Abstract: A satellite dish heating system is installed on the rear side of a residential or commercial satellite dish to generate enough heat to keep the front face of a satellite dish reflector and the extension arm leading to the Lnbf warm enough to defrost the dish and arm during winter weather conditions including snow, ice, frost and ice fog, which interfere with satellite dish reception.

Abstract: An apparatus that achieves high isolation between dipoles and feed systems is provided. The apparatus includes a plurality of transmission lines, a first dipole electrically connected to a first set of the plurality of transmission lines, and second dipole electrically connected to a second set of the plurality of transmission lines. The electric field of the first dipole is parallel to an electric field of the first set of the plurality of transmission lines, and an electric field of the second dipole is parallel to an electric field of the second set of the plurality of transmission lines.

Abstract: A broadband planar inverted-F antenna includes a first radiation conductor, a second radiation conductor and a third radiation conductor. The first radiation conductor includes a first inclined-plane portion and a feeding point. The feeding point is located at one end of the first inclined-plane portion. The second radiation conductor is connected to the first radiation conductor at the feeding point. The third radiation conductor is connected to the first radiation conductor, and includes a second inclined-plane portion and a ground point. The second inclined-plane portion is separated from and facing to the first inclined-plane portion. The ground point is located at one end of the second inclined-plane portion and facing to the feeding point, wherein the distance between the first inclined-plane portion and the second inclined-plane portion is gradually increased from the part near the feeding point along a direction departing from the feeding point.

Abstract: A tunable antenna is disclosed. The tunable antenna includes a ground element for providing grounding, a signal feed-in terminal, a radiation unit electrically connected to the signal feed-in terminal and including a long side extended from the signal feed-in terminal along a first direction, a short side extended from the signal feed-in terminal along a second direction, and a branch electrically connected between the signal feed-in terminal and the ground element, a coupling unit for coupling to the long side, and a switch unit for connecting or disconnecting the coupling unit to/from the ground element to change a coupling relationship between the coupling unit and the long side, such that the tunable antenna respectively operates in a first frequency band and a second frequency band.

Abstract: An antenna device for improving antenna performance of a portable terminal having a metal edge installed on a case frame is disclosed. The antenna device includes a main board equipped with a power supply end for supplying power and a ground surface for grounding the main board, a loop radiator connected with the power supply end of the main board at first end and connected with the ground surface of the main board at a second end, and a metal body disposed along an edge of the portable terminal and electrically connected with the ground surface of the main board.

Abstract: Techniques, devices and systems use pseudo-conductor materials as antennas to receive or radiate electromagnetic energy for communications and other applications. Methods of configuring an antenna can include, in some implementations, selecting a pseudo-conductor material having an electromagnetic constitutive property, wherein the electromagnetic constitutive property comprises a real part of the electromagnetic constitutive property that is greater than a corresponding imaginary part of the electromagnetic constitutive property; and forming the pseudo-conductor material into an antenna shape configured, upon being excited, to radiate emissions that satisfy a predefined antenna performance, such that the pseudo-conductor material formed in the antenna shape weakly guides an electromagnetic wave on the pseudo-conductor material using a leaky mode that is below cutoff to establish a field structure to radiate the emissions from the pseudo-conductor material that satisfy the antenna performance.

Abstract: A variable permeability antenna apparatus includes a first region configured for coupling with a feed of a radio frequency signal and a second region for transmitting the radio frequency signal. The permeability of material at the second region is greater than the permeability of material at the first region. Also, a spiral antenna for transmission or reception of radio frequency signals is disclosed.

Abstract: An energy conversion device may include a first antenna and a second antenna configured to generate an AC current responsive to incident radiation, at least one stripline, and a rectifier coupled with the at least one stripline along a length of the at least one stripline. An energy conversion device may also include an array of nanoantennas configured to generate an AC current in response to receiving incident radiation. Each nanoantenna of the array includes a pair of resonant elements, and a shared rectifier operably coupled to the pair of resonant elements, the shared rectifier configured to convert the AC current to a DC current. The energy conversion device may further include a bus structure operably coupled with the array of nanoantennas and configured to receive the DC current from the array of nanoantennas and transmit the DC current away from the array of nanoantennas.

