Title :
A new wideband cavity-backed spiral antenna
Author :
Afsar, M.N. ; Yong Wang ; Hanyi, D.
Author_Institution :
Dept of Electr. Eng. & Comput. Sci., Tufts Univ., Medford, MA, USA
Abstract :
A new stepped cavity-backed spiral antenna has been designed to improve the gain. The performance of this antenna was analyzed by the finite difference time domain (FDTD) method. The calculated results showed that this antenna has an obvious gain improvement over a cavity-backed spiral antenna with absorbing materials.
Keywords :
finite difference time-domain analysis; spiral antennas; FDTD; absorbing materials; antenna gain; antenna performance; cavity-backed Archimedean spiral antenna; finite difference time domain method; stepped cavity-backed spiral antenna; wideband cavity-backed spiral antenna; Bandwidth; Broadband antennas; Conducting materials; Finite difference methods; Frequency; Geometry; Microwave antennas; Reflector antennas; Spirals; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2001. IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7070-8
DOI :
10.1109/APS.2001.959415
