Wireless circuitry with self-calibrated harmonic rejection mixers

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11296802
APP PUB NO 20220094451A1
SERIAL NO

17031753

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Abstract

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An electronic device may include a harmonic rejection mixer with a delay line, mixer array, and load. The delay line may generate LO phases. Each mixer in the array may have a first input that receives an LO phase and a second input coupled to an input switch and the first input of the next mixer circuit through an inter-mixer switch. The load may include a set of switches. In a transmit mode, the input switches and set of switches may be closed while the inter-mixer switches are open. In a self-calibration mode, the input switches and set of switches may be open while the inter-mixer switches are closed. A controller may sweep through phase codes for the programmable delay line while storing a digital output from the load. The controller may calibrate the phase code based on the digital output.

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Patent Owner(s)

Patent OwnerAddress
APPLE INCONE APPLE PARK WAY CUPERTINO CA 95014

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Emami-Neyestanak, Sohrab San Francisco, US 30 376
Komijani, Abbas Mountain View, US 65 752
Lin, Saihua Santa Clara, US 45 212
Wang, Hongrui San Jose, US 42 50

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