Title :
Radiation Characteristics of Mushroom-Like PPW LWAs: Analysis and Experimental Verification
Author :
Gomez-Diaz, J. Sebastian ; Alvarez-Melcon, A. ; Bertuch, Thomas
Author_Institution :
Tech. Univ. of Cartagena, Cartagena, Spain
fDate :
7/3/1905 12:00:00 AM
Abstract :
The radiation characteristics of mushroom-like parallel-plate waveguide composite right/left-handed leaky-wave antennas (PPW CRLH LWAs) are presented, analyzed, mathematically modeled, and experimentally verified. For this purpose, a frequency-dependent formulation, based on a dispersive circuital model of the antenna, is proposed. The formulation inherently takes into account the mutual coupling between the slots, radiation losses, reactive fields, and the fluctuations of the radiated power with frequency. Very good agreement in the 1-D and 2-D radiation patterns obtained by the proposed formulation and the measured results from a PPW CRLH LWA prototype is found, validating both the antenna radiating properties and the proposed theory.
Keywords :
waveguide antennas; 1D radiation pattern; 2D radiation pattern; antenna radiating property; dispersive circuital antenna model; frequency-dependent formulation; mushroom-like PPW LWA; parallel-plate waveguide composite right/left-handed leaky-wave antennas; radiation characteristics; Antenna measurements; Antenna radiation patterns; Arrays; Frequency measurement; Integrated circuit modeling; Slot antennas; Composite right/left-handed transmission lines (CRLH TLs); leaky-wave antennas (LWAs); parallel-plate waveguides (PPWs);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2011.2158630
