Abstract: Systems and methods for operating a communication device. The methods comprise: immersing an antenna in an electric field of an incident radio wave; producing a net change in electrical charge on a surface of an electrodeformative element that acoustically vibrates when the antenna is immersed in the electric field of the incident radio wave; harvesting the electrical charge produced on the surface of the electrodeformative element to provide an antenna receive function; and providing the harvested electrical charge from the antenna to a receiver circuit of the communication device.

Abstract: Systems and methods for improving an efficiency and a gain of a helical antenna. The methods comprise: configuring a conductive helix element of the helical antenna to comprise a proximal segment having a helical winding that extends along an axis of the conductive helix element and has a plurality of turns with linearly progressing pitch angles; configuring the conductive helix element to comprise a distal segment having a helical winding that extends along the axis of the conductive helix element and has a constant pitch angle; and coupling the distal segment to the proximal segment in a series arrangement so that a radio wave reaches a terminal velocity at a point of the coupling.

Abstract: Systems and methods for improving an efficiency and a gain of a helical antenna. The methods comprise: configuring a conductive helix element of the helical antenna to comprise a proximal segment having a helical winding that extends along an axis of the conductive helix element and has a plurality of turns with linearly progressing pitch angles; configuring the conductive helix element to comprise a distal segment having a helical winding that extends along the axis of the conductive helix element and has a constant pitch angle; and coupling the distal segment to the proximal segment in a series arrangement so that a radio wave reaches a terminal velocity at a point of the coupling.

Abstract: Systems and methods for operating a communication device. The methods comprise: immersing an antenna in an electric field of an incident radio wave; producing a net change in electrical charge on a surface of an electrodeformative element that acoustically vibrates when the antenna is immersed in the electric field of the incident radio wave; harvesting the electrical charge produced on the surface of the electrodeformative element to provide an antenna receive function; and providing the harvested electrical charge from the antenna to a receiver circuit of the communication device.

Abstract: Disk antenna includes a plurality of conductive plates forming a stack aligned along a principal axis. The plates include a ground plane plate, a plurality of electrically active plates, and a drive plate disposed between the ground plane plate and the plurality of electrically active plates. A mast is configured to transition from a first condition in which the mast is compactly stowed, to a second condition in which the mast is deployed. Suspension members are configured to couple a radiating end of the mast to the plurality of electrically active plates. The plates are compactly stacked when the mast is in the first condition, and urged to distributed locations along the length of the mast in the second condition.

Abstract: An antenna includes a conductive antenna body having first and second opposing ends with an enlarged width medial portion therebetween. A slot extends from at least adjacent the first end to at least adjacent the second end, and first antenna feed points are adjacent the slot for a first polarization. A conductive antenna member is adjacent the second end of the conductive antenna body and has a planar shape and a second antenna feed point for a second polarization.

Abstract: An antenna includes first and second conductive antenna bodies. The first conductive antenna body has first and second opposing ends with an enlarged width medial portion therebetween, a first slot extending from at least adjacent the first end to at least adjacent the second end, and first antenna feed points adjacent the first slot for a first polarization. The second conductive antenna body has first and second opposing ends with an enlarged width medial portion therebetween, a second slot extending from at least adjacent the first end to at least adjacent the second end, and second antenna feed points adjacent the second slot for the first polarization. The first end of the second conductive antenna body is adjacent the second end of the first conductive antenna body. Third antenna feed points are between the first and second conductive antenna bodies for a second polarization.

Abstract: Production of heavy oil and bitumen from a reservoir is enhanced by cyclic radio frequency (RF) radiation of the well. The invention utilizes RF radiation to introduce energy to the hydrocarbon reservoir in cycles in order to heat the reservoir directly, yet conserves energy over the prior art processes that more or less continuously apply RF or microwave energy. The advantage of cyclic RF is it uses less electricity, and thus lowers operating costs. This is achieved by the soak cycle that allows heat to conduct into the formation and assists the heat penetration that is directly radiated into the formation by the antenna. The invention can also be advantageously combined with cyclic steam stimulation.

Abstract: An antenna includes a conductive antenna body having first and second opposing ends with an enlarged width medial portion therebetween. A slot extends from at least adjacent the first end to at least adjacent the second end, and first antenna feed points are adjacent the slot for a first polarization. A conductive antenna member is adjacent the second end of the conductive antenna body and has a planar shape and a second antenna feed point for a second polarization.

Abstract: A system for heating a hydrocarbon resource in a subterranean formation having a wellbore extending therein may include a radio frequency (RF) source, an RF antenna to be positioned within the wellbore, and a magnetic amplifier to be positioned in the wellbore and configured to couple the RF source to the RF antenna so that the RF antenna supplies RF power to the hydrocarbon resource in the subterranean formation.

