A suitable different control signals multi-octave 90/spl deg/ digital/analogue compatible MMIC phase shifter

The design, fabrication and characterization of a suitable different control signals ultra-wideband 90/spl deg/ digital/analogue compatible monolithic phase shifter is described in this paper. High performance (low peak phase error /spl les/90/spl plusmn/5/spl deg/, low VSWR /spl les/1.5, low insertion loss variations /spl les/3.0/spl plusmn/0.5 dB, from 5 to 20 GHz frequency range) and small size (4.2 mm/spl times/0.6 mm/spl times/0.1 mm) are exhibited.