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Filtering antenna based on metal integrated structure

A filter antenna and metal technology, applied in the field of filter antennas and filter antennas based on metal integrated structure, can solve the problems of inability to suppress high-order harmonics, signal interference, power loss, etc., and achieve high squareness, high Q value, Design and process simple effects

Active Publication Date: 2017-05-10
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the above-mentioned filter antennas have good filter selectivity, they cannot suppress high-order harmonics, and the radiation of high-order harmonics will cause additional power loss and signal interference

Method used

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  • Filtering antenna based on metal integrated structure
  • Filtering antenna based on metal integrated structure
  • Filtering antenna based on metal integrated structure

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Embodiment 1

[0036] Such as Figure 1 ~ Figure 4 As shown, the filter antenna of this embodiment includes a metal resonant cavity 1 , a conductor assembly, a metal antenna cavity 2 and a probe 3 .

[0037] The metal resonant cavity 1 is a rectangular metal resonant cavity, and a metal plate 4 is embedded in it, and two rectangular groove lines 5 are opened on the metal plate 4, and the two rectangular groove lines 5 are left and right symmetrical. A rectangular slot line 5 realizes a filter circuit with high frequency selectivity.

[0038]The conductor assembly is composed of a coaxial outer conductor 6 and a coaxial inner conductor 7, the coaxial outer conductor 6 is fixed on the left wall of the metal resonant cavity 1, and one end of the coaxial inner conductor 7 is connected to the coaxial outer conductor 7. The conductor 6 is connected, and the other end is connected to the left end of the metal plate 4 after passing through the left wall of the metal resonant cavity 1 , the energy i...

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Abstract

The invention discloses a filtering antenna based on a metal integrated structure. The filtering antenna comprises a metal resonant cavity, a conductor assembly, a metal antenna cavity and a probe, wherein a metal plate is embedded in the metal resonant cavity; slot lines are arranged on the metal plate; the top of the metal antenna cavity is open while the rest parts are closed; the conductor assembly is fixed on the left wall of the metal resonant cavity, and connected with the left end of the metal plate; a circular through hole is formed between the right wall of the metal resonant cavity and the left wall of the metal antenna cavity; and one end of the probe passes through the center of the circular through hole to be connected with the right end of the metal plate while the other end of the probe is suspended and positioned in the metal antenna cavity. The filtering antenna can realize filtering and high antenna radiation performance; based on a multimode theory, the antenna is high in radiation bandwidth and high in frequency selectivity; and meanwhile, the filtering antenna has the advantages of small size, simple design, easy processing, good performance and the like; and requirement of a modern communication system can be well satisfied.

Description

technical field [0001] The invention relates to a filter antenna, in particular to a filter antenna based on a metal integrated structure, belonging to the field of wireless communication. Background technique [0002] The filter antenna is an important device at the transmitting end and the receiving end of the modern communication system. In addition to receiving and sending signals, it also separates the signals, allowing useful signals to pass through without attenuation as much as possible, and for useless signals. The largest possible attenuation suppresses its passage, and the filtering, sending and receiving of signals can be realized. With the development of wireless communication technology, the frequency band between signals becomes narrower and narrower, which puts forward higher requirements on the specification and reliability of the antenna. The filter antenna has the advantages of high frequency selectivity, low insertion loss, large power capacity, and stab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/52H01Q13/18
CPCH01Q1/36H01Q1/52H01Q13/18Y02D30/70
Inventor 王世伟郑炳龙林景裕
Owner SOUTH CHINA UNIV OF TECH
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