CN201716377U - Microwave frequency band radio monitoring system - Google Patents
Microwave frequency band radio monitoring system Download PDFInfo
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- CN201716377U CN201716377U CN2010202146306U CN201020214630U CN201716377U CN 201716377 U CN201716377 U CN 201716377U CN 2010202146306 U CN2010202146306 U CN 2010202146306U CN 201020214630 U CN201020214630 U CN 201020214630U CN 201716377 U CN201716377 U CN 201716377U
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- radio
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Abstract
The utility model relates to a microwave frequency band radio monitoring system, which resolves the problem that the existing system is small in dynamic range, few in function and poor in sensitivity. Two auxiliary directional antennas (1) are connected with two radiofrequency input ends of a switch attenuation component (2) through a radiofrequency cable or radiofrequency adapter, a radiofrequency output end of the switch attenuation component (2) is connected with an input end of a band-pass filter (3) through a radiofrequency cable or radiofrequency adapter, an output end of the band-pass filter (3) is connected with an input end of a low-noise frequency conversion amplifier (4) through a radiofrequency cable or radiofrequency adapter, an output end of the low-noise frequency conversion amplifier (4) is connected with a block distributor (5) through a radiofrequency cable or radiofrequency adapter, the block distributor (5) is connected with radio monitoring receiving equipment (9) through a radiofrequency cable or radiofrequency adapter, a microcomputer (8) is connected with the radio monitoring receiving equipment (9), an electronic control rotator (7) and the switch attenuation component (2) through control signal cables, a power module (6) is connected with the switch attenuation component (2) and the block distributor (5), and a rotary table of the electronic control rotator (7) is respectively connected with the two directional antennas which are respectively in vertical polarization and horizontal polarization.
Description
Technical field:
The utility model is relevant with radio monitoring device, and is particularly relevant with the microwave region radio monitoring device.
Background technology:
International and domestic fixed wireless power utilization monitoring device, so far all based on shortwave (3～30MHz) and ultrashort wave (USW) (30～3000MHz), the frequency range of a large amount of radio monitoring receiving equipments is no more than 3000MHz.Complicated day by day along with electromagnetic environment, more and more to the radio monitoring demand of the microwave frequency band more than the 3000MHz.
The mode that realizes the microwave frequency band radio monitoring has two kinds of direct-type and frequency conversion types.The direct-type monitoring is meant from antenna to radio monitoring receiving equipment input end, the mode that the frequency of radio signal remains unchanged; The frequency conversion type radio monitoring is meant from antenna to radio monitoring receiving equipment input end, the mode that reduces after the frequency of radio signal and a certain fixed frequency beat.
Existing frequency conversion type radio monitoring device only adopts the frequency conversion amplifier, and its dynamic range is less, and is subjected to easily producing spurious signal with the influence of outer strong signal.
The microwave wireless power utilization monitoring device that has has only vertical polarization direction finding function, no monitoring function can't carry out direction finding (because the residence time of signal in the maximum passband of its receiver has only 1.0～1.3ms) to the sweep-frequency B undesired signal of common per second scanning 30～40 times.Speed is slow, can not survey the angle of pitch, and monitoring function is few.
The utility model content:
It is big that the purpose of this utility model provides the receiving equipment dynamic range, highly sensitive, the microwave frequency band radio monitoring system that test function is many.
The utility model is achieved in that
The utility model microwave frequency band radio monitoring system, mainly by 2 secondary directional antennas 1,1 switch attenuator assembly 2,1 bandpass filter 3,1 low noise frequency conversion amplifier 4,1 every straight divider 5,1 power module 6,1 automatically controlled spinner 7,1 microcomputer 8,1 radio monitoring receiving equipment 9 is formed, 2 secondary directional antennas 1 are connected by radio-frequency cable or rf adapter with 2 rf inputs of switch attenuator assembly 2, the radio-frequency (RF) output end of switch attenuator assembly 2 is connected by radio-frequency cable or rf adapter with bandpass filter 3 input ends, the output terminal of bandpass filter 3 is connected by radio-frequency cable or rf adapter with the input end of low noise frequency conversion amplifier 4, the output terminal of low noise frequency conversion amplifier 4 be connected by radio-frequency cable or rf adapter every straight divider 5, be connected by radio-frequency cable or rf adapter with radio monitoring receiving equipment 9 every straight divider 5, microcomputer 8 and radio monitoring receiving equipment 9, automatically controlled spinner 7, switch attenuator assembly 2 links to each other by the control signal cable, power module 6 and switch attenuator assembly 2 be connected every straight divider 5, the turntable of automatically controlled commentaries on classics spigot 7 is fixedlyed connected with two directional antennas 1 of two kinds of polarization modes of level with vertical respectively.
