Coplanar waveguide filter and method of forming same

Details Coplanar waveguide filter and method of forming same Coplanar waveguide filter and method of forming same

2007-07-17

2007-07-17

Lee, Benny (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S219000, C333S0990MP

Reexamination Certificate

active

11046923

ABSTRACT:
A plurality of one-quarter wavelength coplanar resonators5ato5dare formed in series on a dielectric substrate1, and coplanar input/output terminal sections4aand4bare formed on the dielectric substrate at opposite ends of the series connection for coupling with resonators5aand5d, respectively. A center conductor line width w1of each of the resonators5ato5dis equal to a center conductor line width wioof each of the input/output terminal section4aand4b, but a ground conductor spacing d1of each of the resonators5ato5dis greater than a ground conductor spacing dioof each of input/output terminal section4aand4b.Maintaining the accuracy of design is facilitated and a reduction in the maximum current density in the resonator is enabled.

REFERENCES:
patent: 5750473 (1998-05-01), Shen
patent: 6262640 (2001-07-01), Tsujiguchi
patent: 0 933 831 (1999-08-01), None
Guru Subramanyam, et al., “Ferroelectric Thin-film Based Electrically Tunable Ku-band Coplanar Waveguide Components”, IEEE MTT-S International Microwave Symposium Digest, vol. 1 of 3, XP-001067319, May 20, 2001, pp. 471-474.
Hideyuki Suzuki, et al., “A Low-Loss 5 GHz Bandpass Filter Using HTS Quarter-Wavelength Coplanar Waveguide Resonators”, IEICE Trans. Electron., vol. E-85-C, No. 3, Mar. 2002, pp. 714-719.

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