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US 7,106,270 B2Granted
Array antenna capable of controlling antenna characteristic
AssigneeAdvanced Telecommunications Research Institute International
InventorsKyoichi Iigusa, Takuma Sawaya, Takashi Ohira, Hiroki Tanaka
Life of this patent
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Abstract
An array antenna includes a feeder element, a parasitic element implemented by a slot line, a variable capacitance element, and a directivity switching unit. The variable capacitance element is loaded in the slot line. The directivity switching unit supplies a control voltage to the variable capacitance element in order to vary the capacitance, and switches directivity of the array antenna.
Claims20
An array antenna allowing electrical switching of directivity, comprising:
- a feeder element;
- a parasitic element having a variable capacitance element loaded, and implemented by a slot line;
- and
- a directivity switching unit varying a capacitance of said variable capacitance element and switching said directivity.
1 more element
Dependencies are inferred from the claim text.