The European Space Agency has filed a patent for a method involving fast Fourier transform (FFT) processing to transform input signals into output signals. The innovation includes non-uniform distribution of input and output signal ports, benefiting beamforming networks and antenna array devices. GlobalData’s report on European Space Agency 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 European Space Agency, Beamforming networks was a key innovation area identified from patents. European Space Agency's grant share as of January 2024 was 69%. Grant share is based on the ratio of number of grants to total number of patents.

Method for transforming input signals to output signals using fft

Source: United States Patent and Trademark Office (USPTO). Credit: European Space Agency SA

A patent application (Publication Number: US20240007161A1) describes a method for transforming multiple input signals received at N input ports into output signals at M output ports using a Fast Fourier Transform (FFT). The method involves generating intermediate signals, applying the FFT, and generating output signals. The input and output ports are non-uniformly distributed in signal domains, with weight factors applied based on window functions to reduce signal distortion. The method is applicable to beamforming networks for array antennas in both receive and transmit modes, with input signals from antenna elements and output signals for beam signals or antenna elements.

The patent application also details a beamforming network implementing the method, with preprocessor and postprocessor modules for signal routing, scaling, and summing. The network includes input and output signal ports, an FFT module, and weight factor determination based on window functions. The network can be used in wideband and narrowband multibeam antenna array devices, with connections to signal conditioning chains for signal processing. Additionally, a FFT processor is described, with reconfigurable weight factors based on the oversizing of the FFT and the distribution of input and output ports. The application also covers a computer program stored on a non-transitory medium for executing the method.

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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.