Transmitting wideband signals through an electrically small antenna using antenna modulation
AssigneeVirginia Tech Intellectual Properties, Inc.
InventorMajid Manteghi
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Abstract
The present invention provides methods and devices to radiate wideband signals. The devices may include a tunable high Q narrowband antenna having a plurality of ports including a feed port and a tuning port as well as a tuning element coupled to the tuning port of the antenna. One or more voltage sources supply energy for radiating a radio frequency signal. A modulating signal generator may also be provided for generating a high data rate signal coupled at the tuning element for modulating the tuning element.
Claims20
An electrically small device configured to radiate wideband signals, comprising:
- a tunable high Q narrowband antenna having a plurality of ports including a feed port and a tuning port;
- a tuning element coupled to the tuning port of said antenna;
- a voltage source supplying energy to said antenna for radiating a radio frequency signal;
- a modulating signal generator for generating a high data rate signal coupled at the tuning element for modulating the tuning element;
- said tuning element comprises a plurality of capacitors coupled to the tuning port of said antenna with a plurality of switches;
- and
- said plurality of switches alternately couple said voltage source to the plurality of capacitors and said plurality of switches couple said plurality of capacitors to the tuning port of said antenna with a modulating signal generator controlling the plurality of switches according to a high data rate signal for modulating the tuning element while supplying energy to said antenna for radiating the radio frequency signal.
An electrically small device configured to radiate wideband signals, comprising:
- a tunable high Q narrowband antenna having a plurality of ports including a feed port and a tuning port;
- a tuning element coupled to the tuning port of said antenna;
- a voltage source supplying energy to said antenna for radiating a radio frequency signal;
- a modulating signal generator for generating a high data rate signal coupled at the tuning element for modulating the tuning element;
- said voltage source comprises a variable radio frequency source for supplying energy to said antenna;
- and
- said modulating signal generator further controls the variable radio frequency source according to a high data rate signal for modulating the energy to said antenna for radiating the radio frequency signal.
An electrically small device configured to radiate wideband signals, comprising:
- a tunable high Q narrowband antenna having a plurality of ports including a feed port and a tuning port;
- a tuning element coupled to the tuning port of said antenna;
- a voltage source supplying energy to said antenna for radiating a radio frequency signal;
- a modulating signal generator for generating a high data rate signal coupled at the tuning element for modulating the tuning element;
- said voltage source comprises a variable radio frequency source for supplying energy to said antenna;
- and
- said one of the plurality of ports of said antenna is further coupled a variable radio frequency source to further control the variable radio frequency source supplying energy to said antenna for radiating the radio frequency signal.
A method of radiating wideband high data rate radio frequency signals, comprising:
- providing a tunable high Q narrowband antenna with a plurality of ports including a feed port and a tuning port;
- coupling a tuning element to the tuning port of said antenna;
- supplying a voltage source for radiating radio frequency signal energy from said antenna;
- generating a high data rate signal coupled at the tuning element for modulating the tuning element with a modulating signal generator;
- providing the tuning element with a plurality of capacitors coupled to the tuning port of said antenna with a plurality of switches;
- and
- said plurality of switches alternately couple the voltage source to the plurality of capacitors and said plurality of switches couple the plurality of capacitors to the tuning port of said antenna with the modulating signal generator controlling the plurality of switches according to the high data rate signal for modulating the tuning element while supplying energy to said antenna for radiating the radio frequency signal.
Dependencies are inferred from the claim text.