Microstrip line parallel-coupled-resonator filter with...

Details Microstrip line parallel-coupled-resonator filter with... Microstrip line parallel-coupled-resonator filter with...

2006-02-07

2006-02-07

Ham, Seungsook (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S219000

Reexamination Certificate

active

06995635

ABSTRACT:
The parallel-coupled-resonator coupled line filter with open-and-short end, comprises an input port for receiving an input signal; a bent first resonator and a bent third resonator where their both ends are open circuited; a second resonator whose both ends are shorted to ground; and an output port for outputting signal. Wherein, designing cross coupling between the third resonator and the first resonator to obtain a steep frequency response and reduce the interference of the image signal.

REFERENCES:
patent: 6559741 (2003-05-01), Takeda
patent: 2003/0085780 (2003-05-01), Wang
patent: 2004/0251991 (2004-12-01), Rahman et al.
patent: 63219202 (1988-09-01), None
patent: 02206201 (1990-08-01), None
patent: 03049301 (1991-03-01), None

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