AM-AM and AM-PM Measurements Using a PM Null Technique
01 January 1987
This paper describes a new method for measuring AM-AM and AM-PM nonlinearities in microwave radio components. This new method is called the PM Null Technique. This method is accurate and is easy to implement. Both the carrier and modulation frequencies can be changed easily. Results of AM-AM and AM-PM measurements performed on a 8 GHz amplifier are given. This new method is compared with Moffat's Parabolic Method and found to be in good agreement.