CN106357282A - High-sensitivity microwave receiver - Google Patents

Abstract

The invention provides a high-sensitivity microwave receiver. The high-sensitivity microwave receiver comprises an antenna signal input end, a 3GHz-6GHz frequency conversion unit, a 20MHz-3GHz frequency conversion unit and a digital processing terminal, wherein an input port of the antenna signal input end is connected with an antenna switching unit, an output end of the antenna switching unit is connected with a radio frequency switch unit, an output end of the radio frequency switch unit is connected with the 20MHz-3GHz frequency conversion unit, and the multichannel microwave digital receiver and an omnidirectional antenna can form a portable radio monitoring system and a network type monitoring system which are suitable for monitoring an outdoor signal source and can realize various functions of radio monitoring; the multichannel microwave digital receiver cooperates with a background control terminal for use, a radio monitoring fixed station or a mobile station can be formed, short-distance signal monitoring and detection of buildings in the whole city or in a specific area can be realized, and the order of radio waves in the air is maintained.

Description

A kind of high sensitivity microwave receiver

Technical field

Present invention relates particularly to a kind of high sensitivity microwave receiver.

Background technology

High sensitivity microwave receiver is by the faint microwave signal receiving, and through low-noise amplifier, it is put Greatly, then through mixing, intermediate frequency the link amplified and filter, final output gives load.Traditional microwave note handset structure is complicated, connects Receive microwave signal sensitivity low, also there is the low defect of capacity of resisting disturbance；So be badly in need of a kind of high sensitivity microwave receiver with Solve this problem.

Content of the invention

Present invention aims to the deficiencies in the prior art, provide a kind of high sensitivity microwave receiver, this Gao Ling Sensitivity microwave receiver can solve the above problems well.

For reaching above-mentioned requirements, the present invention adopts the technical scheme that: provides a kind of high sensitivity microwave receiver, this height Sensitivity microwave receiver includes aerial signal input, 3ghz-6ghz converter unit, 20mhz-3ghz converter unit and numeral Processing terminal, the input port of described aerial signal input connects antenna switching unit, the output of described antenna switching unit End connects RF switching unit, and the outfan of described RF switching unit connects 20mhz-3ghz converter unit；Described 3ghz- 6ghz converter unit includes wave band switch unit, filter and amplification unit, low-loss microwave mixing unit, the second filter and amplification list Unit, wave band switch unit, the outfan of described wave band switch unit connects the input of filter and amplification unit, and described low-loss is micro- The outfan of wave mixing unit connects the input of the second filter and amplification unit, and the outfan of described second filter and amplification unit is even Connect wave band switch unit；Digital processing terminal is electrically connected with digital information safety processing system, and described digital information safety is processed System includes: safety control module and secure processing module, both two-way communications, wherein, safety control module be pc machine and/or One of server, safety control module is responsible for controlling many ca to control Entitlement Control Message with close, generation control word cw, management Ecm and Entitlement Management Message emm, generation or receive drm encryption key, control digital information carried out the mode of safe handling with And control secure processing module that digital information is carried out with safe handling, digital information safety processing system and information delivery apparatus electricity Connect, described information distributing device includes receiver enclosure, is provided with microcontroller and electric supply installation in receiver enclosure, power supply Device is electrically connected with solar panel, and described microcontroller is connected with cloud backup of memory signal, cloud backup of memory with should The electrical connection of anxious back-up device, described emergency backup device electrically connects with power-off alarm, described power-off alarm and described micro-control Device signal processed connects.

This high sensitivity microwave receiver has the advantage that as follows: enters line frequency using low-loss microwave mixing schemes and removes Move, enormously simplify conventional microwave signal receiving circuit.Next employs the frequency mixing technique side that superhet is combined with super internal difference Method.High and low two local oscillators are produced by frequency synthesizer, form an a high intermediate frequency f1 and low intermediate frequency f2, respectively with High two local oscillators are mutually mixed with low two local oscillators, produce the intermediate frequency output of a 70mhz.Larger Dynamic microwave mixer technology, isolation Well it is ensured that intermediate frequency suppression and image frequency suppress index.

Brief description

Accompanying drawing described herein is used for providing further understanding of the present application, constitutes the part of the application, at this Represent same or analogous part, the schematic description and description of the application using identical reference number in a little accompanying drawings For explaining the application, do not constitute the improper restriction to the application.In the accompanying drawings:

Fig. 1 schematically shows the structural representation of the high sensitivity microwave receiver according to one embodiment of the application Figure.

Fig. 2 schematically shows the digital information peace of the high sensitivity microwave receiver according to one embodiment of the application The structural representation of full processing system.

The information that Fig. 3 schematically shows the high sensitivity microwave receiver according to one embodiment of the application issues dress The structural representation put.

Wherein: 1, aerial signal input, 2,3ghz-6ghz converter unit, 3,20mhz-3ghz converter unit, 4, numeral Processing terminal, 5, antenna switching unit, 6, RF switching unit, 7, wave band switch unit, 8, filter and amplification unit, 9, low-loss Microwave mixer unit, the 10, second filter and amplification unit, 11, wave band switch unit, 12, input height put unit, the 13, first frequency conversion, 14th, put in first, the 15, second frequency conversion, put in 16, second, the 17, first local oscillator, 18, controller, the 19, second local oscillator, 20, numeral Dsp unit, 21, network control unit, 22, broadband adopt a/d unit, 23, fpga and control interface unit.

Specific embodiment

Purpose, technical scheme and advantage for making the application are clearer, below in conjunction with drawings and the specific embodiments, to this Application is described in further detail.

In the following description, quoting of " embodiment ", " embodiment ", " example ", " example " etc. is shown So the embodiment of description or example can include special characteristic, structure, characteristic, property, element or limit, but not each is real Apply example or example all necessarily includes special characteristic, structure, characteristic, property, element or limit.In addition, reuse phrase " according to One embodiment of the application " is although it is possible to refer to identical embodiment, but is not necessarily referring to identical embodiment.

For the sake of simplicity, eliminate in below describing well known to a person skilled in the art some technical characteristics.

According to an embodiment of the application, provide a kind of high sensitivity microwave receiver, as Figure 1-3, including sky Line signal input part 1,3ghz-6ghz converter unit 2,20mhz-3ghz converter unit 3 sum word processing terminal 4, described antenna The input port of signal input part 1 connects antenna switching unit 5, and the outfan of described antenna switching unit 5 connects radio-frequency (RF) switch Unit 6, the outfan of described RF switching unit 6 connects 20mhz-3ghz converter unit 3；Described 3ghz-6ghz converter unit 2 Cut including wave band switch unit 7, filter and amplification unit 8, low-loss microwave mixing unit 9, the second filter and amplification unit 10, wave band Change unit 11, the outfan of described wave band switch unit 7 connects the input of filter and amplification unit 8, described low-loss microwave mixes The outfan of frequency unit 9 connects the input of the second filter and amplification unit 10, the outfan of described second filter and amplification unit 10 Connect wave band switch unit 11, electric supply installation is electrically connected with solar panel, described microcontroller is believed with cloud backup of memory Number connect, cloud backup of memory electrically connected with emergency backup device, and described emergency backup device is electrically connected with power-off alarm, institute State power-off alarm to be connected with described microcontroller signal.

According to an embodiment of the application, the digital processing terminal of this high sensitivity microwave receiver is pacified with digital information Full processing system electrical connection, described digital information safety processing system includes: safety control module and secure processing module, both Two-way communication, wherein, safety control module is one of pc machine and/or server, and safety control module is responsible for controlling many ca Control Entitlement Control Message ecm and Entitlement Management Message emm, generation with close, generation control word cw, management or receive drm encryption Key, control carry out the mode of safe handling and control secure processing module to carry out safe place to digital information to digital information Reason, digital information safety processing system is electrically connected with information delivery apparatus, and described information distributing device includes receiver enclosure, connects In receipts machine casing, microcontroller and electric supply installation are installed.

