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Communication receiver antenna feeder protector with electromagnetic pulse protection capability

A communication receiver and electromagnetic pulse technology, applied in the field of electronic information, can solve problems such as high action threshold, inability to apply HEMP protection, and hazards of post-stage sensitive radio frequency modules

Pending Publication Date: 2021-09-14
CHINA SHIP DEV & DESIGN CENT
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

GDT has two problems: (1) High action threshold
When the pulse voltage rise rate is on the order of several kV / μs, the GDT action threshold is above 500V, which means that it cannot protect against pulses with a peak value below 500V; (2) slow response speed
GDT needs tens of ns transition time to develop from glow discharge to streamer discharge, which will lead to leakage of high pulse energy, which is more harmful to the sensitive RF module of the subsequent stage
Therefore, the existing lightning protection modules cannot effectively deal with the threats posed by LEMP to shortwave / ultrashortwave communication systems, and cannot be applied to HEMP protection

Method used

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  • Communication receiver antenna feeder protector with electromagnetic pulse protection capability
  • Communication receiver antenna feeder protector with electromagnetic pulse protection capability
  • Communication receiver antenna feeder protector with electromagnetic pulse protection capability

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] see figure 1 , The embodiment of the present invention includes a primary switch circuit based on a gas discharge tube (GDT), an intermediate high-pass filter circuit and a final limiter circuit based on a transient voltage suppressor diode (TVS).

[0027] In the design of the primary switch circuit, according to the maximum withstand surge current I of the protection module according to the user max , can withstand the number of surges N 1 requirements, combined with the rated discharge current I of the GDT component to be selected surge , Rated service life N 2 , use the following formula to determine the number A of GDT components:

[0028]

[0029] It is assumed that the maximum withstand surge current I of the protection module by the user max Requirements equal to 20kA, can withstand the number of surges N 1 Equa...

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Abstract

The invention provides a communication receiver antenna feeder protector with electromagnetic pulse protection capability. The electromagnetic pulses of a short-wave / ultra-short-wave frequency band radio frequency channel are protected based on a multi-order filter, a gas discharge tube and a transient voltage suppression diode, and the function of protecting thunder and lightning electromagnetic pulses and high-altitude electromagnetic pulses at the same time is achieved; and a method for protecting lightning electromagnetic pulses and high-altitude electromagnetic pulses is provided for an antenna feeder path of a communication receiver. Compared with an existing antenna feeder protector implementation scheme based on a gas discharge tube, the communication receiver antenna feeder protector with the electromagnetic pulse protection capability is wide in protection electromagnetic pulse type range, high response speed, high through-current capacity, low insertion loss and low trigger threshold value; and particularly, the two main technical indexes including the response speed and the protection effect of the protector are remarkably superior to an existing antenna feeder protection technology.

Description

technical field [0001] The invention belongs to the technical field of electronic information, and in particular relates to a communication receiver antenna feeder protector with electromagnetic pulse protection capability. Background technique [0002] Lightning Electromagnetic Pulse (LEMP) and High Altitude Electromagnetic Pulse (HEMP) pose a serious threat to the security of the communication system and may damage the functional modules of the antenna feeding path. The threat of LEMP lies in its large energy, and the threat of HEMP lies in its fast front and high amplitude. At present, there is basically no protective measure for HEMP in the antenna feeder path, and the protective measure for LEMP is to connect a bypass protection module based on a ceramic gas discharge tube (GDT) in series in the radio frequency path. There are two problems with GDT: (1) The action threshold is high. When the pulse voltage rise rate is on the order of several kV / μs, the GDT action thre...

Claims

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Application Information

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IPC IPC(8): H02H9/04H02H9/06
CPCH02H9/04H02H9/06
Inventor 王冬冬郑生全冀航陈亮王文卓
Owner CHINA SHIP DEV & DESIGN CENT
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