Title :
An offset-free LPF for π/4-shift QPSK signal generator
Author :
Tanimoto, Hiroshi ; Itakura, Tetsuro ; Ueno, Takashi ; Yasuda, Akira ; Oda, Kazuhiro
Author_Institution :
Res. & Dev. Center, Toshiba Corp., Kawasaki, Japan
fDate :
12/1/1996 12:00:00 AM
Abstract :
An intrinsically offset-free third-order active-RC LPF with 200 MHz cutoff is described. A π/4-shift QPSK signal generator for the personal handy phone system (PHS) was fabricated including the lowpass filters (LPF´s) with a standard 0.6-μm CMOS process, It operates from a 2.7 V power supply and dissipates 45 mW. The active die size is 2.0 mm×2.1 mm
Keywords :
CMOS integrated circuits; RC circuits; active filters; low-pass filters; mixed analogue-digital integrated circuits; personal communication networks; quadrature phase shift keying; signal generators; π/4-shift QPSK signal generator; 0.6 mum; 2.7 V; 200 kHz; 45 mW; CMOS process; active die size; cutoff frequency; offset-free third-order active-RC low-pass filter; personal handy phone system; power dissipation; power supply; Capacitors; Circuit noise; Cutoff frequency; Degradation; Dynamic range; Finite impulse response filter; Operational amplifiers; Prototypes; Quadrature phase shift keying; Signal generators;
Journal_Title :
Solid-State Circuits, IEEE Journal of
