Substrate-integrated waveguide bandpass filter based on a novel complementary split-ring resonator structure

A complementary aperture resonance, substrate integrated waveguide technology, applied in the microwave field, can solve the problems of narrow conduction band, small relative bandwidth, poor frequency selectivity outside the band, etc. performance effect

Active Publication Date: 2019-01-22
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the substrate-integrated waveguide loaded with the traditional complementary split-ring resonator structure has narrow passband, relatively small bandwidth, and poor out-of-band frequency selectivity, which needs to be improved.

Method used

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  • Substrate-integrated waveguide bandpass filter based on a novel complementary split-ring resonator structure
  • Substrate-integrated waveguide bandpass filter based on a novel complementary split-ring resonator structure
  • Substrate-integrated waveguide bandpass filter based on a novel complementary split-ring resonator structure

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Embodiment Construction

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0022] The present invention is based on the substrate integrated waveguide bandpass filter of the novel complementary split resonant ring structure, such as figure 1 shown, including dielectric substrates. Such as figure 2 As shown, a metal layer with the same width as the dielectric substrate is provided in the middle of the upper surface of the dielectric substrate, and a row of equidistantly arranged metal pillars with the same diameter are embedded in the two long sides of the dielectric substrate. Equal height, connecting the upper...

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Abstract

The invention discloses a substrate-integrated waveguide bandpass filter based on a novel complementary split resonant ring structure, which includes a dielectric substrate, a microstrip transmission line, a coplanar waveguide transition structure, two rows of metal pillars, a metal layer located on the upper surface of the dielectric substrate, The metal ground plate located under the dielectric substrate, and at least one novel complementary split resonant ring structure located on the metal layer on the upper surface. Among them, the new complementary split resonant ring structure is used to generate the passband, and the coplanar waveguide transition is used to improve the passband performance. The invention adopts a novel complementary split resonant ring structure. Compared with the traditional resonant ring structure, the bandwidth of the substrate integrated waveguide bandpass filter is improved, and the out-of-band selectivity is better.

Description

technical field [0001] The invention relates to a substrate integrated waveguide bandpass filter based on a novel complementary split resonant ring structure, which belongs to the field of microwave technology. Background technique [0002] In early microwave systems, metal waveguides were usually used as the transmission line medium. This is due to the high quality factor of the metal waveguide structure, which can operate with high power handling and low losses. On the other hand, metallic waveguides are bulky and costly to process, making them difficult to integrate in modern microwave systems. In order to adapt to modern microwave and millimeter wave systems, scholars have proposed substrate-integrated waveguide technology on the basis of microstrip structures. Since substrate-integrated waveguides inherit the characteristics of traditional metal waveguides such as low radiation loss and strong anti-interference, and are easy to integrate into planar microwave circuits...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/20
CPCH01P1/2002
Inventor 许锋濮菁菁
Owner NANJING UNIV OF POSTS & TELECOMM
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