Patent ID: 7303947
Filing Date: 2007-12-04
Classification: H01L

Abstract:
1. A method for making a microwave power device, said method comprising the steps of: procuring a microwave FET including an active surface bearing at least a gate electrode, a drain electrode, and at least first and second source electrodes separated by at least one gate and drain electrodes; making an electrically conductive bridge thermally and electrically connected to said source electrodes, and extending over, but not electrically contacting, said gate or drain electrodes, thus providing electrical communication between said first and second source electrodes; procuring a sheet of dielectric material defining first and second broad sides; affixing said active side of said FET to said first broad side of said dielectric sheet, with said electrically conductive bridge facing said first side of said sheet of dielectric material; defining an electrically and thermally conductive through via extending through said dielectric sheet at least over said bridge, said through via making electrical and thermal contact with at least said bridge, to produce electrical contacts adjacent said second side of said dielectric sheet accessing said source electrodes of said FET, and also providing a thermal path from said bridge to said second side of said dielectric sheet.