Title :
Multilayer spatial angular filter with airgap tuners to suppress grating lobes of 4×1 array antenna
Author :
Lee, Young Ju ; Jeong, Sung Hun ; Park, Wee Sang ; Yun, Jae Seung ; Jeon, Soon Ick
Author_Institution :
Div. of Electr. & Comput. Eng., Pohang Univ. of Sci. & Technol., South Korea
Abstract :
A multilayer spatial angular filter with airgap tuners to suppress the grating lobes of a 4×1 array antenna is proposed. By using the airgap tuner, a commercial standard substrate can be chosen for the filter, to achieve its resonance condition, instead of λg/4 substrate. The measured beam patterns of the 4×1 array with the filter show that the grating and sidelobes are effectively diminished by 15 to 30 dB in the region of interest.
Keywords :
antenna accessories; antenna radiation patterns; microstrip antenna arrays; spatial filters; tuning; H-plane pattern; airgap tuners; array antenna; beam patterns; grating lobes suppression; multilayer spatial angular filter; patch antenna;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20030064
