Some Practical Aspects of Integrated 2.4 GHz Quadrature VCO Design

Abstract

The paper describes real, successive steps of the design of fully integrated QVCO for 2.4 GHz. First version of the design, correct in simulation, does not fulfil the requirements when it was measured. The detailed reasons of changes introduced in the design are presented. Comparison of measured tuning characteristic with simulated one proves the validity of design steps.