Compact microstrip coupled-line bandpass filter with four transmission zeros

IEEE Microwave and Wireless Components Letters

Volumn 15, Issue 9, 2005, Pages 579-581

  Wu, Chao Huang ^a,b   Lin, Yo Shen ^a,b   Wang, Chi Hsueh ^a,b   Chen, Chun Hsiung ^a,b  

^a IEEE   (Taiwan)

^b NATIONAL TAIWAN UNIVERSITY   (Taiwan)

Author keywords

Bandpass filter; Coupled line; Microstrip; Multiple cross couplings

Indexed keywords

COUPLED-LINE; MULTIPLE CROSS-COUPLINGS; TRANSMISSION ZEROS;

CAPACITANCE; MICROSTRIP LINES;

BANDPASS FILTERS;

EID: 27844529826     PISSN: 15311309     EISSN: None     Source Type: Journal    
DOI: 10.1109/LMWC.2005.855375     Document Type: Conference Paper

References (10)

1. R. Levy, "Filters with single transmission zeros at real or imaginary frequencies," IEEE Trans. Microwave Theory Tech., vol. 24, no. 4, pp. 172-181, Apr. 1976.
2. K. T. Jokela, "Narrow-band stripline or microstrip filters with transmission zeros at real and imaginary frequencies," IEEE Trans. Microwave Theory Tech., vol. 28, no. 6, pp. 542-547, Jun. 1980.
3. K. Wada and I. Awai, "Heuristic models of half-wavelength resonator bandpass filter with attenuation poles," Electron. Lett., pp. 400-401, Mar. 1999.
4. J.-R. Lee, J.-H. Cho, and S.-W. Yun, "New compact bandpass filter using microstrip λ/4 resonators with open stub inverter," IEEE Microw. Guided Wave Lett., vol. 10, no. 12, pp. 526-527, Dec. 2000.
5. Y.-M. Yan, Y.-T. Chang, H. Wang, R.-B. Wu, and C. H. Chen, "Highly selective microstrip bandpass filters in Ka band," in Proc. 32th Eur. Microwave Conf., 2002, pp. 1137-1140.
6. C.-M. Tsai, S.-Y. Lee, and C.-C. Tsai, "Performance of a planar filter using a 0° feed structure," IEEE Trans. Microwave Theory Tech., vol. 50, no. 10, pp. 2362-2367, Oct. 2002.
7. L.-H. Hsieh and K. Chang, "Tunable microstrip bandpass filters with two transmission zeros," IEEE Trans. Microwave Theory Tech., vol. 51, no. 2, pp. 520-525, Feb. 2003.
8. C.-Y. Chang, C.-C. Chen, and H.-J. Huang, "Folded quarter-wave resonator filters with Chebyshev, flat group delay, or quasielliptic function response," in IEEE MTT-S Int. Dig., 2002, pp. 1609-1612.
9. C.-Y. Chang and C.-C. Chen, "A novel coupling structure suitable for cross-coupled filters with folded quarter-wave resonators," IEEE Microwave Wireless Comp. Lett., vol. 13, no. 12, pp. 517-519, Dec. 2003.
10. Y.-S. Lin, C.-H. Wu, and C.-H. Chen. "Novel compact coupled-line bandpass filters based on quarter-wavelength resonators," in Proc. Asia-Pacific Microwave Conf. Abstracts, 2004, p. 15.