Parameter-configurable active filter circuit

A technology of filter circuit and source filter, which is applied in the field of communication, can solve the problems of randomness of noise and suddenness inherent characteristics that cannot communicate, and achieve the effects of low cost, convenient operation, and expanded gain range

Pending Publication Date: 2020-12-11
QINGDAO TOPSCOMM COMM +1
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Problems solved by technology

[0004] In view of the defects or deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide an active filter circuit with configurable parameters, which can solve the randomness and burst of noise encountered by current communication devices in the communication process through its own switching frequency point. It is suitable for lines with high noise and wide noise spectrum range due to its inherent characteristics, and it is low in cost and easy to operate

Method used

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Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings of the description.

[0027] The overall block diagram of this design is as follows figure 1 As shown, it includes core bandwidth, frequency point, and gain configurable active filter circuit, MCU control circuit, noise detection circuit, and signal receiving end.

[0028] The implementation process is that the noise detection part detects the noise at the receiving end in real time, and sends the detection result to the MCU control circuit. The MCU control circuit judges whether the current noise is the optimal value at the current active filter channel frequency according to the detection result. If it is the optimal value, the active filter circuit can be configured to maintain the current channel by controlling the bandwidth, frequency point, and gain through the switching control command; , frequency point, and gain can be configured to switch the active f...

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Abstract

The invention discloses a broadband, frequency point and gain configurable active filter circuit, which comprises a broadband, frequency point and gain configurable active filter circuit, an MCU control circuit, a noise detection circuit and a signal receiving end. The problem that a current communication device cannot communicate due to randomness and sudden inherent characteristics of noise in the communication process is solved by designing a self-owned switching frequency point, a multi-order bandwidth, frequency point and gain configurable active filter circuit can be formed by cascadinga plurality of single-order bandwidth, frequency point and gain configurable active filter circuits, a wider bandwidth and more frequency points are configured, and the gain scope is expanded. The parameter-configurable active filter circuit is suitable for lines with large noise, does not cause noise interference to baseband signal adjustment, and is low in cost and convenient to operate.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an active filter circuit with configurable parameters. Background technique [0002] In the communication system, there are inherent characteristics of randomness and suddenness of noise, which lead to poor communication of the communication device due to the inherent characteristics during the communication process. [0003] The filter circuit design part of the current communication system adopts the natural frequency design, and it is impossible to communicate in the noisy line by using this method; some filter circuits are designed with a wide bandwidth, and the noise signal near the communication frequency will interfere with this method Baseband signal demodulation. Contents of the invention [0004] In view of the defects or deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide an active filter circuit with configurable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H11/04
CPCH03H11/04
Inventor 徐剑英李亮刘文斌郭怀林滕伟涛陈晓王波杨中原尹燕兵赵鑫张建李伟吴雪梅卢峰林志超程艳艳叶齐
Owner QINGDAO TOPSCOMM COMM
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