CN201054734Y - A broad frequency monitoring receiver - Google Patents
A broad frequency monitoring receiver Download PDFInfo
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- CN201054734Y CN201054734Y CNU2007201245919U CN200720124591U CN201054734Y CN 201054734 Y CN201054734 Y CN 201054734Y CN U2007201245919 U CNU2007201245919 U CN U2007201245919U CN 200720124591 U CN200720124591 U CN 200720124591U CN 201054734 Y CN201054734 Y CN 201054734Y
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Abstract
A wide frequency monitoring receiver comprises a radio frequency front end circuit, a first-conversion circuit and a double-conversion circuit. The mode of frequency conversion in segmentation is adopted, and a multi-channel mild octave switch-filter selective filter group, a low-noise preamplifier and a double-conversion filtering amplifying module ensure that the maximum operating efficiency of the receiver is controlled in a frequency scope of 3GHz. The difficulty of manufacturing and commissioning the devices is greatly lowered and the excellent performance of frequency selection can be realized. The utility model has the advantages that the wide frequency monitoring receiver has strong anti-interference ability and also ensures the effective receiving of the weak signal, thereby greatly enhancing comprehensive performance index, having reasonable structure and having producibility.
Description
Technical field
The utility model relates to a kind of wireless receiver, particularly a kind of monitoring receiver of wideband section.
Background technology
The high intermediate frequency secondary heterodyne frequency changing scheme of the general employing of existing 3G monitoring receiver is prolonged the frequency range to 7～8GHz on whole receiving system working frequency range is general.Because working frequency range is broadening greatly, various element manufacturing difficulty increase greatly, and device technology index and performance decline to a great extent, and debugging difficulty is multiplied, and both have been not suitable for producing in batches and the cost reduction, also can't realize higher combination property.This class receiver often exists that dynamic range is not high enough, glitch is big, be easy to generate problems such as intermodulation distortion.
Summary of the invention
In order to overcome in the prior art, defectives such as the 3G monitoring receiver is little at dynamic range of signals, intermodulation distortion, device index request height, manufacture difficulty are big, the purpose of this utility model is to provide a kind of and satisfies in the 20mhz-3000mhz frequency range, adopt segmentation frequency conversion mode, the integrated performance index of raising under the wideband state, and the convenient receiver of realizing making production.
The purpose of this utility model is achieved in that a kind of wideband monitoring receiver, it comprises radio-frequency (RF) front-end circuit, single-conversion circuit, double conversion circuit, it is characterized in that: the radio-frequency (RF) front-end circuit input receives the broadband signal from antenna, and output connects the single-conversion circuit input end; The single-conversion circuit output end connects the double conversion circuit input end; Double conversion circuit output end output intermediate-freuqncy signal.
Described radio-frequency (RF) front-end circuit is by amplitude limiter U1A, radio frequency programmable attenuator U1B, hilted broadsword five throw switch U1C, four road preselection filter U2A, U2B, U2C and U2D, hilted broadsword four throw switch U2E, and low noise amplifier U2F, inferior octave preselection filter group U3A, low noise amplifier U3B and low pass filter U3C form; Amplitude limiter U1A output connects radio frequency programmable attenuator U1B input; Radio frequency programmable attenuator U1B output connects hilted broadsword five throw switch U1C inputs; Through the selection of hilted broadsword five throw switch U1C, radio frequency programmable attenuator U1B output signal can selectively connect the input of four road preselection filter U2A, U2B, U2C, U2D and inferior octave preselection filter group U3A; The output of four road preselection filter U2A, U2B, U2C, U2D connects hilted broadsword four throw switch U2E; Hilted broadsword four throw switch U2E outputs connect low noise amplifier U2F input; Low noise amplifier U2F output is connected to the single-conversion circuit; The output of inferior octave preselection filter group U3A connects low noise amplifier U3B input; Low noise amplifier U3B output connects low pass filter U3C input; Low pass filter U3C output is connected to the single-conversion circuit.
