Revista: Electronics Letters. Vol. 32. No. 13. Pp. 1210-1212. Junio 1996.

Autores: J. Grajal, J. Gismero, M. Mahfoudi

A 1.4-2.7 GHz monolithic vector modulator with continuous amplitude and phase control has been developed. Each state within a full 360/spl deg/ phase range and a dynamic range >15 dB is generated by combining two of three vectors which have variable amplitude and 120/spl deg/ 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/spl deg/ 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).