Wideband omnidirectional circularly-polarized printed antenna of L-shaped load improved floor

A printed antenna and circularly polarized technology, applied in the field of broadband omnidirectional circularly polarized printed antennas, can solve the problems of narrow impedance bandwidth and axial ratio bandwidth, and achieve the effects of easy integration, light weight and low profile

Inactive Publication Date: 2017-01-04
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the impedance bandwidth and the axial ratio bandwidth of the existing broadband omnidirectional circularly polarized printed antenna are too narrow, and to provide a broadband omnidirectional circularly polarized printed antenna with L-shaped loading and improved floor

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  • Wideband omnidirectional circularly-polarized printed antenna of L-shaped load improved floor
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  • Wideband omnidirectional circularly-polarized printed antenna of L-shaped load improved floor

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specific Embodiment approach 1

[0029] Specific implementation mode one: the following combination Figure 1 to Figure 5 Describe this embodiment, the L-shaped broadband omnidirectional circularly polarized printed antenna with improved floor loading described in this embodiment includes a dielectric substrate 1, and it also includes an upper radiation patch 2 and a lower floor 3,

[0030] Both the dielectric substrate 1 and the upper radiation patch 2 are circular; the lower floor 3 is a circular metal floor with L-shaped branches 3-1 on the outer circumference;

[0031] The upper radiation patch 2 is printed on the upper surface of the dielectric substrate 1, and the lower floor 3 is printed on the lower surface of the dielectric substrate 1. The centers of the dielectric substrate 1, the upper radiation patch 2 and the lower floor 3 are coaxial, and coaxial Probe feed;

[0032] The corresponding positions of the dielectric substrate 1, the upper radiation patch 2 and the lower floor 3 are uniformly distr...

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Abstract

The invention discloses a wideband omnidirectional circularly-polarized printed antenna of an L-shaped load improved floor, and belongs to the technical field of omnidirectional circularly-polarized printed antennas. The wideband omnidirectional circularly-polarized printed antenna solves the problems of too narrow impedance bandwidth and axial ratio bandwidth existing in an existing wideband omnidirectional circularly-polarized printed antenna. A dielectric substrate and an upper radiation patch of the printed antenna are circular respectively; a lower floor is a circular metal floor with L-shaped branches on the outer circumference; the upper radiation patch is printed on the upper surface of the dielectric substrate, the lower floor is printed on the lower surface of the dielectric substrate, the centers of circles of the dielectric substrate, the upper radiation patch and the lower floor are coaxial, and coaxial probe feed is adopted; a plurality of drill holes are uniformly formed in the dielectric substrate, the upper radiation patch and the lower floor at corresponding positions along the circumferential direction, and the corresponding drill holes in the dielectric substrate, the upper radiation patch and the lower floor are connected through metal via holes; and five to ten L-shaped branches are uniformly distributed on the outer circumference of the lower floor. The printed antenna is a wideband omnidirectional circularly-polarized printed antenna.

Description

technical field [0001] The invention relates to an omnidirectional circularly polarized printed antenna, in particular to a broadband omnidirectional circularly polarized printed antenna with an L-shaped loading improved floor. Background technique [0002] Omnidirectional antennas can provide larger signal coverage than traditional directional antennas, and it can maintain real-time communication between vehicle-mounted equipment or mobile terminals and targets at different azimuths around them; circularly polarized antennas can effectively suppress multipath fading and polarization loss. The loss caused by matching can ensure the stability of signal transmission; printed antennas have very broad application prospects due to their advantages such as low profile, easy conformality, easy integration, and low cost. The broadband omnidirectional circularly polarized printed antenna combines the excellent antenna characteristics of low profile, broadband, omnidirectionality and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50
CPCH01Q1/38H01Q1/50
Inventor 张赫谷海川宗华
Owner HARBIN INST OF TECH
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