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An electromagnetic two-dimensional reconfigurable filter with adjustable frequency bandwidth

A technology for reconstructing filters and bandwidth, which is applied in waveguide devices, circuits, resonators, etc., can solve the problems of large ferrite size and difficulty in intuitive adjustment of resonant cavity coupling strength, and achieve flexible bandwidth and broad application potential , The effect of improving the degree of waveform retention

Active Publication Date: 2020-02-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the electromagnetic tuning elements loaded in the reconfigurable filter proposed above are all used to change the resonance frequency of the substrate-integrated waveguide resonator, and it is not easy to realize the intuitive adjustment of the coupling strength between the resonators, and the required magnetic Tuned ferrites are bulkier

Method used

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  • An electromagnetic two-dimensional reconfigurable filter with adjustable frequency bandwidth
  • An electromagnetic two-dimensional reconfigurable filter with adjustable frequency bandwidth
  • An electromagnetic two-dimensional reconfigurable filter with adjustable frequency bandwidth

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Embodiment

[0031] In this embodiment, the structure of the electromagnetic two-dimensional reconfigurable filter based on the substrate integrated waveguide is as follows: figure 1 As shown, the dielectric substrate 2 adopts the Rogers duroid 6002 substrate with a thickness of 0.726mm, and its relative permittivity ε r=2.9, loss tangent tanδ=0.0012.

[0032] Specifically, in this embodiment, both the first resonant cavity 5 and the second resonant cavity 6 are rectangular substrate integrated waveguide resonators; the metallized through-hole array 4 is composed of cylindrical metallized through-holes, metal The through-hole diameter of the through-hole array 4 is 1 mm, and the distance between the centers of adjacent through-holes is 1.8 mm; the perturbation metallized through-hole 8 located in the middle of the first resonant cavity 5 and the second resonant cavity 6 is a cylinder body metallized through hole; the annular groove 9 is a circular annular groove; the shape of the through ...

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Abstract

The invention discloses an electromagnetic two-dimensional reconfigurable filter with adjustable frequency bandwidth, which belongs to the technical field of microwave and millimeter waves. In the present invention, the operating frequency of each resonator is adjusted by loading adjustable capacitors in the substrate-integrated waveguide resonator, and by loading ferrite material at the coupling window of the substrate-integrated waveguide filter to intuitively control the frequency of the substrate-integrated waveguide resonator. The coupling strength between them, and the adjustable capacitance is loaded on the input and output feeders to realize the adjustment of the external quality factor, thereby realizing the frequency adjustment of the reconfigurable filter and improving the flexibility of the filter bandwidth control. Compared with the traditional single-electrical reconfigurable substrate integrated waveguide filter, the present invention can realize the flexible design of the bandwidth, and the degree of filter waveform retention is also greatly improved. In the future, multi-band, miniaturized and intelligent wireless communication equipment And the system has broad application potential.

Description

technical field [0001] The invention belongs to the field of microwave and millimeter wave technology, and in particular relates to an electromagnetic two-dimensional reconfigurable filter with adjustable frequency and bandwidth. Background technique [0002] Facing the future intelligent wireless communication application requirements, multi-band and miniaturization have become an inevitable trend in the development of wireless communication. However, traditional filters generally can only work at a certain fixed frequency or a certain frequency band. If the system is to achieve multi-band work, it is often necessary to use multiple filters that work at different frequency bands. In the design of a multi-band wireless communication system, the number of required filters not only increases linearly with the number of frequency bands, but also the mutual interference between filters will become more significant, which will not only increase the complexity of system design, bu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/203H01P7/06
CPCH01P1/203H01P1/20309H01P7/06
Inventor 张巧利王秉中
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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