Invention Grant
US08823460B2 Magnetoresistive radiofrequency oscillator and method for generating an oscillating signal 有权
磁阻射频振荡器及产生振荡信号的方法

Magnetoresistive radiofrequency oscillator and method for generating an oscillating signal
Abstract:
The invention relates to a radiofrequency oscillator which incorporates: a spin-polarized electric current magnetoresistive device (6) for generating an oscillating signal at an oscillation frequency on an output terminal (10), and a terminal (18) for controlling the frequency or amplitude of the oscillating signal, and a feedback loop (44) comprising an amplifier (46) provided with: an input connected to the output terminal (10) of the magnetoresistive device (6) so as to amplify the portion of an oscillating signal detected at the output terminal, and an output connected to the control terminal (18) so as to inject onto said control terminal the amplified portion of the oscillating signal which is phase-related to the oscillating signal generated at the output terminal.
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