Broadside Radiation From a Planar 2-D Leaky-Wave Antenna by Practical Surface-Wave Launching

A planar 2-D leaky-wave (LW) antenna, capable of broadside radiation, is presented for millimeter wave applications. A directive surface-wave launcher (SWL) is utilized as the antenna feed exciting cylindrical surface-waves (SWs) on a grounded dielectric slab (GDS). With the addition of a segmented...

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Bibliographic Details
Published inIEEE antennas and wireless propagation letters Vol. 7; pp. 517 - 520
Main Authors Podilchak, S.K., Freundorfer, A.P., Antar, Y.M.M.
Format Journal Article
LanguageEnglish
Published New York IEEE 2008
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Antenna feeds
Antenna measurements
Aperture antennas
Dielectrics
Directive antennas
Gratings
Leaky wave antennas
Leaky-wave (LW)
leaky-wave antenna (LWA)
Millimeter wave measurements
Slabs
surface-wave (SW)
surface-wave launcher (SWL)
Tellurium
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Summary:A planar 2-D leaky-wave (LW) antenna, capable of broadside radiation, is presented for millimeter wave applications. A directive surface-wave launcher (SWL) is utilized as the antenna feed exciting cylindrical surface-waves (SWs) on a grounded dielectric slab (GDS). With the addition of a segmented circular strip grating, cylindrical LWs can be excited on the antenna aperture. Measurements illustrate maximum gain at broadside at 19.48 GHz in both the E and H planes with a 10deg half power beamwidth. Specifically, a directive pencil beam is observed just at the edge of the TE 1 SW mode cuttoff frequency of the slab (19.47 GHz), suggesting maximum radiation at the edge of a TE stopband.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2008.2006768