Ka-Band Digital Phase MMIC

Reference#: P01672

A broadband, 4-bit MMIC phase shifter for use in a phased array antenna is provided. The four bit selectable phase shifter for use in a phased array antenna of the present invention, which selectably causes an input signal to be shifted in phase, includes a first bit for selectively providing a 180.degree. phase shift, wherein the first bit is a line/reflected bit; a second bit for selectively providing a 90.degree. phase shift, wherein the second bit is a reflected bit; a third bit for selectively providing a 45.degree. phase shift, wherein the third bit is a reflected bit; and a fourth bit for selectively providing a 22.5.degree. phase shift, wherein the fourth bit is a high pass/low pass bit. The phase shifter of the present invention is compact, broadband and has good insertion loss and balance, yet uses a standard 0.25 mm PHEMT process with standard bias voltages.

Patent Status: U.S. patent(s) 6806792 issued.