Low-Profile Switched-Beam Antenna Backed by an Artificial Magnetic Conductor for Efficient Close-to-Metal Operation

被引：3

作者：

Lasser, Gregor ^{[1
]}

Mayer, Lukas W. ^{[2
]}

Popovic, Zoya ^{[1
]}

Mecklenbraeuker, Christoph F. ^{[2
]}

机构：

[1] Univ Colorado, Dept Elect Comp & Energy Engn, Boulder, CO 80309 USA

[2] Vienna Univ Technol, Inst Telecommun, Christian Doppler Lab Wireless Technol Sustainabl, A-1040 Vienna, Austria

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2016年 / 64卷 / 04期

关键词：

Antennas; beam steering; efficiency; frequency selective surfaces; metamaterials; radio-frequency identification; SURFACES;

D O I：

10.1109/TAP.2016.2526044

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 paper presents a compact switched-beam antenna (SBA) mounted on the bottom of a car. The antenna and associated circuits read RFID data sensed directly from all four tires. The frequencies of interest are the European UHF RFID band (866 MHz) and the 2.45 GHz ISM-band. In both cases, the antenna is electrically close to the conductive floor of the vehicle. In order to improve performance, dual-band periodic printed surfaces are designed and the efficiency, pattern, and loss are characterized for the antenna mounted above the FSS. In the UHF-band, the size of the assembly is 0.87 lambda(0) x 0.87 lambda(0) x 0.11 lambda(0) and its performance is not sensitive to the position of the conductive car bottom surface. The antenna over FSS assembly has a directivity of 5.6 dB and the efficiency is enhanced by a factor of 2.35 (3.7 dB).

引用

页码：1307 / 1316

页数：10

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