Title :
W-band dual channel AM/PM noise measurement system - an update
Author :
Hati, A. ; Nelson, C.W. ; Nava, J. F Garcia ; Howe, D.A. ; Walls, F.L. ; Ascarrunz, H. ; Lanfranchi, J. ; Riddle, B.
Author_Institution :
National Inst. of Stand. & Technol., Boulder, CO
Abstract :
We discuss the performance of a W-band (92-96) GHz amplitude modulated (AM) and phase modulated (PM) noise measurement system. The system uses two nearly identical channels to measure the residual noise in amplifiers in pulsed mode with a duty cycle of 10 % to 100 % (CW) at a given pulse repetition frequency (PRF). We describe details of the dual-channel measurement test set system and several design considerations that are essential for accurately extracting the device noise from measurement-system noise. We also discuss the modifications made to the synthesis scheme of the (92-96) GHz signal compared to the previous scheme. Finally, we present updated results for the source noise and the noise floor of the measurement system
Keywords :
electric noise measurement; millimetre wave measurement; 92 to 96 GHz; AM/PM noise measurement; W-band noise measurement; amplitude modulated noise measurement; dual channel noise measurement; phase modulated noise measurement; pulse repetition frequency; Digital systems; Frequency measurement; Noise measurement; Oscillators; Phase modulation; Phase shifters; Pulse amplifiers; Pulse measurements; Radar antennas; Switches;
Conference_Titel :
Frequency Control Symposium and Exposition, 2005. Proceedings of the 2005 IEEE International
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-9053-9
DOI :
10.1109/FREQ.2005.1573982
