# Experimental demonstration of a rapid sweep-tuned spectrum analyzer with temporal resolution based on a spin-torque nano-oscillator

Abstract : It is demonstrated experimentally that a spin-torque nano-oscillator (STNO) rapidly sweep-tuned by a bias voltage can be used for time-resolved spectrum analysis of frequency-manipulated microwave signals with complicated multi-tone spectra. The critical reduction in the time of spectrum analysis comes from the naturally small time constants of a nano-sized STNO (1-100 ns). The demonstration is performed on a vortex-state STNO generating in a frequency range around 300 MHz, with frequency down-conversion and matched filtering used for signal processing. It is shown that this STNO-based spectrum analyzer can perform analysis of multi-tone signals, and signals with rapidly changing frequency components with time resolution on a $\mu$s time scale and frequency resolution limited only by the 'bandwidth' theorem. The proposed concept of rapid time-resolved spectrum analysis can be implemented with any type of micro and nano-scale frequency-swept oscillators having low time constants and high oscillation frequency.
Document type :
Preprints, Working Papers, ...

https://hal.archives-ouvertes.fr/hal-02539709
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Submitted on : Friday, April 10, 2020 - 12:09:29 PM
Last modification on : Sunday, June 26, 2022 - 12:31:42 AM

### Identifiers

• HAL Id : hal-02539709, version 1
• ARXIV : 2004.03508

### Citation

A. Litvinenko, V. Iurchuk, P. Sethi, S. Louis, V. Tiberkevich, et al.. Experimental demonstration of a rapid sweep-tuned spectrum analyzer with temporal resolution based on a spin-torque nano-oscillator. 2020. ⟨hal-02539709⟩

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