Compact type plane dual-band omnidirectional circularly polarized antenna

A circularly polarized antenna, compact technology, applied in the direction of antenna, antenna support/installation device, and device that enables the antenna to work in different bands at the same time, it can solve the problems of poor antenna input matching, narrow impedance bandwidth, etc., and achieve a cross-section The effect of low, small size, and good circular polarization characteristics

Inactive Publication Date: 2014-12-31
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, some scholars have proposed an omnidirectional circularly polarized antenna with a planar structure, but the input matching of the antenna is poor, the impedance bandwidth is narrow, and it is limited to single-frequency design

Method used

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  • Compact type plane dual-band omnidirectional circularly polarized antenna
  • Compact type plane dual-band omnidirectional circularly polarized antenna
  • Compact type plane dual-band omnidirectional circularly polarized antenna

Examples

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Embodiment Construction

[0024] Such as Picture 1-1 with Figure 1-2 The shown compact planar dual-frequency omnidirectional circularly polarized antenna includes capacitive patch 1, radiating patch 2, floor 3, central shorting post 4, dielectric substrate 5, fixing screw 6, support sleeve 7, input connector 8 , Feed probe 9 and protection hole 10. Among them, the capacitance patch 1 and the radiation patch 2 are printed on the dielectric substrate I51 through PCB circuit processing technology, the floor 3 is printed on the dielectric substrate II52, the dielectric substrate I51 and the dielectric substrate II52 are fixed together by plastic screws 6, and A plastic support sleeve 7 is provided at the fixing screw to maintain the air layer gap between the radiation patch 2 and the dielectric substrate II 52 . The capacitive patch 1 is connected to the inner conductor of the input connector 8 through the feeding probe 9 . In order to avoid a short circuit between the radiation patch 2 and the feeding...

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Abstract

The invention discloses a compact type plane dual-band omnidirectional circularly polarized antenna. The compact type plane dual-band omnidirectional circularly polarized antenna is characterized by comprising a plane radiating antenna, a center shorting pin, an input connector and a feed probe; the plane radiating antenna sequentially comprises a capacitor chip, a medium substrate I, a radiating chip, a medium substrate II and a floor from top to bottom, and an air layer is arranged between the radiating chip and the medium substrate II; the capacitor chip is connected with an inner conductor of the input connector through the feed probe, protection holes are arranged at corresponding positions on the radiating chip and the floor, the feed probe penetrates through the positions on the radiating chip and the floor, and inner diameters of the protection holes are larger than the diameter of the feed probe; and the radiating chip is composed of a primary round radiation chip and three groups of radiating units which are of same structures, the three groups of radiating units are loaded on the periphery of the primary round radiation chip and composed of six arc vibrators, and each group of radiating units is composed of two arc vibrators with different length. The antenna has the advantages of being good in omnidirectional radiation, good in circular polarization in the ranges of 360 degrees on a plane and flexible in dual-band ratio.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a compact planar dual-frequency omnidirectional circularly polarized antenna. Background technique [0002] As the front-end equipment of the wireless communication system, the antenna plays an extremely important role in the communication quality. In modern wireless communication systems, purely linearly polarized antennas are difficult to meet people's needs, and omnidirectional circularly polarized antennas are more and more widely used. In many systems, it is required to use omnidirectional circularly polarized antennas to achieve omnidirectional coverage of circularly polarized radio wave signals or to receive incoming waves with arbitrary polarization in any direction. In addition, the omnidirectionality of the directional diagram makes it widely used in many fields such as remote sensing and telemetry, communication, radar, electronic reconnaissance and electronic interf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q5/01H01Q1/12H01Q5/10
Inventor 王钟葆房少军王强
Owner DALIAN MARITIME UNIVERSITY
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