CN204652378U - A kind of microwave receiver - Google Patents
A kind of microwave receiver Download PDFInfo
- Publication number
- CN204652378U CN204652378U CN201520351727.4U CN201520351727U CN204652378U CN 204652378 U CN204652378 U CN 204652378U CN 201520351727 U CN201520351727 U CN 201520351727U CN 204652378 U CN204652378 U CN 204652378U
- Authority
- CN
- China
- Prior art keywords
- unit
- output
- connects
- input
- 3ghz
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a kind of microwave receiver, comprise aerial signal input, 3GHz-6GHz converter unit, 20MHz-3GHz converter unit and digital processing terminal, the input port of described aerial signal input connects antenna switching unit, the output of described antenna switching unit connects RF switching unit, the output of described RF switching unit connects 20MHz-3GHz converter unit, portable wireless monitoring system and network type monitoring system can be formed together with omnidirectional antenna, be suitable for the monitoring in outdoor signal source, realize radio monitoring various functions; Be combined with Background control terminal, radio monitoring can be formed and fix station or mobile station, provide in-plant signal monitoring and detection in the building that can be implemented in whole city or specific region, safeguard airwaves order.
Description
Technical field
The technical field of the interconnected communication between the thing that the utility model relates to sensing technology, the network communications technology realizes and thing, particularly relates to a kind of microwave receiver.
Background technology
Microwave receiver is the faint microwave signal that will receive, and amplifies it through low noise amplifier, then amplifies and the link of filtering through mixing, intermediate frequency, finally exports to load.Traditional microwave note handset structure is complicated, receives microwave signal sensitivity low, also there is the defects such as antijamming capability is low.
Internet of Things is the interconnected communication between thing and thing utilizing sensing technology, the network communications technology to realize, identify and manage to facilitate and a series of application produced on this basis, for ensureing that Internet of Things steadily develops fast, radio control department will take resolute measures, from station devices management, safeguard that the many-sides such as radio wave order make positive effort, conscientiously carry out management of spectrum use and the supervision of radio electromagnetsm environment of every Internet of Things new business.The frequency that will use every Internet of Things new business, the frequency range at place, electromagnetic environment compatibility etc. makes strict supervision; The daily monitoring of Internet of Things frequency range will be carried out with all strength, the various frequency use condition of this frequency range of energy monitoring analysis and signal source, interference source can be found out rapidly and accurately in interference signal is searched, for investigating the guarantee that various radio interference provides strong in time efficiently, thus safeguard the electric wave order of Internet of Things frequency range.
Public mobile communication technology by 2G to 3G, again to LTE and 4G technological evolvement, Internet of Things and the wireless telecommunications frequency space required for Sensor Network are also in continuous expansion, such as current operating frequency is in the WiFi technology of about 5GHz and intelligent transportation electric non-stop toll (ETC) technology, operating frequency, at about 5.8GHz, has risen to the new demand in the entire spectrum space of 6GHz and Geng Gao to the operating frequency range of electromagnetic signal monitoring.Wireless electromagnetic environment is increasingly sophisticated, and radio wave multipath and shadow effect are day by day serious, and wireless installation situation allows of no optimist, and has higher requirement to the safety assurance ability of radio control and safeguard technology means.Therefore monitor and manage very urgent to the radio-frequency spectrum in region, the development of frequency microwave spectrum monitoring equipment has wide prospect.The TMS Serial monitoring system that the E3238S/ blackbird N6820E signal tour gauging system that Agilent company of the U.S. produces, German Luo De and Schwarz R/S company produce, PR100, ESMI monitoring receiver, though performance is good, prices are rather stiff! For commercial object, they, to the equipment of outlet, add a lot of dispensable function, and price also increases a lot thereupon, and lure that user is technology upgrading in the future continuous " footing the bill " into.Radio control technical equipment in addition relates to a large amount of core datas such as wireless device technical parameter, deployed position, if use import radio control equipment, there is huge potential safety hazard, very easily cause secret leaking, the lighter causes economical impaired, crucial moment is under one's control, severe one serious threat national security.
