A Novel Miniature 1–22 GHz 90$^{circ}$ MMIC Phase Shifter with Microstrip Radial Stubs

摘要

A novel miniature ultra wide bandwidth 90 $^{circ}$ monolithic microwave integrated circuit phase shifter with microstrip radial stubs operated from 1 to 22 GHz is presented. The phase shifter exhibits a high performance. Within the whole bandwidth from 1 to 22 GHz, the phase error of the phase shifter is less than 3$^{circ}$ , the return losses of the different phase shift states are more than 14 dB, the insertion loss of all phase shift states are within 3.3$ pm $0.5 dB. The chip size of this phase shifter is 1.4 mm $,times,$1.8 mm $,times,$0.1 mm. The proposed phase shifter can be compatible with different polarity control signals without the need of drivers and can also be compatible with either analogue or digital control signals.