Frequency hopping filter and coupling circuit thereof

A coupling circuit and filter technology, applied in the field of frequency hopping filters, can solve the problems of increased interference and shielding of receivers, occupation of other radio operating frequencies, and increased difficulty in avoiding radio frequencies. Weak coupling and little effect

Pending Publication Date: 2022-05-27
GUANGDONG SHENGDA ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Too wide working bandwidth will increase the noise power entering the receiver, and at the same time, the probability of the receiver being interfered and shielded will also increase accordingly. Too large bandwidth will also occupy the working frequency of other stations, making the number of channels working in the same bandwidth decrease, the frequency avoidance difficulty of each station increases

Method used

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  • Frequency hopping filter and coupling circuit thereof
  • Frequency hopping filter and coupling circuit thereof
  • Frequency hopping filter and coupling circuit thereof

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Embodiment Construction

[0032] In order to make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to figure 1 , a schematic diagram of a coupling circuit of a traditional second-order frequency hopping filter, including a coupling inductor (not marked) and a tuning capacitor C1; the coupled inductor includes an input coupled inductor (not marked), an interstage coupled inductor (not marked) that are connected in sequence ) and ...

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PUM

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Abstract

The invention discloses a frequency hopping filter and a coupling circuit thereof. The coupling circuit comprises a coupling inductor, a tuning inductor and a tuning capacitor, the coupling inductor comprises an input coupling inductor, an inter-stage coupling inductor and an output coupling inductor which are connected in sequence; the tuning inductor comprises adjustable inductor arrays which are arranged in one-to-one correspondence with the coupling inductors, and the tuning inductor is used for adjusting an accessed inductance value according to the coupling strength of the coupling circuit; the tuning capacitor comprises an adjustable capacitor array arranged between any two coupled inductors which are connected with each other. According to the frequency hopping filter adopting the coupling circuit, the coupling strength of the filter can be adjusted in real time according to the use frequency band, so that the relative bandwidth of the filter is reduced along with the increase of the frequency, and the absolute bandwidth of the filter is kept constant.

Description

technical field [0001] The invention relates to the technical field of microwave radio frequency, in particular to a frequency hopping filter. Background technique [0002] With the rapid development of communication technology, spectrum resources are becoming increasingly tight. Each communication terminal used in the same area needs to avoid frequency conflicts to prevent information leakage or mutual interference. At the same time, in order to prevent communication electronic equipment from being interfered and suppressed, it is necessary to use frequency hopping technology. . Frequency hopping communication has constantly changing working frequency, has anti-jamming, anti-interception functions, and can greatly improve the confidentiality, availability and spectrum utilization of the communication machine. The frequency hopping filter is an important component of the frequency hopping communication machine. It is used to filter out out-of-band noise and interference sig...

Claims

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Application Information

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IPC IPC(8): H03H7/01
CPCH03H7/0138H03H7/0115Y02D30/70
Inventor 卜景鹏官国阳王鑫涛严方勇
Owner GUANGDONG SHENGDA ELECTRONICS
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