A circularly polarized microstrip antenna and a method for widening the bandwidth of the circularly polarized microstrip antenna

A technology of microstrip antenna and circular polarization, which is applied in the direction of antenna, antenna grounding switch structure connection, electrical components, etc., can solve the problems of complex feeder lines, achieve the effect of small impact on circular polarization performance and expand bandwidth

Inactive Publication Date: 2018-08-28
遵义市华颖监测技术有限公司
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Problems solved by technology

Dual-feed or multi-feed antennas achieve circular polarization with good axial ratio performance, but the feed line is complex, especially when the volume is small

Method used

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  • A circularly polarized microstrip antenna and a method for widening the bandwidth of the circularly polarized microstrip antenna
  • A circularly polarized microstrip antenna and a method for widening the bandwidth of the circularly polarized microstrip antenna
  • A circularly polarized microstrip antenna and a method for widening the bandwidth of the circularly polarized microstrip antenna

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Embodiment Construction

[0026] The present invention provides a circularly polarized microstrip antenna and a method for widening the bandwidth of the circularly polarized microstrip antenna. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail with reference to the accompanying drawings and examples . It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] see figure 1 and combine figure 2 As shown, the circularly polarized microstrip antenna provided by the present invention includes a reflector 3, which is a ground plate. The dielectric layer 2 is arranged on the upper part of the reflection plate 3, and the radiation patch 1 is also arranged on the dielectric layer. The circularly polarized antenna also includes a coaxial feeding probe 4 built between the radiation patch 1 and th...

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Abstract

The invention discloses a circular polarization microstrip antenna and a method for increasing bandwidth thereof. The circular polarization microstrip antenna comprises a reflecting plate, a medium layer with a radiation paster arranged on the upper part of the reflecting part, a coaxial feed probe internally arranged between a radiation paster and the reflecting plate, and a short-circuited probe or a via-hole coupled to and excited by the coaxial feed probe so as to form polarized radiation. The radiation paster is arranged on the medium layer. The short-circuited probe or the via-hole is arranged between and connects the radiation paster and the reflecting plate. The short-circuited probe is added in the circular polarization microstrip antenna, and polarized radiation is formed via coupling and excitation between the coaxial feed probe and the short-circuited probe, so bandwidth can be increased. In addition, compared with the method for achieving polarization via a single feed point chamfer, performance of the polarization is less affected by debugging of the antenna.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a single-feed circularly polarized microstrip antenna and a method for widening the bandwidth of the circularly polarized microstrip antenna. Background technique [0002] Compared with linearly polarized antennas, circularly polarized antennas have many important advantages, and circularly polarized antennas are a key technology in many wireless systems, including satellite communications, mobile communications, global satellite navigation systems, wireless sensors, RFID radio frequency Identification, Wireless Power Transfer, Wireless Local Area Network WLAN, Wireless Personal Area Network WPAN, Global Microwave Interconnection Access WiMAX and Direct Broadcast Service (DBS) TV reception systems. Much progress has been made in recent years in the research and development of circularly polarized antennas. [0003] The first advantage of circularly polarized antennas is that th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/50H01Q19/10
Inventor 王薪
Owner 遵义市华颖监测技术有限公司
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