Method and apparatus for stabilizing the temperature of...

Wave transmission lines and networks – Coupling networks – Wave filters including long line elements

Reexamination Certificate

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C333S229000, C333S234000, C333S0990MP

Reexamination Certificate

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11199772

ABSTRACT:
A dielectric-based filter includes a thermally insulated housing, at least one filter formed from a dielectric material disposed inside the insulated housing, and a temperature maintenance device having a heating component and a cooling component for maintaining the temperature of the filter inside of the insulated housing within a temperature range. In a preferred aspect of the invention, the temperature maintenance device includes a thermoelectric cooler. The device permits the use of temperature-dependent low loss, high dielectric constant materials in filtering/resonator applications. During operation of the device, the dielectric-based filter is maintained at substantially room temperature.

REFERENCES:
patent: 5995851 (1999-11-01), Lim
patent: 6212404 (2001-04-01), Hershtig
patent: 6480706 (2002-11-01), Mimura et al.
patent: 6496087 (2002-12-01), Hattori et al.
patent: 2 338 478 (1999-12-01), None
Pullar, R.C., et al., “Dielectric Loss of Titanium Oxide,” London South Bank University, 8 pp., Jul. 30, 2004.

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