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The breakdown voltage of a FET stack is limited by the unequally divided voltage drop among the stacked FETs. A novel stack composed of varying periphery FETs is proposed. Uniform voltage distribution, and thus much higher breakdown voltage, can be achieved by carefully designing the periphery of each FET. A FET stack with varying periphery was designed and fabricated. Significant improvement in breakdown...
Stacked Crystal Filters (SCFs) are used in Bandpass filters and other applications where frequency control is required. SCFs use the Solidly Mounted Resonator (SMR) structure to enable operations at RF frequencies, typically 1-5 GHz. In the response spectrum of the SCFs, besides the main resonance mode, there are some unwanted additional modes present which affect the filter's performance away from...
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