Patent ID: 8624780

Claim:
A method comprising: receiving a signal transmitted from a source at a first antenna; receiving the signal at a second antenna which is located at a different location than the first antenna and disposed at a preselected distance from the first antenna; calculating a phase difference between the signal received at the first antenna and the signal received at the second antenna; determining a candidate angle of arrival for the signal from the calculated phase difference by selecting the candidate angle from a set of stored angles of arrival with corresponding phase difference values based on the calculated phase difference; using the candidate angle of arrival to determine a first angle (α) and a second angle (−α) as possible direction of the source of the signal; steering a directional antenna towards a first direction as the source of the signal based on one of the first angle (α) or the second angle (−α); receiving the signal at the directional antenna; determining a parameter of the received signal at the directional antenna and when the parameter of the received signal at the directional antenna is of sufficient value for receiving the signal, using the first direction as the direction of the source, and when the parameter of the received signal at the directional antenna is not of sufficient value for receiving the signal, steering the directional antenna towards a second direction as the source of the signal based on other of the first angle (α) or the second angle (−α); and communicating further with the source with the directional antenna oriented to the source.