CN102956989B - A kind of design method of low-frequency electric field test antenna - Google Patents
A kind of design method of low-frequency electric field test antenna Download PDFInfo
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- CN102956989B CN102956989B CN201210449879.9A CN201210449879A CN102956989B CN 102956989 B CN102956989 B CN 102956989B CN 201210449879 A CN201210449879 A CN 201210449879A CN 102956989 B CN102956989 B CN 102956989B
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- antenna
- box body
- signal amplifier
- control panel
- radio frequency
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Abstract
The present invention relates to a kind of design methods of low-frequency electric field test antenna, it is characterised in that: including antenna oscillator, reflecting plate, signal amplifier, antenna box body, radio frequency connector, control panel and battery；Wherein, signal amplifier and battery are built in antenna box body；Antenna oscillator is connected by the external screw thread inner conductor of end with the threaded hole of input terminal on signal amplifier circuit plate；Reflecting plate is fixed on the upper cover plate of antenna box body perpendicular to antenna oscillator, and by screw；The switch and radio frequency connector for controlling signal amplifier on/off are provided on the control panel of the antenna box body；Radio frequency connector is weldingly connected with signal amplifier output end.The present invention has the characteristics that be suitble to cooperate with receiver without tuning, easy to disassemble, high-gain, broadband, so that Auto-Test System is formed, to system progress sweep check.
Description
Technical field
The invention belongs to Electronic Testings and field of measuring technique, are related to calibration test and electromagnetic compatibility radiation interference test system
A kind of test antenna of system more particularly to a kind of low-frequency electric field test antenna based on signal amplifier principle, can test
The electric field radiation of 9kHz -35MHz emits, and to be suitable for the measurement of electromagnetic field radiation transmitting, and is also used for screened room, shielding
The leak detection test of the radiation interference of shelter, the shield effectiveness of cabinet and large scale electronic equipment and system.
Background technique
In order to adapt to the demand of modern electronic technology development, the research and development of antenna are mainly towards small size, broadband, high-gain
Direction develop.In recent years, higher and higher for the electromagnetism interference performance requirement of product in field of electromagnetic compatibility, due to each
The electromagnetic interference (EMI) emissions frequency range of electronic product is more and more wider, and low-frequency range is especially intensive, especially in 9K -35MHz frequency range.And
And the passive test antenna for being traditionally used for measurement low frequency electric field at present is only capable of measuring big signal, while the size of antenna can not contract
It is short, greatly limit the Portability of antenna.Therefore a kind of low-frequency electric field test antenna based on signal amplifier is needed in engineering.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of design methods of low-frequency electric field test antenna, existing to overcome
Defect present in technology.
The technical solution of the present invention is as follows: a kind of design method of low-frequency electric field test antenna, it is characterised in that: including antenna
Oscillator, reflecting plate, signal amplifier, antenna box body, radio frequency connector, control panel and battery；Wherein, signal amplifier and electricity
Pond is built in antenna box body；Input terminal on the external screw thread inner conductor and signal amplifier circuit plate that antenna oscillator passes through end
Threaded hole is connected；Reflecting plate is fixed on the upper cover plate of antenna box body perpendicular to antenna oscillator, and by screw；The antenna box
The switch and radio frequency connector for controlling signal amplifier on/off are provided on the control panel of body；Radio frequency connector with
Signal amplifier output end is weldingly connected.
The battery is rechargeable battery；Charge port is provided on control panel.
Indicator light is provided on the control panel.
The antenna oscillator is made of round metal bar.
The reflecting plate is the square-shaped metal reflecting plate that the metal material of surface oxidation-resistant is fabricated to.
For the signal amplifier using field-effect tube as input stage, low noise chip is amplifying stage, and final stage is to penetrate grade to follow
Device.
Technical effect of the invention are as follows:
The present invention need not tune, is easy to disassemble, due to the use of the high activated amplifier of high-gain, flatness, make this hair
It is bright to have the characteristics that high-gain, wide band, it is suitble to cooperate with receiver, to form Auto-Test System, system is swept
Frequency is tested.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Appended drawing reference are as follows:
1-antenna oscillator, 2-reflecting plates, 3-signal amplifiers, 4-antenna box bodys, 5-switches, 6-indicator lights, 7-
Charge port, 8-radio frequency connectors, 9-upper cover plates, 10-control panels, 11-batteries.
Specific embodiment
Referring to Fig. 1, a kind of specific structure of the design method of low-frequency electric field test antenna of the present invention are as follows:
Including antenna oscillator 1, reflecting plate 2, signal amplifier 3, antenna box body 4, radio frequency connector 8,10 and of control panel
Battery 11；Wherein, signal amplifier 3 and battery 11 are built in antenna box body 4；In the external screw thread that antenna oscillator 1 passes through end
Conductor is connected with the threaded hole of input terminal on 3 circuit board of signal amplifier；Reflecting plate 2 passes through screw perpendicular to antenna oscillator 1
It is fixed on the upper cover plate 9 of antenna box body 4, forms electromagnetic field circuit；It is arranged on the control panel 10 of the antenna box body 4 useful
In the switch 5 and radio frequency connector 8 of control 3 on/off of signal amplifier；Radio frequency connector 8 and 3 output end of signal amplifier
It is weldingly connected.