Described single-conversion circuit is made up of single-pole double-throw switch (SPDT) U4B, frequency mixer U4A, frequency mixer U4C, band pass filter U4D, band pass filter U4E, amplifier U4F, amplifier U4G and single-pole double-throw switch (SPDT) U4H; The low noise amplifier U2F output of radio-frequency (RF) front-end circuit connects frequency mixer U4A signal input part; The low pass filter U3C output of radio-frequency (RF) front-end circuit connects frequency mixer U4C; Single-pole double-throw switch (SPDT) U4B connects frequency mixer U4A and frequency mixer U4C respectively, and the local oscillation signal under the logical signal control is selectively connected frequency mixer U4A and frequency mixer U4C by single-pole double-throw switch (SPDT) U4B; Frequency mixer U4A output signal is connected to band pass filter U4D; Frequency mixer U4C output signal is connected to band pass filter U4E; Band pass filter U4D output connects amplifier U4F input; Band pass filter U4E output connects amplifier U4G input; Amplifier U4F output and amplifier U4G output are connected respectively to single-pole double-throw switch (SPDT) U4H; Select through single-pole double-throw switch (SPDT) U4H, the output signal of amplifier U4F and amplifier U4G is delivered to the double conversion circuit.
Described double conversion circuit is made up of two frequency mixer U5A, low pass filter U5B, amplifier U5C, band pass filter U5D, intermediate frequency programmable attenuator U5E, amplifier U5F; Output signal from the single-conversion circuit enters two frequency mixer U5A, and two local oscillation signals by outer input also insert two frequency mixer U5A simultaneously, for two frequency mixer U5A provide drive signal; The output of two frequency mixer U5A is connected to amplifier U5C input through low pass filter U5B; The output connecting band bandpass filter U5D input of amplifier U5C; Band pass filter U5D output connects the input of intermediate frequency programmable attenuator U5E; Intermediate frequency programmable attenuator U5E output termination amplifier U5F input; Amplifier U5F output intermediate-freuqncy signal is to the subordinate of receiver.
The beneficial effects of the utility model are: owing to adopted segmentation frequency conversion mode, the inferior octave switch filtering of multichannel frequency-selecting filter group, low-noise preamplifier, double conversion filtering amplification module, this receiver maximum operating frequency is controlled in the 3GHz band limits, element manufacturing and debugging difficulty reduce, can realize excellent frequency-selecting performance greatly, it is strong to have antijamming capability, can guarantee advantage again to effective reception of small-signal, integrated performance index improves greatly, simple in structure, have productibility.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is a functional-block diagram of the present utility model;
Fig. 2 is a circuit block diagram of the present utility model.
Embodiment
A kind of wideband monitoring receiver, it comprises radio-frequency (RF) front-end circuit, single-conversion circuit, double conversion circuit.The radio-frequency (RF) front-end circuit input receives the broadband signal from antenna, and output connects the single-conversion circuit input end; The single-conversion circuit output end connects the double conversion circuit input end; Double conversion circuit output end output intermediate-freuqncy signal.
Referring to Fig. 2.The radiofrequency signal of the 20MHz～3000MHz that is received by antenna is given radio frequency programmable attenuator U1B after amplitude limiter U1A protection.When receiving large-signal, radio frequency programmable attenuator U1B can decay large-signal, so that back utmost point signal receives.
Behind programmable attenuator U1B, signal gives hilted broadsword five throw switch U1C.By logical signal control, signal is divided into two frequency ranges of low section 20MHz～1GHz and high section 1GHz～3GHz receives.High segment signal is through after U2A, U2B, U2C and U2D four road preselection filter filtering, after giving U2E hilted broadsword four throw switches and selecting, is sent to high section one frequency mixer U4A again after low noise amplifier U2F amplifies.Low segment signal is given U3B low noise amplifier after giving inferior octave preselection filter group U3A frequency-selective filtering behind the hilted broadsword five throw switch U1C.Low noise amplifier U3B is sent to low section one a frequency mixer U4C after giving low pass filter U3C filtering with the signal amplification again.