Utility model content
The purpose of this utility model is the problem solving above-mentioned proposition, provides a kind of Larger Dynamic microwave mixer technology and isolation is good, ensures a kind of microwave receiver that intermediate frequency suppresses.
The technical scheme realizing the utility model object is: a kind of microwave receiver, comprise aerial signal input, 3GHz-6GHz converter unit, 20MHz-3GHz converter unit and digital processing terminal, the input port of described aerial signal input connects antenna switching unit, the output of described antenna switching unit connects RF switching unit, and the output of described RF switching unit connects 20MHz-3GHz converter unit.
Further prioritization scheme is, above-mentioned a kind of microwave receiver, described 3GHz-6GHz converter unit comprises wave band switch unit, filter and amplification unit, low-loss microwave mixing unit, the second filter and amplification unit, wave band switch unit, the output of described wave band switch unit connects the input of filter and amplification unit, the output of described low-loss microwave mixing unit connects the input of the second filter and amplification unit, and the output of described second filter and amplification unit connects wave band switch unit.
Further prioritization scheme is, above-mentioned a kind of microwave receiver, described 20MHz-3GHz converter unit comprises high the putting in unit, the first frequency conversion, first of input and puts, puts in the second frequency conversion, second, the high output putting unit of described input is connected with the input of the first frequency conversion, the output of described first frequency conversion is connected with the second frequency conversion by the input put in first, and the output of described second frequency conversion connects in second puts connection.
Further prioritization scheme is, above-mentioned a kind of microwave receiver, also comprise the first local oscillator, controller and the second local oscillator, the output of described controller connects the first local oscillator and the second local oscillator respectively, the output of described second local oscillator connects the second frequency conversion, and the output of described first local oscillator connects the first frequency conversion.
Further prioritization scheme is, above-mentioned a kind of microwave receiver, described digital processing terminal comprises broadband and adopts A/D unit, FPGA and control interface unit, numeral DSP unit and network control unit, described broadband adopts the output of A/D unit to be connected with the input of digital DSP unit by FPGA and control interface unit, the signal received is separately converted to audio frequency and exports by described digital DSP unit, digital intermediate frequency and frequency spectrum display, the input interconnection network interface of described network control unit, its output connects the input of FPGA and control interface unit.
Further prioritization scheme is, above-mentioned a kind of microwave receiver, puts employing two stage filter in described first, and one step gain controls, and controlled quentity controlled variable is 31.5dB.
Further prioritization scheme is, above-mentioned a kind of microwave receiver, and put in described second and adopt third gear switch bank of filters, each flap is wide is respectively 4MHz, 8MHz, 32MHz, and one step gain controls, and controlled quentity controlled variable is 31.5dB.
The utility model has positive effect: (1) this microwave receiver relies on the frequency coverage width of its 20MHz to 6GHz and bandwidth to be the optional 70MHz intermediate frequency output of 4MHz, 8MHz, 36MHz, portable wireless monitoring system and network type monitoring system can be formed together with omnidirectional antenna, be suitable for the monitoring in outdoor signal source, realize radio monitoring various functions; Be combined with Background control terminal, radio monitoring can be formed and fix station or mobile station, provide in-plant signal monitoring and detection in the building that can be implemented in whole city or specific region, safeguard airwaves order.Its major function is tested and data acquisition electromagnetic environment, grasp various radio traffic and communication system, the particularly new business such as broadband wireless access, Internet of Things background noise frequently and frequency use condition, the characteristic parameters such as frequency of utilization, transmitting power, antenna gain, modulation type, occupied bandwidth, channel load and degree are measured, and finally determine the relevant feature parameters value of the radio signal be monitored to, serve dynamic spectrum resource management.
