BEAMFORMING DEVICES AND METHODS
First Claim
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.
3 Assignments
0 Petitions
Accused Products
Abstract
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.
-
Citations
20 Claims
-
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; anda selector for selecting one of the beams to identify a location of the transmitting device. - View Dependent Claims (2, 3, 4, 5, 7)
-
-
6. 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 obtaining signals from the circuitry; a spatial interpolator for receiving signals derived from the digital data and providing M interpolated signals, where M>
N, M representing a set of beams;a selector for selecting one of the beams to identify a location of the transmitting device; and a second spatial filter for receiving output signals derived from the spatial interpolator, and a second spatial interpolator for receiving the filtered signals from the second spatial filter and providing P beams, where P>
M.
-
-
8. A method for receiving signals from a transmitting device, the receiving for use with an array of N antennas for receiving N signals, where N is a natural number greater than or equal to three, the method comprising:
-
sampling the signals to derive digital data from the N elements; spatial filtering for filtering sampled signals; spatially interpolating the N signals to provide M interpolated signals, where M>
N, M representing a set of beams; andselecting one of the beams to identify a location of the transmitting device. - View Dependent Claims (9, 11)
-
-
10. A method for receiving signals from a transmitting device, the receiving operable with an array of N antennas providing N signals, where N is a natural number greater than or equal to three, the method comprising:
-
sampling the signals to derive digital data from the N elements; spatial filtering for obtaining signals from a desired sector; spatially interpolating the N signals to provide M interpolated signals, where M>
N, M representing a set of beams;selecting one of the beams to identify a location of the transmitting device; and a second spatial filtering for receiving output signals derived from the spatial interpolating, and a second spatial interpolating for receiving the filtered signals from the second spatial filtering and providing P beams, where P>
M. - View Dependent Claims (12)
-
-
13. A system for receiving signals from a transmitting device, the system for use with an array of N antennas receiving N signals, where N is a natural number greater than or equal to three, the device comprising:
a processor configured to; sample data from the N antennas, and use a Hermetic transform on the sampled data to form M beams, where M>
N.- View Dependent Claims (14, 15, 20)
-
16. A method for receiving signals from a transmitting device using an array of N antennas, where N is a natural number greater than or equal to three, the method comprising:
-
sampling the signals from the N antennas to derive digital data from the N elements; and using a Hermetic transform on the sampled data to derive M beams, where M>
N. - View Dependent Claims (17, 18, 19)
-
Specification