One point coaxial feed low profile back-cavity circularly polarized antenna

A circularly polarized antenna and coaxial feeding technology, applied in the direction of slot antenna, circuit, radiation element structure, etc., can solve problems such as complex processing, achieve less structural parameters, shorten design and optimization time, outline and Production cost reduction effect

Inactive Publication Date: 2011-10-05
舟山乐讯智能科技有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Compared with the previous cavity-backed circularly polarized antenna, this implementation is greatly reduced in size, but its processing is still relatively complicated

Method used

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  • One point coaxial feed low profile back-cavity circularly polarized antenna
  • One point coaxial feed low profile back-cavity circularly polarized antenna
  • One point coaxial feed low profile back-cavity circularly polarized antenna

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Embodiment Construction

[0021] Such as figure 1 with 2 As shown, the single-point coaxial feed low-profile cavity-backed circularly polarized antenna includes a Rogers5880 dielectric substrate 5 with a thickness of 0.5 mm, and the two sides of the dielectric substrate 5 are coated with metal layers, which are the upper metal layer 4 and the lower metal layer 6 respectively. , wherein the lower metal layer 6 is used as the stratum. Through the upper metal layer 4, the dielectric substrate 5 and the lower metal layer 6, a diameter of 1 mm is opened, and the inner wall of the through hole is plated with metal to form a metallized through hole 2; a plurality of metallized through holes 2 are arranged in a circular order to form a The circular substrate-integrated waveguide cavity and the metallized through-holes 2 constituting the substrate-integrated waveguide cavity have the same hole spacing, which is 1.35 mm. Such as image 3 , the upper metal layer 4 is etched in the area of ​​the substrate integ...

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Abstract

The invention relates to a single-pointed coaxially feeding lowly-outlined cavity-backed circularly polarized antenna. The common cavity-backed circularly polarized antenna has a complex structure, large size, and a high manufacturing cost. In the invention, a metal layer is plated on the two faces of the dielectric substrate; an upper metal layer is etched with two strips of vertical rectangularslots used for radiating the energy. A plurality of plated-through holes aligned circularly is installed by penetrating the upper metal layer, the dielectric substrate and a lower metal layer, thus forming a round cavity. A coaxial probe as a feeding structure is introduced by penetrating the lower metal layer and the dielectric substrate at the proper location of an angular bisector of the two strips of vertical rectangular radiating slots in the cavity region. Compared with the cavity-backed circularly polarized antenna formed by the existing metal cavity, the cavity adopted by the invention is manufactured by the common PCB technology, thus downsizing the antenna outline and reducing the manufacturing cost.

Description

technical field [0001] The invention belongs to the field of microwave technology, and relates to a single-point coaxial feed low-profile cavity-backed circularly polarized antenna based on substrate integrated waveguide technology, which can be used as an antenna for radio frequency transceiver front ends and is widely used in mobile communications, satellite communications, Radar and other wireless communication systems are used to solve the polarization mismatch problem caused by the Faraday electromagnetic rotation effect, and can also play a role in suppressing rain and fog interference and anti-multipath reflection. Background technique [0002] As a key component of a communication system, antennas are widely used in wireless communication occasions. Due to the Faraday rotation effect of radio wave propagation in space and the uncertainty of the position of the receiving antenna in mobile communication, if a traditional single-polarized antenna is used as the transcei...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q13/10H01Q13/06
Inventor 罗国清孙玲玲
Owner 舟山乐讯智能科技有限公司
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