References
- R. Brown, and G. M. Rebeiz, “A varactor-tuned RF filter,” IEEE Trans. Microw. Theory Tech., Vol. 48, pp. 1157–1160, 2000. doi: 10.1109/22.848501
- B.-W. Kim, and S.-W. Yun, “Varactor-tuned combine bandpass filter using step-impedance microstrip lines,” IEEE Trans. Microw. Theory Tech., Vol. 52, pp. 1279–1283, 2004. doi: 10.1109/TMTT.2004.825626
- M. A. El-Tanani, and G. M. Rebeiz, “Corrugated microstrip coupled lines for constant absolute bandwidth tunable filters,” IEEE Trans. Microw. Theory Tech., Vol. 58, pp. 956–963, 2010. doi: 10.1109/TMTT.2010.2042517
- Y.-H. Chun, and J.-S. Hong, “Electronically reconfigurable dual-modemicrostrip open-loop resonator filter,” IEEE Microw. Wirel. Compon. Lett., Vol. 18, pp. 449–451, 2008. doi: 10.1109/LMWC.2008.924922
- J. Lee, and K. Sarabandi, “An analytic design method for microstrip tunable filters,” IEEE Trans. Microw. Theory Tech., Vol. 56, pp. 1699–1706, 2008. doi: 10.1109/TMTT.2008.925569
- H. Zhang, and K. J. Chen, “Bandpass filters with reconfigurable transmission zeros using varactor-tuned tapped stubs,” IEEE Microw. Wirel. Compon. Lett., Vol. 16, pp. 249–251, 2006. doi: 10.1109/LMWC.2006.873586
- J. Long, C. Li, W. Cui, J. Huangfu, and L. Ran, “A tunable microstrip bandpass filter with two independently adjustable transmission zeros,” IEEE Microw. Wirel. Compon. Lett., Vol. 21, pp. 74–76, 2011. doi: 10.1109/LMWC.2010.2097243
- X. Huang, Q. Feng, and Q. Xiang, “Bandpass filter with tunable bandwidth using quadruple-mode stub-loaded resonator,” IEEE Microw. Wirel. Compon. Lett., Vol. 22, pp. 176–178, 2012. doi: 10.1109/LMWC.2012.2188280
- A. Miller, and J.-S. Hong, “Reconfigurable cascaded coupled line filter with four distinct bandwidth states,” IET Microw. Antenna Propag., Vol. 5, pp. 1730–1737, 2011. doi: 10.1049/iet-map.2011.0109
- X. Y. Zhang, and Q. Xue, “High-selectivity tunable bandpass filters with harmonic suppression,” IEEE Trans. Microw. Theory Tech., Vol. 58, pp. 964–969, 2010. doi: 10.1109/TMTT.2010.2042844
- H. Zhu, and A. Abbosh, “Compact tunable bandpass filter with wide tuning range using ring resonator and short-ended coupled lines,” Electron. Lett., Vol. 51, pp. 568–570, 2015. doi: 10.1049/el.2015.0346
- N. Kumar, and Y. K. Singh, “Compact constant bandwidth tunable wideband BPF with second harmonic suppression,” IEEE Microwave Compon. Lett., Vol. 26, pp. 870–872, 2016. doi: 10.1109/LMWC.2016.2615001
- H. Zhu, and A. M. Abbosh, “Tunable balanced bandpass filter with wide tuning range of center frequency and bandwidth using compact coupled-line resonator,” IEEE Microwave Compon. Lett., Vol. 26, pp. 7–9, 2016. doi: 10.1109/LMWC.2015.2505647
- B. Pal, and S. Dwari, “Microstrip dual-band bandpass filter with independently tunable passbands using varactor-tuned stub loaded resonators,” AEU – Int. J. Electron. Comm., Vol. 73, pp. 105–109, 2017. doi: 10.1016/j.aeue.2017.01.004