In this letter, a microstrip dual-band band-pass crossover is proposed. By reducing the number of inner open stubs, miniaturization of a window-shaped crossover without reducing bandwidth can be achieved. An electromagnetic simulation and measurements are used to validate the compact (0.35λ × 0.35λ) crossover with a wide bandwidth.
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
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
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.
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
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
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.