참고문헌
- K. Tsai, H. S. Yang, J. H. Chen and Y. J. E. Chen, "A miniaturized branch-line coupler using finger-shape distributed capacitors," Proc. IEEE Asia-Pacific Microwave Conf., pp.1240-1243, Dec. 2010.
- K. Khoder, M. L. Roy and A. Pérennec, "An all-pass topology to design a 0-360º continuous phase shifter with low insertion loss and constant differential phase shift," Proc. IEEE European Microwave Conf., pp.1556-1559, Oct. 2014.
- H. Ren, J. Shao, M. Zhou, B. Arigong, J. Ding and H. Zhang, "Design of dual-band transmission line with flexible phase shifters and its applications," Electron. Lett., vol. 51, no. 3, pp. 261-262, Feb. 2015. https://doi.org/10.1049/el.2014.4140
- C. S. Liu, S. F. Chang, C. C. Chang and Y. H. Shu, "Design of a reflection-type phase shifter with wide relative phase shift and constant insertion loss," IEEE Trans. Microwave Theory Tech., vol. 55, no. 9, pp.1862-1868, Sept. 2007. https://doi.org/10.1109/TMTT.2007.903346
- K. S. Choi, K. C. Yoon, J. Y. Lee, C. K. Lee, S. C. Kim, K. B. Kim and J. C. Lee, "Compact branch-line coupler with harmonics suppression using meander T-shaped line," Microwave Opt. Technol. Lett, vol. 56, no. 6, pp.1382-1384, Jun .2014. https://doi.org/10.1002/mop.28331
- T. C. Chiang and C. Y. Chen, "Design of a wide-band lumped-element 3-dB quadrature coupler," IEEE Trans. Microwave Theory Tech., vol. 49, no. 3, pp.476-479, Mar. 2001. https://doi.org/10.1109/22.910551
- K. M. Shum, Q. Xue and C. H. Chan, "A novel microstrip ring hybrid incorporating a PBF cell," IEEE Microwave Wireless Component Lett., vol. 11, no. 6, pp.258-260, Jun. 2001. https://doi.org/10.1109/7260.928931
- Y. J. Sung, C. S. Ahn and Y. S. Kim, "Size reduction and harmonic suppression of rat-race coupler using defected ground structure," IEEE Microwave Wireless Component Lett., vol. 14, no. 1, pp.7-9, Jan. 2004. https://doi.org/10.1109/LMWC.2003.821499
- J. Gu and X. Sun, "Miniaturization and harmonic suppression rat-race coupler using C-SCMRC resonators with distributive equivalent circuit," IEEE Microwave Wireless Component Lett., vol. 15, no. 12, pp.880-882, Dec. 2005. https://doi.org/10.1109/LMWC.2005.859980
-
Varactor diodes application note, Skyworks Solutions, Inc
$Skyworks^{(R)}$ , 2008 (www. Skyworksinc.com). - K. C. Yoon, C. H. Kang and J. C. Lee, "Design of an ultra wide band band-pass filter with open-stubs," J. Korea Ins. Intelligent Transport System (ITS), vol. 12, no. 6, pp.37-43, Dec. 2013. https://doi.org/10.12815/kits.2013.12.6.037
-
C. S. Lin, S. F. Chang and W. C. Hsiao, "A full-360
$^{\circ}$ reflection-type phase shifter with constant insertion loss," IEEE Microwave and Wireless Component Lett., vol. 18, no. 2, pp.106-108, Feb. 2008. https://doi.org/10.1109/LMWC.2007.915094 - A. M. Abbosh, "Compact tunable reflection phase shifters using short section of coupled lines," IEEE Trans. Microwave Theory Tech., vol. 60, no. 8, pp. 2465-2472, Aug. 2012. https://doi.org/10.1109/TMTT.2012.2198232
-
Q. Liu, H. Liu and Y. Liu, "Compact ultra-wideband 90
$^{\circ}$ phase shifter using short-circuited stub and weak coupled line," Electron. Lett., vol. 50, no. 20, pp.1454-1456, Sept. 2014. https://doi.org/10.1049/el.2014.2271