Title :
Design of a photoconductive antenna with an angled DC bias connection on an extended hemispherical lens substrate
Author :
Truong Khang Nguyen ; Ikmo Park
Author_Institution :
Dept. of Electr. & Comput. Eng., Ajou Univ., Suwon, South Korea
Abstract :
The input impedance and radiation characteristics of photoconductive antennas with different DC bias connection angles printed on an extended hemispherical lens made of high-dielectric-constant substrate was presented. Antennas with different bias connection angles exhibited different gain and radiation efficiency spectra for a specific lens geometry. The antennas with larger DC bias connection angles provided stable input impedance and improved antenna gain levels, particularly in the low-frequency region. This indicates that the DC bias connection angle has specific effects on the overall performance of the photoconductive antenna design.
Keywords :
coplanar waveguides; dipole antennas; geometry; strip lines; submillimetre wave antennas; THz coplanar stripline dipole antennas; angled DC bias connection; extended hemispherical lens substrate; high-dielectric-constant substrate; improved antenna gain levels; input impedance; lens geometry; photoconductive antenna design; radiation characteristics; radiation efficiency; Dipole antennas; Impedance; Lenses; Microwave antennas; Stripline; Substrates; Terahertz antenna; coplanar stripline dipole antenna; extended hemispherical lens; high-dielectric-constant substrate; traveling wave;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2013 Asia-Pacific
Conference_Location :
Seoul
DOI :
10.1109/APMC.2013.6695069
