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Balance band-pass filter based on single-disturbance one-cavity multimode SIW

A technology of balanced band and filter, which is applied to waveguide devices, electrical components, circuits, etc., and can solve the problems of large insertion loss and size reduction

Active Publication Date: 2021-09-10
NANJING IND INST FOR ADVANCED INTELLIGENT EQUIP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Document 3 (P.Li, H.Chu and R.Chen, "Design of Compact Bandpass Filters Using Quarter-Mode and Eighth-Mode SIW Cavities," IEEE Trans.Compon., Packag., Manuf.Technol.2017, pp.956 -963.) The SIW balanced bandpass filter designed with a quarter-mode SIW resonator can further reduce the size, and the structure is also a single layer, but the insertion loss is large

Method used

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  • Balance band-pass filter based on single-disturbance one-cavity multimode SIW
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  • Balance band-pass filter based on single-disturbance one-cavity multimode SIW

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Embodiment 1

[0048] Such as Figure 1~2 As shown, this embodiment provides a balanced bandpass filter based on a single-disturbance one-cavity multi-mode SIW, a quadrilateral dielectric substrate 1, a metal ground plate 3 is provided on the lower surface of the dielectric substrate 1, and a metal ground plate 3 is provided on the upper surface of the dielectric substrate 1. There are a metal layer 2, a first input port feeder 4, a second input port feeder 5, a first output port feeder 6 and a second output port feeder 7, the metal layer 2 is located at the center of the dielectric substrate 1; the first input port The feeder 4 and the second input port feeder 5 are located on one side of the vertical central axis AA' of the dielectric substrate 1, one end is connected to the edge of the dielectric substrate 1, and the other end is connected to the metal layer 2; the first output port feeder 6 and the second The output port feeder 7 is located on the other side of the vertical central axis ...

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Abstract

The invention discloses a balance band-pass filter based on single-disturbance one-cavity multimode SIW. The balance band-pass filter comprises a dielectric substrate, wherein a metal layer is arranged on the upper surface of the dielectric substrate, a metal grounding plate is arranged on the lower surface of the dielectric substrate, an input port feeder line and an output port feeder line are respectively arranged on the dielectric substrate, a circle of metalized through holes are formed in the boundary of the metal layer to form an SIW resonant cavity, and a middle metal perturbation through hole, a metal perturbation through hole set and a port metal perturbation through hole are formed in the SIW resonant cavity. According to the invention, the balance band-pass filter is small in size and compact in structure, the miniaturization performance is achieved, deviation of a TE201 mode and a TE401 mode is caused by disturbance of the metal perturbation through holes, the TE201 mode and the TE401 mode are made to be closer to a TE202 mode and a TE402 mode, two pass bands are formed respectively, and differential mode transmission and in-band high common-mode rejection are achieved.

Description

technical field [0001] The invention relates to the technical field of microwave passive devices, in particular to a balanced bandpass filter based on a single-disturbance, one-cavity, and multi-mode SIW with a compact structure and high performance. Background technique [0002] Substrate Integrated Waveguide (SIW, Substrate Integrated Waveguide) technology is a planar waveguide technology proposed in recent years. It inherits the advantages of waveguide, such as low loss, high quality factor, and large power capacity, and also integrates the low profile of microstrip. , small size, and easy integration with other planar circuits. Balanced circuits are becoming more and more popular in modern wireless communication systems due to their advantages of anti-noise and low electromagnetic interference. In the process of utilizing these advantages, scholars have conducted research on the common-mode rejection of some novel SIW balanced bandpass filters. ,Widespread concern. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/201H01P1/203
CPCH01P1/2013H01P1/201H01P1/203H01P1/20309
Inventor 张钢郑健平康杨继全
Owner NANJING IND INST FOR ADVANCED INTELLIGENT EQUIP
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