(2) microwave frequency band of the present utility model adopts low-loss microwave mixing schemes to carry out frequency translation, enormously simplify conventional microwave signal receiving circuit.Next have employed the frequency mixing technique method that superhet combines with super interpolation.Produce high and low two local oscillators by frequency synthesizer, form an a high intermediate frequency F1 and low intermediate frequency F2, respectively with high two local oscillators and low two local oscillator phase mixing, the intermediate frequency producing a 70MHz exports.Larger Dynamic microwave mixer technology, isolation is good, ensure that intermediate frequency suppresses and image frequency suppresses index
(3) DSP+FPGA Digital Signal Processing is adopted, simplify the circuit structure of digital processing terminal, realize wideband sampling, the demodulation of signal of several working ways (AM, FM, USB, LSB and CW), the digital intermediate frequency filtering of various bandwidth, high-velocity scanning, propose simultaneously and use network chip to realize the procotols such as TCP/IP in hardware to realize the function of Ethernet.Applying this network chip can load completely needed for offloading network agreement
(4) modularized design topology layout is reasonable, and unit structural form is simple and clear, and dismounting is fast easy to maintenance.
Accompanying drawing explanation
In order to make content of the present utility model more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 is structural representation of the present utility model;
Reference numeral: 1, aerial signal input, 2, 3GHz-6GHz converter unit, 3, 20MHz-3GHz converter unit, 4, digital processing terminal, 5, antenna switching unit, 6, RF switching unit, 7, wave band switch unit, 8, filter and amplification unit, 9, low-loss microwave mixing unit, 10, second filter and amplification unit, 11, wave band switch unit, 12, input and highly put unit, 13, first frequency conversion, 14, put in first, 15, second frequency conversion, 16, put in second, 17, first local oscillator, 18, controller, 19, second local oscillator, 20, numeral DSP unit, 21, network control unit, 22, broadband adopts A/D unit, 23, FPGA and control interface unit.
Embodiment
As shown in Figure 1, the utility model has a kind of microwave receiver, comprise aerial signal input 1,3GHz-6GHz converter unit 2,20MHz-3GHz converter unit 3 and digital processing terminal 4, the input port of described aerial signal input 1 connects antenna switching unit 5, the output of described antenna switching unit 5 connects RF switching unit 6, and the output of described RF switching unit 6 connects 20MHz-3GHz converter unit 3.Described 3GHz-6GHz converter unit 2 comprises wave band switch unit 7, filter and amplification unit 8, low-loss microwave mixing unit 9, second filter and amplification unit 10, wave band switch unit 11, the output of described wave band switch unit 7 connects the input of filter and amplification unit 8, the output of described low-loss microwave mixing unit 9 connects the input of the second filter and amplification unit 10, and the output of described second filter and amplification unit 10 connects wave band switch unit 11.Described 20MHz-3GHz converter unit 3 comprise input high put in unit 12, first frequency conversion 13, first to put in the 14, second frequency conversion 15, second put 16, the high output putting unit 12 of described input is connected with the input of the first frequency conversion 13, the output of described first frequency conversion 13 is connected with the second frequency conversion 15 by the input putting 14 in first, and the output of described second frequency conversion 15 connects in second puts 16 connections.Also comprise the first local oscillator 17, controller 18 and the second local oscillator 19, the output of described controller 18 connects the first local oscillator 17 and the second local oscillator 19 respectively, the output of described second local oscillator 19 connects the second frequency conversion 15, and the output of described first local oscillator 17 connects the first frequency conversion 13.Put 14 employing two stage filters in described first, one step gain controls, and controlled quentity controlled variable is 31.5dB.Put 16 employing third gear switch bank of filters in described second, each flap is wide is respectively 4MHz, 8MHz, 32MHz, and one step gain controls, and controlled quentity controlled variable is 31.5dB.
Described digital processing terminal 4 comprises broadband and adopts A/D unit 22, FPGA and control interface unit 23, digital DSP unit 20 and network control unit 21, described broadband adopts the output of A/D unit 22 to be connected with the input of digital DSP unit 20 by FPGA and control interface unit 23, the signal received is separately converted to audio frequency output, digital intermediate frequency and frequency spectrum display by described digital DSP unit 20, the input interconnection network interface of described network control unit 21, its output connects the input of FPGA and control interface unit 23.
