References
- Mumford WW. Directional couplers. Proc IRE. 1947;35:160–165.
- Riblet HJ. A mathematical theory of directional couplers. Proc IRE. 1947;35:1307–1313.
- Pozar MD. Microwave engineering. Hoboken (NJ): Wiley; 2005.
- McCurdy AH, Choi JJ. Design and analysis of a coaxial coupler for a 35-GHz Gyroklystron amplifier. IEEE Trans Microw Theory Tech. 1999;47:164–175.
- Teppati V, Goano M, Ferrero A, et al. Broad-band coaxial directional couplers for high-power applications. IEEE Trans Microw Theory Tech. 2003;51:994–997.
- Teppati V, Andrea F. A new class of nonuniform, broadband, nonsymmetrical rectangular coaxial-to-microstrip directional couplers for high power applications. IEEE Microw Wireless Compon Lett. 2003;13:152.
- Shams SI, Elsaadany M, Saad G, et al. Compact wideband dual loop coupler with high power handling capability for radar applications. IEEE Microw Wireless Compon Lett. 2017;27:900–902.
- Islam R, Eleftheriades GV. Printed high-directivity metamaterial MS/NRI coupled-line coupler for signal monitoring applications. IEEE Microw Wireless Compon Lett. 2006;16:164–166.
- Chang SF, Chen JL, Jeng YH. New high-directivity coupler design with coupled spurlines, IEEE Microw Wireless Compon Lett. 2004;14:65–67.
- Yamamoto K, Kurusu H, Suzuki S. High-directivity enhancement with passive and active bypass circuit techniques for GaAs MMIC microstrip directional couplers. IEEE Trans Microw Theory Tech. 2011;59:3095–3107.
- Sohn SM, Gopinath A, Vaughan JT. A compact, high power capable, and tunable high directivity microstrip coupler. IEEE Trans Microw Theory Tech. 2016;64:3217–3223.
- Horn J, Boeck G. Design and modeling of transmission line transformers. in Proc Microw Optoelectron Conf. 2003;1:421.
- Bahl IJ. Lumped elements for RF and microwave circuits. Boston: Artech House; 2003.