Dual-Band Dual-Circularly Polarized Shared-Aperture Antenna for UHF-wave and Millimeter-wave applications

Haobin Zheng, Siyu Li, Chuang Wang, W. Cao
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引用次数: 1

Abstract

In this paper, a dual-band dual-circularly polarized shared-aperture antenna for UHF-wave (0.3-3GHz) and millimeter-wave (30-300GHz) bands is proposed. In the millimeter-wave band, the antenna adopts a planar reflect array antenna. In the UHF band, the metal ground of Millimeter-wave reflectarray is reused as its radiation patch., so as to realize the dual-band shared-aperture. The planar reflect array antenna uses circularly polarized microstrip patch antenna as the feed source. Different phase shifts are realized by the size of each microstrip patch on the control plane, and the phase delay of the feed irradiation to the array surface is compensated to realize in-phase radiation and achieve high far-field gain. The low-frequency antenna uses a double-port feed with equal amplitude and phase difference of 90° to realize circularly polarized wave radiation. In the millimeter-wave band, the bandwidth covers 29.5-33GHz and the gain can reach 27.5dBic. In the UHF band, the operating frequency band is 0.975-0.988GHz, and the gain can reach 6.5dBic. It has potential application value in UHF-wave and millimeter-wave bands.
用于超高频和毫米波应用的双频双圆极化共孔径天线
本文提出了一种适用于超高频(0.3-3GHz)和毫米波(30-300GHz)频段的双频双圆极化共孔径天线。在毫米波波段,天线采用平面反射阵列天线。在超高频波段,毫米波反射射线的金属地作为其辐射贴片被重复利用。,从而实现双频共享孔径。平面反射阵列天线采用圆极化微带贴片天线作为馈源。通过控制平面上每个微带贴片的大小实现不同的相移,并补偿馈电辐射到阵列表面的相位延迟,实现同相辐射,获得高远场增益。低频天线采用90°等幅相位差的双口馈电,实现圆极化波辐射。在毫米波频段,带宽覆盖29.5-33GHz,增益可达27.5dBic。在UHF频段,工作频段为0.975-0.988GHz,增益可达6.5dBic。在超高频和毫米波波段具有潜在的应用价值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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