Dynamic of transmitter, broadband, low complex degree; There is bandwidth, Larger Dynamic, power consumption is little, volume is little, modulation accuracy is high feature, be suitable in LTE channel simulator and corresponding wide band radio-frequency transmitter.
Accompanying drawing explanation
Fig. 1 is the block diagram of the wide band radio-frequency transmitter be applied in LTE channel simulator provided by the invention;
Fig. 2 is the specific implementation block diagram of the wide band radio-frequency transmitter be applied in LTE channel simulator.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
Be a kind of high-performance LTE channel simulator radio frequency sending set as shown in Figure 1 and Figure 2, comprise intermediate frequency Modulation module, intermediate frequency automatic electric-level adjusting module, segmentation variable-frequency filtering module, radio-frequency power adjustment output/detection module, local oscillator module, single chip control module and power module; Illustrated with regard to modules below.
Described intermediate frequency Modulation module: orthogonal vector modulation is carried out to the analog signal I inputted and analog signal Q, producing frequency is the modulated intermediate frequency signal of 1.2GHz, then the modulated intermediate frequency signal obtained is sent to intermediate frequency automatic electric-level adjusting module; In intermediate frequency Modulation module, insert the IF-FRE synthesizer of a phase-adjustable, make the local oscillation signal phase-adjustable of input, realize the function of radio-frequency transmissions phase-adjustable.
Described intermediate frequency Modulation module comprises intermediate frequency modulator 32.
Described intermediate frequency automatic electric-level adjusting module: adjust in the threshold range of-10 ~-120dBm by the level magnitudes of input signal, adjusts to after in threshold range and sends to segmentation variable-frequency filtering module.
Described intermediate frequency automatic electric-level adjusting module comprises the A intermediate frequency amplifier 31 connected successively, A intermediate-frequency filter 30, B intermediate frequency amplifier 29, A intermediate frequency numerical-control attenuator 28, B intermediate frequency numerical-control attenuator 27, C intermediate frequency amplifier 26, C intermediate frequency numerical-control attenuator 25 and B intermediate-frequency filter 22, the output of the input termination intermediate frequency Modulation module of A intermediate frequency amplifier 31, the input of the output termination directional coupler 21 of B intermediate-frequency filter 22, the coupled end of directional coupler 21 connects D intermediate frequency amplifier 23 and intermediate frequency wave detector 24 successively, the input of the output termination segmentation variable-frequency filtering module of directional coupler 21.
Described segmentation variable-frequency filtering module: carry out frequency-division section process to input signal, for different frequency ranges, after carrying out respective variable-frequency filtering cell processing respectively, changes to corresponding frequency range and sends to radio-frequency power to adjust output/detection module; The radiofrequency signal of described segmentation variable-frequency filtering module to the 400MHz ~ 6GHz of input carries out frequency-division section process, for different frequency ranges, after carrying out respective variable-frequency filtering cell processing respectively, the intermediate-freuqncy signal of 1.2GHz is changed to corresponding frequency range and sends to radio-frequency power to adjust output/detection module.
Described segmentation variable-frequency filtering module comprises A radio frequency single-pole double-throw switch (SPDT) 18, A radio frequency amplifier 17, A radio-frequency (RF) mixer 16, B radio frequency amplifier 15, radio frequency divider 14, B radio-frequency (RF) mixer 13, C radio frequency amplifier 12, D radio frequency amplifier 11, B radio frequency single-pole double-throw switch (SPDT) 10, A radio frequency hilted broadsword four throw switch 9, D radio frequency tunable filter 8, C radio frequency tunable filter 7, B radio frequency tunable filter 6, A radio frequency tunable filter 5 and B radio frequency hilted broadsword four throw switch 4, the output of the input termination intermediate frequency automatic electric-level adjusting module of A radio frequency single-pole double-throw switch (SPDT) 18, the input of the output termination radio-frequency power adjustment output/detection module of B radio frequency hilted broadsword four throw switch 4.
One tunnel of described A radio frequency single-pole double-throw switch (SPDT) 18 exports and connects A radio frequency amplifier 17, A radio-frequency (RF) mixer 16 and C radio frequency amplifier 12 successively, then accesses a road input of B radio frequency single-pole double-throw switch (SPDT) 10; Another road of described A radio frequency single-pole double-throw switch (SPDT) 18 exports and connects B radio frequency amplifier 15, B radio-frequency (RF) mixer 13 and D radio frequency amplifier 11 successively, then accesses another road input of B radio frequency single-pole double-throw switch (SPDT) 10; Connected by radio frequency divider 14 between A radio-frequency (RF) mixer 16 and B radio-frequency (RF) mixer 13.
