Title :
Segmented circular strip planar leaky-wave antenna designs for broadside radiation and one-sided beam scanning
Author :
Podilchak, Symon K. ; Freundorfer, Al P. ; Antar, Yahia M M
Author_Institution :
R. Mil. Coll. of Canada, Kingston, ON, Canada
Abstract :
Planar antenna designs that utilize surface waves (SWs) for leaky wave (LW) excitation are investigated for millimeter wave frequencies of operation. Surface-wave launchers (SWLs) are employed as the antenna source generating cylindrical SWs for bound propagation on a grounded dielectric slab (GDS). By the addition of a segmented circular strip grating configuration, a partially reflecting surface (PRS) can be realized, providing suitable conditions for 2-D leaky-wave radiation. Directive pencil beam patterns at broadside, with gain values greater than 12 dBi at 19.5 GHz, can be achieved.
Keywords :
antenna radiation patterns; directive antennas; electromagnetic wave propagation; leaky wave antennas; millimetre wave antennas; planar antennas; antenna source; bound propagation; broadside radiation; directive pencil beam pattern; frequency 19.5 GHz; grounded dielectric slab; leaky wave excitation; leaky-wave radiation; millimeter wave frequency; one-sided beam scanning; partially reflecting surface; segmented circular strip grating configuration; segmented circular strip planar leaky-wave antenna design; surface-wave launcher; Antennas and propagation; Dielectrics; Directive antennas; Frequency; Gratings; Leaky wave antennas; Millimeter wave propagation; Planar arrays; Slabs; Surface waves;
Conference_Titel :
Antenna Technology (iWAT), 2010 International Workshop on
Conference_Location :
Lisbon
Print_ISBN :
978-1-4244-4883-8
Electronic_ISBN :
978-1-4244-4885-2
DOI :
10.1109/IWAT.2010.5464751
