Planar antenna for continuous beam scanning and broadside radiation by selective surface wave suppression

Symon Podilchak, Y. M. M. Antar, A. Freundorfer, P. Baccarelli, P. Burghignoli, S. Paulotto, G. Lovat

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15 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)613-U27
Number of pages2
JournalElectronics Letters
Issue number9
Publication statusPublished - 29 Apr 2010

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