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“Saturation Etching” is the method we have developed for decapsulating silver wire packages using a chemical solution. This method is also effective for copper wire packages, and damages to wires can be minimized by dissolving copper into acid.
A low phase-shift temperature compensation attenuator has been successfully developed. Our invented circuit utilizes new variable-Q FET resonators. By using this configuration, the dynamic range of the attenuation can be arbitrarily determined and the phase shift with temperature change can be reduced. To verify this methodology, we have fabricated an MMIC attenuator, and the circuit has achieved...
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