Full-Metal K-Ka Dual-Band Shared-Aperture Array Antenna Fed by Combined Ridge-Groove Gap Waveguide

被引：78

作者：

Ferrando-Rocher, Miguel ^{[1
]}

Ignacio Herranz-Herruzo, Jose ^{[1
]}

Valero-Nogueira, Alejandro ^{[1
]}

Bernardo-Clemente, Bernardo ^{[1
]}

机构：

[1] Univ Politecn Valencia, Inst Telecomunicac & Aplicac Multimedia ITEAM, E-46022 Valencia, Spain

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2019年 / 18卷 / 07期

关键词：

Array; dual-band antenna; gap waveguide (GW); groove gap waveguide (GGW); K-band; Ka-band; ridge gap waveguide (RGW); SATCOM; shared aperture;

D O I：

10.1109/LAWP.2019.2919928

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This letter presents an 8 x 8 dual-band shared-aperture array antenna operating in K-(19.5-21.5 GHz) and Ka-band (29-31 GHz) using gap waveguide technology. Radiating elements consist of circular apertures located on the top plate of the antenna and excited by two stacked cavities with different diameters for dual-frequency operation. A waffle grid is used on top to increase the effective area of apertures and reduce grating lobes. Each stacked cavity is fed by its appropriate corporate-feeding net-work: The upper feeding layer operates at 20 GHz band, and the lower one at 30 GHz band. As a result, the antenna presents two ports, one for each band, which radiate a directive far-field pattern with linear polarization, orthogonal to each other. Experimental results show impedance and radiation pattern bandwidths larger than 1.5 GHz in both bands.

引用

页码：1463 / 1467

页数：5

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