Varactor tunable coupled transmission line band reject filter

Details Varactor tunable coupled transmission line band reject filter Varactor tunable coupled transmission line band reject filter

1987-10-26

1989-01-17

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333204, 333205, 333235, 333246, H01P 1203, H01P 120

Patent

active

047990341

ABSTRACT:
A tunable coupled transmission line band reject filter for use in the microwave frequency range includes a coupled transmission line having first and second line sections. Each line section has an input end and an output end. A transmission line exhibits a natural notch at a particular frequency. A first varactor is coupled between the input ends of the first and second sections. A second varactor is coupled between the output ends of the first and second sections. A D.C. bias voltage across the varactor diodes controls the center frequency of the resulting notch filter.

REFERENCES:
patent: 3864824 (1975-02-01), Watson et al.
patent: 4121182 (1978-10-01), Makimoto et al.
patent: 4283694 (1981-08-01), Pauker
patent: 4383227 (1983-05-01), de Ronde
patent: 4468644 (1984-08-01), Teague et al.
Torii et al-"Varactor-Tuned UHF Tuner Using Microstrip Lines", IEEE Trans. on Consumer Electronics, Feb. 1977; pp. 44.55.

Affiliated with

Also associated with

Rating

Varactor tunable coupled transmission line band reject filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Varactor tunable coupled transmission line band reject filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Varactor tunable coupled transmission line band reject filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2414796