Patent ID: 7843282

Claim:
A phase shifter comprising: a first single pole double throw (SPDT) switch; a second SPDT switch; a first electrical path between the first SPDT switch and the second SPDT switch; and a second electrical path between the first SPDT switch and the second SPDT switch, wherein the second electrical path has a different phase response than the first electrical path; wherein the first SPDT switch is configured to receive an RF signal at a first RF input/output node, and pass it to the second SPDT switch, via one of the first electrical path and the second electrical path, for output at a second RF input/output node; and wherein the first and second SPDT switches each include at least four transistors, wherein the at least four transistors are each three terminal transistors, and wherein a reference voltage is provided to only one of the three terminals of each of the at least four transistors.