Principle of work of the present utility model and advantage are as follows:
System's connected mode such as Fig. 1.Specifically, in the 2 secondary directional antennas 1,1 vice division chief is in horizontal polarization mode, 1 vice division chief is in the vertical polarization mode in addition, they are connected by radio-frequency cable (or rf adapter) with 2 rf inputs of switch attenuator assembly 2 respectively, the radio-frequency (RF) output end of switch attenuator assembly 2 is connected by radio-frequency cable (or rf adapter) with bandpass filter 3 input ends, the output terminal of bandpass filter 3 is connected by radio-frequency cable (or rf adapter) with the input end of low noise frequency conversion amplifier 4, the output terminal of low noise frequency conversion amplifier 4 be connected by radio-frequency cable (or rf adapter) every straight divider 5 one of them OUT mouth, be connected with the 12V output of power supply apparatus every straight divider another one OUT mouth, the positive pole of power supply connects the heart line every straight divider 50UT mouth, and negative pole connects shielding line; Connect by passing through radio-frequency cable (or rf adapter) every the IN of straight divider 5 port; Microcomputer 8 and radio monitoring receiving equipment 9, automatically controlled spinner 7, switch attenuator assembly 2 link to each other by umbilical cable.
Microcomputer 8 sends order, gauge tap decay assembly 2 and automatically controlled spinner 7, make that this device can the selection level or the antenna of vertical polarization, whether rotation in comprehensive in surface level/vertical plane certain angle, the signal that receives are tested after can also selecting to decay.
Under the control of microcomputer 8, automatically controlled spinner 7 in surface level rotation and vertical plane in rotation in the certain angle, drive is received the radio signal of different directions by switch attenuator assembly 2 those selected 1 secondary directional antennas 1, straight-through or after overdamping in the switch attenuator assembly, after again signal is given bandpass filter 3 and is carried out filtering, give low noise frequency conversion amplifier 4 after the filtering and carry out frequency conversion and amplification, then by giving the radio monitoring receiving equipment with signal, with parameters such as the frequency spectrum of test signal, intensity every straight divider 5.Through the further processing of microcomputer 8, just can measure intensity, position angle, the angle of pitch of radio signal, infer signal kinds and source location.
The utlity model has following function:
1, utilizes the radio signal of the radio monitoring receiving equipment monitoring lower frequency range of lower frequency ranges.
2, the position angle and the angle of pitch of radio signal in the test passband.
3, take into account high sensitivity and great dynamic range.
4, this device can suppress the outer strong signal of passband to producing glitch in the passband.
5, can carry out direction finding to the undesired signal of quick scanning.
In sum, the utility model test function is many, and the receiving equipment dynamic range is big, and is highly sensitive, and antijamming capability is strong.
Description of drawings:
Fig. 1 is the utility model structural drawing.
Fig. 2 is the band pass filter circuit schematic diagram.
Fig. 3 is bandpass filter structures figure.
Embodiment:
The utility model bandpass filter is to be made of direct-coupled parallel coupled line array between several TEM mould resonators.The same end of each adjacent mould resonator is all by short circuit, and the other end is through a lumped capacitance
Ground connection is the synoptic diagram that is used to analyze as Fig. 2.Fig. 2 center line 1 is to line n and adjacent with it lumped capacitance
Arrive
Constitute resonator, and line 0 and n+1 are not the mould resonators, just the part of two ends transformer section is input, the output line of wave filter, and the coupling between the mould resonator is to be obtained by the fringing field between parallel coupled line.This bandpass filter passband is 3700-4200MHz, passband and centre frequency are near 15%, select interdigital line structure on the structure for use, 11 mould resonators have been used, be contained in can the inside of a sealing, draw YA respectively and use radio-frequency cable to be connected (Fig. 2, Fig. 3) with the switch attenuator assembly with low noise frequency conversion amplifier respectively as wave filter input, output port with YB.
The directional antenna 1 that the utility model is alleged is meant that directional diagram has the antenna of obvious directivity, for example electromagnetic horn, double-ridged horn antenna, log-periodic antenna, parabola antenna.
