Small-size broadband wide-beam circular polarization microstrip antenna

Abstract

The invention discloses a small-size broadband wide-beam circular polarization microstrip antenna. The small-size broadband wide-beam circular polarization microstrip antenna comprises a plurality of parasitic pasters, a first layer of dielectric slab, a plurality of incentive pasters, a second layer of dielectric slab, a metal floor board, a third layer of dielectric slab, an antenna port and a feed network, wherein the plurality of parasitic pasters are positioned on the upper surface of the first layer of dielectric slab; the plurality of incentive pasters are positioned on the upper surface of the second layer of dielectric slab; the feed network is positioned on the lower surface of the third layer of dielectric slab; the metal floor board is positioned between the second layer of dielectric slab and the third layer of dielectric slab; the parasitic pasters and the incentive pasters are connected with the metal floor board through a metal through hole; the incentive pasters are connected with the feed network through a probe; and the antenna port is fixed on one side of the metal floor board. The small-size broadband wide-beam circular polarization microstrip antenna realizes the broadband wide-beam circular polarization function, has the small-size advantage and can be applied to the field of satellite communication and satellite navigation.

Description

technical field [0001] The invention relates to the field of satellite communication, in particular to a circularly polarized antenna, in particular to a small-sized wide-bandwidth beam circularly polarized microstrip antenna. [0002] Background technique [0003] In recent years, with the rapid development of communication technology, satellite communication technology has been more widely used in daily life and military communication. Circularly polarized antennas are widely used in various satellite communications due to their advantages of suppressing rain and fog interference, anti-multipath reflection, and being able to receive incoming waves of various polarization modes well. Especially in satellite navigation systems, circularly polarized antennas with wider axial ratio bandwidth and wider 3dB axial ratio beamwidth are often used to receive low-power signals. [0004] There are many ways to implement circularly polarized microstrip antennas, which can be di...

AI Technical Summary

Problems solved by technology

In summary, it is difficult to simultaneously satisfy the low profile, wide frequency band and wide beam characteristics of circularly polarized antennas

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