A leaky-wave antenna for beam steering in forward and backward directions

Author

Karmokar, Debabrata K. ; Esselle, Karu P. ; Thalakotuna, D.N.P. ; Heimlich, Michael ; Matekovits, Ladislau

Author_Institution

Dept. of Eng., Macquarie Univ., Sydney, NSW, Australia

fYear

2013

fDate

17-19 April 2013

Firstpage

47

Lastpage

50

Abstract

A half-width microstrip leaky-wave antenna (HW-MLWA) is designed with forward (broadside-endfire) and backward (broadside-backfire) scanning capability. One feed and 50 Ω load are connected at each end of the radiating element with a simple feed network and controlled switches that allow the antenna to scan in both forward and backward directions. The main beam is steered at any operating frequency by changing the admittance between the free edge of the radiating element and the ground. This is done by connecting 30 lumped capacitors (1 pF each) to the free edge of the radiating element with a total of 30 switches and vias. The antenna can scan a range of 34° in both forward and backward directions.

Keywords

beam steering; capacitors; leaky wave antennas; microstrip antennas; backward direction; backward scanning; beam steering; broadside-backfire scanning; broadside-endfire scanning; capacitance 1 pF; feed network; forward direction; forward scanning; half width microstrip antenna; leaky wave antenna; lumped capacitor; radiating element; Capacitors; Feeds; Leaky wave antennas; Microstrip; Microstrip antennas; Switches; Reconfigurable antenna; backward scanning; cognitive radio; forward scanning; leaky-wave antenna;

fLanguage

English

Publisher

ieee

Conference_Titel

TENCON Spring Conference, 2013 IEEE

Conference_Location

Sydney, NSW

Print_ISBN

978-1-4673-6347-1

Type

conf

DOI

10.1109/TENCONSpring.2013.6584415

Filename

6584415