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2011-12-12
Novel Capacitive Gap-Coupled Bandpass Filter Using Non-Uniform Arbitrary Image Impedance
By
Progress In Electromagnetics Research C, Vol. 26, 111-121, 2012
Abstract
This paper introduces a new design technique for a capacitive gap-coupled bandpass filter (BPF) using non-uniform arbitrary image impedances. Based on the proposed BPF equivalent circuit model, the filter's design equations are derived, and they are validated from comparisons of the calculated and simulated results. For this theoretical verification, the BPF using non-uniform arbitrary image impedances is designed using the specifications of: center frequency (fc)=5.8 GHz, fractional bandwidth (FBW)=3.5%, and filter stage (N)=3. The calculated and simulated results of the designed filter show good agreement. The BPF using the proposed design method could provide an advantage that one can arbitrarily determine two different image impedances, which ultimately affects the BPF's coupling gaps and line widths. This could result in suitable filter dimensions, i.e., gaps and line width, for a conventional low resolution photolithography fabrication although a low or high dielectric constant substrate is used for the design.
Citation
Dong-Jin Jung, and Kai Chang, "Novel Capacitive Gap-Coupled Bandpass Filter Using Non-Uniform Arbitrary Image Impedance," Progress In Electromagnetics Research C, Vol. 26, 111-121, 2012.
doi:10.2528/PIERC11102409
References

1. Matthaei, G. L., L. Young, and E. M. T. Johns, Microwave Filters, Impedance Matching Networks, and Coupling Structures, Arthech House, Dedham, 1980.

2. Cohn, S. B., "Direct coupled resonator filters," Proc. IRE, Vol. 45, No. 2, 187-196, Feb. 1957.

3. Cohn, S. B., "Parallel-coupled transmission-line-resonator filters," IRE Trans. Microw. Theory Tech., Vol. 6, No. 2, 223-231, Apr. 1958.

4. Ahn, D., C.-S. Kim, M.-H. Chung, D.-H. Lee, D.-W. Lew, and H.- J. Hong, "The design of parallel coupled line filter with arbitrary image impedance," IEEE MTT-S Int. Microwave Symp. Dig., Vol. 2, 909-912, Jun. 1998.

5. Gan, H., D. Lou, and D. Yang, "Compact microstrip bandpass filter with sharp transition bands," IEEE Microw. Wireless Compon. Lett., Vol. 16, No. 3, 107-109, Mar. 2006.

6. Ahn, D., J. S. Park, C. S. Kim, J. Kim, Y. Qian, and T. Itoh, "A design of the low-pass filter using the novel microstrip defected ground structure," IEEE Trans. Microw. Theory Tech., Vol. 49, No. 1, 86-93, Jan. 2001.

7. Jung, D.-J. and K. Chang, "Low-pass filter design through the accurate analysis of electromagnetic-bandgap geometry on the ground plane," IEEE Trans. Microw. Theory Tech., Vol. 57, No. 7, 1798-1805, Jul. 2009.

8. Kuo, T.-N., S.-C. Lin, and C. H. Chen, "Compact ultra-wideband bandpass filters using composite microstrip-coplanar waveguide structure," IEEE Trans. Microw. Theory Tech., Vol. 54, No. 10, 3772-3778, Oct. 2006.

9. Jung, D.-J. and K. Chang, "Accurate modeling of microstrip dumbbell shaped slot resonator (DSSR) for miniaturized tunable resonator and band-pass filter," Progress In Electromagnetics Research C, Vol. 23, 137-150, 2011.

10. Makimoto, M. and S. Yamashita, "Bandpass filters using parallel coupled stripline stepped impedance resonators," IEEE Trans. Microw. Theory Tech., Vol. 28, No. 12, 1413-1417, Dec. 1980.

11. Bonache, J., I. Gil, J. Garcia-Garcia, and F. Martin, "Novel microstrip band pass filters based on complementary split rings resonators," IEEE Trans. Microw. Theory Tech., Vol. 54, 265-271, Jan. 2006.

12. Jung, D.-J., J.-K. Lee, and K. Chang, "Wideband banpass filter using microstrip ring," Microw. Opt. Technol. Lett., Vol. 53, No. 1, 154-155, Jan. 2011.

13. Lim, J.-S., Y.-T. Lee, C.-S. Kim, D. Ahn, and S. Nam, "A vertically periodic defected ground structure and its application in reducing the size of microwave circuits," IEEE Microw. Wireless Compon. Lett., Vol. 12, No. 12, 240-242, Dec. 2002.

14. Jung, D.-J. and K. Chang, "Microstrip diplexer design for X-band RF/microwave front-end applications," IEEE Int. Symp. on Antennas and Propag., 5-7, Aug. 2011.

15. Ting, S.-W., K.-W. Tam, and R. P. Martins, "Miniaturized microstrip lowpass filter with wide stopband using double equilateral U-shaped defected ground structure," IEEE Microw. Wireless Compon. Lett., Vol. 16, No. 5, 240-242, May 2006.

16. Wang, X.-H., B.-Z. Wang, and K. J. Chen, "Compact broadband dual-band bandpass filters using slotted ground structure," Progress In Electronmagnetics Research, Vol. 82, 151-166, 2008.