Design and Development of X-Band Ferrite Components
TL;DR: In this article, a four-port X-band junction waveguide circulator and a field displacement type isolator are described, which has a bandwidth of 1·5 kMc/s for less than 1 db insertion loss and greater than 20 db. isolation.
Abstract: This paper describes a four-port X-band junction waveguide circulator and an X-band field displacement isolator. The circulator employs a right angled H-type junction of two X-band waveguides. A full height cylindrical post of R-4 ferrite surrounded by a full height teflon cylinder is symmetrically placed at the junction. Hitherto, no 4-port waveguide circulator using this ferrite-dielectric condiguration has been reported in the literature. This circulator has a bandwidth of more than 500 mc/s. Maximum isolation approaches 40 db. and minimum insertion loss is negligible (less than 0·2 db.). Effects of dielectric loading on the circulator performance are also presented.This paper also describes an X-band field displacement type isolator which has a bandwidth of 1·5 kMc/s. for less than 1 db. insertion loss and greater than 20 db. isolation.
Citations
More filters
TL;DR: In this paper, the authors present a bibliography for the field of ferrite-junction circulators, which covers the period from January 1956 to September 1969, and includes references for typical designs and constructions as well as for experimental results and applications.
Abstract: To date an enormous amount of work has been done in the field off ferrite-junction circulators, but as yet no up-to-date bibliography is available. The present bibliography has been compiled to cover the period from January 1956 to September 1969 in order to help researchers working in this field. The bibliography provides references on ferrite circulators including entries for theory, stripline and waveguide versions, low and high powers, low-temperature circulators, lumped-element circulators, switching circulators, slot circulators, microstrip circulators, etc. It also includes references for typical designs and constructions as well as for experimental results and applications. As in the compilation of any bibliography, some valuable and pertinent article may have been overlooked.
3 citations
References
More filters
TL;DR: In this article, the simplified boundary value problem of the circular strip-line Y-circulator is stated and, following experimental results, the circulation parameters are calculated and discussed, and the frequency characteristics are evaluated and a general method for broadbanding the device is presented.
Abstract: The simplified boundary-value problem of the circular strip-line Y-circulator is stated and, following experimental results, is solved approximately. The circulation parameters are calculated and discussed. The frequency characteristics are evaluated and a general method for broadbanding the device is presented. From the calculated and measured field distribution, an explanatory description of the circulation mechanism is given. Finally, other possible solutions and the features for use at UHF are discussed.
382 citations
TL;DR: In this paper, the performance of ferrite field displacement isolators at various frequency bands is described, and single and double-slab isolators are constructed in rectangular waveguide.
Abstract: Performance of ferrite field displacement isolators at various frequency bands is described. Single and double-slab isolaton have been constructed in rectangular waveguide. Four single-slab isolators are reported in the following frequency bands: 3700-4200 mc; 5925-6425 mc; 10,700-11,700 mc and 23,500-24,470 mc; one double-slab isolator is described in the frequency range 10,700-11,700 mc.
11 citations