Title :
An IF CMOS signal component separator chip for LINC transmitters
Author :
Shi, Bo ; Sundstrom, Lars
Author_Institution :
Dept. of Appl. Electron., Lund Univ., Sweden
Abstract :
The LINC transmitter provides linear amplification using highly nonlinear but power efficient amplifiers. The signal component separator (SCS) is a crucial function of LINC. This paper presents an IF SCS chip implemented in a 0.35 μm CMOS process using a design based on voltage-translinear circuits. The experimental LINC transmitter, built with the chip and nonlinear amplifiers, had output spurious levels some -55 dBc and -48 dBc for a NADC signal and an IS-95 signal, respectively. This implies a high degree of linearity
Keywords :
CMOS analogue integrated circuits; analogue processing circuits; radio transmitters; 0.35 micron; IF signal component separator chip; LINC transmitters; linear amplification; nonlinear amplifiers; submicron CMOS process; voltage-translinear circuits; Baseband; Circuit synthesis; Digital signal processing; High power amplifiers; Linearity; Particle separators; Signal generators; Signal processing; Transmitters; Voltage;
Conference_Titel :
Custom Integrated Circuits, 2001, IEEE Conference on.
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-6591-7
DOI :
10.1109/CICC.2001.929721
