Title :
Automatic adjustment of quadrature modulators
Author :
Faulkner, Michael ; Mattsson, Thomas
Author_Institution :
Dept. of Electr. & Electron. Eng., Victoria Univ. of Technol., Melbourne, Vic., Australia
Abstract :
A technique for the automatic correction of errors in RF quadrature modulators is described. The method uses a diode detector to provide amplitude feedback to guide the adaptation of baseband circuits that correct for carrier leak, differential gain and phase mismatch errors.
Keywords :
adaptive control; mobile radio systems; phase shift keying; QPSK; RF quadrature modulators; adaptation of baseband circuits; amplitude feedback; automatic correction of errors; carrier leak correction; differential gain correction; diode detector; phase mismatch error correction; quadrature modulators automatic adjustment;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19910139
