Broadband high-gain double-circle polarized patch antenna

Abstract

The invention discloses a broadband high-gain double-circle polarized patch antenna. The broadband high-gain double-circle polarized patch antenna comprises a floor layer, a feed network, square patch arrays, an upper dielectric substrate, a middle dielectric substrate and a lower dielectric substrate, wherein the upper dielectric substrate, the middle dielectric substrate and the lower dielectric substrate are sequentially arranged from top to bottom and are supported separably through dielectric frames. The square patch arrays are adhered to the lower surfaces of the upper dielectric substrate and the middle dielectric substrate. Each square patch array comprises four square units in two-row two-column arrangement. The floor layer is positioned on the upper surface of the lower dielectric substrate. The feed network is etched on the lower surface of the lower dielectric substrate. Eight radiant gaps are etched on the floor layer. The feed network comprises a directional coupler, six power dividers and an air bridge. The feed network divides an input signal into eight channels of signals, feeds the signals into the radiant gaps and feeds electricity upwardly to the square patch arrays through the radiant gaps, and finally, an antenna radiation effect is achieved through middle and upper radiation. The broadband high-gain double-circle polarized antenna is achieved by the aid of a printed circuit process.

Description

technical field [0001] The invention relates to a wide-band high-gain dual-circular polarization patch antenna, which belongs to the field of wireless communication. Background technique [0002] With the rapid development of wireless communication, radio frequency identification, radar and other technologies and the expansion of application scope, as the front end of microwave and millimeter wave systems, antennas need to work in various polarization modes and harsh weather conditions, and the single polarization mode has become more and more difficult. It is increasingly unable to meet the needs of practical applications. [0003] Circularly polarized waves are superimposed by linearly polarized waves with equal amplitude and phase difference of 90 degrees; linearly polarized waves can also be superimposed by circularly polarized waves with different hand directions. Therefore, linearly polarized waves with different orientations can be received by circularly polarized an...

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Problems solved by technology

However, in the prior art, antennas rarely have wide bandwidth, high gain

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