| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bias circuit for power amplifier capable of being applied to a high frequency of microwave/millimeter wave/submillimeter wave band by suppressing a ripple voltage ΔV of the bias circuit for power amplifier even when a difference frequency Δf is several hundred MHz and smoothing a bias circuit voltage. <P>SOLUTION: The bias circuit for power amplifier includes: a first bonding wire connected to a bias circuit junction point of an output side matching transmission line of a power amplifier; a second bonding wire connected to a termination of the first bonding wire; an open stub transmission line connected to the termination of the first bonding wire; and a bias reservoir capacitor connected to a termination of the second bonding wire. <P>COPYRIGHT: (C)2012,JPO&INPIT |
