Browse > Article

The Design of LTCC MLC Bandpass Filters using λ/4 Hair-pin Resonators  

성규제 (한경대학교 전자공학과)
여동훈 ((주)한원 마이크로웨이브)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.14, no.1, 2003 , pp. 14-19 More about this Journal
Abstract
In this paper, a λ/4 hair-pin resonator is proposed to reduce the size of resonators. A LTCC MLC bandpass filter is designed using the λ/4 hair-pin resonators. The electromagnetic coupling structure between two planar resonators is analysed. The equivalent circuit is derived to explain the behavior of the LTCC MLC bandpass filter using λ/4 hair-pin resonators. A design procedure is also described. The simulated and measured results of 1.8 GHz band 2-pole bandpass filter are presented.
Keywords
LTCC; MLC; λ/4 Hair-pin Resonator; Bandpass Filter;
Citations & Related Records
연도 인용수 순위
  • Reference
1 T. Ishizaki, 'A very small dielectric planar filter for portable telephones', IEEE Trans. on Micro-wave Theory Tech., vol. MTT-42, no. 11, pp.2017-2022, Nov. 1994
2 M. Sagawa, 'Geometrical structures and funda-mental characteristics of microwave steped -impedance resonators', IEEE Trans. on Micro- wave Theory Tech., vol. MTT-45, no. 7, pp.1078-1085, July 1997
3 G. Matthaei, L. Young and E. M. T. Jones, Microwave Filters, Impedance Matching Net-works, McGraw Hill, 1980
4 J. Sheen, 'LTCC-MLC duplexer for DCS-1800',IEEE Trans. on Microwave Theory Tech., vol.MTT-47, no. 9, pp. 1833-1890, Sept. 1999
5 S. B. Cohn, 'Direct-coupled resonator filters',Proc. lRE, vol. 45, pp. 187-196, Feb. 1957
6 M. Makimoto, 'Bandpass filters using parallel coupled stripline stepped impedance resonators',IEEE Trans. Microwave Theory Tech., vol.MTT-28, pp. 1413-1417, Dec. 1980
7 R. Levy, 'Theory of directed-coupled-cavity filters, 1EEE Trans. on Microwave Theory Tech., vol. MTT-15, no. 6, pp. 340-347, June 1967
8 G. L. Matthaei, 'Comb-line band-pass filters of narrow or moderate bandwidth', Microwave J.,vol. 6, pp. 82-96, Aug. 1963
9 성규제, '공진기의 결합 노드 위치가 바뀐 대역 통과 여파기의 설계', 한국전자파학회 종합학술 발표회 논문집, 12(1), pp. 49-53, 2002년