CN2773699Y - Portable microwave signal detector - Google Patents
Portable microwave signal detector Download PDFInfo
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- CN2773699Y CN2773699Y CN 200420112733 CN200420112733U CN2773699Y CN 2773699 Y CN2773699 Y CN 2773699Y CN 200420112733 CN200420112733 CN 200420112733 CN 200420112733 U CN200420112733 U CN 200420112733U CN 2773699 Y CN2773699 Y CN 2773699Y
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- signal detector
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Abstract
The utility model discloses a portable microwave signal detector, which comprises a casing, a microwave down converter and a frequency selective level meter, wherein the microwave down converter is composed of a gating wave filter, a low noise amplifier, a mirror suppressing wave filter, a frequency mixer and an intermediate frequency wave filter; the frequency selective level meter is composed of a control part, a detecting part, a storage part and a power supply managing part; the control part is composed of an SCM, a display circuit and a keyboard circuit; the detecting part is composed of a high frequency attenuator, a tuner, an intermediate frequency attenuator and an intermediate frequency amplify wave detecting circuit and a linear trim circuit; the power supply managing part is composed of a voltage stabilizing module, a voltage boosting module, a rectification circuit and a rechargeable battery pack; the storage part is composed of a memory chip circuit. The utility model has the advantages of small volume, light weight, low price, simple operation, etc., and is suitable for being used for constructing and maintaining microwave circuits outdoors.
Description
Technical field
The present invention relates to a kind of signal detecting and measuring apparatus, more specifically, relate to a kind of portable type microwave signal detector, belong to the communications measurement instruments field.
Background technology
The existing portable field intensity detector that is used for the microwave signal measurement on the domestic and international market is 1.3～2GHz low-frequency range at present, mainly is used in closed-circuit television and mobile communication system, is not used in the lightweight instrument of the high-end radio-frequency signal detection of the above microwave of 2GHz.And the development of microwave communication construction now is very fast, in the construction plan of national the Radio Management Commission, the point frequency range of microwave has frequently risen to more than the 8GHz, the a large amount of spread spectrum microwave communication lines of building and the development of Bluetooth technology, its frequency range also gradually by 2.4GHz to the 5.8GHz transition, in microwave communication project is built, the main instrument of the high-end radio-frequency signal detection that prior art adopted is a spectrum analyzer, but it exists bulky, weight is excessive, cost an arm and a leg, significant disadvantages such as complicated operation, and be unsuitable for motor-driven use under the field environment, therefore, developing " lightweight microwave field density detector ", is very necessary and practical.
Goal of the invention
The present invention promptly is at shortcoming of the prior art, proposes a kind of construction of microwave line under the field environment and portable type microwave signal detector that maintenance is used of being suitable for.
The present invention adopts following technical scheme:
A kind of portable type microwave signal detector comprises: shell, microwave low-converter and selecive level meter.
Described microwave low-converter by acceptance filter, low noise amplifier, press down mirror wave filter, frequency mixer, intermediate-frequency filter and form; Wherein signal is passed to acceptance filter by accepting antenna, and the signal of selecting is amplified into through low noise amplifier and presses down the mirror wave filter, removes the image frequency noise; Enter the undesirable frequency conversion composite signal of intermediate-frequency filter filtering by frequency mixer again, provide radio-frequency bias from signal frequency conversion assembly for frequency mixer after local oscillator of CPU;
Described selecive level meter partly is made up of control section, test section, storage area, power management, wherein partly pass to control section after testing from the signal of microwave low-converter, anti-pass is to control section then to pass to storage area again, and power management partly is test section, control section and storage area power supply.
Wherein said control section is made up of single-chip microcomputer, demonstration and keyboard circuit, and wherein Keyboard Control is passed to single-chip microcomputer with signal, and single-chip microcomputer is passed to display module with signal again.
Described test section by high frequency attenuator, tuner, intermediate frequency attenuator, in put detection and the linear circuit of adjusting is formed, wherein high frequency attenuator is connected with tuner, tuner links to each other with intermediate frequency attenuator, intermediate frequency attenuator with in put detection and link to each other, in put detection and adjust circuit with linearity and link to each other.
Described power management part is made up of Voltage stabilizing module, boost module, rectification circuit, rechargeable battery, and wherein rectification circuit is connected with boost module with rechargeable battery, and rechargeable battery links to each other with Voltage stabilizing module with boost module.
Described storage area is the storage chip circuit.
The present invention has following advantage:
(1) volume is little, and is in light weight;
(2) low price;
(3) simple to operate;
(4) construction and the maintenance that is fit to microwave line under the field environment used.
Description of drawings
Fig. 1 is a composition block scheme of the present invention.
Fig. 2 is a systematic schematic diagram of the present invention.
Specific embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
With reference to figure 1, Fig. 2, a kind of 5.8GHz portable type microwave signal detector, the microwave field density detector mainly is made up of microwave low-converter and selecive level meter.Wherein: the microwave low-converter by acceptance filter, low noise amplifier, press down mirror wave filter, frequency mixer, intermediate-frequency filter etc. and form; Selecive level meter partly is made up of control section, test section, storage area, power management, and control section is made up of single-chip microcomputer, demonstration and keyboard circuit, the test section by high frequency attenuator, tuner, intermediate frequency attenuator, in put detection and the linear circuit of adjusting is formed, the power management part is made up of Voltage stabilizing module, boost module, rectification circuit, rechargeable battery pack, and storage area is made up of the storage chip circuit.
