Low-loss switchable panel antennas
AssigneeRuckus IP Holdings LLC
InventorJames W. Jervis
Life of this patent
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Abstract
A switchable antenna comprises an RF port, an antenna array that includes at least a first column of radiating elements, a second column of radiating elements and a third column of radiating elements, and a feed network coupled between the RF port and the antenna array. The feed network includes a first switch having a first output that is coupled to each of the columns of radiating elements and a second output and a second switch having a first input coupled to the first output of the first switch and a second input coupled to the second output of the first switch, and a first output coupled to the second column of radiating elements.
Claims19
A switchable antenna, comprising:
- a radio frequency (“RF”) port;
- an antenna array that includes at least a first column of radiating elements, a second column of radiating elements and a third column of radiating elements;
- and
- a feed network coupled between the RF port and the antenna array, the feed network comprising:
- a first switch having a first output that is coupled to each of the columns of radiating elements and a second output;
- and
- a second switch having a first input coupled to the first output of the first switch and a second input coupled to the second output of the first switch, and a first output coupled to the second column of radiating elements.
A switchable antenna that is switchable between a high gain mode and a lower gain mode, comprising:
- a radio frequency (“RF”) input port;
- an antenna array that includes at least a first column of radiating elements, a second column of radiating elements and a third column of radiating elements;
- a first switch having an input coupled to the RF input port;
- and
- a second switch having an output coupled to the second column of radiating elements,
- wherein the second column of radiating elements is coupled to the RF input port via a greater number of switches than the first and third columns of radiating elements,
- wherein a power divider is interposed between a first output of the first switch and the second switch.
A switchable antenna that is switchable between a high gain mode and a lower gain mode, comprising:
- a radio frequency (“RF”) input port;
- an antenna array that includes at least a first column of radiating elements, a second column of radiating elements and a third column of radiating elements;
- and
- a feed network that includes a plurality of switches, where the feed network experiences a first amount of switching loss when the antenna is configured to operate in the high gain mode and a second amount of switching loss when the antenna is configured to operate in the lower gain mode, where the second loss exceeds the first loss, and
- wherein in the higher gain mode, the antenna array provides a first gain, and in the lower gain mode, the antenna array provides a second gain that is less than the first gain.
Dependencies are inferred from the claim text.