Title :
A Precision MMIC Phase Shifter for MLS Applications
Author :
Fikart, J.L. ; Walters, P.C. ; Wlodyka, M.J.
Abstract :
A monolithic digital phase shifter with novel means of precise phase adjustment has been developed. A conventional switched low-pass/high-pass filter structure has been modified for precision phase control. For very fine phase adjustments, in the order of a few degrees, the adjustment is obtained by allowing a relatively small variable signal through the "off" channel and adding it vectorially to the main signal. Tests on a sizeable lot confirmed the feasibility of this approach in dealing with process variations.
Keywords :
Circuit optimization; Equivalent circuits; FETs; Low pass filters; MMICs; Multilevel systems; Phase shifters; Phased arrays; Switches; Switching circuits;
Conference_Titel :
Microwave Conference, 1990. 20th European
Conference_Location :
Budapest, Hungary
DOI :
10.1109/EUMA.1990.336317