In actual the use, the rf inputs of microwave field density detector is connect the antenna output end at any station at the output terminal of signal source or two stations of spread spectrum digital microwave systems, the microwave low-converter is with the frequency translation, its net gain is 20dB, even also the microwave output frequency becomes the incoming frequency of selecive level meter, signal is behind the 40dB high frequency attenuator, becoming the 38.9MHz intermediate-freuqncy signal through mixing in tuner exports, 38.9MHz intermediate-freuqncy signal after 20dB decay, put detecting circuit during signal delivered to, the wave detector output signal is adjusted circuit through linearity and is delivered to CPU, and CPU gives decibel value and the frequency values that display module directly demonstrates the field intensity detector after with signal Processing.
Control function realizes the access of measurement data by single-chip microcomputer 89C51 and 89C2051, keyboard input and show output etc.The effect of storage area is to preserve testing result by storage chip 24C08, and can directly access from detector after measurement is finished and check measurement result.
Power management partly is used for switching AC/DC power supply mode and voltage stabilizing.Do not exchanging under the situation of input, detector will use the direct current supply mode of electric battery; In case the input of interchange is arranged, and detector will switch to ac power supply method, by the external charge device AC rectification be become direct current, supply with detector work.Detector all can charge to the chargeable storage group under open and close machine state.
Specific embodiment of the present invention has been done detailed explanation to the content of invention.For one of ordinary skill in the art, any conspicuous change that it is done all constitutes to infringement of patent right of the present invention, with corresponding legal responsibilities without departing from the premise in the spirit of the present invention.
Claims (5)
1. portable type microwave signal detector, comprising: shell, microwave low-converter and selecive level meter is characterized in that:
Described microwave low-converter by acceptance filter, low noise amplifier, press down mirror wave filter, frequency mixer, intermediate-frequency filter and form; Wherein receiving antenna is passed to acceptance filter with signal, and the signal of selecting is amplified into through low noise amplifier and presses down the mirror wave filter, removes the image frequency noise; Enter the undesirable frequency conversion composite signal of intermediate-frequency filter filtering by frequency mixer again, provide radio-frequency bias from signal frequency conversion assembly for frequency mixer after local oscillator of CPU;
Described selecive level meter partly is made up of control section, test section, storage area, power management, wherein partly pass to control section after testing from the signal of microwave low-converter, anti-pass is to control section then to pass to storage area again, and power management partly is test section, control section and storage area power supply.
2. a kind of portable type microwave signal detector as claimed in claim 1, it is characterized in that: described control section is made up of single-chip microcomputer, display module and keyboard control circuit, wherein Keyboard Control is passed to single-chip microcomputer with signal, and single-chip microcomputer is passed to display module with signal again.
3. a kind of portable type microwave signal detector as claimed in claim 1, it is characterized in that: described test section by high frequency attenuator, tuner, intermediate frequency attenuator, in put detection and the linear circuit of adjusting is formed, wherein high frequency attenuator is connected with tuner, tuner links to each other with intermediate frequency attenuator, intermediate frequency attenuator with in put detection and link to each other, in put detection and adjust circuit with linearity and link to each other.
4. a kind of portable type microwave signal detector as claimed in claim 1, it is characterized in that: described power management part is made up of Voltage stabilizing module, boost module, rectification circuit, rechargeable battery, wherein rectification circuit is connected with boost module with rechargeable battery, and rechargeable battery links to each other with Voltage stabilizing module with boost module.
5. a kind of portable type microwave signal detector as claimed in claim 1 is characterized in that: described storage area is the storage chip circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420112733 CN2773699Y (en) | 2004-11-12 | 2004-11-12 | Portable microwave signal detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420112733 CN2773699Y (en) | 2004-11-12 | 2004-11-12 | Portable microwave signal detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2773699Y true CN2773699Y (en) | 2006-04-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420112733 Expired - Fee Related CN2773699Y (en) | 2004-11-12 | 2004-11-12 | Portable microwave signal detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2773699Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102282474A (en) * | 2008-07-30 | 2011-12-14 | 莫里微波公司 | Data measurement methods and systems |
| CN102572507A (en) * | 2012-02-03 | 2012-07-11 | 徐汉阳 | Digital television frequency transmission power detecting postback device |
| CN103116072A (en) * | 2013-01-18 | 2013-05-22 | 东南大学 | Microwave detecting system based on clamped beams and indirect power sensors and detecting method of microwave detecting system |
| CN103812226A (en) * | 2012-11-13 | 2014-05-21 | 集美大学 | Radio frequency energy collecting device applied to wireless mobile terminal |
| CN109752694A (en) * | 2017-11-01 | 2019-05-14 | 北京振兴计量测试研究所 | Two waveband microwave signal detection device |
-
2004
- 2004-11-12 CN CN 200420112733 patent/CN2773699Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102282474A (en) * | 2008-07-30 | 2011-12-14 | 莫里微波公司 | Data measurement methods and systems |
| CN102282474B (en) * | 2008-07-30 | 2014-06-04 | 莫里微波公司 | Data measurement methods and systems |
| CN102572507A (en) * | 2012-02-03 | 2012-07-11 | 徐汉阳 | Digital television frequency transmission power detecting postback device |
| CN103812226A (en) * | 2012-11-13 | 2014-05-21 | 集美大学 | Radio frequency energy collecting device applied to wireless mobile terminal |
| CN103116072A (en) * | 2013-01-18 | 2013-05-22 | 东南大学 | Microwave detecting system based on clamped beams and indirect power sensors and detecting method of microwave detecting system |
| CN103116072B (en) * | 2013-01-18 | 2015-06-10 | 东南大学 | Microwave detecting system based on clamped beams and indirect power sensors and detecting method of microwave detecting system |
| CN109752694A (en) * | 2017-11-01 | 2019-05-14 | 北京振兴计量测试研究所 | Two waveband microwave signal detection device |
| CN109752694B (en) * | 2017-11-01 | 2021-10-29 | 北京振兴计量测试研究所 | Dual-band microwave signal detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |