Title :
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
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;
Conference_Titel :
TENCON Spring Conference, 2013 IEEE
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4673-6347-1
DOI :
10.1109/TENCONSpring.2013.6584415
