Improved design of a CRLH leaky-wave antenna and its application for DoA estimation

Author

Patron, Damiano ; Paaso, Henna ; Mammela, Aarne ; Piazza, D. ; Dandekar, Kapil R.

Author_Institution

Dept. of Electr. & Comput. Eng., Drexel Univ., Philadelphia, PA, USA

fYear

2013

fDate

9-13 Sept. 2013

Firstpage

1343

Lastpage

1346

Abstract

In this paper, we propose a composite right/left handed two port leaky-wave antenna (CRLH-LWA) having reduced size and enhanced beam steering capabilities. The antenna is made of a cascade of metamaterial CRLH unit cells, populated with varactor diodes. By properly designing the CRLH unit cell, the propagation constant has been optimized within the radiated zone achieving maximum beam steering and keeping a nearly constant gain for all of the beam configurations. Through a modified multiple signal classification (MUSIC) algorithm, we employed the antenna for direction of arrival (DoA) estimation. Validation of the algorithm along with the proposed CRLH-LWA has been conducted in an anechoic chamber and the estimated DoA results are in good agreement with the predicted angles.

Keywords

anechoic chambers (electromagnetic); direction-of-arrival estimation; microwave antennas; signal classification; varactors; CRLH leaky-wave antenna; DoA estimation; anechoic chamber; beam configurations; direction of arrival estimation; maximum beam steering; metamaterial CRLH unit cells; multiple signal classification algorithm; propagation constant; varactor diodes; Algorithm design and analysis; Antenna measurements; Beam steering; Direction-of-arrival estimation; Estimation; Multiple signal classification; Ports (Computers);

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation in Wireless Communications (APWC), 2013 IEEE-APS Topical Conference on

Conference_Location

Torino

Type

conf

DOI

10.1109/APWC.2013.6624937

Filename

6624937