Title :
A study of noise phenomena in microwave components using an advanced noise measurement system
Author :
Ivanov, Eugene N. ; Tobar, Michael E. ; Woode, R.A.
Author_Institution :
Dept. of Phys., Western Australia Univ., Nedlands, WA, Australia
Abstract :
A novel 9 GHz measurement system with thermal noise limited sensitivity has been developed for studying the fluctuations in passive microwave components. The noise floor of the measurement system is flat at offset frequencies above 1 kHz and equal to -193 dBc/Hz. The developed system is capable of measuring the noise in the quietest microwave components in real time. We discuss the results of phase and amplitude noise measurements in precision voltage controlled phase shifters and attenuators. The first reliable experimental evidences regarding the intrinsic flicker phase noise in microwave isolators are also presented.
Keywords :
attenuators; electric noise measurement; flicker noise; microwave isolators; microwave measurement; microwave phase shifters; phase noise; 9 GHz; amplitude noise; flicker phase noise; fluctuations; microwave isolator; noise measurement; passive microwave component; voltage controlled attenuator; voltage controlled phase shifter; 1f noise; Attenuators; Frequency measurement; Microwave measurements; Noise measurement; Phase noise; Phase shifters; Real time systems; Voltage control; Voltage fluctuations;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
