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Active rod antenna

A rod antenna and antenna base technology, which is applied in the field of weak electric field testing instruments, can solve the problem that the antenna cannot meet the weak electric field detection requirements, etc., and achieve the effects of low noise floor, high test upper limit and high sensitivity

Active Publication Date: 2013-12-18
陕西海泰电子有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the technical problem that the existing antenna cannot meet the detection requirements of the weak electric field, the present invention provides an active rod antenna with low noise floor, which is specially used for the RE102 test of the national standard GJB152A-97

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Embodiment Construction

[0068] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0069] An active rod antenna, including a rod wire, a ground plane 2, and an antenna base 3. The length of the rod antenna 1 is adjustable. After the rod antenna 1 is fully pulled apart, the effective length exposed to the electric field is 1040mm. The tail of the rod antenna 1 It is a thread with a length of 10mm, and the ground plane 2 is connected to the upper cover of the antenna base 3. The ground plane 2 is composed of two identical aluminum plates, and the two aluminum plates are connected by hinges. The size of the ground plane 2 is 600mm× 600mm, and the thickness of the ground plane 2 is 1.5mm. There is a ground plane 2 in the center round hole. The rod antenna 1 is directly above the ground plane 2 , and the base is directly below the ground plane 2 . Whip ...

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Abstract

The invention provides an active rod antenna which comprises a pull rod antenna body, a grounded flat plate and an antenna base, wherein the pull rod antenna body senses an electric field signal in a space and outputs a voltage signal, the voltage signal is coupled to the inside of the antenna base, after signal modulation and impedance conversion carried out through a circuit in the antenna base, an electric signal reflecting electric field characteristics is output, and the electric signal can be directly output to a radio frequency input end of a spectrum analyzer through a radio frequency cable. The active rod antenna is high in sensitivity, low in base noise, even in antenna coefficient and large in dynamic range and meets RE102 test requirements of a national standard GJB152A-97.

Description

technical field [0001] The invention belongs to the field of electromagnetic measuring devices, and is a weak electric field testing instrument with high sensitivity, low noise floor, flat antenna coefficient and large dynamic range. Background technique [0002] With the rapid development of electronic technology, EMC standards are gradually established and improved. EMC standards stipulate the assessment and limit the electric field radiation emission of conventional electronic equipment, so the detection of weak electric field interference signals in space is very necessary. Due to the large antenna coefficient and low sensitivity of the passive whip antenna, it is difficult to realize the detection of field strength below 50dBμV / m in space, so it cannot meet the detection requirements of weak electric field; Therefore, it is difficult to meet the detection requirements of weak electric field. Contents of the invention [0003] In order to solve the technical problem t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q23/00H03F1/56G01R29/08G01R31/00
Inventor 郭恩全王浩郭永峰苗胜商高平
Owner 陕西海泰电子有限责任公司