Its course of work is: as shown in Figure 1,3GHz-6GHz frequency range microwave signal enters filter and amplification unit 8, low-loss microwave mixing unit 9, second filter and amplification unit 10, wave band switch unit 11 by antenna input signal through antenna change-over switch, and the signal after frequency conversion enters the aerial signal input 1 of 3GHz frequency range; 3GHz frequency band signals is entered by antenna, through front-end filtering, the first frequency conversion 13, produces the first intermediate-freuqncy signal, in first, put 14 enter two mixing and carry out second time frequency conversion, through filtering, amplification and AGC etc., produce 70MHz bis-intermediate frequency, be supplied to digital processing terminal.First local oscillator 17 primary responsibility produces the local oscillation signal in receive frequency range, and the second local oscillator 19 is responsible for producing the local oscillation signal corresponding with the first IF spot.70MHz bis-intermediate frequency of digital processing terminal 4 to input is sampled and corresponding digitized processing, completes the functions such as audio frequency output, frequency spectrum display, sends the data after process to control section simultaneously.Control section is responsible for the control of each circuit part of receiver, AGC.
Consider the difference of signal power and the anti-interference problem to the strong signal of input, adopt straight-through and decay tandem working pattern in prime input, controlled by controllable attenuator, attenuation range 0 ~ 30dB.The form that electrically tunable filter combines with band pass filter is adopted in full frequency band.After the filtering, for guaranteeing that the input of machine sensitivity unaffected design one-level is highly put, carry out once specific 3500MHz low-pass filtering after amplification again, and then carry out a mixing with anti-in guaranteeing, as anti-and local-oscillator leakage index.Due to comparatively large through mixed signal loss, then carry out one-level amplification, then enter filtering and the amplification of an intermediate frequency through attenuator.For outside the scope that its frequency range the first local oscillation signal should cover at Received signal strength, the interference of bringing into for suppressing local oscillator and noise, on the impact of a mixting circuit, carry out high-pass filtering and amplification before mixing to the first local oscillation signal.First intermediate-freuqncy signal through filtering, amplification, gain control to the second frequency mixer, the second intermediate-freuqncy signal through filtering, amplification and AGC to 70MHz intermediate frequency output circuit.Wherein the first intermediate frequency filtering adopts two stage filter, and one step gain controls, and controlled quentity controlled variable is 31.5dB, and two intermediate frequency filterings adopt 3 gear switch bank of filters, and each flap is wide is respectively 4MHz, 8MHz, 32MHz, and one step gain controls, and controlled quentity controlled variable is 31.5dB.The whole channel gain of such expectation is 63dB, and overall gain controlled quentity controlled variable is 93dB; Radio frequency controlled quentity controlled variable 30dB, intermediate frequency controlled quentity controlled variable is 63dB.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (7)
1. a microwave receiver, it is characterized in that: comprise aerial signal input (1), 3GHz-6GHz converter unit (2), 20MHz-3GHz converter unit (3) and digital processing terminal (4), the input port of described aerial signal input (1) connects antenna switching unit (5), the output of described antenna switching unit (5) connects RF switching unit (6), and the output of described RF switching unit (6) connects 20MHz-3GHz converter unit (3).
2. a kind of microwave receiver according to claim 1, it is characterized in that: described 3GHz-6GHz converter unit (2) comprises wave band switch unit (7), filter and amplification unit (8), low-loss microwave mixing unit (9), second filter and amplification unit (10), wave band switch unit (11), the output of described wave band switch unit (7) connects the input of filter and amplification unit (8), the output of described low-loss microwave mixing unit (9) connects the input of the second filter and amplification unit (10), the output of described second filter and amplification unit (10) connects wave band switch unit (11).
3. a kind of microwave receiver according to claim 1, it is characterized in that: described 20MHz-3GHz converter unit (3) comprises input and highly puts unit (12), first frequency conversion (13), put in first (14), second frequency conversion (15), put in second (16), the high output putting unit (12) of described input is connected with the input of the first frequency conversion (13), the output of described first frequency conversion (13) is connected with the second frequency conversion (15) by the input putting (14) in first, the output of described second frequency conversion (15) connects in second puts (16) connection.
4. a kind of microwave receiver according to claim 3, it is characterized in that: also comprise the first local oscillator (17), controller (18) and the second local oscillator (19), the output of described controller (18) connects the first local oscillator (17) and the second local oscillator (19) respectively, the output of described second local oscillator (19) connects the second frequency conversion (15), and the output of described first local oscillator (17) connects the first frequency conversion (13).
