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AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorPietro Andreani
Estimating the term…
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.
An oscillator having cross-coupled transistors connected between a resonant circuit and a tail circuit, the resonant circuit and tail circuit having respective supply connections for powering the oscillator with an external power supply, the cross-coupled transistors having 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 having 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, wherein the tail capacitor is connected in series with the tail resistor.
A method of operating an oscillator having cross-coupled transistors connected between a resonant circuit and a tail circuit having a current source, a tail capacitor and a tail resistor coupled to a common node of the cross-coupled transistors, wherein the tail capacitor is connected in series with the tail resistor, the method comprising:
Dependencies are inferred from the claim text.