High power linearized RF phase shifter using anti-series diodes

We present the design and development of a new reflection-type phase shifter (RTPS) that uses anti-series diodes to achieve high linear output power. Using this topology, the PS provides a continuous phase shift of 180/spl deg/ at 1.88GHz. The measured 1-dB compressed RF output power (P/sub 1 dB/) available from the PS is greater than 28dBm over the entire phase-control range.