Patent ID: 9581677
Date: 2017-02-28
CPC Classifications: G01S,H01P,H01Q

Claim:
1. A method for determining the direction of arrival of a radio signal, the method comprising the steps of: receiving, by an electronic circuit, at least two input signals from at least two separated antennas, each input signal characterizing the radio signal having a radio frequency (RF); converting, by the electronic circuit, the at least two input signals into at least three output signals, wherein the at least three output signals have a unique combination of corresponding magnitudes for each RF phase difference between the at least two input signals; measuring, by a measuring device, a set of magnitudes corresponding to the at least three output signals; determining, by a processor, an RF phase angle value based on the measured set of magnitudes; and converting, by the processor, the RF phase angle value into an angle value indicative of the direction of arrival of the radio signal, wherein the electronic circuit comprises