DocumentCode
2827544
Title
An extremely low-profile helical array antenna
Author
Nakano, H. ; Takeda, H. ; Honma, T. ; Mimaki, H. ; Yamauchi, J.
Author_Institution
Coll. of Eng., Hosei Univ., Tokyo, Japan
fYear
1990
fDate
7-11 May 1990
Firstpage
702
Abstract
An extremely-low-profile helical array antenna has been designed for a frequency band of 11.7 GHz to 12.0 GHz. Calculations show how proper spacing of the helical elements serves to reduce the deterioration in the directivity of a helical array antenna when the radiation beam is tilted from the normal direction of the array plane. The measured aperture efficiency shows a maximum value of 80% for a beam radiated in the normal direction and 71% for a 30 degrees beam tilt.<>
Keywords
antenna radiation patterns; directive antennas; frequency response; microwave antenna arrays; SHF; aperture efficiency; directivity; extremely low-profile helical array antenna; frequency responses; helical elements; microwave antenna array; radiation patterns; spacing; Antenna arrays; Frequency; Helical antennas; Microstrip antenna arrays; Microstrip antennas; Phased arrays; Planar waveguides; Polarization; Satellite antennas; Satellite broadcasting;
fLanguage
English
Publisher
ieee
Conference_Titel
Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.
Conference_Location
Dallas, TX, USA
Type
conf
DOI
10.1109/APS.1990.115206
Filename
115206
Link To Document