Electronic tunable filters with dielectric varactors

Details Electronic tunable filters with dielectric varactors Electronic tunable filters with dielectric varactors

2005-06-07

2005-06-07

Jones, Stephen E. (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S202000

Reexamination Certificate

active

06903633

ABSTRACT:
A radio frequency electronic filter includes an input, an output, and first and second resonators coupled to the input and the output, with the first resonator including a first voltage tunable dielectric varactor and the second resonator including a second voltage tunable dielectric varactor. The resonators can include a lumped element resonator, a ceramic resonator, or a microstrip resonator. Additional voltage tunable dielectric varactors can be connected between the input and the first resonator and between the second resonator and the output. Voltage tunable dielectric varactors can also be connected between the first and second resonators.

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