A compact dual-band coupler with arbitrary power dividing ratio using broadside-coupled microstrip

References

• Kuo, J-T, and Tsai, C-H, 2010. Generalized synthesis of rat race ring coupler and its application to circuit miniaturization, Prog. Electromagn. Res. 108 (2010), pp. 51–64.
   Web of Science ®Google Scholar
• 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. Electromagnet. Wave. 25 (2011), pp. 2244–2253.
   Web of Science ®Google Scholar
• Keshavarz, R, Movahhedi, M, Hakimi, A, and Abdipour, A, 2011. A novel broad bandwidth and compact backward coupler with high coupling-level, J. Electromagnet. Wave. 25 (2011), pp. 283–293.
   Web of Science ®Google Scholar
• Peláez-Pérez, AM, Almorox-González, P, Alonso, JI, and González-Martín, J, 2011. Ultra-broadband directional couplers using microstrip with dielectric overlay in millimeter-wave band, Prog. Electromagn. Res. 117 (2011), pp. 495–509.
   Web of Science ®Google Scholar
• Kazerooni, M, and Aghalari, M, 2011. Size reduction and harmonic suppression of rat-race hybrid coupler using defected microstrip structure, Prog. Electromagn. Res. Lett. 26 (2011), pp. 87–96.
   Google Scholar
• Cheng, K-KM, and Wong, F-L, 2004. A novel approach to the design and implementation of dual-band compact planar 90° branch-line coupler, IEEE Trans. Microw. Theory Tech. 52 (2004), pp. 2458–2463.
   Web of Science ®Google Scholar
• Hsu, C-L, Kuo, J-T, and Chang, C-W, 2009. Miniaturized dual-band hybrid coupler with arbitrary power division ratios, IEEE Trans. Microw. Theory Tech. 57 (2009), pp. 149–156.
   Web of Science ®Google Scholar
• Zheng, N, Zhou, L, and Yin, W-Y, 2011. A novel dual-band Π-shaped branch-line coupler with stepped-impedance stubs, Prog. Electromagn. Res. Lett. 25 (2011), pp. 11–20.
   Google Scholar
• Sun, ZY, Zhang, LJ, Yan, YP, and Yang, HW, 2011. Unequal dual-band rat-race coupler based on dual-frequency 180 degree phase shifter, J. Electromagnet. Wave. 25 (2011), pp. 1840–1850.
   Web of Science ®Google Scholar
• Li, B, and Wu, W, 2011. Compact dual-band branch-line coupler with 20:1 power dividing ratio, J. Electromagnet. Wave. 25 (2011), pp. 607–615.
   Web of Science ®Google Scholar
• Lin, XQ, Liu, RP, Yang, XM, Chen, JX, Ying, XX, Cheng, Q, and Cui, TJ, 2006. Arbitrary dual-band components using simplified structures of conventional CRLH TLs, IEEE Trans. Microw. Theory Tech. 54 (2006), pp. 2902–2909.
   Web of Science ®Google Scholar
• 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. Electromagnet. Wave. 22 (2008), pp. 1267–1272.
   Web of Science ®Google Scholar
• De Castro-Galan, D, Garcia-Munoz, LE, Segovia-Vargas, D, and Gonzalez-Posadas, V, 2009. Diversity monopulse antenna based on a dual-frequency and dual mode CRLH rat-race coupler, Prog. Electromagn. Res. B 14 (2009), pp. 87–106.
   Google Scholar
• Wu C-Y, Chiou Y-C, Kuo J-T. Dual-band rat-race coupler with arbitrary power divisions using microwave C-sections. In: Proceedings 2009 Asia-Pacific Microwave Conference; 2009 Dec. p. 2018–2111..
   Google Scholar
• Yeung, LK, 2011. A compact dual-band 90° coupler with coupled-line sections, IEEE Trans. Microw. Theory Tech. 59 (2011), pp. 2227–2232.
   Web of Science ®Google Scholar
• Ryan, CGM, and Eleftheriades, GV, 2012. Design of a printed dual-band coupled-line coupler with generalized negative-refractive index transmission lines, IET Microw. Antenn. Propag. 6 (2012), pp. 705–712.
   Web of Science ®Google Scholar
• Wang, X, Yin, W-Y, and Wu, K-L, 2012. A dual-band coupled-line coupler with an arbitrary coupling coefficient, IEEE Trans. Microw. Theory Tech. 60 (2012), pp. 945–951.
   Web of Science ®Google Scholar
• Pozar, DM, 2005. Microwave engineering. New York, NY: Wiley; 2005.
   Google Scholar
• Wong, M-F, Hanna, VF, Picon, O, and Baudrand, H, 1991. Analysis and design of slot-coupled directional couplers between double-sided substrate microstrip lines, IEEE Trans. Microw. Theory Tech. 39 (1991), pp. 2123–2129.
   Web of Science ®Google Scholar
• Abbosh, AM, and Bialkowski, ME, 2007. Design of compact directional coupler for UWB applications, IEEE Trans. Microw. Theory Tech. 55 (2007), pp. 189–194.
   Web of Science ®Google Scholar