Shenzhen Goodix Technology has filed a patent for a phase modulation and interpolation system for wireless transmitters. The system utilizes fractional dividers, delay lines, and digital controlled edge interpolators to achieve high phase modulation resolution and linearity. The technology allows for precise phase modulation of signals for transmission. GlobalData’s report on Shenzhen Goodix Technology gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Shenzhen Goodix Technology, AI-assisted biometric recognition was a key innovation area identified from patents. Shenzhen Goodix Technology's grant share as of January 2024 was 47%. Grant share is based on the ratio of number of grants to total number of patents.

High-resolution phase modulation and interpolation system for wireless transmitters

Source: United States Patent and Trademark Office (USPTO). Credit: Shenzhen Goodix Technology Co Ltd

The patent application (Publication Number: US20240039521A1) describes a phase modulation and interpolation system for a wireless transmitter. The system includes a fractional divider to generate N divided clock signals based on a local clock signal, a fractional delay-calibrated delay line to generate M delayed clock signals, and a digital controlled edge interpolator to generate an interpolated clock signal. The system allows for precise phase modulation of the transmitted signal by selecting specific divided and delayed clock signals based on a digital signal encoding the instantaneous phase.

Furthermore, the system includes components such as an output interface to couple with a power amplifier, a fractional divider with divide and multiply stages, and a feedback control loop in the FDC delay line for calibration. The DCEI unit cells in the digital controlled edge interpolator use a binary to thermometer decoder to generate the interpolated clock signal. The method described in the patent involves receiving a digital signal encoding the phase, dividing the local clock signal, generating delayed clock signals, and interpolating the phase to create the interpolated clock signal for modulation of the power amplifier output. Overall, the system and method aim to provide accurate phase modulation and interpolation for wireless transmission applications.

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