Patent ID: 7123116

Claim:
A phase shifter comprising: a first field effect transistor having its first channel electrode directly connected to a first input/output terminal; a second field effect transistor having its first channel electrode directly connected to a second channel electrode of said first field effect transistor, and its second channel electrode connected directly to a second input/output terminal; a third field effect transistor having its first channel electrode connected directly to the second channel electrode of said first field effect transistor; a first inductor having its first terminal connected to a second channel electrode of said third field effect transistor, and its second terminal connected directly to a ground; a first resistor connected to a gate of the first field effect transistor; a second resistor connected to a gate of the second field effect transistor, the first resistor and second resistor being connected in parallel; a third resistor connected to a gate of the third field effect transistor; and a second inductor connected between the first channel electrode and second channel electrode of said third field effect transistor.