Complementary opening resonance ring and defect ground structure half module substrate integrated waveguide dual-band filter

A complementary opening resonance, half-mode substrate integration technology, applied in the field of filters, can solve the problems of large loss, low power capacity, high processing cost, and achieve the effect of small overall size, high space utilization, and compact structure

Inactive Publication Date: 2014-04-02
SOUTHWEST UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For planar microstrip structure filters, it has the advantages of small size, simple processing, and easy integration, but has the disadvantages of large loss and low power capacity.
Filters based ...

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  • Complementary opening resonance ring and defect ground structure half module substrate integrated waveguide dual-band filter
  • Complementary opening resonance ring and defect ground structure half module substrate integrated waveguide dual-band filter
  • Complementary opening resonance ring and defect ground structure half module substrate integrated waveguide dual-band filter

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0022] Such as Figure 1 to Figure 4 The shown complementary split resonant ring and the dual-band filter with a half-mode substrate integrated waveguide with a defective ground structure include a dielectric substrate, a metal patch is set on the dielectric substrate as the top layer metal 1a, and a metal patch is set on the lower surface as the bottom layer Metal Ground 1b. The complementary split ring resonator structure 2 etched on the top layer metal 1a constitutes the first resonator. The complementary split resonant ring defective ground structure 3 etched on the ground metal patch of the underlying metal ground 1b, the microstrip line 5 is located above the complementary split resonant ring defective ground structure 3, and the center line and the complementary ...

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Abstract

The invention discloses a complementary opening resonance ring and defect ground structure half module substrate integrated waveguide dual-band filter. The dual frequency-band filter is realized by using two resonators. The dual frequency-band filter is a complementary opening resonance ring defect ground structure which is characterized in that a top layer metal is arranged on a medium substrate, a top layer metal ground is arranged on a grounding metal surface, a complementary opening resonance ring structure is etched in the top layer metal and a grounding metal paster is etched. A line of metal through holes, microstrip lines, impedance matching units, an input feed wire and an output feed wire are arranged at one edge of the top layer metal. The complementary opening resonance ring structure can generate one passband and can generate a transmission zero point at the same time; the complementary opening resonance ring defect ground structure and the microstrip lines can generate one passband by coupling, can generate one transmission zero point at the same time and are cascaded to form the dual-band filter. According to the filter, two transmission zero points are introduced, so the out-of-band rejection is improved, the passband selectivity is improved, and the external quality factor is improved by adopting a conical gradual feeding mode.

Description

technical field [0001] The invention relates to a filter applied in a wireless communication system, in particular to a double-band filter with a complementary split resonant ring and a defective ground structure. Background technique [0002] With the development of wireless communication and the continuous increase of communication equipment, the limited frequency resources are becoming increasingly tense. How to efficiently use spectrum resources and develop towards higher frequency bands while also being compatible with various existing communication frequency band resources is a communication system. A key to the development of wireless communications. There is an urgent need for RF filters with high selectivity, small size, low cost, and flexible design. Today's communication systems require simultaneous work in multiple communication frequency bands to save costs, that is, multi-passband low-cost filters have become indispensable devices in these systems. The half-m...

Claims

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Application Information

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IPC IPC(8): H01P1/20H01P1/203
Inventor 黄杰张中华李光林陈志林
Owner SOUTHWEST UNIVERSITY
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