Title :
A Coaxial Corrugated Dual-Band Horn Feed
Author :
Zhang, Qiang ; Yuan, Cheng-Wei ; Liu, Lie
Author_Institution :
Coll. of Optoelectron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha, China
fDate :
7/1/1905 12:00:00 AM
Abstract :
A compact corrugated dual-band horn feed with high power handling capacity is proposed in this letter. It is composed of an inner choke horn and an outer choke antenna, which consists of the concatenation of a corrugated circular waveguide together with a choke antenna and a spherical cover. Using mode matching theory to determine the scatter matrix of the feed, the analysis allows the return loss and transmission coefficient of each band to be computed accurately. The feeds´ return loss is less than -20 dB, and a good far-field radiation pattern at each band has been achieved. All results are simulated, demonstrating the feasibility of the feed. It is suitable for feeding of prime-focus reflectors in a dual-band high-power microwave (HPM) system in the future.
Keywords :
S-matrix theory; antenna feeds; coaxial waveguides; horn antennas; mode matching; HPM system; coaxial corrugated dual-band horn feed; corrugated circular waveguide; far-field radiation pattern; high power handling capacity; high-power microwave system; inner choke horn; mode matching theory; outer choke antenna; prime-focus reflectors; return loss; scatter matrix; transmission coefficient; Compact size; corrugated horn feed; dual-band; high-power microwave (HPM); horizontal and vertical corrugations;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2009.2038938
