Filtering arrangement with impedance step resonators

Details Filtering arrangement with impedance step resonators Filtering arrangement with impedance step resonators

1997-09-11

2000-01-04

Chin, Wellington

Wave transmission lines and networks

Resonators

With tuning

333219, 3332191, 455334, H01P 700

Patent

active

060114525

ABSTRACT:
A radio-frequency filter for a radio apparatus operating on two frequency bands is based on impedance step resonators, wherein two interconnected resonator sections (L2, L1) having different impedances are dimensioned such that the resonator's fundamental resonating frequency (f0) is on the lower operating frequency band and a certain harmonic resonating frequency (fs1) is on the higher operating frequency band. The filter may have separate ports (port 2, port 3) for the signals of the different frequency bands and they can be isolated from each other using additional filtering (LC1, LC2).

REFERENCES:
patent: 4757288 (1988-07-01), West
patent: 5103197 (1992-04-01), Turunen
patent: 5177458 (1993-01-01), Newell et al.
patent: 5298873 (1994-03-01), Ala-Kojola
patent: 5387886 (1995-02-01), Takalo et al.
patent: 5392011 (1995-02-01), Li
patent: 5506554 (1996-04-01), Ala-Kojola
patent: 5508668 (1996-04-01), Prokkola
patent: 5604471 (1997-02-01), Rattila et al.
patent: 5675301 (1997-10-01), Nappa et al.
patent: 5734305 (1998-03-01), Ervasti
patent: 5739735 (1998-04-01), Pyykko et al.

Affiliated with

Also associated with

Rating

Filtering arrangement with impedance step resonators does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Filtering arrangement with impedance step resonators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Filtering arrangement with impedance step resonators will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1075782