Nordic Semiconductor has been granted a patent for a radio system that includes a transmitter and receiver. The system processes a continuous-wave radio-frequency signal to generate frequency-offset and DC-offset data, enhancing signal reception accuracy through a method involving mixing and processing signals. GlobalData’s report on Nordic Semiconductor 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 Nordic Semiconductor, M2M communication interfaces was a key innovation area identified from patents. Nordic Semiconductor's grant share as of June 2024 was 32%. Grant share is based on the ratio of number of grants to total number of patents.
Radio-frequency reception method with frequency and dc offset estimation
The granted patent US12047105B2 outlines a radio-frequency reception method and apparatus designed to enhance the processing of continuous-wave radio-frequency signals. The method involves receiving a radio-frequency signal at a first frequency and generating a periodic signal at a second frequency, which is offset from the first. By mixing these signals, a down-mixed signal is produced, from which frequency-offset data is derived. This data provides an estimate of the frequency offset and is further processed to generate DC-offset data, representing the DC offset component of the down-mixed signal. The method allows for the reduction or removal of this DC offset, improving signal clarity and accuracy.
Additionally, the patent describes a radio receiver apparatus that includes components such as a local oscillator, mixer, and processor to facilitate the described method. The apparatus is capable of generating phase-difference data, which can be utilized to determine the distance between the transmitter and receiver. The frequency offset is specified to be within the range of 5 kHz to 100 kHz, with particular emphasis on a predetermined intermediate-frequency component around 10 kHz. The system is designed to operate efficiently, processing at most one cycle period of the down-mixed signal to generate the necessary data, thereby optimizing performance in radio communication applications.
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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.
