DocumentCode :
3109733
Title :
Bandwidth enhancement technique for a square waveguide phased array element
Author :
Purdy, D.S. ; Stutzman, W.L. ; Swinford, H.W.
Author_Institution :
Lockheed Martin Corp., Newtown, PA, USA
Volume :
1
fYear :
1999
fDate :
11-16 July 1999
Firstpage :
138
Abstract :
This paper presents work on extending the bandwidth of a square waveguide by exploiting the symmetry properties of the modes. The approach is to place dielectric loading inside the square waveguide to separate the cutoff frequencies of the TE/sub 10/ and TE/sub 20/ modes. The TE/sub 11/ and TM/sub 11/ modes are suppressed using mode filters. This novel approach referred to as the crossed septum dielectric loaded waveguide (CSW) extends the usable bandwidth of a square waveguide from 1.414:1 to 2.2:1. The resulting structure is a candidate radiating element for a high power, dual polarized phased array that offers graceful degradation over this extended frequency range.
Keywords :
antenna phased arrays; dielectric-loaded antennas; dielectric-loaded waveguides; waveguide antenna arrays; TE/sub 10/ mode; TE/sub 11/ mode; TE/sub 20/ mode; TM/sub 11/ mode; bandwidth enhancement; crossed septum dielectric loaded waveguide; dielectric loading; high power dual polarized phased array; mode filters; square waveguide phased array element; symmetry properties; usable bandwidth; Bandwidth; Cutoff frequency; Degradation; Dielectrics; Filters; Lakes; Loaded waveguides; Phased arrays; Polarization; Tellurium;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas and Propagation Society International Symposium, 1999. IEEE
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-5639-x
Type :
conf
DOI :
10.1109/APS.1999.789101
Filename :
789101
Link To Document :
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