CN202103678U - Electric-controlled RF pretreatment device - Google Patents
Electric-controlled RF pretreatment device Download PDFInfo
- Publication number
- CN202103678U CN202103678U CN201120103204XU CN201120103204U CN202103678U CN 202103678 U CN202103678 U CN 202103678U CN 201120103204X U CN201120103204X U CN 201120103204XU CN 201120103204 U CN201120103204 U CN 201120103204U CN 202103678 U CN202103678 U CN 202103678U
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- radio frequency
- automatically controlled
- multiselect
- radio
- frequency
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Abstract
The utility model relates to an electric-controlled RF (Radio Frequency) pretreatment device and solves the problems that a conventional device has simplex function and can not be compatible with various RF signal treatment devices. In the utility model, a plurality of RF passages are in bridge connection with symmetric RF ports at multiple ends of two same electric-controlled multi-choice RF coaxial switches (1); the two electric-controlled multi-choice RF coaxial switches (1) are both connected with control interfaces of a power supply (8) and a controller (7); one of the electric-controlled multi-choice RF coaxial switches (1) is connected with a receiving antenna, and the other is connected with receiving equipment; and the controller (7) is connected with the receiving equipment and comprises a microprocessor connected with a display, the control interfaces and a local control keyboard.
Description
Technical field:
The utility model and be used for the preliminary treatment of the radiofrequency signal between radio monitoring field receiving equipment and the antenna, the device of indexs such as the sensitivity that improves the radio monitoring system and dynamic range is relevant.
Background technology:
The monitoring equipment major part of using in the radio monitoring system is broad-band reception antenna and broadband reception equipment (receiver or frequency spectrograph); Can be after some strong signals get into receiving equipment because the factors such as intermodulation, harmonic wave that receive produce glitch; The quality (for example aviation frequency range 108～137MHz frequency range is easy to receive the strong effect of signals of broadcast band 87～108MHz frequency range) of influence monitoring; And under current home and abroad environment; There is similar radiofrequency signal preprocessing function in the DDF225 radio monitoring system of only German R&S company, but only is limited to signal attenuation, the interference that can't suppress the out of band signal access arrangement thereby bring.
The utility model content:
The purpose of the utility model provide a kind of diverse in function, easy to use, solve strong signal and bring the electronic control radio frequency pretreatment unit of problems for the radio monitoring system.It is single to solve existing apparatus function, can't have the problem of multiple radio frequency signal processing equipment advantage concurrently.
The utility model is achieved in that
The utility model electronic control radio frequency pretreatment unit; The multichannel end symmetry prevention at radio-frequency port of two identical automatically controlled multiselect one RF coaxial switches 1 of some radio-frequency channels bridge joint; Two automatically controlled multiselect one RF coaxial switches 1 all are connected with the control interface of power supply 8, controller 7; Automatically controlled multiselect one a RF coaxial switch 1 is connected with reception antenna; Another automatically controlled multiselect one RF coaxial switch 1 is connected with receiving equipment, and controller 7 comprises and display, control interface, local supervisory keyboard microprocessor linked.
The radio-frequency channel that the straight-through device of radio frequency, radio frequency attenuator, radio frequency high pass filter, radio frequency low pass filter, the radio frequency band filter that two automatically controlled multiselect one RF coaxial switches 1 are connected by radio frequency cable or rf adapter respectively constitutes connects, and microprocessor is connected with RCI.
The utility model is built-in multiple radio frequency preliminary treatment device; Switching that can be through electronic switch to radiofrequency signal decay, processing (depending on built-in pretreatment element) such as high-pass filtering, LPF, bandpass filtering; Perhaps through connect signal is not handled signal; So that the dynamic range of extending radio monitoring system improves monitoring sensitivity, solve the interference that various strong signals bring.For easy to use, this electronic control radio frequency pretreatment unit provides the mode of local control and remote ethernet control, no matter and be which kind of mode, can both see easily which kind of current selecteed pretreatment element is.
