Back to results
US 9,431,691 B2Granted
Voltage tunable filters
AssigneeM-Tron Industries, Inc.
InventorsDexin Sun, Raleigh Benton Stelle, IV
Life of this patent
Estimating the term…
Abstract
A suspended line resonator and a tunable filter comprising multiple suspended line resonators. A microstrip resonator and a tunable filter comprising multiple microstrip resonators. A suspended substrate resonator and a tunable filter comprising multiple suspended substrate resonators.
Claims22
A tunable filter comprising:
- a suspended coupled line structure comprising:
- a substrate,
- line segments on both sides of the substrate, wherein the line segments are connected with multiple conductors extending through the substrate to form the suspended coupled line structure,
- a plurality of capacitors at an ungrounded end of the suspended coupled line structure, and
- a plurality of switching elements, wherein each switching element is coupled to a respective one of the plurality of capacitors to switch the respective capacitor into and out of circuit with the ungrounded end of the suspended coupled line structure.
2 more elements
A suspended line resonator comprising:
- a first electrically insulating substrate having two opposed sides,
- a first pair of electrically conductive traces, wherein one electrically conductive trace of the first pair of electrically conductive traces is provided on a first side of the two opposed sides of the first substrate, wherein each of the electrically conductive traces of the first pair of electrically conductive traces has a first grounded end and a second ungrounded end,
- first passageways through the first substrate between the electrically conductive traces of the first pair of electrically conductive traces, and
- conductive material in the first passageways for electrically coupling the conductive traces of the first pair of electrically conducive traces.
1 more element
Dependencies are inferred from the claim text.