Study of a Low-Profile 2.4-GHz Planar Dipole Antenna Using a High-Impedance Surface With 1-D Varactor Tuning

被引：29

作者：

Cure, David ^{[1
]}

Weller, Thomas M. ^{[1
]}

Miranda, Felix A. ^{[2
]}

机构：

[1] Univ S Florida, Tampa, FL 33620 USA

[2] NASA, John H Glenn Res Ctr, Cleveland, OH 44135 USA

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2013年 / 61卷 / 02期

基金：

美国国家科学基金会;

关键词：

Frequency-selective surfaces (FSS); low-profile antenna; varactor-tuned high-impedance surfaces (HIS); FREQUENCY; DESIGN;

D O I：

10.1109/TAP.2012.2223435

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 theoretical and experimental study has been performed on a low-profile, 2.4-GHz dipole antenna that uses a frequency-selective surface (FSS) with varactor-tuned unit cells. The tunable unit cell is a square patch with a small aperture on either side to accommodate the varactor diodes. The varactors are placed only along one dimension to avoid the use of vias and simplify the dc bias network. An analytical circuit model for this type of electrically asymmetric unit cell is shown. The measured data demonstrate tunability from 2.15 to 2.63 GHz with peak gains at broadside that range from 3.7- to 5-dBi and instantaneous bandwidths of 50 to 280 MHz within the tuning range. It is shown that tuning for optimum performance in the presence of a human-core body phantom can be achieved. The total antenna thickness is approximately lambda/45.

引用

页码：506 / 515

页数：10

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