ACTIVE MIMO ANTENNA CONFIGURATION FOR MAXIMIZING THROUGHPUT IN MOBILE DEVICES

摘要

An active antenna system and algorithm is proposed that provides for dynamic tuning and optimization of antenna system parameters for a MIMO system that will provide for greater throughput. As one or multiple antennas are loaded or de-tuned due to environmental changes, corrections to correlation and/or isolation are made by tuning the active antenna. A null-steering technique is implemented to alter the near-field and far-field characteristics to aid in modifying correlation and isolation in the multi-antenna system.

主权项

1. An active MIMO antenna system, comprising:
a first modal antenna adapted for selective operation about a plurality of first modes thereof, wherein the first modal antenna is adapted to provide a distinct antenna radiation pattern in each of said plurality of first modes; a first RF switch coupled to the first modal antenna, wherein the first RF switch is adapted to configure the first modal antenna in one of the plurality of first modes; a second modal antenna adapted for selective operation about a plurality of second modes thereof, wherein the second modal antenna is adapted to provide a distinct antenna radiation pattern in each of said plurality of second modes; a second RF switch coupled to the second modal antenna, wherein the second RF switch is adapted to configure the second modal antenna in one of the plurality of second modes; a first processor coupled to each of the first and second RF switches, the first processor including memory and an algorithm for sampling signal information, selecting a preferred configuration for each of the first and second modal antennas based on the signal information, and communicating control signals to the first and second RF switches for implementing the preferred configuration; and a baseband processor coupled to each of the first and second transceivers for communicating radiofrequency (RF) signals therebetween, the baseband processor being further coupled to the first processor for communicating said signal information.