Title :
Varactor-Tuned Lumped-Element Circulators (Correspondence)
Author :
Halszajn, J. ; Walker, David ; Aitken, F.M.
Abstract :
In the case of lumped-element circulators, the center frequency of the device can be tuned by altering the lumped capacitance only. It is the purpose of this paper to describe a new voltage-tuned circulator which is obtained by replacing the usual lumped capacitances by varactor diodes. Such a circulator has been tuned over an octave band from 250 to 500 MHz.
Keywords :
Capacitance; Circulators; Diodes; Ferrites; Filters; Frequency; Geometry; Magnetic resonance; Stripline; Varactors;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.1971.1127646
