A broadband sub-array of U-slotted patches for Ku-band active antenna system

IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010) Pub Date : 1999-07-11 DOI:10.1109/APS.1999.789383

W. Zhang, S. Jeon, S.P. Lee, N. Myung

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引用次数: 1

Abstract

Satellite mobile communications is a key link in the chain of infrastructure of global communications. A ground mobile antenna with broad frequency band, transiently steerable sharp-beam, miniaturized and low profiled structure, is specifically required for various vehicle systems. As a elemental assemblage of the active array antenna system with spatial power combining, a broadband 4/spl times/2 sub-array is developed in advance by using broadband U-slotted microstrip patch radiators and broadband stripline feed network. The main performances of this sub-array are: 23.24% bandwidth for VSWR/spl les/2:1; the beamwidth is stable within the operating band (12.25-14.50 GHz) with (30-32)/spl deg/ in the E-plane and (15-14)/spl deg/ in the H-plane. The slightly higher side-lobe-level may be suppressed by the factor of the whole array; the cross-polar-level in the E-plane is very good, but deteriorated in the H-plane at the high end of the frequency band, which may be improved by replacing the feed type.

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ku波段有源天线系统的宽带u槽贴片子阵列

卫星移动通信是全球通信基础设施链中的关键一环。具有宽频带、瞬态可操纵锐波束、小型化和低轮廓结构的地面移动天线是各种车载系统的特殊需求。作为空间功率组合有源阵列天线系统的基本组成部分，采用宽带u槽微带贴片辐射器和宽带带状线馈电网络，研制了宽带4/spl倍/2子阵列。该子阵列的主要性能是:带宽为23.24%，为VSWR/spl /2:1;在工作频段(12.25 ~ 14.50 GHz)内，波束宽度稳定，e面为(30 ~ 32)/spl度/，h面为(15 ~ 14)/spl度/。略高的旁瓣电平可能被整个阵列的因素所抑制;在e平面的交极能级很好，但在h平面的高频段变差，可以通过更换馈电类型来改善。

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IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)

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