volume | PIER Journals

Abstract

A compact balanced UWB bandpass filter (BPF) is proposed in this paper, which is based on the half-mode substrate integrated waveguide (HMSIW) and the differential defected ground structure (D-DGS). Using the HMSIW, the filter can achieve compact size, wide passband and good compatibility. Two D-DGS cells are employed to provide good suppression for the common-mode (CM) noise, while they have small effect on the performance of differential-mode (DM) signals. To validate the design theory, a microstrip balanced UWB BPF is designed, fabricated and measured to meet compact size, low insertion loss, good return loss as well as proper bandwidth. The predicted results are compared with measured data and show reasonable agreement.

1. Viallon, C., G. Meneghin, and T. Parra, "NMOS device optimization for the design of a W-band double-balanced resistive mixer," IEEE Microwave and Wireless Components Letters, Vol. 24, 637-639, 2014.
doi:10.1109/LMWC.2014.2332100 Google Scholar

2. Wei, H.-C., C.-L. Hsiao, and R.-M. Weng, "A broadband low power high isolation double-balanced subharmonic mixer for 4G applications," Progress In Electromagnetics Research, Vol. 138, 143-155, 2013.
doi:10.2528/PIER13012509 Google Scholar

3. Tang, X. and K. Mouthaan, "Design of large bandwidth phase shifters using common mode all-pass networks," IEEE Microwave and Wireless Components Letters, Vol. 22, 55-57, 2012.
doi:10.1109/LMWC.2011.2182185 Google Scholar

4. Guo, J., Z. Xu, C. Qian, and W. Dou, "Design of a microstrip balanced mixer for satellite communication," Progress In Electromagnetics Research, Vol. 115, 289-301, 2011. Google Scholar

5. Chiu, L., Q. Xue, and C. H. Chan, "Dual-fed patch antenna with distorted patch mode for balanced circuits," IET Microwaves, Antennas & Propagation, Vol. 4, 809-816, 2010.
doi:10.1049/iet-map.2008.0275 Google Scholar

6. Niu, J. X. and X. L. Zhou, "Analysis of balanced composite right/left handed structure based on different dimensions of complementary split ring resonators," Progress In Electromagnetics Research, Vol. 74, 341-351, 2007.
doi:10.2528/PIER07051802 Google Scholar

7. Liao, C. F., Y. J. Chan, and Y. C. Chiang, "2.4GHz monolithic microwave mixer with lumped balanced circuits," Microwave and Optical Technology Letters, Vol. 17, 357-359, 1998.
doi:10.1002/(SICI)1098-2760(19980420)17:6<357::AID-MOP6>3.0.CO;2-G Google Scholar

8. Gunton, D. J., "Microwave balanced-mixer circuits using combline directional couplers," Electronics Letters, Vol. 12, 204-205, 1976.
doi:10.1049/el:19760157 Google Scholar

9. Li, L., J. Bao, J.-J. Du, and Y.-M. Wang, "Differential wideband bandpass filters with enhanced common-mode suppression using internal coupling technique," IEEE Microwave and Wireless Components Letters, Vol. 24, 300-302, 2014.
doi:10.1109/LMWC.2014.2306896 Google Scholar

10. Wu, X.-H., Q.-X. Chu, and L.-L. Qiu, "Differential wideband bandpass filter with high-selectivity and common-mode suppression," IEEE Microwave and Wireless Components Letters, Vol. 23, 644-646, 2013.
doi:10.1109/LMWC.2013.2284787 Google Scholar

11. Wang, X.-H., Q. Xue, and W.-W. Choi, "A novel ultra-wideband differential filter based on double-sided parallel-strip line," IEEE Microwave and Wireless Components Letters, Vol. 20, 471-473, 2010.
doi:10.1109/LMWC.2010.2050869 Google Scholar

12. Zhu, H. T., W. J. Feng, W. Q. Che, and Q. Xue, "Ultra-wideband differential bandpass filter based on transversal signal-interference concept," Electronics Letters, Vol. 47, 1033-1035, 2011.
doi:10.1049/el.2011.2088 Google Scholar

13. Wang, X.-H., H. Zhang, and B.-Z. Wang, "A novel ultra-wideband differential filter based on microstrip line structures," IEEE Microwave and Wireless Components Letters, Vol. 23, 128-130, 2013.
doi:10.1109/LMWC.2013.2243719 Google Scholar

14. Wu, S. M., C. T. Kuo, and C. H. Chen, "Very compact full differential bandpass filter with transformer integrated using integrated passive device technology," Progress In Electromagnetics Research, Vol. 113, 251-267, 2011. Google Scholar

15. Wu, C.-H., C.-H. Wang, and C. H. Chen, "Novel balanced coupled-line bandpass filters with common-mode noise suppression," IEEE Transactions on Microwave Theory and Techniques, Vol. 55, 287-295, 2007.
doi:10.1109/TMTT.2006.889147 Google Scholar

16. Wu, S.-M., R.-F. Hsu, and P. H. Yu, "Signal integrity and electromagnetic broadband packaging model extraction of full differential bandpass filter on IPD with BGA packaging," Progress In Electromagnetics Research, Vol. 141, 201-217, 2013.
doi:10.2528/PIER13040214 Google Scholar

17. Lai, Q., C. Fumeaux, W. Hong, and R. Vahldieck, "Characterization of the propagation properties of the half-mode substrate integrated waveguide," IEEE Transactions on Microwave Theory and Techniques, Vol. 57, 1996-2004, 2009.
doi:10.1109/TMTT.2009.2025429 Google Scholar

18. Matsumoto, K., Y. Toyota, K. Iokibe, and R. Koga, "Development of equivalent circuit model with transmission line model for designing filters formed on printed circuit boards," 2010 IEEE International Symposium on Electromagnetic Compatibility (EMC), 289-294, 2010.
doi:10.1109/ISEMC.2010.5711287 Google Scholar

Dr. Jiao Li

Dr. Chen Ding

Prof. Feng Wei

Professor Xiao-Wei Shi