Bandswitched electrically short tactical monopole antenna system

摘要

A bandwidth-enhanced antenna system for operating on one of a plurality of selected frequency bands includes a whip or wire antenna element having band selection wires and a contiguous set of inductors arranged in series, each of the inductors being sufficiently separated from one another and being arranged such that the resonant frequency of any of said inductors is greater than the highest operating frequency of the plurality of frequency bands. Selector means is included provide a band select signal, and a plurality of switches each having a first terminal connected to a corresponding one of the inductors and a second terminal connected to the feed-end of the antenna element. The switches are responsive to the bandwidth select signal to allow communication using a selected one of the plurality of the frequency bands. An impedance matching network may be used for coupling an external receiver or transmitter to the feed-end of the antenna element.