Method and Device for Calibrating an Antenna
AssigneeComrod AS
InventorJo Morten Eide
Life of this patent
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Abstract
A method and device are for calibrating an antenna. At least one switch is spanning sections of a radiating antenna element. A controller is designed to selectively close the switch to be conductive, thus effectively short-circuiting the actual section of the antenna element. The method includes: installing the antenna for field use at least for transmission or reception of signals; then measuring the reflected power from the antenna at least for a number of frequencies or frequency ranges at more than one setting of the switch; and storing the settings that gives a desirable result of reflected power at an actual frequency or frequency range.
Claims15
A method for calibrating an antenna where at least one switch is spanning a section of a radiating antenna element, and where a controller is designed to selectively close the switch, thus effectively short-circuiting the actual section of the antenna element, the method comprising:
- installing the antenna for field use at least for transmission or reception of signals;
- then measuring the reflected power from the antenna at least for a number of frequencies or frequency ranges at more than one setting of the switch;
- and
- storing the settings that gives a desirable result of reflected power at an actual frequency or frequency range.
A device for calibrating an antenna, the device comprising at least one switch that spans sections of a radiating antenna element, a controller that selectively closes the switch, thus effectively short-circuiting the actual section of the antenna element, wherein a signal generator that supplies the antenna with radio frequency signals is connected to the controller, and a directional coupler that is connected to the controller and measures the reflected power from the antenna.
Dependencies are inferred from the claim text.