Title :
Noise properties of resonant spin-torque microwave detectors
Author :
Prokopenko, O.V. ; Tiberkevich, V.S. ; Slavin, A.N.
Author_Institution :
Taras Shevchenko Nat. Univ. of Kyiv, Kiev, Ukraine
Abstract :
The analysis of performance of a resonance-type spin-torque microwave detector (STMD) in the presence of noise has been carried out. It reveals the existence of two distinct modes of STMD operation. In the first (high-frequency) mode the minimum detectable microwave power Pmin is limited by the low-frequency Johnson-Nyquist noise and the signal-to-noise ratio (SNR) of STMD is proportional to the input microwave power PRF. In the second (low-frequency) mode Pmin is limited by the magnetic noise, and the SNR is proportional to PRF1/2. The developed formalism can be used for the optimization of the practical noise-handling parameters of a STMD.
Keywords :
microwave detectors; thermal noise; STMD operation; high-frequency mode; low-frequency Johnson-Nyquist noise; magnetic noise; microwave power; noise properties; noise-handling parameters; resonance-type spin-torque microwave detector; resonant spin-torque microwave detectors; signal-to-noise ratio; Detectors; Magnetic noise; Magnetic tunneling; Microwave measurements; Radio frequency; Signal to noise ratio;
Conference_Titel :
Microwave and Telecommunication Technology (CriMiCo), 2011 21th International Crimean Conference
Conference_Location :
Sevastopol
Print_ISBN :
978-1-4577-0883-1
