Short-wave narrow-band frequency-hopping pre-back selector

A prognostic selection and preselector technology, applied in electrical components, transmission systems, etc., can solve problems such as large volume, and achieve the effects of low noise figure, moderate gain, and fast frequency switching

Active Publication Date: 2015-02-11
GUANGZHOU HAIGE COMM GRP INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, only a few manufacturers can design and produce shortwave frequency hopping preselectors, and the volume is too large

Method used

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  • Short-wave narrow-band frequency-hopping pre-back selector
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  • Short-wave narrow-band frequency-hopping pre-back selector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] Such as figure 1 , figure 2 As shown, a kind of shortwave narrowband frequency hopping pre-selector of the present embodiment includes a broadband frequency hopping filter module, a main control unit and a narrowband frequency hopping filter module connected in sequence, and the main control unit includes a preselector main control unit and a rear The main control unit of the selector, the main control unit of the pre-selector and the main control unit of the post-selector are similar in function and principle. The state switch marks the connection relationship and state of the radio station and the filter, and indicates the working condition of the frequency hopping filter module at this time.

[0029] The basic principles and basic components of the main control unit of the preselector and postselector are the same, the difference is that the position of the attenuator and the LNA type I module are different, mainly considering different use environments, as a prese...

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PUM

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Abstract

The invention discloses a short-wave narrow-band frequency-hopping pre-back selector. The short-wave narrow-band frequency-hopping pre-back selector comprises a wide-band frequency-hopping filter module, a main control unit and a narrow-band frequency-hopping filter module which are connected in sequence, wherein the main control unit comprises a main control unit for a preselector and a main control unit for a back selector. The short-wave narrow-band frequency-hopping pre-back selector disclosed by the invention is communication anti-jamming equipment specially equipped for short-wave communication systems, short-wave receivers, short-wave transmitters and various short-wave radio stations, can effectively eliminate jam among the short-wave equipment and jam from the external, and has high selectivity, a rapid frequency-hopping function, good in-band intermodulation performance, a low noise factor and moderate gain.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a shortwave narrowband frequency hopping preselector. Background technique [0002] With the change and development of the communication environment, the traditional fixed-frequency pre-selector can no longer meet the actual needs. The short-wave narrowband frequency hopping pre-selector can be used as a pre-selector for the receiving channel of the receiver, and can also be used as a post-selector for the transmitting channel of the transmitter. It can perform fixed-frequency filtering or frequency-hopping filtering synchronously with the host; this function can effectively replace The fixed-frequency pre-selector not only meets the fixed-frequency work requirements of the whole machine, but also can follow the host computer to perform frequency-hopping work at any time, and can effectively eliminate the co-location among short-wave radio stations, short-wave rece...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/713H04B1/715
Inventor 颜克文张路明梁源
Owner GUANGZHOU HAIGE COMM GRP INC
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