5. a kind of microwave receiver according to claim 3, is characterized in that: put (14) in described first and adopt two stage filter, one step gain controls, and controlled quentity controlled variable is 31.5dB.
6. a kind of microwave receiver according to claim 3, is characterized in that: put (16) in described second and adopt third gear switch bank of filters, each flap is wide is respectively 4MHz, 8MHz, 32MHz, and one step gain controls, and controlled quentity controlled variable is 31.5dB.
7. a kind of microwave receiver according to claim 1, it is characterized in that: described digital processing terminal (4) comprises broadband and adopts A/D unit (22), FPGA and control interface unit (23), numeral DSP unit (20) and network control unit (21), described broadband adopts the output of A/D unit (22) to be connected with the input of digital DSP unit (20) by FPGA and control interface unit (23), the signal received is separately converted to audio frequency and exports by described digital DSP unit (20), digital intermediate frequency and frequency spectrum display, the input interconnection network interface of described network control unit (21), its output connects the input of FPGA and control interface unit (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520351727.4U CN204652378U (en) | 2015-05-27 | 2015-05-27 | A kind of microwave receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520351727.4U CN204652378U (en) | 2015-05-27 | 2015-05-27 | A kind of microwave receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204652378U true CN204652378U (en) | 2015-09-16 |
Family
ID=54105085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520351727.4U Expired - Fee Related CN204652378U (en) | 2015-05-27 | 2015-05-27 | A kind of microwave receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204652378U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109328441A (en) * | 2016-06-21 | 2019-02-12 | 阿尔卡特朗讯 | The base station of multicarrier and protenchyma networking signals is supported in test |
-
2015
- 2015-05-27 CN CN201520351727.4U patent/CN204652378U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109328441A (en) * | 2016-06-21 | 2019-02-12 | 阿尔卡特朗讯 | The base station of multicarrier and protenchyma networking signals is supported in test |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102377495B (en) | Radio frequency detection method, Apparatus and system | |
| CN101788582B (en) | Interference suppression method and device for local discharge detection of equipment | |
| CN104967494A (en) | Test method, test device and test system | |
| CN103607215B (en) | A kind of apparatus and method realizing spectrum analyzer spread spectrum function | |
| De Francisco et al. | Spectrum occupancy in the 2.36–2.4 GHz band: Measurements and analysis | |
| CN103152114A (en) | Mobile coordinated radio monitoring method | |
| CN101938306B (en) | Inhibition method of uplink base noise of GSM (Global System for Mobile Communication) digital optical fiber repeater station | |
| CN110267293A (en) | A kind of communication unit simulation detection system | |
| CN106443122A (en) | Broadband large dynamic signal high-precision measurement device and method | |
| CN105656568B (en) | The method and apparatus for searching interference of the high ferro wireless electromagnetic environment to GSM R | |
| CN104469786B (en) | A kind of LTE and WIFI cobasis station Interference Suppression System and method | |
| Mirzavand et al. | Five-port microwave receiver architectures and applications | |
| CN204652378U (en) | A kind of microwave receiver | |
| CN202269021U (en) | Multi-system access platform for airport communication | |
| CN204733174U (en) | A kind of frequency domain blocking type wireless signal occluding device | |
| CN203942528U (en) | A kind of wireless coverage strengthens equipment | |
| CN104703194A (en) | Indoor distribution system and realizing method thereof | |
| CN101283293B (en) | Lightning detection | |
| CN103634024B (en) | A kind of apparatus and method realizing signal analysis instrument spread spectrum function | |
| CN203504258U (en) | Wireless-carrier wave dual-network complementation charging pile for common community | |
| Shan et al. | Laboratory assessment of WLAN performance degradation in the presence of impulsive noise | |
| Qing-ping et al. | Design of a network receiver for 20MHz to 3GHz ultra-short wave spectrum monitoring | |
| Hansen | Review of EMC main aspects in fast PLC including some history | |
| CN103997300B (en) | Microwave mixer | |
| CN212343768U (en) | Relay device of 230MHz wireless data transmission radio station |
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: 20150916 Termination date: 20180527 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |