Title :
A bipolar 1 GHz multi-decade monolithic variable-frequency oscillator
Author_Institution :
Hewlett-Packard Co., San Jose, CA, USA
Abstract :
Previous high-speed bipolar variable-frequency-oscillator (VFO) integrated circuits were based on the use of an emitter-coupled multivibrator because of its suitability for monolithic implementation, high speed, and symmetrical output waveforms. However, for emitter-coupled-multivibrator architecture, there is an inherent design conflict between maximum and minimum oscillation frequencies, making it difficult to achieve high-speed and wideband operation simultaneously. The design of a VFO that exhibits no such constraint is described. The circuit can be optimized for maximum-speed oscillation without compromising low-frequency performance. Implemented in a bipolar technology with 10-GHz peak f/sub 1/, the VFO covers a three-decade frequency range with a maximum oscillation frequency exceeding 1 GHz.<>
Keywords :
MMIC; bipolar integrated circuits; linear integrated circuits; microwave oscillators; radiofrequency oscillators; variable-frequency oscillators; 1 GHz; UHF; bipolar technology; high-speed; integrated circuits; monolithic VCO; multi-decade; variable-frequency oscillator; wideband operation; Demodulation; Flip-flops; Frequency control; Phase locked loops; Phase modulation; Switches; Trigger circuits; Virtual colonoscopy; Voltage; Voltage-controlled oscillators;
Conference_Titel :
Solid-State Circuits Conference, 1990. Digest of Technical Papers. 37th ISSCC., 1990 IEEE International
Conference_Location :
San Francisco, CA, USA
DOI :
10.1109/ISSCC.1990.110151
