Independently controllable dual-band bandpass filters using asymmetric stepped-impedance resonators

IEEE Transactions on Microwave Theory and Techniques

Volumn 59, Issue 12 PART 1, 2011, Pages 3037-3047

  Kim, Chan Ho ^a   Chang, Kai ^a  

^a Department of Electrical and Computer Engineering   (United States)

Author keywords

Bandpass filters (BPFs); dual band; microstrip filters; p i n diodes; resonators; switchable filters

Indexed keywords

COUPLING COEFFICIENT; DESIGN GRAPHS; DUAL BAND; DUAL-BAND BANDPASS FILTER; ELECTROMAGNETIC SIMULATION; EXTERNAL QUALITY FACTOR; FEED LINE; GEOMETRIC PARAMETER; HARMONIC RATIOS; MICROSTRIPES; PASS BANDS; PIN DIODE; SPIRAL TYPE; STEPPED IMPEDANCE RESONATOR; SWITCHABILITY; SWITCHABLE; TRANSMISSION ZEROS; WIDE UPPER STOPBAND;

MICROWAVE FILTERS; RESONATORS;

BANDPASS FILTERS;

EID: 83855161644     PISSN: 00189480     EISSN: None     Source Type: Journal    
DOI: 10.1109/TMTT.2011.2168973     Document Type: Article

References (20)

1. J.-T. Kuo, T.-H. Yeh, and C.-C. Yeh, "Design of microstrip bandpass filters with a dual-passband response," IEEE Trans. Microw. Theory Te c h., vol. 53, no. 4, pp. 1331-1337, Apr. 2005.
2. C.-F. Chen, T.-Y. Huang, and R.-B. Wu, "Design of dual-and triple-passband filters using alternately cascaded multiband resonators," IEEE Trans. Microw. Theory Tech., vol. 54, no. 9, pp. 3550-3558, Sep. 2006. (Pubitemid 44335042)
3. M.-L. Chuang, M.-T. Wu, and S.-M. Tsai, "Dual-band filter design using L-shaped stepped impedance resonators," IET Microw. Antennas Propag., vol. 4, no. 7, pp. 855-862, 2010.
4. F.-C. Chen and Q.-X. Chu, "Novel multistub loaded resonator and its application to high-order dual-band filters," IEEE Trans. Microw. Theory Tech., vol. 58, no. 6, pp. 1551-1556, Jun. 2010.
5. Q.-X. Chu, F.-C. Chen, Z.-H. Tu, and H. Wang, "A novel crossed resonator and its applications to bandpass filters," IEEE Trans. Microw. Theory Tech., vol. 57, no. 7, pp. 1753-1759, Jul. 2009.
6. S. Luo, L. Zhu, and S. Sun, "A dual-band ring-resonator bandpass filter based on two pairs of degenerate modes," IEEE Trans. Microw. Theory Te c h., vol. 58, no. 12, pp. 3427-3432, Dec. 2010.
7. J. Lee and K. Sarabandi, "A synthesis method for dual-passband microwave filters," IEEE Trans. Microw. Theory Tech., vol. 55, no. 6, pp. 1163-1170, Jun. 2007. (Pubitemid 46906760)
8. G.-L. Dai, Y.-X. Guo, and M.-Y. Xia, "Dual-band bandpass filter using parallel short-ended feed scheme," IEEE Microw. Wireless Compon. Lett., vol. 20, no. 6, pp. 325-327, Jun. 2010.
9. X. Y. Zhang and Q. Xue, "Novel centrally loaded resonators and their applications to bandpass filters," IEEE Trans. Microw. Theory Tech., vol. 56, no. 4, pp. 913-921, Apr. 2008. (Pubitemid 351506238)
10. X. Y. Zhang and Q. Xue, "High-selectivity tunable bandpass filters with harmonic suppression," IEEE Trans. Microw. Theory Tech., vol. 58, no. 4, pp. 964-969, Apr. 2010.
11. Y.-S. Lin, P.-Y. Chang, and Y.-S. Hsieh, "Compact electronically switchable parallel-coupled microstrip bandpass filter with wide stopband," IEEE Microw. Wireless Compon. Lett., vol. 18, no. 4, pp. 254-256, Apr. 2008. (Pubitemid 351479176)
12. J. Lee and K. Sarabandi, "An analytic design method for microstrip tunable filters," IEEE Trans. Microw. Theory Tech., vol. 56, no. 7, pp. 1699-1706, Jul. 2008.
13. J. S. Hong and M. J. Lancaster, Microstrip Filters for RF/Microwave Applications. New York: Wiley, 2001.
14. M. Matsuo, H. Yabuki, and M. Makimoto, "The design of a half-wavelength resonator BPF with attenuation poles at desired frequencies," in IEEE MTT-S Int. Microw. Symp. Dig., 2000, pp. 1181-1184.
15. C.-W. Tang and Y.-K. Hsu, "A microstrip bandpass filter with ultra-wide stopband," IEEE Trans. Microw. Theory Tech., vol. 56, no. 6, pp. 1468-1472, Jun. 2008.
16. L.-H. Hsieh and K. Chang, "Dual-mode quasi-elliptic-function bandpass filters using ring resonators with enhanced-coupling tuning stubs," IEEE Trans. Microw. Theory Tech., vol. 50, no. 5, pp. 1340-1345, May 2002. (Pubitemid 34684599)
17. G. L. Matthaei, L. Young, and E. M. T. Jones, Microwave Filters, Impedance-Matching Networks, and Coupling Structures. Dedham, MA: Artech House, 1980, ch. 11.
18. J.-T. Kuo, S.-P. Chen, and M. Jiang, "Parallel-coupled microstrip filters with over-coupled end stages for suppression of spurious responses," IEEE Microw. Wireless Compon. Lett., vol. 13, no. 10, pp. 440-442, Oct. 2003.
19. M. Jiang, M.-H. Wu, and J.-T. Kuo, "Parallel-coupled microstrip filters with over-coupled stages for multispurious suppression," in IEEE MTT-S Int. Microw. Symp. Dig., 2005, pp. 687-690. (Pubitemid 44479030)
20. S.-C. Lin, "Microstrip dual/quad-band filters with coupled lines and quasi-lumped impedance inverters based on parallel-path transmission," IEEE Trans. Microw. Theory Tech., vol. 59, no. 8, pp. 1937-1946, Aug. 2011.