Lizhong Sun, Tad A. Kwasniewski, Kris Iniewski. A quadrature output voltage controlled ring oscillator based on three-stage sub-feedback loops. In International Symposium on Circuits and Systems (ISCAS 1999), May 30 - June 2, 1999, Orlando, Florida, USA. pages 176-179, IEEE, 1999. [doi]
Abstract is missing.