The output of described B radio frequency single-pole double-throw switch (SPDT) 10 is connected with the input of A radio frequency hilted broadsword four throw switch 9, four tunnels of A radio frequency hilted broadsword four throw switch 9 export the input connecting D radio frequency tunable filter 8, C radio frequency tunable filter 7, B radio frequency tunable filter 6 and A radio frequency tunable filter 5 respectively, and D radio frequency tunable filter 8, C radio frequency tunable filter 7, B radio frequency tunable filter 6 and the output of A radio frequency tunable filter 5 are connected four tunnel inputs of B radio frequency hilted broadsword four throw switch 4 respectively.
400 ~ 1GHz radio frequency output signal is by after A radio frequency single-pole double-throw switch (SPDT) 18, B radio frequency amplifier 15, B radio-frequency (RF) mixer 13 by intermediate frequency 1.2GHz modulation signal, produce the rf modulated signal of 400MHz ~ 1GHz, again through D radio frequency amplifier 11, B radio frequency single-pole double-throw switch (SPDT) 10, A radio frequency hilted broadsword four throw switch 9, D radio frequency tunable filter 8 and B radio frequency hilted broadsword four throw switch 4, finally arrive radio-frequency power adjustment/detection module.
1 ~ 2GHz radio frequency output signal is by after A radio frequency single-pole double-throw switch (SPDT) 18, B radio frequency amplifier 15, B radio-frequency (RF) mixer 13 by intermediate frequency 1.2GHz modulation signal, produce the rf modulated signal of 1 ~ 2GHz, again through C radio frequency amplifier 12, B radio frequency single-pole double-throw switch (SPDT) 10, A radio frequency hilted broadsword four throw switch 9, C radio frequency tunable filter 7 and B radio frequency hilted broadsword four throw switch 4, finally arrive radio-frequency power adjustment/detection module.
2 ~ 4GHz radio frequency output signal is by after A radio frequency single-pole double-throw switch (SPDT) 18, A radio frequency amplifier 17, A radio-frequency (RF) mixer 16 by intermediate frequency 1.2GHz modulation signal, produce the rf modulated signal of 2 ~ 4GHz, again through C radio frequency amplifier 12, B radio frequency single-pole double-throw switch (SPDT) 10, A radio frequency hilted broadsword four throw switch 9, B radio frequency tunable filter 6 and B radio frequency hilted broadsword four throw switch 4, finally arrive radio-frequency power adjustment/detection module.
4 ~ 6GHz radio frequency output signal is by after A radio frequency single-pole double-throw switch (SPDT) 18, A radio frequency amplifier 17, A radio-frequency (RF) mixer 16 by intermediate frequency 1.2GHz modulation signal, produce the rf modulated signal of 4 ~ 6GHz, again through C radio frequency amplifier 12, B radio frequency single-pole double-throw switch (SPDT) 10, A radio frequency hilted broadsword four throw switch 9, A radio frequency tunable filter 5 and B radio frequency hilted broadsword four throw switch 4, finally arrive radio-frequency power adjustment/detection module.
Described radio-frequency power adjustment output/detection module: detect the power of input signal, if input signal power is greater than threshold value, then exports as wide band radio-frequency output signal after carrying out attenuation processing to input signal; If input signal is less than or equal to threshold value, then direct as the output of wide band radio-frequency output signal.
Described radio-frequency power adjustment output/detection module comprises RF broadband amplifier 3, radio frequency numerical-control attenuator 2, braodband directional coupler 1, E radio frequency amplifier 34 and radio frequency detector device 35, the input termination of the output termination RF broadband amplifier 3 of segmentation variable-frequency filtering module, the input of the output termination radio frequency numerical-control attenuator 2 of RF broadband amplifier 3, the input of the output termination braodband directional coupler 1 of radio frequency numerical-control attenuator 2, the coupled end of braodband directional coupler 1 connects E radio frequency amplifier 34 and radio frequency detector device 35 successively, the output of braodband directional coupler 1 exports wide band radio-frequency output signal.
Described local oscillator module: provide radio-frequency (RF) local oscillator signal to LTE channel simulator.
Described local oscillator module comprises IF-FRE synthesizer 20 and rf frequency synthesizer 19, IF-FRE synthesizer 20 provides intermediate frequency local oscillator signal to intermediate frequency modulator 32, rf frequency synthesizer 19 provides A radio-frequency (RF) local oscillator signal to A radio-frequency (RF) mixer 16, and rf frequency synthesizer 19 provides B radio-frequency (RF) local oscillator signal to B radio-frequency (RF) mixer 13 through radio frequency divider 14.
