Title :
A subharmonically injected LC delay line oscillator for 17-GHz quadrature LO generation
Author :
Ma, Dennis K. ; Long, John R.
Author_Institution :
Synopsys Canada Corp., Mississauga, Ont., Canada
Abstract :
An injection-locked delay line oscillator multiplies a 5-6-GHz input by 3 to generate I/Q LO signals for 17-GHz wireless networking applications. I/Q errors caused by asymmetric injection are minimized by symmetric injection via a passive polyphase prefilter. Passive delay lines set the measured free-running frequency of the LC ring oscillator to 16.24 GHz. The measured locking range for a 0 dBm (50 Ω) input is 14.6-17.86 GHz. Input-to-output phase noise degradation is negligible, and I/Q amplitude and phase errors are <0.17 dB and <2°, respectively. Power consumption of the 1.2×1.4 mm2 0.2 μm SiGe BiCMOS testchip (excluding buffers) is 22 mW at 2.2 V.
Keywords :
BiCMOS integrated circuits; Ge-Si alloys; delay lines; injection locked oscillators; passive filters; phase noise; wireless LAN; 0.2 microns; 14.6 to 17.86 GHz; 16.24 GHz; 17 GHz; 2.2 V; 22 mW; 5 to 6 GHz; 50 ohm; HiperLINK; I/Q LO signals; I/Q signal generation; LC delay line; LC ring oscillator; SiGe; SiGe BiCMOS testchip; asymmetric injection; delay line oscillator; injection locking; input-to-output phase noise; local-area networking; passive polyphase prefilter; quadrature LO generation; subharmonically injected oscillator; symmetric injection; wireless LAN; wireless networking; Degradation; Delay lines; Energy consumption; Frequency measurement; Germanium silicon alloys; Injection-locked oscillators; Phase noise; Ring oscillators; Signal generators; Silicon germanium; HiperLINK; I/Q; in-phase and quadrature; injection-locking; local oscillator; signal generation; subharmonic multiplication; symmetric and asymmetric $LC$ delay line; wireless local-area networking;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2004.831610
