Antenna diversity control for beamforming in an antenna array

• US 8,891,589 B2
• Filed: 04/22/2013
• Issued: 11/18/2014
• Est. Priority Date: 08/07/2009
• Status: Active Grant

• Current Assignee: The Renda Trust
• Original Assignee: The Renda Trust
• Inventors: Wang, James June-Ming, Marringa, Menno
• Primary Examiner(s): PANWALKAR, VINEETA S
• Application Number:
  US13/867,645
• Publication Number:
  US 20130294491A1
• Time in Patent Office: 575 Days
• Field of Search: 375140-152, 375/242, 375/243, 375/354, 375/362, 375/367, 375/267, 375/299, 375/295, 375/316, 375/259, 455/130, 455/150.1, 455/196.1, 455/193.1, 341/126, 341/155, 341/172
• US Class Current: 375/141
• CPC Class Codes: H04B 1/7075 with code phase acquisition
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/086 using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
• CPC Class Codes: H04B 7/0897 using beamforming per multi-path, e.g. to cope with different directions of arrival [DOA] at different multi-paths
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Techniques for controlling diversity beamforming antenna array is disclosed. One aspect of the techniques is to utilize low-power and low area circuits to achieve combining gains, mitigate the effects of multipath fading, provide spatial suppression and diversity gains to a single input receiver. The device is radiofrequency transparent yet provides antenna gain by selective three G and four G code acquisition and tracking of a desired downlink channel.

Claims

1. A method for controlling an array of antennas, the method comprising:

receiving signals from a plurality of antenna elements in an adaptive array antenna;

determining a digital amplitude and a phase for each of the signals;

spreading signals out by multiplying parameters in accordance with a tracking circuit output,

determining a scale factor and a pair of values for each of the antenna elements;

determining a reference signal;

determining a phase angle correction between the reference signal and each of the signals,

modulating each of the signals by a set of normalized weights, and

combining the modulated signals from all antenna elements as an input to a single input receiver,

wherein the pair of values includes a phase shift for each of the signals.