The chip of described one-chip computer module to B radio frequency hilted broadsword four throw switch 4, A radio frequency tunable filter 5, B radio frequency tunable filter 6, C radio frequency tunable filter 7, D radio frequency tunable filter 8, A radio frequency hilted broadsword four throw switch 9, B radio frequency single-pole double-throw switch (SPDT) 10, radio frequency divider 14, A radio frequency single-pole double-throw switch (SPDT) 18, rf frequency synthesizer 19, C intermediate frequency numerical-control attenuator 25, B intermediate frequency numerical-control attenuator 27 and A intermediate frequency numerical-control attenuator 28 controls.
Described power module is whole circuit supply.
The dynamic range of transmitter is large, this case has done the automatic level control circuit of a Larger Dynamic at intermediate frequency, the Larger Dynamic of realizing circuit, also an automatic level control circuit is inserted in radio frequency part, calibrate the amplitude of device caused by the response of different frequency is unbalanced, thus realize the Larger Dynamic of whole transmitter.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. a high-performance LTE channel simulator radio frequency sending set, is characterized in that: comprise intermediate frequency Modulation module, intermediate frequency automatic electric-level adjusting module, segmentation variable-frequency filtering module, radio-frequency power adjustment output/detection module and local oscillator module;
Described intermediate frequency Modulation module: carry out orthogonal vector modulation to the analog signal I inputted and analog signal Q, produces modulated intermediate frequency signal, then the modulated intermediate frequency signal obtained is sent to intermediate frequency automatic electric-level adjusting module; In intermediate frequency Modulation module, insert the IF-FRE synthesizer of a phase-adjustable, make the local oscillation signal phase-adjustable of input, realize the function of radio-frequency transmissions phase-adjustable;
Described intermediate frequency automatic electric-level adjusting module: adjust the level magnitudes of input signal, adjusts to after in threshold range and sends to segmentation variable-frequency filtering module;
Described segmentation variable-frequency filtering module: carry out frequency-division section process to input signal, for different frequency ranges, after carrying out respective variable-frequency filtering cell processing respectively, changes to corresponding frequency range and sends to radio-frequency power to adjust output/detection module;
Described radio-frequency power adjustment output/detection module: detect the power of input signal, if input signal power is greater than threshold value, then exports as wide band radio-frequency output signal after carrying out attenuation processing to input signal; If input signal is less than or equal to threshold value, then direct as the output of wide band radio-frequency output signal;
Described local oscillator module: provide radio-frequency (RF) local oscillator signal to LTE channel simulator;
Described intermediate frequency Modulation module carries out orthogonal vector modulation to the analog signal I of input and analog signal Q, and producing frequency is the modulated intermediate frequency signal of 1.2GHz, then the modulated intermediate frequency signal obtained is sent to intermediate frequency automatic electric-level adjusting module
Described intermediate frequency Modulation module comprises intermediate frequency modulator (32);
Described intermediate frequency automatic electric-level adjusting module comprises the A intermediate frequency amplifier (31) connected successively, A intermediate-frequency filter (30), B intermediate frequency amplifier (29), A intermediate frequency numerical-control attenuator (28), B intermediate frequency numerical-control attenuator (27), C intermediate frequency amplifier (26), C intermediate frequency numerical-control attenuator (25) and B intermediate-frequency filter (22), the output of the input termination intermediate frequency Modulation module of A intermediate frequency amplifier (31), the input of the output termination directional coupler (21) of B intermediate-frequency filter (22), the coupled end of directional coupler (21) connects D intermediate frequency amplifier (23) and intermediate frequency wave detector (24) successively, the input of the output termination segmentation variable-frequency filtering module of directional coupler (21),
The radiofrequency signal of described segmentation variable-frequency filtering module to the 400MHz ~ 6GHz of input carries out frequency-division section process, for different frequency ranges, after carrying out respective variable-frequency filtering cell processing respectively, the intermediate-freuqncy signal of 1.2GHz is changed to corresponding frequency range and sends to radio-frequency power to adjust output/detection module;
Described segmentation variable-frequency filtering module comprises A radio frequency single-pole double-throw switch (SPDT) (18), A radio frequency amplifier (17), A radio-frequency (RF) mixer (16), B radio frequency amplifier (15), radio frequency divider (14), B radio-frequency (RF) mixer (13), C radio frequency amplifier (12), D radio frequency amplifier (11), B radio frequency single-pole double-throw switch (SPDT) (10), A radio frequency hilted broadsword four throw switch (9), D radio frequency tunable filter (8), C radio frequency tunable filter (7), B radio frequency tunable filter (6), A radio frequency tunable filter (5) and B radio frequency hilted broadsword four throw switch (4), the output of the input termination intermediate frequency automatic electric-level adjusting module of A radio frequency single-pole double-throw switch (SPDT) (18), the input of the output termination radio-frequency power adjustment output/detection module of B radio frequency hilted broadsword four throw switch (4),
