Electrically tunable filters with dielectric varactors

Wave transmission lines and networks – Coupling networks – Frequency domain filters utilizing only lumped parameters

Reexamination Certificate

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Details

C333S175000

Reexamination Certificate

active

07145415

ABSTRACT:
This invention provides a voltage tunable filter comprising an input connection point, an output connection point, and at least one circuit branch electrically coupled to the input connection point and the output connection point and including a voltage tunable dielectric varactor electrically connected to an inductor. The voltage tunable filter can be one of a low-pass, high-pass, band-pass, or band-stop filter. The varactor can include built-in DC blocking capacitors.

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