Oscillator with biased cross-coupled transistors, a current source, a tail resistor and a tail capacitor
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United States of America
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Jan 14, 2025
Grant Date -
Jun 29, 2023
app pub date -
Jun 4, 2020
filing date -
Jun 4, 2020
priority date (Note) -
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Abstract
Embodiments disclosed herein relate to oscillators including methods of operating the same, for example for use in radio frequency circuits. In an embodiment, an oscillator has cross-coupled transistors connected between a resonant circuit and a tail circuit. The resonant circuit and tail circuit have respective supply connections for powering the oscillator with an external power supply and the cross-coupled transistors have a bias circuit coupled to respective gates of the cross-coupled transistors and arranged to bias said transistors in an active region of operation. The tail circuit has a current source, a tail capacitor and a tail resistor coupled between a common node of the cross-coupled transistors and the supply connection of the tail circuit.
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