Beamforming devices and methods

摘要

Devices and methods are provided for directionally receiving and/or transmitting acoustic waves and/or radio waves for use in applications such as wireless communications systems and/or radar. High directional gain and spatial selectivity are achieved while employing an array of receiving antennas that is small as measured in units of the wavelength of radio waves being received or transmitted, especially in the case of spatially oversampled arrays. Frequency/wavenumber, multi-dimensional spectrum analysis, as well as one-dimensional frequency spectrum analysis can be performed.

主权项

1. A system for coupling to an array of N antennas for receiving N signals, where N is a natural number greater than or equal to three, for receiving signals from a transmitting device, the device comprising:
circuitry for deriving digital data from the N antennas; a spatial filter for receiving digital data from the sampling circuitry; a spatial interpolator for receiving signals derived from the spatial filter and providing M interpolated signals using a Hermetic transform, where M>N, M representing a set of beams; and a selector for selecting one of the beams to identify a location of the transmitting device.