An Interdigitated 3-dB Coupler with Three Strips

IEEE Transactions on Microwave Theory and Techniques

Volumn 26, Issue 9, 1978, Pages 643-645

  Tulaja, Volker ^a   Schiek, Burkhard ^b   Köhler, Jürgen ^b  

^a UNIVERSITY OF HAGEN   (Germany)

^b PHILIPS RESEARCH LABORATORIES   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

WAVEGUIDE COMPONENTS - COUPLERS;

INTERDIGITATED;

MICROSTRIP DEVICES;

EID: 0018019332     PISSN: 00189480     EISSN: 15579670     Source Type: Journal    
DOI: 10.1109/TMTT.1978.1129455     Document Type: Article

References (9)

1. J. Lange, “Interdigitated stripline quadrature hybrid,” in 1969 G-MTT Int. Microwave Symp. pp. 10–13.
2. W. P. Ou “Design equations for an interdigitated directional coupler,” IEEE Trans. Microwave Theory Tech., vol. MTT-23, pp. 253–255, Feb. 1975.
3. D. D. Paolino, “Design more accurate interdigitated couplers,” Microwaves, pp. 34–38, May 1976.
4. R. Waugh and D. La Combe “Unfolding the Lange Coupler,” IEEE Trans. Microwave Theory Tech., vol. MTT-20, pp. 777–779, Nov. 1972.
5. J. A. Malherbe “Interdigital directional coupler with an odd or even number of lines and unequal characteristic impedances,” Elec. Lett., vol. 12, pp. 454–465, Sept. 1976.
6. V. K. Tripathi “On the analysis of symmetrical three-line microstrip circuits,” IEEE Trans. Microwave Theory Tech., vol. 25, pp. 726–729, Sept. 1977.
7. B. L. Lennartsson “A Network analogue method for computing the TEM characteristics of planar transmission lines,” IEEE Trans. Microwave Theory Tech., vol. MTT-20, pp. 586–591, Sept. 1972.
8. —, “Capacitance matrix calculations for planar transmission lines imbedded in composite dielectric materials,” Technical Report No. 49 (1974), Chalmers University of Technology, Göteborg, Sweden.
9. U. Schulz, “Improvements and simplifications of network analogue capacitance matrix calculations, private communication (to be published).