The switch attenuator assembly 2 that the utility model is alleged is meant to have the whether electron device of selection function of radio frequency alternative function and rf attenuation.HWSAC-2-45 type switch attenuator assembly as the production of the Chengdu big microwave electron of perseverance company limited.
The bandpass filter 3 that the utility model is alleged is meant that passband is not wider than the wave filter of low noise frequency conversion amplifier 4 frequency of operation, its circuit diagram such as Fig. 2.
The low noise frequency conversion amplifier 4 that the utility model is alleged is meant that equivalent thermonoise is low, the microwave signal of the upper frequency in the certain limit can be transformed to the device of low frequency signals, and for example commercially available Japan produces the single-ended output of NJS8487SN type C-band LNB.
The utility model alleged every straight divider 5, be meant a kind of electron device with radio-frequency power distribution, unidirectional supply direct current, reverse isolation direct current, for example commercially available Xiamen is looked shellfish Science and Technology Ltd. and is produced SB-2002B type two power splitters.
The power module 6 that the utility model is alleged is meant a kind of the 220V AC power to be transformed to the direct supply device of 5V, 12V that RD-50B (5V 12V) two-way output Switching Power Supply is produced in for example commercially available Taiwan.
The automatically controlled spinner 7 that the utility model is alleged is meant the band computer interface, can carry out the device that rotates in the comprehensive and vertical plane certain angle of surface level, for example commercially available BW-Y50 type The Cloud Terrace under computer control.
The alleged radio monitoring receiving equipment 9 of the utility model is meant spectrum analyzer, perhaps the high-velocity scanning test receiver.
According to the frequency range of system needs monitoring, reasonable disposition system, the frequency range that allow directional antenna 1, switch attenuator assembly 2, bandpass filter 3, low noise frequency conversion amplifier 4, need monitor every the equal covering system of the operating frequency range of straight divider 5.Wherein bandpass filter 3 should be operated in the frequency range that needs monitoring just, and is too wide as the operating frequency range of bandpass filter 3, causes the outer strong signal of band to produce occlusion interfere and Intermodulation Interference etc. easily in low noise frequency conversion amplifier 4.
The directional antenna 1 of vertical and two kinds of polarization modes of level is installed in respectively on the turntable of automatically controlled spinner 7, sends the automatically controlled spinner 7 of instruction control by microcomputer 8 and rotate the radio signal that receives microwave region in arbitrarily angled rotation of surface level or vertical plane certain angle.The radio signal that receives is connected respectively to the vertical and horizontal polarization input port of switch attenuator assembly 2 by radio-frequency cable; Export vertically or the radio signal of horizontal polarization by microcomputer 8 gauge tap decay assembly 2, and can select whether signal attenuation to be exported by microcomputer 8 controls.The signal of output is connected to the input port of bandpass filter 3 by radio-frequency cable, and out-of-band-signal is filtered, and effectively avoids with the interference of outer strong signal to inband signaling.Carry out filtered signal and be connected by the input end of radio-frequency cable with low noise frequency conversion amplifier 4 from the delivery outlet of bandpass filter 3, low noise frequency conversion amplifier 4 will be transformed to low frequency from high-frequency to signal, and signal is amplified output.Signal after frequency conversion is amplified uses radio-frequency cable to be connected to every straight divider input port 5 by low noise frequency conversion amplifier 4 output ports, by giving radio monitoring receiving equipment 9 from delivery outlet with radio-frequency cable with signal every straight divider 5, connect the 12V direct supply every straight divider 5 another one delivery outlets, provide direct supply to low noise frequency conversion amplifier 4.Power supply apparatus 6 mainly is to provide two groups of direct supplys (as 5V/200mA and 12V/200mA) respectively to switch attenuator assembly 2 and low noise frequency conversion amplifier 4.
5 kinds of functions of the present utility model are achieved in that
1, utilizes the radio signal of the radio monitoring receiving equipment monitoring lower frequency range of lower frequency ranges.With f
RFThe frequency input signal of expression LNB, f
LRepresent its local frequency, f
RXRepresent its output signal frequency.(1) when adopting down coversion mode (C-band is commonly used), the relation between them is:
f
RX＝f
L-f
RF
With C-band NJS8487SN type LNB (Japan produces) is example, f
L=5.15GHz, f
RX=3.625～4.2GHz,
F then
RX=0.95～1.525GHz
Thereby the frequency range of radiofrequency signal is become 0.95～1.525GHz by 3.625～4.2GHz, make it to be tested by the radio monitoring receiving equipment below the 3GHz.
