A novel reflective surface for an UHF spiral antenna

被引：37

作者：

Kramer, Brad A. ^{[1
]}

Koulouridis, Stavros ^{[1
]}

Chen, Chi-Chih ^{[1
]}

Volakis, John L. ^{[1
]}

机构：

[1] Ohio State Univ, Dept Elect & Comp Engn, ElectroSci Lab, Columbus, OH 43212 USA

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2006年 / 5卷

关键词：

conformal anntennas; ferrites; spiral antennas; UHF antennas;

D O I：

10.1109/LAWP.2005.863613

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：

As is well known, metallic cavity backings reduce antenna gain particularly for broadband configurations at low frequencies. This letter presents a novel reflective surface consisting of a ferrite tile with variable conductive coating as a backing for a conformal UHF spiral antenna. The ferrite material is used in the outer region to preserve the free-space antenna gain at low frequencies. Toward the center, the backing tapers to a conductive coating making it suitable for high frequency operation. It is shown that this hybrid surface (ferrite to metallic) improves the antenna performance significantly at lower frequencies without compromising the high frequency gain.

引用

页码：32 / 34

页数：3

共 4 条

[1]

Abramson M.A., 2002, THESIS RICE U HOUSTO

[2]

DAVID LC, 1999, FORTRAN GENETIC ALGO

[3] The design synthesis of multiband artificial magnetic conductors using high impedance frequency selective surfaces [J].

Kern, DJ ;

Werner, DH ;

Monorchio, A ;

Lanuzza, L ;

Wilhelm, MJ .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2005, 53 (01) :8-17

[4] Reflection phase characterizations of the EBG ground plane for low profile wire antenna applications [J].

Yang, F ;

Rahmat-Samii, Y .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2003, 51 (10) :2691-2703

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