High frequency voltage controlled oscillator

摘要

A voltage controlled oscillator (VCO) and method for generating voltage controlled oscillating signals utilizes a plurality of timing blocks that form a circular signal path to provide delays to control the frequencies of the signals. The VCO is suitable for applications at frequencies of 3 GHz and higher, and has low voltage and power requirements. The delays provided by the timing blocks are determined by the operating properties of differential transistors, timing capacitors and current sources, which are included in the timing blocks.