Continuously variable filter

Details Continuously variable filter Continuously variable filter

2005-05-03

2005-05-03

Pascal, Robert (Department: 2817)

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

C333S017300, C333S0990MP

Reexamination Certificate

active

06888422

ABSTRACT:
A continuously variable filter (110) that includes at least one filter element (146). The filter also includes a fluidic dielectric (108) having a permittivity and a permeability, a composition processor (101) adapted for dynamically changing a composition of the fluidic dielectric (108), and a controller (136) for controlling the composition processor (101) to selectively vary the permittivity and/or the permeability in response to a filter control signal (137). The filter element (146) is at least partially coupled to the fluidic dielectric (108). A second fluidic dielectric having a different composition than the first fluidic dielectric can be provided and a second filter element (148) can be partially coupled to the second fluidic dielectric. The controller (136) and composition processor (101) also can be adapted for varying the permittivity and/or permeabiliity of the fluidic dielectric (108).

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