OscillatorADS Application Notes Microwave Laboratory, Department of Electronic Engineering The Chinese University of Hong Kong The Design of 2.4GHz Bipolar Oscillator by Using the Method of Negative Resistance Cheng Sin Hang Tony Sept. 14, 2001 Introduction In this application note, the design on a 2.4GHz bipolar oscillator by the method of negative resistance will be used. In the design, a circuit simulator Advanced Design System (ADS) from Agilent Technologies will be used and it will be used to evaluate the performance of the designed oscillator at the end of the design. Theory In the negative resistance oscillator design, the negative resistors can be realized easily by a three terminals active device with proper feedback. This negative resistor is used to cancel out the lost from the resonat……