The operation principle and the advantage of the utility model are following:
System's connected mode such as Fig. 2.Specifically, connect as the radio frequency put-through channel with 1 radio frequency cable or rf adapter S1 port two automatically controlled multiselect one RF coaxial switches; With radio frequency cable or rf adapter radio frequency attenuator is connected as the rf attenuation passage with S2 port with two automatically controlled multiselect one RF coaxial switches; With radio frequency cable or rf adapter the radio frequency high pass filter is connected as radio frequency high-pass filtering passage with the S3 port of two automatically controlled multiselect one RF coaxial switches; With radio frequency cable or rf adapter the radio frequency low pass filter is connected as radio frequency LPF passage with the S4 port of two automatically controlled multiselect one RF coaxial switches; With radio frequency cable or rf adapter radio frequency band filter is connected as radio frequency bandpass filtering passage with the S5 port of two automatically controlled multiselect one RF coaxial switches; The K1 pin of two automatically controlled multiselect one RF coaxial switch control interfaces is connected to the power module outlet positive pole with power line; The K5 pin is connected to the power module outlet negative pole with power line, and K3, K4, K8, K9 pin connect control interface Z1 to 24 and 25 to 28 pin that are connected respectively to controller with control line; The power supply of controller input positive and negative electrode is connected on the positive and negative electrode of power supply output of power module with power line respectively; RCI is connected with computer through the Ethernet netting twine, and the delivery outlet of two automatically controlled multiselect one RF coaxial switches links to each other with receiving equipment with antenna respectively with radio frequency cable.Keyboard input or the long-range transmission order of remote control software through controller; After controller 7 receives the order of passage gating; Through 2 automatically controlled multiselect one RF coaxial switches of control line Synchronization Control; The required radio-frequency channel of gating; Thereby seal in corresponding radio-frequency filter, radio frequency attenuator or straight-through in the middle of reaching reception antenna and the receiving equipment (receiver or frequency spectrograph) of radio monitoring system, effectively improve dynamic range, the monitoring sensitivity of radio monitoring system, and weaken and even eliminate the strong signal of successive bands and get into receiving equipment (receiver or frequency spectrograph) and produce and receive intermodulation, harmonic wave and strong signal blocking etc.
The utlity model has following function:
1, the gating of radio-frequency channel can local be controlled, also can be through network remote control.
2, the expanding system monitoring receives dynamic range.
3, weaken and even eliminate reception intermodulation, the harmonic wave strong signal blocking that strong signal place frequency range (for example 88～108MHz broadcast band) possibly brought other frequency range.
4, effectively improve the monitoring sensitivity of monitoring system to the frequency range (for example 118～137MHz earth-space communication frequency range) that needs emphasis monitoring.
Description of drawings:
Fig. 1 is the utility model structure chart
Fig. 2 is system wiring figure
Fig. 3 is system's electrical schematic diagram
Embodiment:
This main utility model mainly by among 2 identical automatically controlled multiselects, one RF coaxial switch 1, several radio-frequency channels 2-6 partly or entirely, controller 7 (containing display, local supervisory keyboard), power supply 8, RCI 9 form (like Fig. 1).The radio-frequency channel comprise in radio frequency put-through channel 2, rf attenuation passage 3, radio frequency high-pass filtering passage 4, radio frequency LPF passage 5, the radio frequency bandpass filtering passage 6 more than 2.Connect with radio frequency cable or rf adapter S1 port two automatically controlled multiselect one RF coaxial switches; With radio frequency cable or rf adapter the S2 port of radio frequency attenuator with two automatically controlled multiselect one RF coaxial switches is connected; With radio frequency cable or rf adapter the S3 port of radio frequency high pass filter with two automatically controlled multiselect one RF coaxial switches is connected; With radio frequency cable or rf adapter the S4 port of radio frequency low pass filter with two automatically controlled multiselect one RF coaxial switches is connected; With radio frequency cable or rf adapter the S5 port of radio frequency band filter with two automatically controlled multiselect one RF coaxial switches is connected; The power supply input of two automatically controlled multiselect one RF coaxial switch control interfaces is connected with the output of power supply with power line, and the control interface of two automatically controlled multiselect one RF coaxial switches links to each other with the control interface of controller through control line; The power supply input of controller links to each other with power module with power line; RCI is connected with computer through the Ethernet netting twine, and the delivery outlet of two automatically controlled multiselect one RF coaxial switches links to each other with receiving equipment with antenna respectively with radio frequency cable.
