Preselector filter with tunable narrowband excision

Details Preselector filter with tunable narrowband excision Preselector filter with tunable narrowband excision

1994-08-19

1995-06-20

Ham, Seungsook

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333246, H01P 1203, H01P 1217

Patent

active

054264022

ABSTRACT:
A planar preselector filter with tunable narrowband excision composed of a errite substrate having a microstrip line with a fixed-tuned bandpass filter on one surface and a plurality of slotline resonators etched in a ground plane on an opposing surface. The fixed tuned bandpass filter is composed of short resonant elements of microstrip, having a length that is one-half the guide wavelength at the center frequency of its passband. The slotline resonators are positioned on the opposing surface of the substrate such that it suppresses or excises a predetermined narrowband of frequencies within the passband of the fixed-tuned bandpass filter. Moreover, the center frequency of the narrowband excision is varied by applying a tunable magnetic bias field of a predetermined strength across the ferrite substrate.

REFERENCES:
patent: H000432 (1988-02-01), Mariani et al.
patent: 3753167 (1973-08-01), Cohn
patent: 4297661 (1981-10-01), Stegens
patent: 5142255 (1992-08-01), Chang et al.

Affiliated with

Also associated with

Rating

Preselector filter with tunable narrowband excision does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preselector filter with tunable narrowband excision, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preselector filter with tunable narrowband excision will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1846900