Linear Phased Array Antenna Fed by the Modified Dielectric Image Line

被引：2

作者：

Liu, Ning ^{[1
]}

Qu, Shi-Wei ^{[1
]}

Yang, Shiwen ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China UESTC, Sch Elect Sci & Engn, Chengdu 611731, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2021年 / 20卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Electronics packaging; Metals; Phased arrays; Electromagnetic waveguides; Dielectrics; Couplings; Mutual coupling; Dielectric image line (DIL); patch antennas; phased arrays; MICROSTRIP; DESIGN; GUIDE;

D O I：

10.1109/LAWP.2021.3061554

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：

A linear phased array antenna fed by the modified dielectric image line (DIL) is proposed in this letter. The array contains 16 subarrays, and one subarray consists of eight patch antenna elements fed by one modified DIL through eight coupling apertures on the ground plane. The modified DIL can enhance the electromagnetic field confinement in the DIL, which is beneficial to reduce the mutual coupling between parallel DILs. According to the measured results, the coupling between two modified DILs has been reduced by about 5 dB compared with that in the original DILs when the length is 160.5 mm. Finally, the proposed array achieves a wide fractional bandwidth of over 20% with voltage standing-wave ratio (VSWR) less than 2.5 when scanning up to +/- 60 degrees in the H-plane in 8 similar to 10 GHz. The isolation between the two adjacent ports is higher than 20 dB. A 16 x 8 array prototype is measured to verify the validity of the design.

引用

页码：733 / 737

页数：5

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