Title :
Analysis and design of integrated active circulator antennas
Author :
Kalialakis, Christos ; Cryan, Martin J. ; Hall, Peter S. ; Gardner, Peter
Author_Institution :
Sch. of Electron. & Electr. Eng., Birmingham Univ., UK
fDate :
6/1/2000 12:00:00 AM
Abstract :
A study on the analysis and design of active integrated antennas based on active quasi-circulators is reported in this paper. The antenna consists of a novel hybrid active circulator and a short-circuited quarter-wavelength microstrip antenna, which combine to form an active antenna with transmit and receive action at the same frequency. A full-wave model of the configuration using the extended finite-difference time-domain method is devised to analyze its operation, to study parasitic electromagnetic coupling effects, and to derive design guidelines. Experimental results for a hybrid model are also presented
Keywords :
active antennas; antenna radiation patterns; antenna theory; electromagnetic coupling; finite difference time-domain analysis; microstrip antennas; microwave circulators; active quasi-circulators; design guidelines; extended FDTD method; extended finite-difference time-domain method; full-wave model; hybrid active circulator; hybrid model; integrated active circulator antennas; parasitic EM coupling effect; parasitic electromagnetic coupling effects; quarter-wavelength microstrip antenna; receive action; short-circuited microstrip antenna; transmit action; Electromagnetic analysis; Electromagnetic coupling; Electromagnetic modeling; Finite difference methods; Frequency; Guidelines; Microstrip antennas; Receiving antennas; Time domain analysis; Transmitting antennas;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