Abstract: An antenna includes first and second conductive antenna bodies. The first conductive antenna body has first and second opposing ends with an enlarged width medial portion therebetween, a first slot extending from at least adjacent the first end to at least adjacent the second end, and first antenna feed points adjacent the first slot for a first polarization. The second conductive antenna body has first and second opposing ends with an enlarged width medial portion therebetween, a second slot extending from at least adjacent the first end to at least adjacent the second end, and second antenna feed points adjacent the second slot for the first polarization. The first end of the second conductive antenna body is adjacent the second end of the first conductive antenna body. Third antenna feed points are between the first and second conductive antenna bodies for a second polarization.

Abstract: A system for heating a hydrocarbon resource in a subterranean formation having a wellbore extending therein is provided. The system includes a radio frequency (RF) source, an RF antenna to be positioned within the wellbore, and a magnetic amplifier to be positioned in the wellbore and configured to couple the RF source to the RF antenna so that the RF antenna supplies RF power to the hydrocarbon resource in the subterranean formation.

Abstract: A system for heating a hydrocarbon resource in a subterranean formation having a wellbore extending therein is provided. The system includes a radio frequency (RF) source, an RF antenna to be positioned within the wellbore, and a transformer to be positioned in the wellbore and configured to couple the RF source to the RF antenna so that the RF antenna supplies RF power to the hydrocarbon resource in the subterranean formation.

Abstract: An antenna assembly may include first and second adjacent antenna elements each including a conical antenna body having a base and an apex opposite the base. The antenna assembly may also include a cylindrical antenna body extending from the base of the conical antenna body, and a choke assembly including a choke shaft having a proximal end coupled to the conical antenna body and a distal end opposite the proximal end. The choke assembly may include at least one choke member carried by the distal end of the choke shaft in longitudinally spaced relation from an opposing end of the cylindrical antenna body to define at least one choke slot. Each of the first and second conical antenna bodies may be aligned along a common longitudinal axis with respective apexes in opposing relation to define a symmetrical biconical dipole antenna.

Abstract: An antenna assembly may include first and second adjacent antenna elements each including a conical antenna body having a base and an apex opposite the base. The antenna assembly may also include a cylindrical antenna body extending from the base of the conical antenna body, and a choke assembly including a choke shaft having a proximal end coupled to the conical antenna body and a distal end opposite the proximal end. The choke assembly may include at least one choke member carried by the distal end of the choke shaft in longitudinally spaced relation from an opposing end of the cylindrical antenna body to define at least one choke slot. Each of the first and second conical antenna bodies may be aligned along a common longitudinal axis with respective apexes in opposing relation to define a symmetrical biconical dipole antenna.

Abstract: The broadband small antenna has equal magnetic electric proportions, circular polarization, and an isoimpedance magnetodielectric (?r??r) shell for controlled wave expansion. The shell is a radome without bandwidth limitation, with reflectionless boundary conditions to free space, providing loading and broad bandwidth antenna size miniaturization. The system is spherically structured based upon size, quality (Q) and bandwidth.

Abstract: The biconical loop antenna is the dual and compliment to the biconical dipole antenna, and has broadband omnidirectional horizontally polarized radiation. The antenna includes a conductive antenna body having first and second opposing ends with a medial portion therebetween. The antenna body has a slot extending from at least adjacent the first end to at least adjacent the second end, and the medial portion of the antenna body is wider than the opposing ends. First and second body portions may be conical antenna elements connected together at their respective bases. Antenna feed points are at the medial and chine portion of the antenna body adjacent the slot.

Abstract: A microstrip slot dipole antenna of the inverted F type, includes a coplanar feed, and is suitable for easy peel-and-stick adhesive mounting. The antenna includes a ground plane, a dielectric layer, a horizontal element and a pair of spaced apart vertical elements depending therefrom defining an inverted F antenna above the ground plane with the dielectric layer therebetween. The pair of vertical elements may be conductive vias. A first antenna feed point is on an upper surface of the horizontal element, and a second antenna feed point is on an upper surface of a second vertical element of the spaced apart vertical elements. The second feed point may be a conductive pad on the dielectric layer spaced apart from a first vertical element and insulated from the horizontal element.

Abstract: The antenna includes a base and a plurality of antenna feeds carried by the base for respective different rotational polarizations. A plurality of inner elongate convex coupler elements are carried by the base and connected to respective ones of the antenna feeds for respective different rotational polarizations, and a plurality of outer elongate convex resonant elements are carried by the base and extend outwardly therefrom a distance greater than the plurality of inner elongate convex coupler elements. The plurality of outer elongate convex resonant elements may be tuned to different resonant frequencies to thereby support the different rotational polarizations. Thus, a small circularly polarized antenna with a hemispherical pattern for high frequency (HF) or satellite applications is achieved.

Abstract: The discone antenna includes a conical antenna element, having an apex, and a disc antenna element adjacent the apex of the conical antenna element. An inverted antenna feed structure, such as a flanged coaxial connector or coaxial cable, is connected to the disc and conical antenna elements and extends outwardly from the disc antenna element on a side thereof opposite the apex of the conical antenna element. The discone antenna with such an inverted feed structure facilitates an inverted positioning, for example, on vehicles, rooftops and/or control towers, etc., that will increase the bandwidth pattern in the direction of the potential target.