Tunable filter having capacitively coupled tuning elements

Details Tunable filter having capacitively coupled tuning elements Tunable filter having capacitively coupled tuning elements

1992-11-20

1995-02-21

Ham, Seungsook

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

333175, H03H 712

Patent

active

053920112

ABSTRACT:
A tunable filter (100) is provided including a first resonator (110) and a second resonator (120). The bandwidth of the tunable filter is maintained constant by providing purely inductive coupling (114) between the first and the second resonators (110 and 120). The first and the second resonators (110 and 120) include tuning elements (108-109 and 118-119) which are second coupled to each other by means of a capacitor (130) to improve image rejection performance of the tunable filter (100).

REFERENCES:
patent: 1227113 (1917-05-01), Campbell
patent: 3049682 (1962-08-01), Waring
patent: 3534301 (1970-10-01), Golembeski
patent: 3798578 (1974-03-01), Konishi
patent: 4157517 (1979-06-01), Kneisel
patent: 4264881 (1981-04-01), De Ronde
patent: 4430630 (1984-02-01), Sakamoto
patent: 4578656 (1986-03-01), Lacour
patent: 4586007 (1986-04-01), Ciszek
patent: 4601062 (1986-07-01), Hettiger
patent: 4609829 (1986-09-01), Higgins
patent: 4661790 (1987-04-01), Gannon
patent: 4785271 (1988-11-01), Higgins
patent: 4839617 (1989-06-01), Speake
patent: 4940955 (1990-07-01), Higgins
patent: 4992759 (1991-02-01), Giraudeau
patent: 5021757 (1991-06-01), Kobayashi
patent: 5066933 (1991-11-01), Komeda
patent: 5138288 (1992-08-01), Blackburn
patent: 5150085 (1992-09-01), Hales
patent: 5241291 (1993-08-01), Blackburn

Affiliated with

Also associated with

Rating

Tunable filter having capacitively coupled tuning elements does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tunable filter having capacitively coupled tuning elements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tunable filter having capacitively coupled tuning elements will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1933717