REFERENCES
- J M C Dukes, Broad band slot coupled microstrip directional couplers, Proc IEE B, vol 105, pp 147–154, Jan 1958.
- M Kumar, Coupling between two microstrip lines through apertures, Electron Lett, vol 14, pp 415–416, 6th Jul 1978.
- M R Schneider, Microstriplines for microwave integrated circuits, Bell Syst Tech J, vol 48, pp 1421–1445, May/Jun 1979.
- R E Collin, Field theory of guided waves, McGraw-Hill, 1960 Ch 7.
- H A Bethe, Theory of diffraction by small holes, Phys Rev vol 66, pp 163–182, Oct 1944.
- S B Cohn, Microwave coupling by large apertures, Proc IRE, vol 40, pp 696–699, Jun 1952.
- R E Collin, Foundation of Microwave Engineering, McGraw-Hill, Ch 4, 1966.