Shenzhen Goodix Technology Co., Ltd.

Ayman Mohamed Elsayed

Ahmed Emira

Mohamed Aboudina

Faisal Hussien

Janakan Sivasubramaniam

Rami H Khatib

Amr Abuellil

Jared M Gagne

A communication circuit is disclosed. The communication circuit includes a calibration system, configured to receive clock signals respectively having first and second clock phases, and first and second duty cycles, where the calibration system is further configured to receive input data and to adjust the input data to generate adjusted data based partly on the input data and based partly on the first and second duty cycles. The communication circuit also includes a mixer, configured to receive the clock signals and to receive the adjusted data, where the mixer is configured to generate output data based on the clock signals and the adjusted data, and where a mismatch in the output data caused by the first and second duty cycles being different is reduced because of the adjustment made to the input data to generate the adjusted data.

IQ clock phase calibration

A radio frequency (RF) receiver circuit is disclosed. The RF receiver circuit includes a variable gain amplifier, configured to receive an input RF signal, and to generate an amplified RF signal based on the input RF signal, where a gain of the variable gain amplifier is variable. The RF receiver circuit also includes an RF level indicator circuit, configured to sample the amplified RF signal at non-periodic sampling intervals to generate a plurality of sampled RF signals, and to compare the sampled RF signals with one or more thresholds to generate a plurality of comparison result signals. The gain of the variable gain amplifier is determined based at least in part on the comparison result signals.

Radio frequency level indicator

A transceiver includes a receive path including a low noise amplifier and a first switch coupled between the low noise amplifier and ground, a first transmit path including a low power amplifier and a second switch coupled between the low power amplifier and a main signal path, and a second transmit path including a high power amplifier and a third switch coupled between the main signal path and ground. The receive path is active when the first, second, and third switches are in an open position, the first transmit path is active when the first switch is in a closed position, the second switch is in the closed position, and the third switch is in the open position, and the second transmit path is active when the first switch and the third switch are in the closed position, and the second switch is in the open position.

Multi-mode configurable transceiver with low voltage switches

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San Diego, CA, United States of America

Ayman Mohamed Elsayed