The automatically controlled multiselect one RF coaxial switch 1 that the utility model is alleged is meant the many signals selection diverter switches that are used for radiofrequency signal, and is automatically controlled, imports, exports non-directional.Like the coaxial switch that Shanghai China Hunan produces, model is SHX-801-06-L-2-2-D2.
The radio frequency put-through channel 2 that the utility model is alleged is meant the passage that the first input end mouth of radio frequency cable that loss is very little or rf adapter and two automatically controlled multiselect one RF coaxial switches is connected to form, and signal is not carried out any processing.
The rf attenuation passage 3 that the utility model is alleged is meant the passage that forms with radio frequency cable or radio frequency attenuator of rf adapter polyphone at second input port of two automatically controlled multiselect one RF coaxial switches.Radio frequency attenuator is meant the electronic device that all radiofrequency signals of passing through are necessarily decayed.30A-26-34 small-power fixed attenuator like the production of the sub-Co., Ltd of the rich news energising in Foochow.
The radio frequency high-pass filtering passage 4 that the utility model is alleged is meant the passage that forms with radio frequency cable or radio frequency high pass filter of rf adapter polyphone at the 3rd input port of two automatically controlled multiselect one RF coaxial switches.The radio frequency high pass filter is meant that the above signal of cut-off frequency passes through and the electronic device of following signal weakening of cut-off frequency or prevention.ATX PCI HP-8760 radio frequency high pass RF filter like day wideband network technology Co., Ltd production of Beijing sun.
The radio frequency LPF passage 5 that the utility model is alleged is meant the passage that forms with radio frequency cable or radio frequency low pass filter of rf adapter polyphone at the four-input terminal mouth of two automatically controlled multiselect one RF coaxial switches.The radio frequency low pass filter is meant that the following signal of cut-off frequency passes through and the electronic device of above signal weakening of cut-off frequency or prevention.ATX PCI LP-8750 type radio frequency low pass filter like day wideband network technology Co., Ltd production of Beijing sun.
The radio frequency bandpass filtering passage 6 that the utility model is alleged is meant the passage that forms with radio frequency cable or radio frequency band filter of rf adapter polyphone at the four-input terminal mouth of two automatically controlled multiselect one RF coaxial switches.Radio frequency band filter is meant to let signal pass through in the radio frequency passband, and the signal beyond the passband is had decay and inhibiting electronic device.ATX PCI WBP-8740 radio frequency band filter like day wideband network technology Co., Ltd production of Beijing sun.
The controller 7 that the utility model is alleged; Be meant the device that can receive external command and control two automatically controlled multiselect one RF coaxial switches, it comprises little process chip, display, input keyboard and network interface, and display uses the QST2D0028-A LCD; Master cpu is selected the LM3S6911 of TI company for use; Local supervisory keyboard uses common key-press, and the USB interface chip uses the CP2102 of Silicon company, and physical circuit figure sees Fig. 3.
The power supply 8 that the utility model is alleged; Be meant a kind of power supply apparatus that the 220V AC power is transformed to DC power supply (for example 5V, 12V); RD-50B two-way output Switching Power Supply is produced in for example commercially available Taiwan; Main effect is to microprocessor and two automatically controlled multiselect one RF coaxial switches DC power supply to be provided, and for example RD-50B (5V, 12V) two-way output Switching Power Supply is produced in Taiwan.
4 kinds of functions of the utility model are achieved in that
1, after the 220V civil power gets into; Be transformed into the 12V DC power supply through power module; Be divided into two-way; One the tunnel gives two automatically controlled multiselect one RF coaxial K switch 1 pin power supplies, leads up to integrated package LM2576 and PEG1117 in addition to microprocessor LM3S6911 and LCD LCD_QST2D0028A power supply.Microprocessor LM3S6911 receives from button, USB interface chip CP2102; Also has the order of network interface chip HR601680; Information is shown to LCD; Z1 to Z8 through controller is certain passage of the automatically controlled multiselect one RF coaxial switch 1 of gating simultaneously, reaches the purpose that Local or Remote is selected the different radio frequency passage.
