標題: Two-dimensional scanning leaky-wav antenna by utilizing the phased array
作者: Wang, CJ
Guan, HL
Jou, CF
電信工程研究所
Institute of Communications Engineering
關鍵字: phase shifter;reflected wave;two-dimensional scanning capability
公開日期: 1-Aug-2002
摘要: An aperture-fed patch antenna array is connected to the open end of a short leaky-wave antenna (LWA) to demonstrate the two-dimensional beam-scanning capability in this paper. This design not only offers another radiation path of the reflected wave, but also creates another scanning radiation pattern on the back plane of the substrate. The reflected wave of the LWA is equally separated by a power divider, modulated by each varactor-tuned phase shifter, and injected into two radiating aperture-coupled antennas. The operated frequencies are tuned to control the LWA main position in the elevation plane; meanwhile, by tuning the phase difference between two phase shifters, the main beam of the aperture-coupled antenna array can be scanned in the backside E plane. Experimental result shows that the suppression of the reflected wave can be 7 dB at 10.0 GHz with a short LWA length of 6 cm (two wavelengths). The H-plane and backside E-plane scanning radiation patterns have great potential in many applications and provide more flexibility to traditional designs.
URI: http://dx.doi.org/10.1109/LMWC.2002.802033
http://hdl.handle.net/11536/28655
ISSN: 1531-1309
DOI: 10.1109/LMWC.2002.802033
期刊: IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
Volume: 12
Issue: 8
起始頁: 311
結束頁: 313
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