One local oscillation signal of outer input provides local oscillation signal by single-pole double-throw switch (SPDT) U4B for high section one frequency mixer U4A and low section one frequency mixer U4B under the control of logical signal.When segment signal was hanged down in reception, single-pole double-throw switch (SPDT) U4B only provided local oscillation signal for a low section frequency mixer U4C; When receiving high segment signal, single-pole double-throw switch (SPDT) U4B only provides local oscillation signal for high section frequency mixer U4A.The signal of low noise amplifier U2F output is given band pass filter U4B and is carried out filtering after high section frequency mixer U4A frequency conversion, after amplifier U4F amplifies, gives single-pole double-throw switch (SPDT) U4H again.The signal of low pass filter U3C output is given band pass filter U4E and is carried out filtering after low section frequency mixer U4C frequency conversion, after amplifier U4G amplifies, give single-pole double-throw switch (SPDT) U4H again.U4H will give two frequency mixer U5A after the unification of height segment signal under the control of logical signal.
The signal of single-pole double-throw switch (SPDT) U4H output is after two frequency mixer U5A frequency conversions, after giving low pass filter U5B and carrying out low-pass filtering, again after amplifier U5C amplifies, give band pass filter U5D, after band pass filter U5D carries out bandpass filtering with signal, give intermediate frequency programmable attenuator U5E, after amplifier U5F amplifies the final output in back.Two frequency mixer U5A provide drive signal by outer input two local oscillation signals.
In radio-frequency (RF) front-end circuit, inferior octave switch filtering frequency-selecting filter group of high-performance multichannel and low-noise preamplifier have been adopted.This radio-frequency front-end can inferior octave frequency-selective filtering, and Insertion Loss is little simultaneously, noise factor is low, dynamic range is big.
Adopted high performance frequency conversion filtering amplification module in single-conversion and double conversion circuit, this module has that dynamic range is big, intermodulation product extremely low (second order, three rank section height), characteristics that the filtering selecting frequency characteristic is good.
Claims (3)
1. wideband monitoring receiver, it comprises radio-frequency (RF) front-end circuit, single-conversion circuit, double conversion circuit, it is characterized in that: the radio-frequency (RF) front-end circuit input receives the broadband signal from antenna, and output connects the single-conversion circuit input end; The single-conversion circuit output end connects the double conversion circuit input end; Double conversion circuit output end output intermediate-freuqncy signal.
2. wideband monitoring receiver according to claim 1, it is characterized in that: described radio-frequency (RF) front-end circuit is by amplitude limiter U1A, radio frequency programmable attenuator U1B, hilted broadsword five throw switch U1C, four road preselection filter U2A, U2B, U2C and U2D, hilted broadsword four throw switch U2E, and low noise amplifier U2F, inferior octave preselection filter group U3A, low noise amplifier U3B and low pass filter U3C form; Amplitude limiter U1A output connects radio frequency programmable attenuator U1B input; Radio frequency programmable attenuator U1B output connects hilted broadsword five throw switch U1C inputs; Through the selection of hilted broadsword five throw switch U1C, radio frequency programmable attenuator U1B output signal can selectively connect the input of four road preselection filter U2A, U2B, U2C, U2D and inferior octave preselection filter group U3A; The output of four road preselection filter U2A, U2B, U2C, U2D connects hilted broadsword four throw switch U2E; Hilted broadsword four throw switch U2E outputs connect low noise amplifier U2F input; Low noise amplifier U2F output is connected to the single-conversion circuit; The output of inferior octave preselection filter group U3A connects low noise amplifier U3B input; Low noise amplifier U3B output connects low pass filter U3C input; Low pass filter U3C output is connected to the single-conversion circuit.
