An X-Band 5-Bit Active Phase Shifter Based on a Novel Vector-Sum Technique in 0.18μm SiGe BiCMOS

A 5-bit 360° active phase shifter of digital control with a novel two-step vector-sum technique in 0.18\mu \text{m} SiGe process is presented in this brief for X-band phased arrays. The two-step vector-sum technique is based on a sub-phase shifter array controlled by high quality logic circuit to...

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