A UWB Bandpass Filter with Notch Characteristic

A technology of band-pass filter and notch wave characteristics, applied in waveguide devices, circuits, electrical components, etc., can solve problems such as difficult integration, complex structure, and complex design, and achieve improved selectivity, simple structure, and Q value high effect

Active Publication Date: 2019-01-01
XI AN JIAOTONG UNIV
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Problems solved by technology

One of the current methods to suppress unwanted frequency bands is to integrate a notch filter into a bandpass filter, however, this method is complex in design, complex in structure, large in size, and not easy to integrate. In addition, few researches currently will Combining high-temperature superconducting technology with radio-frequency interference suppression technology to design ultra-wideband high-temperature superconducting filters with notch characteristics

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  • A UWB Bandpass Filter with Notch Characteristic
  • A UWB Bandpass Filter with Notch Characteristic
  • A UWB Bandpass Filter with Notch Characteristic

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Embodiment Construction

[0016] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0017] Such as Figure 1 to Figure 3 As shown, the present invention provides an ultra-broadband bandpass superconducting filter with notch characteristics. Two split ring resonators 105, an input feeder 102 and an output feeder 103; the input feeder 102 and the output feeder 103 are respectively connected to the left and right sides of the T-shaped stub loaded resonator 101, and are coupled with the T-shaped stub loaded resonator 101 gap; the second A split ring resonator 104 and a second split ring resonator 105 are symmetrically arranged on the left and right sides of the T-shaped stub-loaded r...

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Abstract

The invention provides an ultra wide band bandpass filter with a notch property. The ultra wide band bandpass filter comprises a T-shaped stub-loaded resonator, a first open ring resonator, a second open ring resonator, an input feeder line and an output feeder line. The input feeder line and the output feeder line are connected at left and right sides of the T-shaped stub-loaded resonator and are in gap coupling with the T-shaped stub-loaded resonator. The first open ring resonator and the second open ring resonator are symmetrically arranged at the left and right sides of the T-shaped stub-loaded resonator and are in gap coupling with the left and right sides of the T-shaped stub-loaded resonator. Through adoption of the T-shaped stub-loaded resonator, the bandwidth of a passband can be controlled well, a zero point is respectively generated at two sides of the passband, and the selectivity of the passband is improved. Through adoption of the open ring resonators, a notch stopband is generated, a location of center frequency of the stopband can be adjusted conveniently, the zero point is respectively generated at two sides of the stopband, and the selectivity of the stopband is improved.

Description

technical field [0001] The invention relates to the technical field of microwave communication, and more specifically relates to an ultra-wideband band-pass filter with notch characteristics. Background technique [0002] With the rapid development of the global communication industry, multiple communication standards exist at the same time, which makes the frequency resources more and more tense. In practical applications, some unnecessary frequency bands often appear in the required frequency bands. Therefore, in actual communication systems In the desired frequency band, these unwanted frequency bands need to be suppressed. [0003] Especially for modern radio astronomy observations, radio frequency interference suppression technology has become an unprecedented technical challenge. One of the current methods to suppress unwanted frequency bands is to integrate a notch filter into a bandpass filter, however, this method is complex in design, complex in structure, large i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/203
CPCH01P1/203
Inventor 刘海文徐贻辰任宝平文品朱爽爽官雪辉
Owner XI AN JIAOTONG UNIV
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