Title :
Analysis and realisation of the LINC transmitter using the combined analogue locked loop universal modulator (CALLUM)
Author :
Chan, K.Y. ; Bateman, A. ; Li, M.
Author_Institution :
Centre for Commun. Res., Bristol Univ., UK
Abstract :
A novel modulator and transmitter subsystem is presented which provides amplification through RF synthesis. The technique has the potential for 100% dc to RF conversion efficiency whilst providing a highly linear output. Based on the LINC concept, the modulator employs feedback around the entire transmitter subsystem to maintain linearity and efficiency with practical component tolerances
Keywords :
frequency convertors; frequency synthesizers; modulators; phase locked loops; radio transmitters; radiofrequency amplifiers; CALLUM; LINC transmitter; RF synthesis; amplification; combined analogue locked loop universal modulator; conversion efficiency; efficiency; feedback; linearity; transmitter subsystem; Chirp modulation; Equations; Linearity; Open loop systems; Phase modulation; Radio frequency; Radio transmitters; Radiofrequency amplifiers; Tracking loops; Voltage-controlled oscillators;
Conference_Titel :
Vehicular Technology Conference, 1994 IEEE 44th
Conference_Location :
Stockholm
Print_ISBN :
0-7803-1927-3
DOI :
10.1109/VETEC.1994.345079
