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

fYear

2011

fDate

12-16 Sept. 2011

Firstpage

785

Lastpage

786

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 P_min 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 P_RF. In the second (low-frequency) mode P_min is limited by the magnetic noise, and the SNR is proportional to P_RF^1/2. 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Telecommunication Technology (CriMiCo), 2011 21th International Crimean Conference

Conference_Location

Sevastopol

Print_ISBN

978-1-4577-0883-1

Type

conf

Filename

6069150