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US 2021/0242659 A1Published application
Resonant laser driver
AssigneeAnalog Devices International Unlimited Company
InventorsJiannan Huang, Frank M. Yaul, Jonathan Ephraim David Hurwitz, Nicolas Le Dortz, Junhua Shen
Life of this patent
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Abstract
A laser emitter circuit comprises a laser diode; a driver circuit configured to generate a drive signal; and a resonant circuit coupled to the driver circuit and the laser diode, wherein the resonant circuit is configured to use the drive signal of the driver circuit to generate a continuous wave sinusoidal drive signal to drive the laser diode.
Claims22
A laser emitter circuit comprising:
- a laser diode;
- a driver circuit configured to generate a drive signal;
- and
- a resonant circuit coupled to the driver circuit and the laser diode, wherein the resonant circuit is configured to use the drive signal of the driver circuit to generate a continuous wave sinusoidal drive signal to drive the laser diode.
1 more element
A laser diode drive circuit comprising:
- a driver circuit configured to generate drive signal;
- a resonant circuit having an input coupled to an output of the driver circuit and having an output for coupling to a laser diode, wherein the resonant circuit is configured to produce a continuous wave sinusoidal drive signal from the drive signal to drive the laser diode;
- and
- a bias circuit including a bias inductance for coupling to the laser diode.
1 more element
A method of operating a laser emitter of a time of flight sensor, the method comprising:
- generating a drive signal using a driver circuit;
- producing, using a resonant circuit, a continuous wave sinusoidal drive signal from the square wave drive signal;
- and
- driving the laser diode using the continuous wave sinusoidal drive signal.
1 more element
Dependencies are inferred from the claim text.