(2) when adopting up-conversion mode (the Ku wave band is commonly used)
f
RX＝f
RF-f
L
With Ku wave band PLK-900 type local oscillator is that 11.3GHz LNB (U.S.'s product) is an example, f
L=11.3GHz, f
RX=12.25～12.75GHz, then f
RX=0.95～1.45GHz.
With Ku wave band PLK-900 type local oscillator is that 0.975GHzLNB (U.S.'s product) is an example, f
L=0.975GHz, f
RX=11.25～12.25GHz, then f
RX=1.5～2.5GHz.
Thereby the frequency range of radiofrequency signal is become 0.95～2.5GHz by 10.7～11.8, make it to be tested by the radio monitoring receiving equipment below the 3GHz.
2, the position angle and the angle of pitch of radio signal in the test passband.
During the test beginning, microcomputer 8 is at first selected the antenna of a kind of polarization mode (horizontal polarization or vertical polarization), control automatically controlled spinner 7 and carry out the surface level rotation, in the test process, whether decision opens the attenuator in the switch attenuator assembly 2 according to radio monitoring receiving equipment 9 measured signal intensity, in the antenna rotating process, Yi Bian microcomputer 8 writes down antenna institute azimuthal, the frequency spectrum data (comprising frequency and intensity) of tracer signal encloses at signal extended period build-in test one on one side; Then, microcomputer 8 is selected the antenna of another kind of polarization mode (vertical polarization or horizontal polarization), with same step test one circle.When radio signal occurs,, just can judge the polarization mode of the radio signal of paying close attention to, and calculate its position angle as long as after above-mentioned two circles of test, undertaken calculating than the width of cloth by microcomputer 8.
Select and the antenna of judging that polarization mode is identical, the position angle that is calculating, the automatically controlled spinner 7 of microcomputer 8 controls carries out vertical plane and rotates, whether decision opens the attenuator in the switch attenuator assembly 2 according to radio monitoring receiving equipment 9 measured signal intensity, in the antenna rotating process, microcomputer 8 writes down antenna institute azimuthal on one side, the frequency spectrum data (comprising frequency and intensity) of one side tracer signal, undertaken calculating by microcomputer 8, just can judge the angle of pitch of the radio signal of paying close attention to than the width of cloth.
3, take into account high sensitivity and great dynamic range.
Low noise frequency conversion amplifier 4 has been arranged in the system, and sensitivity increases greatly.But the dynamic range of low noise frequency conversion amplifier 4 is smaller, and input signal will cause saturated slightly greatly.
And electric-controlled switch decay assembly 2 has been arranged in the system, just solved the little problem of dynamic range well.Attenuator in the electric-controlled switch decay assembly 2, can insert, also can not insert (promptly straight-through), determine according to radio monitoring receiving equipment 9 measured signal intensity by microcomputer 8, thereby the dynamic range of system is increased, and the amount of increase is the poor of attenuator damping capacity and straight-through insertion loss.
4, this device can suppress the outer strong signal of passband to producing glitch in the passband.
General low noise frequency conversion amplifier 4, its enlarging function is not suddenly to end outside operating frequency range, if there is not bandpass filter 3, just may cause the outer strong signal of band may produce occlusion interfere and Intermodulation Interference etc. in low noise frequency conversion amplifier 4.For example, when the C-band monitoring system need be in high sensitivity state (not inserting attenuator in the switch attenuator assembly 2), the strong signal of 3.5GHz near can enter and produce glitch in low noise frequency conversion amplifier 4 passbands.
The introducing of bandpass filter 3 has just solved this problem well.
5, can carry out direction finding to the undesired signal of quick scanning.
With common quick scanning C-band jammer signal is example, this kind signal per second in 3.7～4.2GHz frequency range scans 30～40 times, after low noise frequency conversion amplifier 4 frequency conversions in the utility model, the undesired signal frequency becomes 0.95～1.45GHz, with general spectrum analyzer and high-velocity scanning test receiver, per second scanning can be not less than 10 times, and is then every all over can capturing 3～4 spectral lines, thereby can measure the intensity of undesired signal.
