Title :
Long slot arrays - part 2: ultra wideband test results
Author :
Lee, John Jaehwan ; Livingston, S. ; Koenig, R. ; Nagata, Daisei ; Lai, L.
Author_Institution :
Raytheon Space & Airborne Syst., El Segundo, CA, USA
Abstract :
A wideband long slot array was recently developed for radar and EW applications. Theoretically the new design has unlimited bandwidth if no ground plane is included but at the expense of 3 dB loss in gain because of bi-directional radiation. In practice, however, a ground plane is used which limits the bandwidth to about 5:1. Ground plane effects and the test results of a UHF array with 4×8 feed elements over a finite (1.12 m × 2.24 m) aperture are presented.
Keywords :
UHF antennas; antenna earths; antenna feeds; antenna radiation patterns; antenna testing; aperture antennas; directive antennas; radar antennas; slot antenna arrays; ultra wideband antennas; EW applications; UHF array; bi-directional radiation; feed elements; finite aperture; ground plane effects; radar applications; test results; wideband long slot array; Apertures; Bandwidth; Feeds; Frequency; Gain; Geometry; Impedance; Microwave antenna arrays; Testing; Ultra wideband technology;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1551387
