We propose a novel microstrip leaky-wave antenna, based on a multiple-ring ('bull-eye') structure, with a high radiation efficiency and reduced edge-diffraction effects. Such favorable properties are achieved by properly choosing the relevant physical and geometrical parameters in order to operate the antenna in a frequency range in which no surface wave may propagate and the only physical leaky wave is the fundamental TM0 mode. A directive conical radiation pattern, frequency-scannable in a wide angular region, is thereby achieved. Numerical results on dispersion properties of the involved TM and TE modes and full-wave simulations of representative structures are provided to demonstrate the feasibility of the proposed design.
Baccarelli, P. (2004). A novel printed leaky-wave ‘Bull-Eye’ antenna with suppressed surface-wave excitation. In Digest 2004 IEEE AP-S International Symposium on Antennas and Propagation (pp.1078-1081). NEW YORK : IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA [10.1109/APS.2004.1329861].
A novel printed leaky-wave ‘Bull-Eye’ antenna with suppressed surface-wave excitation
BACCARELLI, PAOLO
2004-01-01
Abstract
We propose a novel microstrip leaky-wave antenna, based on a multiple-ring ('bull-eye') structure, with a high radiation efficiency and reduced edge-diffraction effects. Such favorable properties are achieved by properly choosing the relevant physical and geometrical parameters in order to operate the antenna in a frequency range in which no surface wave may propagate and the only physical leaky wave is the fundamental TM0 mode. A directive conical radiation pattern, frequency-scannable in a wide angular region, is thereby achieved. Numerical results on dispersion properties of the involved TM and TE modes and full-wave simulations of representative structures are provided to demonstrate the feasibility of the proposed design.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
