Title :
MMIC vector modulator for a crossbar BFN
Author :
Grajal, J. ; Gismero, J. ; Mahfoudi, M.
Author_Institution :
Polytechnical Univ. of Madrid, Spain
fDate :
6/20/1996 12:00:00 AM
Abstract :
A 1.4-2.7 GHz monolithic vector modulator with continuous amplitude and phase control has been developed. Each state within a full 360° phase range and a dynamic range >15 dB is generated by combining two of three vectors which have variable amplitude and 120° apart. The control in amplitude for the three vectors is performed by sets of two MESFETs working as dual-gate MESFETs, and the phase shift of 120° for these vectors is obtained through LC filters over the 1.4-2.7 GHz band. The circuit will be used as the control node in a crossbar beam forming network (CBFN)
Keywords :
MESFET integrated circuits; MMIC; modulators; 1.4 to 2.7 GHz; LC filters; MMIC vector modulator; continuous amplitude control; continuous phase control; control node; crossbar BFN; crossbar beam forming network; dual-gate MESFETs; dynamic range; phase shift;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19960797