2, when gating rf attenuation passage 3, can be with strong signal attenuation (attenuation be determined by radio frequency attenuator), avoid strong signal to get into producing behind the monitoring receiver receiving intermodulation in clipping distortion and the band, thereby the expanding system monitoring receives the upper limit of dynamic range effectively.
3, when gating high pass, low pass or band lead to the rf filtering passage respectively; Can the strong signal of special frequency (or Frequency point) be got rid of outside passband, get into receiving equipment in other frequency range generation reception intermodulation, harmonic wave and strong signal blocking thereby weaken and even eliminate strong signal.For example high pass rf filtering passage use the 108MHz high pass filter, when can weaken and even eliminate behind the gating FM broadcast band (87～108MHz) strong signal get into receiving equipment to 108MHz more than outer frequency range generation reception intermodulation, harmonic wave and strong signal blocking.
4, can use this band-pass filter of frequency band separately to the emphasis frequency range; When elected passband leads to the rf filtering passage; The strong signal that can weaken and even eliminate beyond this filter passbands gets into reception intermodulation, harmonic wave and the strong signal blocking that receiving equipment produces, effectively improve system in this filter passbands with interior monitoring sensitivity.For example use aviation earth-space communication frequency range (118～137MHz) band pass filters; (87～108MHz) get into receiving equipment in reception intermodulation, harmonic wave and strong signal blocking that the earth-space communication frequency range produces with the strong signal of TV, radar frequency band, effectively improve monitoring sensitivity can to eliminate broadcast band.
Claims (2)
1. electronic control radio frequency pretreatment unit; The multichannel end symmetry prevention at radio-frequency port that it is characterized in that two identical automatically controlled multiselects of some radio-frequency channels bridge joint, one RF coaxial switch (1); Two automatically controlled multiselect one RF coaxial switches (1) all are connected with the control interface of power supply (8), controller (7); Automatically controlled multiselect one a RF coaxial switch (1) is connected with reception antenna; Another automatically controlled multiselect one RF coaxial switch (1) is connected with receiving equipment, and controller (7) comprises and display, control interface, local supervisory keyboard microprocessor linked.
2. device according to claim 1; It is characterized in that the radio-frequency channel that the straight-through device of radio frequency, radio frequency attenuator, radio frequency high pass filter, radio frequency low pass filter, radio frequency band filter that two automatically controlled multiselect one RF coaxial switches (1) are connected by radio frequency cable or rf adapter respectively constitute connects, microprocessor is connected with RCI.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120103204XU CN202103678U (en) | 2011-04-11 | 2011-04-11 | Electric-controlled RF pretreatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120103204XU CN202103678U (en) | 2011-04-11 | 2011-04-11 | Electric-controlled RF pretreatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202103678U true CN202103678U (en) | 2012-01-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120103204XU Expired - Fee Related CN202103678U (en) | 2011-04-11 | 2011-04-11 | Electric-controlled RF pretreatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202103678U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007662A (en) * | 2014-05-07 | 2014-08-27 | 中国人民解放军63892部队 | Method and device for improving maximum signal to noise ratio consistency of radio frequency artificial antenna array |
| CN106645831A (en) * | 2016-11-28 | 2017-05-10 | 东莞市华庄电子有限公司 | Wireless static testing device and corresponding wireless static testing method |
-
2011
- 2011-04-11 CN CN201120103204XU patent/CN202103678U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007662A (en) * | 2014-05-07 | 2014-08-27 | 中国人民解放军63892部队 | Method and device for improving maximum signal to noise ratio consistency of radio frequency artificial antenna array |
| CN104007662B (en) * | 2014-05-07 | 2017-01-04 | 中国人民解放军63892部队 | One improves the radio frequency simulation conforming operation method of aerial array maximum signal to noise ratio |
| CN106645831A (en) * | 2016-11-28 | 2017-05-10 | 东莞市华庄电子有限公司 | Wireless static testing device and corresponding wireless static testing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20170411 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |