Multi-band antenna system
AssigneeMachine Applications Corp.
InventorJames Weit
Life of this patent
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Abstract
A radio antenna having radiating conductors (28,30,32) which can be connected together by the action of antenna switch modules (20,22,24), whereby the electrical length of said antenna can be changed. Power and control signals to said antenna switch modules, are conducted from the antenna controller (18) through the feed line (14), and said radiating conductors. The radiating direction of said antenna can be changed by a directional switch module (74), which receives power and control signals through said feed line from a directional control circuit (29). Thus said antenna can be tuned for a plurality of frequency bands, and the radiating direction can be changed, by remote control.
Claims5
A multi-band antenna system comprising:
- radiating conductors with a means of changing the length of said radiating conductors by the action of a plurality of switching elements arranged along the length of said radiating conductors, and a means of actuating said switching elements by remote control whereby the effective operating frequency band of said antenna can be changed.
Dependencies are inferred from the claim text.