Novel Compact Interdigital Bandpass Filters with Multilayer Stepped Impedance Resonators/Folded Quarter–Wavelength Resonators

Abstract:

Article Preview

Novel compact interdigital bandpass filters (BPFs) which used multilayer stepped impedance resonators (SIRs)/folded quarter–wavelength resonators were presented. Two measures were taken to reduce the sizes of the proposed filters. Firstly, two resonators (SIRs and folded quarter–wavelength resonators) with novel structures were designed. Secondly, all the designed resonators were located on different dielectric layers. The proposed interdigital BPFs, which were simulated with the high frequency structure simulator (HFSS), show excellent performance and could realize the miniaturization purpose. Furthermore, it is found that the proposed filter with folded quarter–wavelength resonators is more excellent in realizing miniaturization and improving performance than that with SIRs.

Info:

Periodical:

Edited by:

Sean Li, Thiam Teck Tan and Danyang Wang

Pages:

19-24

Citation:

J. M. Wu et al., "Novel Compact Interdigital Bandpass Filters with Multilayer Stepped Impedance Resonators/Folded Quarter–Wavelength Resonators", Key Engineering Materials, Vol. 547, pp. 19-24, 2013

Online since:

April 2013

Export:

Price:

$41.00

[1] C.Y. Chang, C.C. Chen, H. J. Huang, Folded quarter–wave resonator filters with Chebyshev, flat group delay, or quasielliptical function response, IEEE MTT–S Int. Microwave. Symp. Dig. 3 (2002) 1609–1612.

DOI: https://doi.org/10.1109/mwsym.2002.1012165

[2] C.Y. Chang, C.C. Chen, A novel coupling structure suitable for cross–coupled filters with folded quarter–wave resonators, IEEE Microwave Wireless Comp. Lett. 13 (2003) 517–519.

DOI: https://doi.org/10.1109/lmwc.2003.819957

[3] C.C. Chen, Y.R. Chen, C.Y. Chang, Miniaturized microstrip cross–coupled filters using quarter–wave or quasi–quarter–wave resonators, IEEE Trans. MTT 51 (2003) 120–131.

DOI: https://doi.org/10.1109/tmtt.2002.806924

[4] J.S. Hong, M.J. Lancaster, Microstrip Filters for RF/Microwave Applications, Wiley, New York, 2001, p.129–130.

[5] S.C. Lin, P.H. Deng, Y.S. Lin, C.H. Wang, C.H. Chen, Wide–stopband microstrip bandpass filters using dissimilar quarter–wavelength stepped–impedance resonators, IEEE Trans. MTT 54 (2006) 1011–1018.

DOI: https://doi.org/10.1109/tmtt.2005.864139

[6] S. Jovanovic, A. Nesic, Microstrip bandpass filter with new type of capacitive coupled resonator, Electron. Lett. 41 (2005) 19–21.

DOI: https://doi.org/10.1049/el:20057267