1. Wang, Y., A. M. Abbosh, and B. Henin, "Wideband microwave crossover using double vertical microstrip-CPW interconnect," Progress In Electromagnetics Research C, Vol. 32, 109-122, 2012.
doi:10.2528/PIERC12071903 Google Scholar
2. Wight, J. S., W. J. Chudobiak, and V. Makios, "A microstrip and stripline crossover structure," IEEE Trans. Microw. Theory Tech., Vol. 24, No. 5, 270, May 1976.
doi:10.1109/TMTT.1976.1128838 Google Scholar
3. Yeung, S., W. C. Ip, and K. K. M. Cheng, "A novel dual-band crossover design with enhanced frequency band ratio and operating bandwidth," Proc. Asia-Pacific Microwave Conf., 892-895, Melbourne, Australia, Dec. 2011. Google Scholar
4. Lee, Z. W. and Y. H. Pang, "Compact planar dual-band crossover using two-section branch-line coupler," Electron. Lett., Vol. 48, No. 21, 1348-1349, Oct. 2012.
doi:10.1049/el.2012.2454 Google Scholar
5. Shao, J., H. Ren, B. Arigong, C. Li, and H. Zhang, "A fully symmetrical crossover and its dual-frequency application," IEEE Trans. Microw. Theory Tech., Vol. 60, No. 8, 2410-2416, Aug. 2012.
doi:10.1109/TMTT.2012.2198229 Google Scholar
6. Tang, C. W., "Design of a microstrip dual-band crossover with asymmetrical shaped transmission lines," IEEE Trans. Microw. Theory Tech., Vol. 25, No. 9, 588-590, Sep. 2015. Google Scholar