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An l-band broadband circularly polarized microstrip antenna

A microstrip antenna, circularly polarized technology, applied in the L-band broadband circularly polarized microstrip antenna, antenna field, can solve the problems of narrow impedance bandwidth and circular polarization bandwidth, limited performance, etc., to achieve wide impedance bandwidth and circular polarization. Polarization bandwidth, ease of tuning, effect of broadening impedance bandwidth

Inactive Publication Date: 2015-08-26
DALIAN MARITIME UNIVERSITY
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the inherent impedance bandwidth and circular polarization bandwidth of the microstrip antenna are narrow, and the typical frequency bandwidth is from a few tenths of a percent to a few percent, which greatly limits its performance. Therefore, the development of a broadband circularly polarized microstrip antenna of great significance

Method used

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  • An l-band broadband circularly polarized microstrip antenna
  • An l-band broadband circularly polarized microstrip antenna
  • An l-band broadband circularly polarized microstrip antenna

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Embodiment Construction

[0030] Such as figure 1 , figure 2 , image 3 with Figure 4 An L-band broadband circularly polarized microstrip antenna is shown, which is characterized by comprising an upper radiating antenna dielectric substrate 1 and a lower feeding network dielectric substrate 2; the upper surface of the upper radiating antenna dielectric substrate 1 is printed with a radiation sticker The radiation patch includes an antenna main radiation patch 11 placed in the center and four parasitic radiation patches 12 symmetrically distributed around the antenna main radiation patch 11; the lower surface of the upper radiating antenna dielectric substrate 1 Four coupling patches 13 are printed; the upper surface of the lower feeder network dielectric substrate 2 is provided with a ground plate 21, and the lower surface of the lower feeder network dielectric substrate 2 is printed with a microcomputer with one input end and four output ends. With power division and phase-shifting feeder network 22; ...

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Abstract

The invention discloses an L-waveband broadband circular polarization micro-strip antenna which comprises an upper-layer radiating antenna dielectric substrate and a lower-layer feed network dielectric substrate; a radiation patch is printed on the upper surface of the upper-layer radiating antenna dielectric substrate; four coupling patches are printed on the lower surface of the upper-layer radiating antenna dielectric substrate; an earth plate is arranged on the upper surface of the lower-layer feed network dielectric substrate, and a micro-strip power dividing phase-shifting feed network with one input end and four output ends is printed on the lower surface of the lower-layer feed network dielectric substrate; an air gap is formed between the upper-layer radiating antenna dielectric substrate and the lower-layer feed network dielectric substrate; each coupling patch is connected with one output end of the micro-strip power dividing phase-shifting feed network through a metal probe. The L-waveband broadband circular polarization micro-strip antenna is simple in structure, low in cost, easy to tune, wide in impedance bandwidth and circular polarization bandwidth and suitable for application to a maritime satellite communication system and a satellite positioning navigation system terminal.

Description

Technical field [0001] The invention relates to antenna technology in the field of wireless communication, in particular to an L-band wideband circularly polarized microstrip antenna. Background technique [0002] Broadband Global Local Area Network (BGAN) is the fourth-generation global mobile satellite communication system provided by the International Maritime Satellite Organization (INMARSAT). It absorbs and is compatible with the advantages of 3G communication, and combines portable mobile, broadband and network communications in satellite communications. Demand, it has become a revolutionary communication system that provides safe and reliable audio and video streaming media transmission, e-mail, and network access services to users who are arbitrarily moving around the world. The system works in the L-band, and its receiving and sending frequencies correspond to 1525. ~1550MHz and 1626.5~1660.5MHz. In order to share the same antenna for transmission and reception, the wor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q13/08H01Q21/30H01Q1/50
Inventor 傅世强孔庆功房少军王钟葆
Owner DALIAN MARITIME UNIVERSITY
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