Ring Circulator Theory, Design, and Performance
- 1 November 1967
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Microwave Theory and Techniques
- Vol. 15 (11) , 623-628
- https://doi.org/10.1109/tmtt.1967.1126551
Abstract
A compact, symmetrical, three-port S-band circulator composed of reciprocal T junctions and nonreciprocal phase shifters is investigated theoreticaly, and its experimental performance results are presented. The comparison of these results demonstrates that 1) circulators can he designed and their experimental performance described from a network model and 2) there is no theoretical limitation on the minimum amount of total differential phase shift necessary for perfect circulation. Bandwidth is investigated and techniques are discussed, including the introduction of a "backward wave" phase shifter, for achieving larger bandwidths. The stripline nonreciprocal comb-filter phase shifter used in the ring circulator is described and performance results are given.Keywords
This publication has 4 references indexed in Scilit:
- Broadband Strip-Transmission Line Y-Junction CirculatorsIEEE Transactions on Microwave Theory and Techniques, 1965
- Circulator SynthesisIEEE Transactions on Microwave Theory and Techniques, 1965
- The Three-Level Solid State Traveling-Wave Maser*Bell System Technical Journal, 1959
- On the Physical Realizability of Linear Non-Reciprocal NetworksProceedings of the IRE, 1955