According to an embodiment of the application, the 20mhz-3ghz converter unit 3 of this high sensitivity microwave receiver includes Input height is put unit 12, is put in the first frequency conversion 13, first and put 16 in 14, second frequency conversion 15, second, and described input height puts unit 12 Outfan be connected with the input of the first frequency conversion 13, the outfan of described first frequency conversion 13 passes through to put 14 input in first It is connected with the second frequency conversion 15, the outfan of described second frequency conversion 15 connects in second puts 16 connections.

According to an embodiment of the application, the digital processing terminal 4 of this high sensitivity microwave receiver includes broadband and adopts With a/d unit 22, fpga and control interface unit 23, digital dsp unit 20 and network control unit 21, described broadband adopts a/ The outfan of d unit 22 is passed through fpga and control interface unit 23 and is connected with the input of digital dsp unit 20.

Embodiment described above only represents the several embodiments of the present invention, and its description is more concrete and detailed, but not It is understood that as limitation of the scope of the invention.It should be pointed out that for the person of ordinary skill of the art, without departing from On the premise of present inventive concept, some deformation can also be made and improve, these broadly fall into the scope of the present invention.Therefore this Bright protection domain should be defined by described claim.

Claims (3)

1. a kind of high sensitivity microwave receiver it is characterised in that: include aerial signal input (1), 3ghz-6ghz frequency conversion list First (2), 20mhz-3ghz converter unit (3) sum word processing terminal (4), the input port of described aerial signal input (1) Connect antenna switching unit (5), the outfan of described antenna switching unit (5) connects RF switching unit (6), and described radio frequency is opened The outfan closing unit (6) connects 20mhz-3ghz converter unit (3)；Described 3ghz-6ghz converter unit (2) includes wave band and cuts Change unit (7), filter and amplification unit (8), low-loss microwave mixing unit (9), the second filter and amplification unit (10), wave band switching Unit (11), the outfan of described wave band switch unit (7) connects the input of filter and amplification unit (8), and described low-loss is micro- The outfan of wave mixing unit (9) connects the input of the second filter and amplification unit (10), described second filter and amplification unit (10) outfan connects wave band switch unit (11)；

Described digital processing terminal is electrically connected with digital information safety processing system, described digital information safety processing system bag Include: safety control module and secure processing module, both two-way communications, wherein, safety control module is pc machine and/or server One of, safety control module be responsible for controlling many ca with close, generate control word cw, management controls Entitlement Control Message ecm and Entitlement Management Message emm, generation or reception drm encryption key, control carry out mode and the control of safe handling to digital information Secure processing module processed carries out safe handling to digital information；

Described digital information safety processing system is electrically connected with information delivery apparatus, and described information distributing device includes receiver machine Shell, is provided with microcontroller and electric supply installation, described electric supply installation is electrically connected with solar panel, described in receiver enclosure Microcontroller is connected with cloud backup of memory signal；

Described cloud backup of memory is electrically connected with emergency backup device, and described emergency backup device is electrically connected with power-off alarm, Described power-off alarm is connected with described microcontroller signal.

2. high sensitivity microwave receiver according to claim 1 it is characterised in that: described 20mhz-3ghz converter unit (3) include input height to put unit (12), the first frequency conversion (13), put (14), the second frequency conversion (15) in first, put (16) in second, The outfan that described input height puts unit (12) is connected with the input of the first frequency conversion (13), the output of described first frequency conversion (13) The input that end passes through to put (14) in first is connected with the second frequency conversion (15), and the outfan of described second frequency conversion (15) connects second In put (16) connect.

3. high sensitivity microwave receiver according to claim 1 it is characterised in that: described digital processing terminal (4) bag Include broadband and adopt a/d unit (22), fpga and control interface unit (23), digital dsp unit (20) and network control unit (21), described broadband adopts the outfan of a/d unit (22) to pass through fpga and control interface unit (23) and digital dsp unit (20) input connects.