References
- Hsu, CIG, Lee, CH, and Jhuang, HK, 2007. Design of a novel quadband microstrip BPF using quarter-wavelength stepped-impedance resonators, Microwave J. 50 (2007), pp. 102–112.
- Wu, HW, and Yang, RY, 2011. A new quad-band bandpass filter using asymmetric stepped impedance resonators, IEEE Microwave Wirel. Compon. Lett. 21 (2011), pp. 203–205.
- Lin, SC, 2011. Microstrip dual/quad-band filters with coupled lines and quasi-lumped impedance inverters based on parallel-path transmission, IEEE Trans. Microwave Theory Tech. 59 (2011), pp. 1937–1946.
- Liu, JC, Wang, JW, Zeng, BH, and Chang, DC, 2010. CPW-fed dual-mode double-square-ring resonators for quad-band filters, IEEE Microwave Wirel. Compon. Lett. 20 (2010), pp. 142–144.
- Cheng, CM, and Yang, CF, 2010. Develop quad-band (1.57/2.45/3.5/5.2 GHz) bandpass filters on the ceramic substrate, IEEE Microwave Wirel. Compon. Lett. 20 (2010), pp. 268–270.
- Ren, LY, 2010. Quad-band bandpass filter based on dual-plane microstrip/DGS slot structure, Electron. Lett. 46 (2010), pp. 691–692.
- Wu, JY, and Tu, WH, 2011. Design of quad-band bandpass filter with multiple transmission zeros, Electron. Lett. 47 (2011), pp. 502–503.
- Xu, J, Miao, C, Cui, L, Ji, YX, and Wu, W, 2012. Compact high isolation quad-band bandpass filter using quad-mode resonator, Electron. Lett. 48 (2012), pp. 28–29.
- Gao, L, Zhang, XY, and Zhang, YB, 2012. Compact quad-band bandpass filter using open- and short-stub-loaded resonators, J. Electromagn. Waves Appl. 26 (2012), pp. 1070–1081.
- Pozar, DM, 2005. Microwave engineering. New York: Wiley; 2005.
- Hong, JS, and Lancaster, MJ, 2001. Microstrip filters for RF/microwave applications. New York: Wiley; 2001.