Four-order Ka waveband band-pass filter based on printed ridge gap waveguide

A technology of band-pass filter and gap waveguide, which can be used in waveguide-type devices, electrical components, circuits, etc., and can solve the problems of high loss in microstrip circuits.

Active Publication Date: 2020-10-20
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem of high loss in traditional microstrip circuits in the mm-wave ba

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  • Four-order Ka waveband band-pass filter based on printed ridge gap waveguide
  • Four-order Ka waveband band-pass filter based on printed ridge gap waveguide
  • Four-order Ka waveband band-pass filter based on printed ridge gap waveguide

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Embodiment Construction

[0034] Objects, advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are only typical examples of applying the technical solutions of the present invention, and all technical solutions formed by adopting equivalent replacements or equivalent transformations fall within the protection scope of the present invention.

[0035] The embodiment of the present invention discloses a fourth-order Ka-band bandpass filter based on printed ridge-gap waveguides, such as Figure 1-5 as shown, Figure 6-10 For the processing and manufacturing scheme of the filter, the three-layer dielectric is extended in the horizontal direction and drilled, and the filter is fixed with PP screws to ensure the close fit of the three-layer structure.

[0036] The Ka-band bandpass filter includes a microstrip electromagnetic filtering structure 3 and a metal grounding plate 1, the middle of the...

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Abstract

The invention discloses a four-order Ka waveband band-pass filter based on a printed ridge gap waveguide. The filter comprises a microstrip filter structure arranged on the upper surface of a dielectric substrate, a top metal cover plate and a feed dielectric layer located in the middle layer and used for stabilizing an air gap. The microstrip filter structure comprises an input port, an output port, two half-wavelength coupling transmission line resonators and two T-shaped resonators. Two transmission zeros outside a passband can be obtained and adjusted by adjusting the longitudinal lengthsof the two T-shaped resonators, so that better frequency selection is realized, and the performances such as in-band insertion loss, relative bandwidth, in-band flatness and out-band rejection of thefilter are superior to those of a traditional Ka waveband band-pass filter. The invention also provides a processing and manufacturing scheme, and a test result is basically consistent with a simulation result. The antenna is simple in structure, small in size, easy to process, stable in performance, high in integrity and easy to systematically integrate with other circuits, and has wide application in future millimeter wave communication transmission application.

Description

technical field [0001] The invention relates to a fourth-order Ka-band bandpass filter based on a printed ridge gap waveguide, which can be used in the technical field of millimeter wave transmission. Background technique [0002] In microwave systems, the microstrip structure is widely used in filter design. Although the structure of the microstrip line is simple, easy to process, and low in cost, when the operating frequency rises to the millimeter wave frequency band, the microstrip line exposes the disadvantages of excessive loss and low power capacity, which comes from the noise of the microstrip line Scattering radiation, including radiation waves, leakage waves, and surface waves, and the higher the frequency, the more prominent the problem. Similarly, although the rectangular guided wave has the advantages of simple structure, high mechanical strength, low loss, and large power capacity, it inevitably has problems such as too small size, difficult processing, and di...

Claims

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Application Information

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IPC IPC(8): H01P1/203
CPCH01P1/20381
Inventor 许锋金俊陈洋
Owner NANJING UNIV OF POSTS & TELECOMM
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