Title :
Transient radiation properties of an integrated equiangular spiral antenna
Author :
Pastol, Y. ; Arjavalingam, G. ; Halbout, J.-M.
Author_Institution :
IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA
Abstract :
Self-complementary two-arm equiangular spiral antennas were fabricated on silicon-on-sapphire substrates. Picosecond photoconductive pulse generation and sampling were used to investigate their transient radiation properties. Results are presented on transient response, bandwidth, polarization, and radiation pattern. The equiangular spiral antenna is found to be highly efficient, and its transient response exhibits a frequency sweep which is a direct consequence of the antenna structure. In this mode of excitation, the antenna remains circularly polarized, and the pattern for radiation through the substrate is quite broad.<>
Keywords :
antenna radiation patterns; electromagnetic wave polarisation; microwave antennas; transient response; SOS substrates; antenna structure; bandwidth; frequency sweep; integrated equiangular spiral antenna; microwave antenna; picosecond photoconductive pulse generation; polarization; radiation pattern; self-complementary two-arm equiangular spiral antenna; transient radiation properties; transient response; Bandwidth; Photoconductivity; Pulse generation; Receiving antennas; Sampling methods; Spirals; Switches; Transmitters; Transmitting antennas; USA Councils;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.
Conference_Location :
Dallas, TX, USA
DOI :
10.1109/APS.1990.115514