3. wideband monitoring receiver according to claim 1 is characterized in that: described single-conversion circuit is made up of single-pole double-throw switch (SPDT) U4B, frequency mixer U4A, frequency mixer U4C, band pass filter U4D, band pass filter U4E, amplifier U4F, amplifier U4G and single-pole double-throw switch (SPDT) U4H; The low noise amplifier U2F output of radio-frequency (RF) front-end circuit connects frequency mixer U4A signal input part; The low pass filter U3C output of radio-frequency (RF) front-end circuit connects frequency mixer U4C; Single-pole double-throw switch (SPDT) U4B connects frequency mixer U4A and frequency mixer U4C respectively, and the local oscillation signal under the logical signal control is selectively connected frequency mixer U4A and frequency mixer U4C by single-pole double-throw switch (SPDT) U4B; Frequency mixer U4A output signal is connected to band pass filter U4D; Frequency mixer U4C output signal is connected to band pass filter U4E; Band pass filter U4D output connects amplifier U4F input; Band pass filter U4E output connects amplifier U4G input; Amplifier U4F output and amplifier U4G output are connected respectively to single-pole double-throw switch (SPDT) U4H; Select through single-pole double-throw switch (SPDT) U4H, the output signal of amplifier U4F and amplifier U4G is delivered to the double conversion circuit.
4, wideband monitoring receiver according to claim 1 is characterized in that: described double conversion circuit is made up of two frequency mixer U5A, low pass filter U5B, amplifier U5C, band pass filter U5D, intermediate frequency programmable attenuator U5E and amplifier U5F; Output signal from the single-conversion circuit enters two frequency mixer U5A, and two local oscillation signals by outer input also insert two frequency mixer U5A simultaneously, for two frequency mixer U5A provide drive signal; The output of two frequency mixer U5A is connected to amplifier U5C input through low pass filter U5B; The output connecting band bandpass filter U5D input of amplifier U5C; Band pass filter U5D output connects the input of intermediate frequency programmable attenuator U5E; Intermediate frequency programmable attenuator U5E output termination amplifier U5F input; Amplifier U5F output intermediate-freuqncy signal is to the subordinate of receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201245919U CN201054734Y (en) | 2007-06-28 | 2007-06-28 | A broad frequency monitoring receiver |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201245919U CN201054734Y (en) | 2007-06-28 | 2007-06-28 | A broad frequency monitoring receiver |
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| CN201054734Y true CN201054734Y (en) | 2008-04-30 |
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| CNU2007201245919U Expired - Lifetime CN201054734Y (en) | 2007-06-28 | 2007-06-28 | A broad frequency monitoring receiver |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917376A (en) * | 2010-07-30 | 2010-12-15 | 福建新大陆通信科技股份有限公司 | Two-stage frequency conversion method for digital down conversion system in multi-carrier digital receiver |
| CN101793924B (en) * | 2009-10-30 | 2012-06-13 | 北京航空航天大学 | Method for analyzing threshold of radiation intermodulation immunity of radio-frequency receiver |
| CN102843159A (en) * | 2012-08-21 | 2012-12-26 | 北京琨奇电子系统有限公司 | Microwave hyperspectral receiver and method |
| CN102983874A (en) * | 2012-12-24 | 2013-03-20 | 中国电子科技集团公司第五十四研究所 | S-frequency range broadband extremely-low intermodulation frequency converter |
| CN103001587A (en) * | 2012-12-24 | 2013-03-27 | 中国电子科技集团公司第五十四研究所 | X-frequency-range extra-low inter-modulation frequency converter device of measurement and control system |
