Micro strip filter having a varactor coupled between two microst

Details Micro strip filter having a varactor coupled between two microst Micro strip filter having a varactor coupled between two microst

1991-03-27

1992-08-11

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333205, 333235, 333134, H01P 1203

Patent

active

051382881

ABSTRACT:
A transmission line filter is provided which includes a first resonator having open ends being coupled to a second resonator disposed on a substrate. A transmission zero frequency is tuned by means of a varactor which is coupled between the first and the second resonator. The first resonator includes a terminal for applying a control voltage to the varactor for varying its capacitance.

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patent: 4940955 (1990-07-01), Higgins, Jr.
patent: 5021757 (1991-06-01), Kobayashi et al.

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