Implementation of a Cognitive Radio Front-End Using Rotatable Controlled Reconfigurable Antennas

被引：133

作者：

Tawk, Y. ^{[1
]}

Costantine, J. ^{[2
]}

Avery, K. ^{[3
]}

Christodoulou, C. G. ^{[1
]}

机构：

[1] Univ New Mexico, Dept Elect & Comp Engn, Albuquerque, NM 87131 USA

[2] Calif State Univ Fullerton, Dept Elect Engn, Fullerton, CA 92634 USA

[3] USAF, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM USA

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2011年 / 59卷 / 05期

关键词：

Cognitive radio; reconfigurable antenna; stepper motor; UWB; DESIGN;

D O I：

10.1109/TAP.2011.2122239

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 communication presents a new antenna system designed for cognitive radio applications. The antenna structure consists of a UWB antenna and a frequency reconfigurable antenna system. The UWB antenna scans the channel to discover "white space" frequency bands while tuning the reconfigurable section to communicate within these bands. The frequency agility is achieved via a rotational motion of the antenna patch. The rotation is controlled by a stepper motor mounted on the back of the antenna structure. The motor's rotational motion is controlled by LABVIEW on a computer connected to the motor through its parallel port. The computer's parallel port is connected to a NPN Darlington array that is used to drive the stepper motor. The antenna has been simulated with the driving motor being taken into consideration. A good agreement is found between the simulated and the measured antenna radiation properties.

引用

页码：1773 / 1778

页数：7

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