| 摘要 |
Provided is a variable attenuator whereby loss of high frequency signals can be reduced. This variable attenuator is provided with: a coupler, which distributes high frequency signals inputted from an input port, and which outputs the thus distributed high frequency signals from a first output port, a second output port, and a third output port; and an attenuation adjustment unit having at least two FETs between the second output port and a grounding terminal, and between the third output port and the grounding terminal, said at least two FETs being connected in series by having a source terminal and a drain terminal therebetween. |
