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

Author

Podilchak, Symon K. ; Freundorfer, Al P. ; Antar, Yahia M M

Author_Institution

Depts. of Electr. & Comput. Eng., R. Mil. Coll. of Canada & Queen´´s Univ., Kingston, ON

Volume

7

fYear

2008

fDate

6/30/1905 12:00:00 AM

Firstpage

517

Lastpage

520

Abstract

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 TE₁ SW mode cuttoff frequency of the slab (19.47 GHz), suggesting maximum radiation at the edge of a TE stopband.

Keywords

antenna feeds; antenna radiation patterns; aperture antennas; leaky wave antennas; microwave antennas; millimetre wave antennas; planar antennas; antenna aperture; antenna feed; broadside radiation; cylindrical surface-waves; directive pencil beam; directive surface-wave launcher; frequency 19.47 GHz; grounded dielectric slab; millimeter wave applications; planar 2D leaky-wave antenna; segmented circular strip grating; Leaky-wave (LW); leaky-wave antenna (LWA); surface-wave (SW); surface-wave launcher (SWL);

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

Conference_Location

10/10/2008 12:00:00 AM

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2008.2006768

Filename

4648404