On-wafer tuner system and method
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United States of America Patent
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Nov 22, 2022
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app pub date -
Nov 24, 2020
filing date -
Nov 24, 2020
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Abstract
A balanced on-wafer load pull tuner system includes an intelligent, independent and universal mechanical balancing and contact controlling device, supporting automatic microwave single or multi-probe slide screw tuners. It allows contacting and stable on-wafer testing of sub-micrometric devices. Ultra-low loss rigid airlines (bend-lines) used to connect the tuner with the semiconductor chips, in order to improve the tuning range at the DUT reference plane, transfer mechanical movements of the wafer probes attached to the rigid bend-lines, when the tuner mobile carriages move horizontally. A precisely controlled counter-weight allows contacting the DUT and balanced load pull operation by controlling the center of gravity of the assembly.
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