Noise properties of a resonance-type spin-torque microwave detector
نویسندگان
چکیده
We analyze performance of a resonance-type spin-torque microwave detector (STMD) in the presence of noise and reveal two distinct regimes of STMD operation. In the first (high-frequency) regime the minimum detectable microwave power Pmin is limited by the low-frequency JohnsonNyquist noise and the signal-to-noise ratio (SNR) of STMD is proportional to the input microwave power PRF. In the second (low-frequency) regime Pmin is limited by the magnetic noise, and the SNR is proportional to √ PRF. The developed formalism can be used for the optimization of the practical noise-handling parameters of a STMD.
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