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C-wave-band miniature broadband wide-beam circular polarization microstrip antenna

A technology of microstrip antenna and wide bandwidth, applied in the field of antenna, can solve the problems of narrow working frequency band, difficult to meet the broadband of base station communication, wide beam, half-power beam width and 3dB beam width are not wide enough, to achieve the expansion of impedance bandwidth, Improve the 3dB axial ratio beam width and expand the effect of beam width

Pending Publication Date: 2019-04-26
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

[0004] The present invention aims at the existing circularly polarized microstrip antenna with narrow operating frequency band, half-power beam width and 3dB beam width are not wide enough, and it is difficult to meet the requirements of base station communication broadband and wide beam, and provides a miniaturized wide bandwidth of C-band Beam Circularly Polarized Microstrip Antenna

Method used

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  • C-wave-band miniature broadband wide-beam circular polarization microstrip antenna
  • C-wave-band miniature broadband wide-beam circular polarization microstrip antenna
  • C-wave-band miniature broadband wide-beam circular polarization microstrip antenna

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Embodiment Construction

[0049] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific examples and with reference to the accompanying drawings. It should be noted that the directional terms mentioned in the examples, such as "upper", "lower", "middle", "left", "right", "front", "rear", etc., are only referring to the directions of the drawings. Therefore, the directions used are only for illustration and are not intended to limit the protection scope of the present invention.

[0050] see figure 1 A C-band miniaturized wide-bandwidth beam circularly polarized microstrip antenna consists of a dielectric cavity layer 1 , a parasitic layer 2 , a connection layer 3 , a radiation layer 4 and a feed layer 5 . The dielectric cavity layer 1, the parasitic layer 2, the connection layer 3, the radiation layer 4, and the feed layer 5 are stacked in sequence from top to bottom w...

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Abstract

The invention discloses a C-wave-band miniature broadband wide-beam circular polarization microstrip antenna. The C-wave-band miniature broadband wide-beam circular polarization microstrip antenna iscomposed of a medium cavity layer, a parasitic layer, a connection layer, a radiation layer and a feed layer which are stacked up and are attached to one another in sequence from top to bottom. Circular polarization is achieved through double-point feed, a feed network adopts an equal-amplitude Wilkinson power divider which divides one into two and has the 90-degree phase position difference. Radiation of a grounded metal column is similar to that of a monopole antenna, the radiation pattern of the grounded metal column is omni-directional, and the metal column is loaded so that the half powerbeam width of the microstrip antenna can be increased. A square ring generates a horizontal polarization electric field which is used for balancing an additional vertical polarization electric fieldof the metal column, the beam width is increased, and meanwhile the axial ratio property of the antenna is improved. By introducing the stacked-up structure of parasitic patches, the impedance bandwidth of the antenna is increased, the parasitic patches are subjected to circular arc chamfering, and the axial ratio bandwidth and 3dB axial ratio beam width of the antenna are further improved.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a C-band miniaturized wide-bandwidth beam circularly polarized microstrip antenna. Background technique [0002] In recent years, with the rapid development of communication technology, miniaturized circularly polarized microstrip antennas with wide bandwidth beams have been favored by many researchers. This is because the microstrip antenna has a series of outstanding advantages such as small size, light weight and low cost. Circular polarization has strong anti-rain, fog, anti-multipath and other interference capabilities, and can meet the strict requirements of antennas in various radio fields such as radar, remote sensing, satellite communication, radio frequency identification, and electronic countermeasures. A wide frequency band can provide abundant spectrum resources for the communication system, and a wide beam can cover a wide spatial range, which greatly improves the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/38H01Q1/48H01Q1/50
CPCH01Q1/36H01Q1/38H01Q1/48H01Q1/50
Inventor 姜兴谢明聪彭麟廖欣李晓峰沈湘赵其祥王璟珂祝雪龙
Owner GUILIN UNIV OF ELECTRONIC TECH
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