Battery 11 in the present invention is rechargeable battery, charge port 7 is provided on control panel 10, for filling to rechargeable battery
Electricity.
It is provided with indicator light 6 on control panel 10 in the present invention, for showing the on-off of power supply.
Antenna oscillator 1 in the present invention can be made of round metal bar.
Reflecting plate 2 in the present invention is the square-shaped metal reflecting plate being fabricated to by metal material system, and anti-oxidant place is made on surface
Reason.
Signal amplifier 3 in the present invention selects low noise chip as amplifying stage, end using field-effect tube as input stage
Grade realizes the matching with 50 Ω radio frequency coaxial-cables using a grade follower is penetrated.Dual power supply, signal are carried out by ± 5V battery 11
The input terminal of amplifier 3 is provided with threaded hole, matches with the screw thread of 1 one end of antenna oscillator, the output end of amplifier directly with penetrate
The binding post of frequency connector 8 welds.
Claims (1)
1. a kind of design method of low-frequency electric field test antenna, it is characterised in that: including antenna oscillator (1), reflecting plate (2), letter
Number amplifier (3), antenna box body (4), radio frequency connector (8), control panel (10) and battery (11)；Wherein, signal amplifier
(3) it is built in antenna box body (4) with battery (11)；Antenna oscillator (1) is amplified by the external screw thread inner conductor and signal of end
The threaded hole of input terminal is connected on device (3) circuit board；Reflecting plate (2) is fixed on day by screw perpendicular to antenna oscillator (1)
On the upper cover plate (9) of wire box body (4)；It is provided on the control panel (10) of the antenna box body (4) for controlling signal amplification
The switch (5) and radio frequency connector (8) of device (3) on/off；Radio frequency connector (8) and signal amplifier (3) output end weld
It is connected；The battery (11) is rechargeable battery；Charge port (7) are provided on control panel (10)；The control panel
(10) indicator light (6) are provided on；The antenna oscillator (1) is made of round metal bar；The reflecting plate (2) is surface
The square-shaped metal reflecting plate that oxidation resistant metal material is fabricated to；The signal amplifier (3) is input with field-effect tube
Grade, low noise chip are amplifying stage, and final stage is to penetrate a grade follower；This method design low-frequency electric field test antenna need not tuning,
It is easy to disassemble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210449879.9A CN102956989B (en) | 2012-11-12 | 2012-11-12 | A kind of design method of low-frequency electric field test antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210449879.9A CN102956989B (en) | 2012-11-12 | 2012-11-12 | A kind of design method of low-frequency electric field test antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102956989A CN102956989A (en) | 2013-03-06 |
| CN102956989B true CN102956989B (en) | 2019-01-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210449879.9A Active CN102956989B (en) | 2012-11-12 | 2012-11-12 | A kind of design method of low-frequency electric field test antenna |
Country Status (1)
| Country | Link |
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| CN (1) | CN102956989B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161817B (en) * | 2015-09-29 | 2018-09-11 | 国家电网公司 | A kind of oscillator replacement structure of pulse field intensity probe |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19636277C2 (en) * | 1996-09-06 | 2001-07-05 | Globalmind Consumer Electronic | Device for the detection of alternating electromagnetic fields |
| JP2001196842A (en) * | 2000-01-12 | 2001-07-19 | Mitsubishi Electric Corp | Mirror surface precision measuring instrument for reflection mirror antenna and mirror surface control system applying this |
| JP3913696B2 (en) * | 2003-03-19 | 2007-05-09 | 三洋電機株式会社 | Base station equipment |
| US20040231137A1 (en) * | 2003-05-20 | 2004-11-25 | Derek Seeber | Method of manufacturing local coils using pre-tuned non-magnetic circuitry modules |
| CN2710187Y (en) * | 2004-03-25 | 2005-07-13 | 东南大学 | Signal source built-in type spherical dipole antenna |
| CN101644770B (en) * | 2009-09-07 | 2011-09-07 | 哈尔滨工业大学 | Passive millimeter wave imaging system |
| CN101740850A (en) * | 2009-12-31 | 2010-06-16 | 西安开容电子技术有限责任公司 | High-gain broadband antenna based on the impedance matching principle and design method thereof |
| CN101794932B (en) * | 2009-12-31 | 2013-09-11 | 西安开容电子技术有限责任公司 | Broadband high-gain magnetic field annular test antenna based on resonance principle and design method |
| CN201909828U (en) * | 2010-12-23 | 2011-07-27 | 上海市电力公司 | Test system for bubble electric discharge of transformer |
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2012
- 2012-11-12 CN CN201210449879.9A patent/CN102956989B/en active Active
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