A Comprehensive Analysis of Quadrature Signal Synthesis in Cross-Coupled RF VCOs. - Ibrahim R. Chamas; Sanjay Raman (IEEE Trans. Circuits Syst. I Regul. Pap., 2007)

Analysis and Design of a CMOS Phase-Tunable Injection-Coupled LC Quadrature VCO (PTIC-QVCO). - Ibrahim R. Chamas; Sanjay Raman (IEEE J. Solid State Circuits, 2009)