| CN103036520A (en) * | 2012-12-05 | 2013-04-10 | 天津光电通信技术有限公司 | Short wave gating filter |
| CN103391047A (en) * | 2013-07-12 | 2013-11-13 | 成都林海电子有限责任公司 | 1.2GHz-bandwidth L-waveband down converter and down converter achieving method |
| CN103731170A (en) * | 2013-12-19 | 2014-04-16 | 天津光电通信技术有限公司 | High-performance monitoring receiver radio frequency front end design method |
| CN104506203A (en) * | 2014-12-17 | 2015-04-08 | 广州广电计量检测股份有限公司 | Radio frequency front end circuit for monitoring broadband satellite signal |
| CN105141324A (en) * | 2015-06-18 | 2015-12-09 | 成都广迈科技有限公司 | Multi-channel receiving device |
| CN107769805A (en) * | 2017-09-14 | 2018-03-06 | 中国电子科技集团公司第四十研究所 | A kind of receiving channel device for supporting standard traffic standard demodulation spectrum analysis |
| CN110190815A (en) * | 2019-05-28 | 2019-08-30 | 南京国立电子科技有限公司 | A kind of millimeter wave Phase amplitude-matched binary channels down conversion components |
| CN110880940A (en) * | 2019-12-20 | 2020-03-13 | 上海创远仪器技术股份有限公司 | Circuit structure for suppressing image frequency and spurious frequency interference in ultra-wideband receiver |
-
2007
- 2007-06-28 CN CNU2007201245919U patent/CN201054734Y/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793924B (en) * | 2009-10-30 | 2012-06-13 | 北京航空航天大学 | Method for analyzing threshold of radiation intermodulation immunity of radio-frequency receiver |
| CN101917376A (en) * | 2010-07-30 | 2010-12-15 | 福建新大陆通信科技股份有限公司 | Two-stage frequency conversion method for digital down conversion system in multi-carrier digital receiver |
| CN101917376B (en) * | 2010-07-30 | 2012-12-19 | 福建新大陆通信科技股份有限公司 | Two-stage frequency conversion method for digital down conversion system in multi-carrier digital receiver |
| CN102843159A (en) * | 2012-08-21 | 2012-12-26 | 北京琨奇电子系统有限公司 | Microwave hyperspectral receiver and method |
| CN103036520A (en) * | 2012-12-05 | 2013-04-10 | 天津光电通信技术有限公司 | Short wave gating filter |
| CN103001587A (en) * | 2012-12-24 | 2013-03-27 | 中国电子科技集团公司第五十四研究所 | X-frequency-range extra-low inter-modulation frequency converter device of measurement and control system |
| CN102983874A (en) * | 2012-12-24 | 2013-03-20 | 中国电子科技集团公司第五十四研究所 | S-frequency range broadband extremely-low intermodulation frequency converter |
| CN103391047A (en) * | 2013-07-12 | 2013-11-13 | 成都林海电子有限责任公司 | 1.2GHz-bandwidth L-waveband down converter and down converter achieving method |
| CN103731170A (en) * | 2013-12-19 | 2014-04-16 | 天津光电通信技术有限公司 | High-performance monitoring receiver radio frequency front end design method |
| CN104506203A (en) * | 2014-12-17 | 2015-04-08 | 广州广电计量检测股份有限公司 | Radio frequency front end circuit for monitoring broadband satellite signal |
| CN105141324A (en) * | 2015-06-18 | 2015-12-09 | 成都广迈科技有限公司 | Multi-channel receiving device |
| CN107769805A (en) * | 2017-09-14 | 2018-03-06 | 中国电子科技集团公司第四十研究所 | A kind of receiving channel device for supporting standard traffic standard demodulation spectrum analysis |
| CN107769805B (en) * | 2017-09-14 | 2019-08-30 | 中国电子科技集团公司第四十一研究所 | A kind of receiving channel device for supporting standard traffic standard demodulation spectrum analysis |
| CN110190815A (en) * | 2019-05-28 | 2019-08-30 | 南京国立电子科技有限公司 | A kind of millimeter wave Phase amplitude-matched binary channels down conversion components |
| CN110880940A (en) * | 2019-12-20 | 2020-03-13 | 上海创远仪器技术股份有限公司 | Circuit structure for suppressing image frequency and spurious frequency interference in ultra-wideband receiver |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080430 |