Vol. 64
Latest Volume
All Volumes
2016-12-16
High Selectivity Wideband Bandpass Filter Based on Transversal Signal-Interaction Concepts Loaded with Open and Shorted Stubs
By
Progress In Electromagnetics Research Letters, Vol. 64, 133-139, 2016
Abstract
A new design of high selectivity wideband bandpass filter based on transversal signal-interaction concepts loaded with open and shorted stubs is proposed in this paper. Two transmission paths are used to realize signal transmission. Path 1 is composed of a T-shaped structure with shorted stub, and Path 2 consists of two open coupled lines loaded with open stubs. A wide five-order passband and high selectivity stopband with four transmission zeros can be achieved in the proposed filter. Finally, a wideband bandpass filter operating at 3 GHz with 3-dB fractional bandwidth of 83.3% (1.55 to 4.05 GHz) is designed, fabricated, and measured. Good agreement between the simulation and experiment is obtained.
Citation
Liwei Cui, Weimin Wang, Zheng Zhuang, Shulan Li, Yongle Wu, and Yuan'an Liu, "High Selectivity Wideband Bandpass Filter Based on Transversal Signal-Interaction Concepts Loaded with Open and Shorted Stubs," Progress In Electromagnetics Research Letters, Vol. 64, 133-139, 2016.
doi:10.2528/PIERL16101502
References

1. Feng, W. J. and W. Q. Che, "Novel ultra-wideband bandpass filter using shorted coupled lines and transversal transmission line," IEEE Microwave Wireless Compon. Lett., Vol. 20, 548-551, 2010.
doi:10.1109/LMWC.2010.2055840

2. Sanchez-Soriano, M. A., E. Bronchalo, and G. Torregrosa-Penalva, "Compact UWB bandpass filter based on signal interference techniques," IEEE Microw. Wireless Compon. Lett., Vol. 19, 692-694, 2009.
doi:10.1109/LMWC.2009.2032001

3. Feng, W. J., W. Q. Che, S. Y. Shi, and Q. Xue, "Compact dual-wideband bandstop filters based on open coupled lines and transversal signal-interaction concepts," IET Microwave Antennas Propagat., Vol. 7, 92-97, 2013.
doi:10.1049/iet-map.2012.0555

4. Gomez-Garcıa, R., M. Sanchez-Renedo, and B. Jarry, "A class of microwave transversal signal-interference dual-passband planar filters," Microwave Wireless Compon. Lett., Vol. 19, 158-160, 2009.
doi:10.1109/LMWC.2009.2013738

5. Xue, S. J., W. J. Feng, H. T. Zhu, and W. Q. Che, "Wideband bandpass filter with six transmission zeros using transversal signal-interaction concepts," Progress In Electromagnetics Research C, Vol. 34, 1-12, 2013.
doi:10.2528/PIERC12092814

6. Feng, W. J., W. Q. Che, Y. M. Chang, S. Y. Shi, and Q. Xue, "High selectivity fifth-order wideband bandpass filter with multiple transmission zeros based on transversal signal-interaction concepts," IEEE Trans. Microwave Theory Tech., Vol. 61, 89-97, 2013.
doi:10.1109/TMTT.2012.2227785

7. Feng, W. J. and W. Q. Che, "Novel wideband differential bandpass filter based on T-shaped structure," IEEE Trans. Microwave Theory Tech., Vol. 60, 1560-1568, 2012.
doi:10.1109/TMTT.2012.2188538

8. Nan, L. X., Y. L Wu, W. M. Wang, S. L. Li, and Y. A. Liu, "A compact wideband bandpass filter using a coupled-line quad-mode resonator," Progress In Electromagnetics Research Letters, Vol. 5, 7-12, 2015.
doi:10.2528/PIERL15020201

9. Feng, W. J., W. Q. Che, S. Y. Shi, and Q. Xue, "High selectivity wideband bandpass filter based on transversal signal-interaction concepts and T-shaped structure," IEEE Microw. Wireless Compon. Lett., Vol. 22, 562-564, 2012.
doi:10.1109/LMWC.2012.2224651

10. Wu, Y. L., S. Y. Zhou, W. W. Zhang, M. L. Liao, and Y. N. Liu, "Coupled-line dual-band bandpass filter with compact structure and wide stopband," Electron. Lett., Vol. 50, 187-189, 2014.
doi:10.1049/el.2013.3791

11. Bozzetti, M., A. D’orazio, M. De Sario, V. Petruzzelli, F. Prudenzano, and F. Rrnna, "Tapered photonic bandgap microstrip lowpass filters: Design and realization," IEEE Proceedings Microwaves, Antennas and Propagation, Vol. 150, 459-462, 2003.
doi:10.1049/ip-map:20030542

12. Ahn, D., J.-S. Park, C.-S. Kim, and J. Kim, "A design of the low-pass filter using the novel microstrip defected ground structure," IEEE Trans. Microwave Theory Techn., Vol. 49, 86-93, 2001.
doi:10.1109/22.899965

13. Matthaei, G., L. Young, and E. M. T. Jones, Microwave Filter, Impedance Matching Networks and Coupling Structures, Sec. 5, 222-224, Artech House, Norwood, MA, USA, 1985.

14. Tang, C. W., C. T. Tseng, and S. C. Chang, "A tunable bandpass filter with modified parallel-coupled A tunable bandpass filter with modified parallelcoupled," IEEE Microw. Wireless Compon. Lett., Vol. 23, 190-192, 2013.
doi:10.1109/LMWC.2013.2247585

15. Hong, J. S. and M. J. Lancaster, Microstrip Filters for RF/Microwave Applications, Wiley, New York, 2001.
doi:10.1002/0471221619

16. Jones, E. M. T. and J. T. Bolljahn, "Coupled-strip-transmission-line filters and directional couplers," IRE Trans. Microwave Theory Techn., Vol. 4, 75-81, 1956.
doi:10.1109/TMTT.1956.1125022