NXP Semiconductors has been granted a patent for a digital front-end circuit designed for radio frequency transmission. The circuit features a digital predistortion block that utilizes a nonlinear model and mixing module to process input signals, enhancing signal quality before amplification and transmission. GlobalData’s report on NXP Semiconductors gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on NXP Semiconductors, Quantum dot devices was a key innovation area identified from patents. NXP Semiconductors's grant share as of June 2024 was 64%. Grant share is based on the ratio of number of grants to total number of patents.
Digital predistortion for radio frequency transmission systems
The granted patent US12047100B2 describes a digital front-end circuit designed for radio frequency (RF) transmission, specifically focusing on digital predistortion (DPD) techniques. The circuit comprises a DPD block and a power amplifier (PA), with the DPD block receiving an input signal and generating an output signal through a series of processing modules. Central to the DPD block is a nonlinear model that produces a nonlinear model output signal based on the input signal. This model is integrated with a mixing module that utilizes finite impulse response (FIR) filters and multiplication blocks to create a mixing module output signal. The output signal is then generated by summing the nonlinear model output and the mixing module output, enhancing the overall performance of the RF transmission.
The patent further details the architecture of the DPD block, including multiple FIR filters and multiplication blocks that facilitate complex signal processing. It specifies configurations for both the first and second mixing modules, which work in tandem to refine the output signal. The DPD block can employ various nonlinear models, including Generalized Memory Polynomials (GMP) and other non-GMP models, to optimize performance. Additionally, the entire system can be implemented on a single integrated circuit, enhancing efficiency and compactness. The patent also outlines a method for digital predistortion, detailing the steps involved in processing the input signal to achieve the desired output for the power amplifier, thereby improving the fidelity of RF transmission.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