Claims (2)
1. microwave frequency band radio monitoring system, it is characterized in that mainly by 2 secondary directional antennas (1), 1 switch attenuator assembly (2), 1 bandpass filter (3), 1 low noise frequency conversion amplifier (4), 1 every straight divider (5), 1 power module (6), 1 automatically controlled spinner (7), 1 microcomputer (8), 1 radio monitoring receiving equipment (9) is formed, 2 secondary directional antennas (1) are connected by radio-frequency cable or rf adapter with 2 rf inputs of switch attenuator assembly (2), the radio-frequency (RF) output end of switch attenuator assembly (2) is connected by radio-frequency cable or rf adapter with bandpass filter (3) input end, the output terminal of bandpass filter (3) is connected by radio-frequency cable or rf adapter with the input end of low noise frequency conversion amplifier (4), the output terminal of low noise frequency conversion amplifier (4) be connected by radio-frequency cable or rf adapter every straight divider (5), be connected by radio-frequency cable or rf adapter with radio monitoring receiving equipment (9) every straight divider (5), microcomputer (8) and radio monitoring receiving equipment (9), automatically controlled spinner (7), switch attenuator assembly (2) links to each other by the control signal cable, power module (6) and switch attenuator assembly (2) be connected every straight divider (5), the turntable of automatically controlled commentaries on classics spigot (7) is fixedlyed connected with two directional antennas (1) of two kinds of polarization modes of level with vertical respectively.
2. system according to claim 1 is characterized in that bandpass filter (3) is made of the n that is arranged in can the direct-coupled parallel coupled line of mould resonator (1-n) array, the same end ground connection of adjacent mould resonator, and the other end is through lumped capacitance C
s jGround connection, parallel coupled line (1-n) and Neighbor Set total capacitance
Constitute resonator, 0 line at resonator two ends and n+1 line are drawn input port YA in the can and are connected with low noise frequency conversion amplifier (4) with switch attenuator assembly (2) respectively with output port YB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202146306U CN201716377U (en) | 2010-06-03 | 2010-06-03 | Microwave frequency band radio monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202146306U CN201716377U (en) | 2010-06-03 | 2010-06-03 | Microwave frequency band radio monitoring system |
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| CN201716377U true CN201716377U (en) | 2011-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202146306U Expired - Fee Related CN201716377U (en) | 2010-06-03 | 2010-06-03 | Microwave frequency band radio monitoring system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336180A (en) * | 2013-05-31 | 2013-10-02 | 成都点阵科技有限公司 | Antenna identification method applicable to portable radio monitoring one-body machine |
| CN103592478A (en) * | 2012-08-17 | 2014-02-19 | 鸿富锦精密工业（深圳）有限公司 | Radiation signal source |
| CN103812577A (en) * | 2012-11-06 | 2014-05-21 | 西南交通大学 | Method for automatically identifying and learning abnormal radio signal type |
| CN106025487A (en) * | 2016-05-06 | 2016-10-12 | 西安恒达微波技术开发有限公司 | Direction finding antenna and direction finding antenna system applying same |
-
2010
- 2010-06-03 CN CN2010202146306U patent/CN201716377U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592478A (en) * | 2012-08-17 | 2014-02-19 | 鸿富锦精密工业（深圳）有限公司 | Radiation signal source |
| CN103812577A (en) * | 2012-11-06 | 2014-05-21 | 西南交通大学 | Method for automatically identifying and learning abnormal radio signal type |
| CN103812577B (en) * | 2012-11-06 | 2017-10-13 | 西南交通大学 | The automatic recognition system and its method of improper radio signal |
| CN103336180A (en) * | 2013-05-31 | 2013-10-02 | 成都点阵科技有限公司 | Antenna identification method applicable to portable radio monitoring one-body machine |
| CN103336180B (en) * | 2013-05-31 | 2015-08-26 | 成都点阵科技有限公司 | A kind of method being applicable to portable mobile wireless pyroelectric monitor all-in-one identification antenna |
| CN106025487A (en) * | 2016-05-06 | 2016-10-12 | 西安恒达微波技术开发有限公司 | Direction finding antenna and direction finding antenna system applying same |
| CN106025487B (en) * | 2016-05-06 | 2019-03-26 | 西安恒达微波技术开发有限公司 | A kind of direction-finder antenna and DF antenna system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110119 Termination date: 20170603 |