High-efficiency broadband antenna
First Claim
1. A crossed-field antenna system, comprising:
- an E-cylinder tuning circuit operably coupled to an E-cylinder;
a D-plate tuning circuit operably coupled to a D-plate;
a transmitter feed tuning circuit operably coupled to a transmitter, the E-cylinder tuning circuit, and the D-plate tuning circuit;
at least one signal sensor; and
a controller operably coupled to the transmitter feed tuning circuit, the E-cylinder tuning circuit, the D-plate tuning circuit, and the at least one signal sensor, the controller including at least one processor configured to;
determine a current ratio to provide approximately equal power to the E-cylinder and the D-plate;
set a reactance of the E-cylinder tuning circuit and a reactance of the D-plate tuning circuit based on the current ratio;
determine a combined impedance value based at least in part on the reactance of the E-cylinder tuning circuit and the reactance of the D-plate tuning circuit; and
set a reactance of the transmitter feed tuning circuit based on the combined impedance value.
1 Assignment
0 Petitions
Accused Products
Abstract
Techniques for tuning a crossed-field antenna are provided. An example of an antenna system includes a D-plate with a D-plate feed conductor, such that the D-plate is a horizontal conductor raised above and insulated from a ground plane, an E-cylinder with an E-cylinder feed conductor, such that the E-cylinder is a vertical hollow conductive cylinder of smaller diameter than the D-plate, which is mounted concentrically above and insulated from the D-plate, a transmitter tuning circuit configured to receive a signal from a transmitter, an E-cylinder tuning circuit operably coupled to the transmitter tuning circuit and the E-cylinder feed conductor, and a D-plate tuning circuit operably coupled to the transmitter tuning circuit and the D-plate feed conductor.
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Citations
18 Claims
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1. A crossed-field antenna system, comprising:
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an E-cylinder tuning circuit operably coupled to an E-cylinder; a D-plate tuning circuit operably coupled to a D-plate; a transmitter feed tuning circuit operably coupled to a transmitter, the E-cylinder tuning circuit, and the D-plate tuning circuit; at least one signal sensor; and a controller operably coupled to the transmitter feed tuning circuit, the E-cylinder tuning circuit, the D-plate tuning circuit, and the at least one signal sensor, the controller including at least one processor configured to; determine a current ratio to provide approximately equal power to the E-cylinder and the D-plate; set a reactance of the E-cylinder tuning circuit and a reactance of the D-plate tuning circuit based on the current ratio; determine a combined impedance value based at least in part on the reactance of the E-cylinder tuning circuit and the reactance of the D-plate tuning circuit; and set a reactance of the transmitter feed tuning circuit based on the combined impedance value. - View Dependent Claims (2, 3, 4, 5)
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6. A tuning system for coupling a transmitter means with an antenna means, the antenna means including an E-cylinder and a D-plate, the tuning system comprising:
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an E-cylinder tuning means operably coupled to the E-cylinder; a D-plate tuning means operably coupled to the D-plate; a transmitter feed tuning means operably coupled to the transmitter means, the E-cylinder tuning means, and the D-plate tuning means; and a controller means operably coupled to the transmitter feed tuning means, the E-cylinder tuning means, and the D-plate tuning means, the controller means being configured to; set an E-cylinder reactance and a D-plate reactance such that approximately equal power is provided to the E-cylinder and the D-plate; and set a transmitter feed reactance based at least in part on the E-cylinder reactance and the D-plate reactance. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A non-transitory processor-readable storage medium comprising processor-readable instructions configured to cause one or more processors to tune an antenna system including an E-cylinder and D-plate, wherein the E-cylinder and the D-plate are operably coupled to a tuning network including a transmitter feed tuning circuit, an E-cylinder tuning circuit, and a D-plate tuning circuit, comprising:
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code for determining a current ratio to provide approximately equal power to the E-cylinder and the D-plate; code for setting a reactance of the E-cylinder tuning circuit and a reactance of the D-plate tuning circuit based on the current ratio; code for determining a combined impedance value based at least in part on the reactance of the E-cylinder tuning circuit and the reactance of the D-plate tuning circuit; and code for setting a reactance of the transmitter feed tuning circuit based on the combined impedance value. - View Dependent Claims (14, 15, 16)
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17. An antenna system, comprising:
a D-plate including a D-plate feed conductor;
an E-cylinder including an E-cylinder feed conductor;a transmitter tuning circuit including a T-network with a first inductor, a second inductor, and a shunt leg including a variable capacitor and a parallel capacitor; an E-cylinder tuning circuit including a series inductor and a variable shunt inductor; and
a D-plate tuning circuit including a series variable inductor with a shunt inductor;
wherein the transmitter tuning circuit is configured to receive a signal from a transmitter, the E-cylinder tuning circuit is operably coupled to the E-cylinder feed conductor and the transmitter tuning circuit, and the D-plate tuning circuit is operably coupled to the D-plate feed conductor and the transmitter tuning circuit, wherein an E-cylinder tuning circuit reactance and a D-plate tuning circuit reactance are set such that approximately equal power is provided to the E-cylinder and the D plate, and a transmitter tuning circuit reactance is set based at least in part on the E-cylinder tuning circuit reactance and the D-plate tuning circuit reactance.- View Dependent Claims (18)
Specification