One tunnel of described A radio frequency single-pole double-throw switch (SPDT) (18) exports and connects A radio frequency amplifier (17), A radio-frequency (RF) mixer (16) and C radio frequency amplifier (12) successively, then accesses a road input of B radio frequency single-pole double-throw switch (SPDT) (10); Another road of described A radio frequency single-pole double-throw switch (SPDT) (18) exports and connects B radio frequency amplifier (15), B radio-frequency (RF) mixer (13) and D radio frequency amplifier (11) successively, then accesses another road input of B radio frequency single-pole double-throw switch (SPDT) (10); Connected by radio frequency divider (14) between A radio-frequency (RF) mixer (16) and B radio-frequency (RF) mixer (13);
The output of described B radio frequency single-pole double-throw switch (SPDT) (10) is connected with the input of A radio frequency hilted broadsword four throw switch (9), four tunnels of A radio frequency hilted broadsword four throw switch (9) export and connect D radio frequency tunable filter (8) respectively, C radio frequency tunable filter (7), the input of B radio frequency tunable filter (6) and A radio frequency tunable filter (5), D radio frequency tunable filter (8), C radio frequency tunable filter (7), B radio frequency tunable filter (6) and the output of A radio frequency tunable filter (5) are connected four tunnel inputs of B radio frequency hilted broadsword four throw switch (4) respectively,
Described D radio frequency tunable filter (8) process 400MHz ~ 1GHz signal, C radio frequency tunable filter (7) process 1GHz ~ 2GHz signal, B radio frequency tunable filter (6) process 2GHz ~ 4GHz signal, A radio frequency tunable filter (5) process 4GHz ~ 6GHz signal.
2. high-performance LTE channel simulator radio frequency sending set according to claim 1, it is characterized in that: described radio-frequency power adjustment output/detection module comprises RF broadband amplifier (3), radio frequency numerical-control attenuator (2), braodband directional coupler (1), E radio frequency amplifier (34) and radio frequency detector device (35), the input termination of the output termination RF broadband amplifier (3) of segmentation variable-frequency filtering module, the input of output termination radio frequency numerical-control attenuator (2) of RF broadband amplifier (3), the input of the output termination braodband directional coupler (1) of radio frequency numerical-control attenuator (2), the coupled end of braodband directional coupler (1) connects E radio frequency amplifier (34) and radio frequency detector device (35) successively, the output of braodband directional coupler (1) exports wide band radio-frequency output signal.
3. high-performance LTE channel simulator radio frequency sending set according to claim 1, it is characterized in that: described local oscillator module comprises IF-FRE synthesizer (20) and rf frequency synthesizer (19), IF-FRE synthesizer (20) provides intermediate frequency local oscillator signal to intermediate frequency modulator (32), rf frequency synthesizer (19) provides A radio-frequency (RF) local oscillator signal to A radio-frequency (RF) mixer (16), and rf frequency synthesizer (19) provides B radio-frequency (RF) local oscillator signal through radio frequency divider (14) to B radio-frequency (RF) mixer (13).
4. high-performance LTE channel simulator radio frequency sending set according to claim 1, it is characterized in that: also comprise single chip control module and power module, described one-chip computer module is to B radio frequency hilted broadsword four throw switch (4), A radio frequency tunable filter (5), B radio frequency tunable filter (6), C radio frequency tunable filter (7), D radio frequency tunable filter (8), A radio frequency hilted broadsword four throw switch (9), B radio frequency single-pole double-throw switch (SPDT) (10), radio frequency divider (14), A radio frequency single-pole double-throw switch (SPDT) (18), rf frequency synthesizer (19), C intermediate frequency numerical-control attenuator (25), the chip of B intermediate frequency numerical-control attenuator (27) and A intermediate frequency numerical-control attenuator (28) controls.
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| CN113009438A (en) * | 2021-05-25 | 2021-06-22 | 成都雷通科技有限公司 | Emission type radio frequency injection type broadband multi-target simulator |
| CN114268395B (en) * | 2021-12-16 | 2024-02-06 | 东南大学 | Experimental device for intelligent frequency spectrum monitoring of quick broadband developments |
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| US8159208B2 (en) * | 2007-12-20 | 2012-04-17 | Anritsu Company | Hand-held microwave spectrum analyzer with operation range from 9 KHz to over 20 GHz |
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| CN1250985A (en) * | 1998-10-12 | 2000-04-19 | 株式会社东芝 | Radio communication device, and integrated circuit used in such device |
| CN202095011U (en) * | 2011-06-30 | 2011-12-28 | 北京市北康晟电子技术有限公司 | All-standard radio frequency circuit system of digital television modulator |
| CN203645654U (en) * | 2014-01-08 | 2014-06-11 | 四川九洲电器集团有限责任公司 | Ka wave band frequency conversion emission assembly |
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