Filter based on substrate integrated waveguide in incomplete mode

A substrate-integrated waveguide and integrated waveguide technology, applied in waveguide devices, electrical components, circuits, etc., can solve the problems of complex filter structure, unfavorable filter and planar circuit integration, and high difficulty in multi-layer structure processing

Inactive Publication Date: 2017-12-26
XIDIAN UNIV
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  • Abstract
  • Description
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Problems solved by technology

This kind of stacked filter has a complex structure and contains many layers, such as the first to third dielectric substrates, and the first to third intermediate metal layers, which

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  • Filter based on substrate integrated waveguide in incomplete mode
  • Filter based on substrate integrated waveguide in incomplete mode
  • Filter based on substrate integrated waveguide in incomplete mode

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Embodiment Construction

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0034] The embodiment of the present invention provides a filter based on the incomplete mode of the substrate integrated waveguide, such as figure 1 As shown, it includes a substrate composed of an upper metal surface 1, an intermediate dielectric layer 2 and a lower metal surface 3. The left side sixteenth mode substrate integrated waveguide resonant cavity 41 is sequentially arranged on the substrate from left to right. , The middle on...

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Abstract

According to the invention, three technical characteristics are utilized for reducing the size of a resonance cavity. First, a substrate integrated waveguide in an incomplete mode is adopted. Second, a small-size CRME (Circular Ring Miniaturized Element) is loaded on the surface of the resonance cavity so as to excite resonant frequency of lower orders and thus the size of the resonance cavity can be reduced. Third, a feeding mode based on combination of a coplanar waveguide and the CRME is adopted. According to the invention, the ultra-small filter based on the substrate integrated waveguide in the incomplete mode is low in loss and good in frequency selection properties and the size of the filter can be reduced substantially. By the design of the novel CRME, the out-of-band suppression property of the filter is improved substantially. By the design of a single-layer PCB, processing, integration with other planar circuits and cost reduction are facilitated.

Description

Technical field [0001] The invention belongs to the technical field of a substrate integrated waveguide filter, and in particular relates to a filter based on a non-integral mode of the substrate integrated waveguide. Background technique [0002] With the rapid development of mobile communication systems, the radio frequency spectrum has become more and more crowded. At the same time, higher requirements are placed on microwave filters, especially higher out-of-band suppression characteristics and smaller volumes. [0003] At present, the substrate integrated waveguide structure commonly used for transmitting microwaves has the advantages of high quality factor and high power capacity, and is often widely used in wireless communication systems. There are also incomplete modes obtained by appropriately designing substrate integrated waveguides, such as one-eighth-mode substrate-integrated waveguide and one-sixteen-mode substrate-integrated waveguide. These incomplete modes can grea...

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Application Information

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IPC IPC(8): H01P1/208
CPCH01P1/208
Inventor 李磊武增强柯伯威杨珂
Owner XIDIAN UNIV
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