Compact Phase Accurate Low Loss S-Band 6-Bit Phase Shifter in a 5x5 mm2 Plastic Over Molded Package

This paper presents the design and performance of a compact phase accurate low loss S-band 6-bit digital phase shifter in a 5x5 mm(2) plastic over molded package. This S-band phase shifter has best in class RMS phase error of 1 degree over the 2.7-3.5 GHz range with a maximum insertion loss of 5 dB. RMS amplitude error varies from 0.2-0.4 dB over this band and phase accuracy is maintained at high input signal levels up to 30 dBm. With over molding, the design is capable of operating in high moisture environments. Typical applications are phased array radars and communications.