High reliability RF switch based on phase-change material
First Claim
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1. A radio frequency (RF) switch comprising:
- a heating element;
a thermally resistive material adjacent to first and second sides of said heating element;
a heat valve under said heating element;
a heat spreader under said heat valve and over a substrate;
a nugget comprising a thermally conductive and electrically insulating material situated on top of said heating element;
a phase-change material having an active segment situated approximately over said nugget and passive segments situated approximately under input/output contacts of said RF switch.
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Abstract
A radio frequency (RF) switch includes a heating element, a nugget, a phase-change material (PCM), and input/output contacts. The nugget comprises thermally conductive and electrically insulating material, and is situated on top of the heating element. The PCM has an active segment approximately situated over the nugget, and passive segments approximately situated under the input/output contacts. The PCM RF switch may include thermally resistive material adjacent to first and second sides of the heating element, and/or adjacent to first and second sides of the nugget. The PCM RF switch may include a heat valve under the heating element.
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Citations
15 Claims
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1. A radio frequency (RF) switch comprising:
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a heating element; a thermally resistive material adjacent to first and second sides of said heating element; a heat valve under said heating element; a heat spreader under said heat valve and over a substrate; a nugget comprising a thermally conductive and electrically insulating material situated on top of said heating element; a phase-change material having an active segment situated approximately over said nugget and passive segments situated approximately under input/output contacts of said RF switch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A radio frequency (RF) switch comprising:
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a heating element; a heat valve under said heating element; a heat spreader under said heat valve and over a substrate; a nugget comprising a thermally conductive and electrically insulating material situated on top of said heating element; a phase-change material having an active segment situated approximately over said nugget and passive segments situated approximately under input/output contacts of said RF switch. - View Dependent Claims (12, 13, 14, 15)
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Specification