Title :
A periodically perturbed coplanar wave guide transmission line leaky wave antenna
Author :
Stevens, Dale ; Subramanyam, Guru ; Koss, Ken ; Casto, Matt ; Neidhard, Robert ; Pasala, Krishna ; Schneider, Steven ; Radcliffe, Joshua ; Griffith, Henry
Author_Institution :
WPAFB, Dayton
Abstract :
A periodically perturbed coplanar wave guide leaky wave antenna was experimentally verified. The antenna´s performance was studied as a function of the perturbation geometry, specifically, the depth of the periodic perturbation, keeping the width the same. Samples were made with perturbation depths of 0.5 mm, 0.75 mm, 1 mm, and 1.5 mm. A CPW line with a perturbation depth of 1.5 mm showed the highest gain/directivity ~8 dB, as compared to the gain of a reference horn which was ~ 11 dB. It was verified that the beam was scannable by more than 60 degrees using a frequency sweep.
Keywords :
coplanar waveguides; inhomogeneous media; leaky wave antennas; perturbation theory; frequency sweep; leaky wave antenna; periodic perturbation depth; periodically perturbed coplanar wave guide transmission line; perturbation geometry; Antenna measurements; Azimuth; Coplanar transmission lines; Coplanar waveguides; Frequency; Impedance; Leaky wave antennas; Microstrip antennas; Microswitches; Switches; Coplanar waveguide; leaky wave antenna; periodic perturbation;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2007 IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0877-1
Electronic_ISBN :
978-1-4244-0878-8
DOI :
10.1109/APS.2007.4395531
