Method and system for switched combined diversity with a modal antenna

摘要

A system and method for diversity implementation are provided, where diversity gains are obtained by using a hybrid of the switching technique and the combining technique in conjunction with the use of a modal antenna. The antenna system includes multiple antennas including at least one modal antenna that has multiple modes, and a processor for selecting one or more modes from the multiple modes associated with each of the at least one modal antenna, combining modes to form one or more combinations of modes, the modes in each of the one or more combinations including one of the one or more selected modes associated with each of the at least one modal antenna, and selecting one of the one or more combinations that optimizes correlation and/or a quality metric for diversity.

主权项

1. An antenna system, comprising:
a plurality of antennas including at least one modal antenna comprising an antenna element positioned above a circuit board forming an antenna volume therebetween, a first parasitic element positioned outside said antenna volume and adjacent to the antenna element and being coupled to a first active tuning component, and a second parasitic element positioned within the antenna volume and coupled to a second active tuning component, said modal antenna being configured for band switching and beam steering using a single antenna element, wherein each of the at least one modal antenna is configured to have a plurality of modes associated therewith; and a processor coupled to the plurality of antennas and configured to select one or more modes from the plurality of modes associated with each of the at least one modal antenna to have one or more selected modes associated with each of the at least one modal antenna, to combine modes to form one or more combinations of modes, wherein the modes in each of the one or more combinations are associated respectively with the plurality of antennas and comprise one of the one or more selected modes associated with each of the at least one modal antenna, and to select one of the one or more combinations that optimizes one or both of correlation and a quality metric for diversity.