Analysis of interference-type measurer of directional coupler directivity

Authors

  • G. A. Lukyanchuk Sevastopol National Technical University, Ukraine

DOI:

https://doi.org/10.3103/S073527270508008X

Abstract

A new method is suggested for construction of a measurer of directivity factor in directional couplers. The method is based on analysis of interference of the forward and backward wave in the secondary channel made as a closed ring. An equation relating the coupler directivity to the standing-wave ratio in the secondary channel is derived. An example of determination of couper’s directivity is included. The advantages of the proposed method are outlined.

References

AL’TMAN, D.G. Microwave Devices [Russian translation]. Moscow: Mir, 1968.

KOZHEVNIKOV, B.V. A waveguide directional coupler, SU Patent No. 1672538, A1 H01 P5/18, Application 4737544/09. Bull. Izobr., n.31, 23 Aug 1991.

LASHCHENKO, I.V. Radioelectron. Commun. Syst., v.42, n.1, p.33, 1999.

FEL’DSHTEIN, A.L.; YAVITCH, V.P.; SMIRNOV, V.P. Handbook of Waveguide Elements [in Russian, ed. by A. L. Fel’dshtein]. Moscow: Sov. Radio, 1967.

SILAYEV, M.A.; BRYANTSEV, S.S. Application of Matrices and Graphs to Analysis of Microwave Devices [in Russian, ed. by M. A. Silayev]. Moscow: Sov. Radio, 1970.

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Published

2005-08-08

Issue

Vol. 48 No. 8 (2005)

Section

Research Articles