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US 2025/0096473 A1Published application
Antenna System with Quality-Factor Modulation
AssigneeWiscosin Alumni Research Foundation
InventorsDaniel Ludois, Nader Behdad, Marisa Liben, Mirhamed Mirmozafari
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Abstract
An electrically small antenna system modulates the Q factor of the antenna during electrical transmission to decrease the Q factor during signal transitions between frequency states thereby affecting an improved trade-off between antenna bandwidth and operating efficiency.
Claims15
An electrically small antenna system for use with a digitally modulated radio, the system comprising:
- an antenna output adapted to connect to and control a current through an antenna radiator;
- a radio signal input receiving a radiofrequency signal being a function of an encoding signal defining a series of digital symbols transmitted at symbol times separated at transition times;
- and
- an antenna driver circuit operating to apply power to a connected antenna radiator during symbol times and to dissipate power from the antenna radiator during transition times by changing an effective resistance in a path through the antenna radiator to lower the electrical Q of the connected antenna driver circuit and antenna radiator.
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Dependencies are inferred from the claim text.