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W-band dual channel AM/PM noise measurement system - an update



Archita Hati, Craig Nelson, J Nava, David A. Howe, Fred L. Walls, Huascar Ascarrunz, Justin Lanfranchi, Bill Riddle


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.
Proceedings Title
Proc. Joint Mtg. IEEE Intl. Freq. Cont. Symp. and PTTI Mtg.
Conference Location


amplitude modulated noise, GaAs multiplier, Gunn oscillator, InP amplifier, phase locked loop, phase modulated noise, w-band synthesizer


Hati, A. , Nelson, C. , Nava, J. , Howe, D. , Walls, F. , Ascarrunz, H. , Lanfranchi, J. and Riddle, B. (2005), W-band dual channel AM/PM noise measurement system - an update, Proc. Joint Mtg. IEEE Intl. Freq. Cont. Symp. and PTTI Mtg., , USA, [online], (Accessed July 17, 2024)


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Created August 28, 2005, Updated October 12, 2021