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A Broadband Bandpass Filter with Notch Characteristic

A band-pass filter and notch characteristic technology, applied in waveguide-type devices, circuits, electrical components, etc., can solve the problems of increasing the volume of radio frequency transceivers, increasing power consumption and cost, and deteriorating notch characteristic performance. , to achieve the effect of reducing volume, good notch characteristics and high passband selectivity

Active Publication Date: 2019-04-19
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, in the radio astronomy observation system, one of the methods to suppress unnecessary frequency points is to integrate a notch filter in it to suppress the interference signal of a specific frequency band in the environment. However, the added notch filter not only It doubles the size of the RF transceiver, increases its power consumption and cost, and the notch characteristics after integration are easily affected by the integration and the performance is deteriorated. At the same time, the performance of other devices in the system is also easily affected by the notch filter. Influence, and then can not achieve the purpose of effectively suppressing the interference signal of a specific frequency band

Method used

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  • A Broadband Bandpass Filter with Notch Characteristic
  • A Broadband Bandpass Filter with Notch Characteristic
  • A Broadband Bandpass Filter with Notch Characteristic

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Embodiment Construction

[0021] It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0022] Such as figure 1 Shown is a schematic structural view of an embodiment of a broadband bandpass filter with notch characteristics of the present invention. The broadband bandpass filter includes a main resonator 100, a first auxiliary resonator 200 and a second auxiliary resonator 200 arranged symmetrically left and right. The auxiliary resonator 300, the first notch unit 400 and the second notch unit 500 arranged symmetrically, and the input port Pin arranged on the side of the first auxiliary resonator 200 and the input port Pin arranged on the side of the second auxiliary resonator 300 Output port Pout;

[0023] Wherein, the first auxiliary resonator 200 and the second auxiliary resonator 300 are respectively coupled with the main resonator 100 gap to form a wide passband, and the first trap...

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Abstract

The invention discloses a wide-band band-pass filter having a notched characteristic. The wide-band band-pass filter comprises a main resonator, a first auxiliary resonator, a second auxiliary resonator, a first notch unit, a second notch unit, an input port arranged at one side of the first auxiliary resonator, and an output port arranged at one side of the second auxiliary resonator, wherein the first auxiliary resonator and the second auxiliary resonator are arranged in a left-right symmetric manner and the first notch unit and the second notch unit are arranged in a left-right symmetric manner. The first auxiliary resonator and the second auxiliary resonator are coupled with the main resonator respectively to form a wide-band passband; the first notch unit and the second notch unit are coupled with the slot of the main resonator to form a notch in the wide-band passband; the first auxiliary resonator and the second auxiliary resonator are arranged at one side of the main resonator; and the first notch unit and the second notch unit are arranged at the other side of the main resonator. The wide-band band-pass filter are applied to the radio astro observation system; and the notch characteristic and the wideband filter characteristic do not affect each other.

Description

technical field [0001] The invention relates to the technical field of microwave communication, and more specifically relates to a wideband bandpass filter with notch characteristics. Background technique [0002] With the rapid development of the communication industry, the spectrum resources are becoming more and more tense, and the spectrum utilization is becoming more and more intensive. In practical applications, there are often some unnecessary frequency bands mixed with the required frequency bands. Therefore, in In the actual communication system, it is necessary to suppress these unnecessary frequency bands in the required frequency band, especially in the radio astronomy observation system. [0003] At present, in the radio astronomy observation system, one of the methods to suppress unnecessary frequency points is to integrate a notch filter in it to suppress the interference signal of a specific frequency band in the environment. However, the added notch filter n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/203
CPCH01P1/20381
Inventor 刘海文徐贻辰文品官雪辉任宝平马军梁国华
Owner XI AN JIAOTONG UNIV
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