Branch-line couplers using unequal line lengths

Date

2001-04-01

Author

Toker, Canan
Ozme, M
Gunalp, N

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General solutions for branch-line couplers using different Line lengths are provided in this paper. Explicit expressions are derived with which a hybrid with any given power division ratio can be designed. In the design, one of the characteristic impedances or lengths of the branches can be chosen arbitrarily to suit a given design specification, This approach brings flexibility in choosing the characteristic impedances or the lengths of the branches, and is helpful especially in monolithic-microwave integrated-circuit applications where restrictions imposed on microstrip transmission lines do not allow the use of conventional branch-line couplers employing quarter-wave-long lines, However, the resultant bandwidth is narrower compared to that of the conventional coupler.

Subject Keywords

Branch-line couplers, Hybrids

URI

https://hdl.handle.net/11511/31744

Journal

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES

DOI

https://doi.org/10.1109/22.915448

Collections

Graduate School of Natural and Applied Sciences, Article

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Citation Formats

C. Toker, M. Ozme, and N. Gunalp, “Branch-line couplers using unequal line lengths,” IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, pp. 718–721, 2001, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31744.