A printed leaky-wave antenna (LWA) based on a grating of concentric annular microstrip rings fed by a non-directive TM(0) surface-wave launcher (SWL) is presented for two-sided continuous beam scanning and broadside radiation. By appropriate selection of the grating periodicity TE field distributions can be suppressed over a large bandwidth ensuring efficient TM(0) leakage and radiation into the far field. Measured results demonstrate a pencil beam at broadside with a 3 dB beamwidth less than 6 degrees at 17.9 GHz. The presented LWA may be useful for radar and surveillance systems where continuous beam scanning through broadside is desired.
Planar antenna for continuous beam scanning and broadside radiation by selective surface wave suppression / S. K., Podilchak; Y. M. M., Antar; A., Freundorfer; Baccarelli, Paolo; Burghignoli, Paolo; Paulotto, Simone; Lovat, Giampiero. - In: ELECTRONICS LETTERS. - ISSN 0013-5194. - STAMPA. - 46:9(2010), pp. 613-614. [10.1049/el.2010.0074]
Planar antenna for continuous beam scanning and broadside radiation by selective surface wave suppression
BACCARELLI, Paolo;BURGHIGNOLI, Paolo;PAULOTTO, Simone;LOVAT, GIAMPIERO
2010
Abstract
A printed leaky-wave antenna (LWA) based on a grating of concentric annular microstrip rings fed by a non-directive TM(0) surface-wave launcher (SWL) is presented for two-sided continuous beam scanning and broadside radiation. By appropriate selection of the grating periodicity TE field distributions can be suppressed over a large bandwidth ensuring efficient TM(0) leakage and radiation into the far field. Measured results demonstrate a pencil beam at broadside with a 3 dB beamwidth less than 6 degrees at 17.9 GHz. The presented LWA may be useful for radar and surveillance systems where continuous beam scanning through broadside is desired.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
