Title :
W-band dual channel PM/AM noise measurement system
Author :
Hati, A. ; Nelson, C.W. ; Nava, F.G. ; Howe, D.A. ; Walls, F.L.
Author_Institution :
Nat. Inst. of Stand. & Technol., Boulder, CO, USA
Abstract :
We discuss the performance of a W-band (92-96 GHz) PM and AM noise measurement system. The system uses two nearly identical channels to measure the AM or PM noise added by an amplifier or any passive component. It is designed principally to measure amplifiers in pulsed mode with a duty cycle of 5% to 100% (CW) at a given pulse repetition frequency. The system is calibrated by use of a single-sideband (SSB) modulator. We describe the details of the dual-channel measurement test set and several design considerations that are essential for accurately extracting device noise from measurement-system noise. Data are presented for the noise of the reference oscillator as well as for the measurement system´s noise floor.
Keywords :
calibration; circuit noise; electric noise measurement; millimetre wave amplifiers; millimetre wave measurement; 92 to 96 GHz; PM/AM noise measurement; W-band noise measurement; calibration; dual channel noise measurement system; measurement system noise floor; pulsed mode amplifier noise; reference oscillator noise; single-sideband modulator; Amplitude modulation; Frequency measurement; Gunn devices; Low-noise amplifiers; Noise measurement; Oscillators; Phase noise; Pulse amplifiers; Pulse measurements; Testing;
Conference_Titel :
Frequency Control Symposium and Exposition, 2004. Proceedings of the 2004 IEEE International
Print_ISBN :
0-7803-8414-8
DOI :
10.1109/FREQ.2004.1418468
