METHOD FOR HIGH-FREQUENCY AMPLIFIER USING POWER GAIN-BOOSTING TECHNIQUE

摘要

The present invention provides a power gain-boosting technique for an amplifier in order to compensate for the decrease of Gmag in a transistor at high frequencies. A power gain-boosting technique of the present invention comprises the steps of: finding the Maximum Unilateral Gain or Mason's Invariant U of a transistor; designing a linear, lossless, reciprocal network embedding the transistor so that the final equivalent S-, Y-, or Z-parameters satisfy the condition:;S21S12=Y21Y12=Z21Z12=-[(2U-1)+2U(U-1)];;embedding the transistor into the linear, lossless, reciprocal network; and constructing simultaneous conjugate matching.

主权项

1. A gain-boosting method for a high frequency amplifier, comprising the steps of:
finding the Maximum Unilateral Gain or Mason's Invariant U of a transistor; designing a linear, lossless, reciprocal network embedding the transistor so that the final equivalent S-, Y-, or Z-parameters satisfy the condition:S21S12=Y21Y12=Z21Z12=-[(2U-1)+2U(U-1)]; embedding the transistor into the linear, lossless, reciprocal network; and constructing simultaneous conjugate matching.