Tunable multiband multiport antennas and method

摘要

An antenna, comprising a plurality of feed points and tuning elements for tuning a resonant frequency at each feed point independently of the others of the plurality of feed points. The tuning elements are placed on the configured radiating element such that for a given feed point its tuning element is placed on the configured radiating element where a current distribution of the other feed points is a minimum.

主权项

1. An antenna, comprising:
a radiation element having at least one adjustable tuning element positioned on the radiation element, the radiation element configured to resonate at a fundamental frequency when excited at a first feed point; a second feed point positioned on the configured radiation element, the position of the second feed point located at a current distribution maxima of a harmonic of the fundamental frequency; and the at least one adjustable tuning element positioned on said radiation element at a location displaced along said radiation element from said first and second feed point locations so that adjustment of a value of said tuning element tunes a resonant frequency of the second feed point with no effect on the resonant frequency of the first feed point.