Synthesis of Symmetrical Branch-Guide Directional Couplers
- 1 February 1968
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Microwave Theory and Techniques
- Vol. 16 (2) , 80-89
- https://doi.org/10.1109/tmtt.1968.1126612
Abstract
A synthesis procedure is described for the design of branch-guide directional couplers which gives results showing a significant improvement over previous approximate methods. The synthesis technique adopted gives exact Butterworth characteristics and almost exact Chebyshev equal-ripple characteristics, the deviations in the latter case being so small that in most practical cases they may be neglected. The design of branch-guide couplers for bandwidths of greater than one octave is demonstrated. The design information for a large number of cases of practical interest is presented in tabular form, and experimental results for several branch-guide couplers constructed in waveguide and in stripline are in good agreement with the theory. The technique could prove valuable in the design of microminiature stripline hybrids and couplers.Keywords
This publication has 4 references indexed in Scilit:
- Direct Synthesis of Band-Pass Transmission Line StructuresIEEE Transactions on Microwave Theory and Techniques, 1965
- The Application of a New Class of Equal-Ripple Functions to Some Familiar Transmission-Line ProblemsIEEE Transactions on Microwave Theory and Techniques, 1964
- Synchronous Branch Guide Directional Couplers for Low and High Power ApplicationsIRE Transactions on Microwave Theory and Techniques, 1962
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