References
- Ramesh, M, Packiaraj, D, and Kalghatgi, AT, 2008. A compact branch line coupler using defected ground structure, J. Electromagn. Waves Appl. 22 (2008), pp. 267–276.
- Lu, K, Wang, G-M, Zhang, C-X, and Wang, Y-W, 2011. Design of miniaturized branch-line coupler based on novel spiral-based resonators, J. Electromagn. Waves Appl. 25 (2011), pp. 2244–2253.
- Zhang, J, Xue, W, and Sun, X-W, 2008. Miniaturization and harmonic suppression branch-line coupler using short-circuit anti-coupled line, Int. J. Electron. 95 (2008), pp. 853–858.
- Hazeri, AR, and Faraji, T, 2011. Miniaturisation and harmonic suppression of the branch-line hybrid coupler, Int. J. Electron. 98 (2011), pp. 1699–1710.
- Li, B, and Wu, W, 2011. Compact dual-band branch-line coupler with 20: 1 power dividing ratio, J. Electromagn. Waves Appl. 25 (2011), pp. 607–615.
- Wong F-L, Cheng K-KM. A novel planar branch-line coupler design for dual-band applications. IEEE MTT-S Int. Microw. Symp. Dig. Jun 6; Fort Worth (USA); 2004. p. 903–906..
- Taravati, S, and Khalaj-Amirhosseini, M, 2012. Compact dual-band stubless branch-line coupler, J. Electromagn. Waves Appl. 26 (2012), pp. 1323–1331.
- Lin, XQ, Liu, RP, Yang, XM, Chen, JX, Yin, XX, Cheng, Q, and Cui, TJ, 2006. Arbitrarily dual-band components using simplified structures of conventional CRLH TLs, IEEE Trans. Microwave Theory Techn. 54 (2006), pp. 2902–2909.
- He, J, Wang, B-Z, and Zhang, K-H, 2008. Arbitrary dual-band coupler using accurate model of composite right/left handed transmission line, J. Electromagn. Waves Appl. 22 (2008), pp. 1267–1272.
- Zhang, H, and Chen, KJ, 2007. A stub tapped branch-line coupler for dual-band operations, IEEE Microw. Wireless Compon. Lett. 17 (2007), pp. 106–108.
- Park, M-J, 2009. Dual-band, unequal length branch-line coupler with center tapped stubs, IEEE Microw. Wireless Compon. Lett. 19 (2009), pp. 617–619.
- Park, M-J, and Lee, B, 2005. Dual-band, cross coupled branch line coupler, IEEE Microw. Wireless Compon. Lett. 15 (2005), pp. 655–657.
- Collado, C, Grau, A, and De Flaviis, F, 2006. Dual-band planar quadrature hybrid with enhanced bandwidth response, IEEE Trans. Microwave Theory Techn. 54 (2006), pp. 180–188.
- Kim, H, Lee, B, and Park, M-J, 2010. Dual-band branch-line coupler with port extensions, IEEE Trans. Microwave Theory Techn. 58 (2010), pp. 651–655.
- Hsu, C-L, Kuo, J-T, and Chang, C-W, 2009. Miniaturized dual-band hybrid couplers with arbitrary power division ratios, IEEE Trans. Microwave Theory Techn. 57 (2009), pp. 149–156.
- Collin, RE, 1992. Foundations for microwave engineering. New York: IEEE Press; 1992.
- Taravati, S, 2012. Realization of compact broadband rat-race coupler, J. Electromagn. Waves Appl. 26 (2012), pp. 1708–1715.
- Tan, F, Huang, W, Chen, Y, Li, Y, Huang, K, and Liu, C, 2013. Design and implementation of compact microwave components with artificial transmission lines, J. Electromagn. Waves Appl. 27 (2013), pp. 385–395.
- Lim, D, and Kahng, S, 2012. Compact UHF 3rd-order bandpass filter with sharp skirt by cascaded triplet CRLH-ZORs, J. Electromagn. Waves Appl. 26 (2012), pp. 695–706.
- Piatnitsa, V, Kholodnyak, D, Fischuk, I, Komulainen, M, Jantunen, H, and Vendik, I, 2011. Miniature 90° and 180° directional couplers for bluetooth and WLAN applications designed as multilayer microwave integrated circuits, J. Electromagn. Waves Appl. 25 (2011), pp. 169–175.
- Ansoft Corporation, Pittsburgh, PA. High frequency structure simulator v10.0, 2005..