Title :
Quadrupole gyromagnetic ferrite circular variable polariser loaded with a dielectric ring
Author :
Che, W. ; Yung, E.K.N. ; Sha, K. ; Junding, W.
Author_Institution :
Dept. of Electr. Eng., Nanjing Univ. of Sci. & Technol., Nanjing, China
fDate :
6/23/1905 12:00:00 AM
Abstract :
The introduction of a thin dielectric ring helps to increase the differential phase shift of the quadrupole gyromagnetic ferrite variable polariser by about 20-30%. Furthermore, a double-step impedance transformer has been introduced to broaden the bandwidth from 4.06 to 14.5%. The peak power is 750 kW, average power is 500 W, and the switching time is about 25 μs
Keywords :
circular waveguides; dielectric-loaded waveguides; electromagnetic wave polarisation; ferrite phase shifters; ferrite-loaded waveguides; gyromagnetic effect; impedance convertors; impedance matching; waveguide components; 25 mus; 500 W; 750 kW; average power; circular waveguide; dielectric ring; differential phase shift; double-step impedance transformer; peak power; quadrupole gyromagnetic ferrite circular variable polariser; switching time;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings
DOI :
10.1049/ip-map:20010219