Abstract: An antenna apparatus for a portable terminal having a main board is provided. The antenna apparatus includes a main antenna that electrically connects to a feed line of the main board. A metal frame is constructed as part of a case frame forming an exterior of the portable terminal. The metal frame is divided into first and second parts that are separated. The first part electrically connects to the main antenna or to the main board feed line, and is designed to radiate. The second part electrically connects to a ground surface of the main board. The metal frame enhances overall antenna performance rather than causing degradation through interference.

Abstract: According to one embodiment, an antenna device according to this embodiment includes first and second feed terminals. The distance between the first and second feed terminals is set to a distance less than or equal to almost one quarter a wavelength corresponding to a predetermined resonant frequency. A first end of the first antenna including a first band, as a communication band, including the resonant frequency is connected to the first feed terminal. A first end of the second antenna including a second band, as a communication band, including at least the resonant frequency of the first antenna is connected to the second feed terminal. A first protruding portion is provided between the first and second antennas so as to protrude from a ground pattern of an antenna board.

Abstract: An embedded antenna is disclosed. The embedded antenna comprises a coaxial cable and a grounding connecting part. The coaxial cable comprises a center conductor, an insulating layer and an outer sheath. The center conductor comprises a signal transmission part and a radiating part. The radiating part electrically connects the signal transmission part and provides a resonance frequency. The insulating layer covers the signal transmission part and the radiating part. The outer sheath covers the signal transmission part but not the radiating part. The grounding connecting part electrically connects the system grounding part and the outer sheath.

Abstract: A dielectric artificial impedance surface antenna (DAISA) including a dielectric with a thickness, the dielectric thickness varying to provide a modulated impedance to a signal traversing the dielectric, the dielectric having a first surface, and a second surface opposite the first surface.

Abstract: An antenna system includes a substrate, a conductive ground plane, and an upper antenna element. A slot that is free of conductive material extends through the ground plane to define a lower antenna element from a portion of the ground plane. The upper antenna element is spaced apart and overlies at least a portion of the lower antenna element. The upper antenna element is electrically connected to the ground plane and to an antenna feed element. The upper antenna element is configured to electrically resonate responsive to a defined RF signal. The lower antenna element is configured to resonate through capacitive coupling to the resonating upper antenna element.

Abstract: A communication device includes an antenna structure, wherein the antenna structure includes a ground element and an antenna element. One edge of the ground element has a notch, and the notch is extended into the interior of the ground element to form a slot region. The slot region is substantially extended along the edge of the ground element. The antenna element includes a first radiating portion and a second radiating portion. The first radiating portion is disposed in the slot region and is excited to form at least a resonant mode in the first operating band of the antenna element. The second radiating portion is an open-slot antenna and is formed by the slot region. The second radiating portion is excited to form a resonant mode in the second operating band of the antenna element.

Abstract: A communication device including a multilayer circuit board and an antenna structure therein is provided. The multilayer circuit board has at least a first plane, a second plane, and a third plane. A ground plane is disposed on one of the planes, and the ground plane is in proximity to a clearance region of the multilayer circuit board. An antenna structure is disposed in the clearance region. The antenna structure includes a first metal portion and a second metal portion. The first metal portion is coupled to a signal source through a feeding portion. The second metal portion includes at least a first line segment and a second line segment. The first line segment and the second line segment are disposed respectively on any two planes of the multilayer circuit board. The first metal line and the second metal line forms a loop structure through two conductive vias.

Abstract: A method and apparatus for providing a broadband near field of an antenna are disclosed. A small broadband loop antenna may include a printed circuit board (PCB) substrate with multiple layers. Printed on the PCB substrate are dual loops sharing a same driver circuit, an impedance matching network, a primary ground layer and a conductive layer. A shorting via connects the dual loops to a ground plane. The antenna may be tuned to a desired operating frequency by adjusting parameters of the loop, such as the position of the shorting via.

Abstract: Various mobile communication terminals and methods therefore, concerning antenna improvements, are discussed. One mobile communication terminal is described which includes a battery between the front side and planar outer rear side of the terminal, a display on the front side of the terminal, a first part having conductive material and constituting a first portion of the planar outer rear side of the mobile communication terminal, a second part having a non-conductive material and constituting a second portion of the planar outer rear side of the terminal, and an antenna mounted within the terminal. At least a part of the antenna is disposed between the front side and the second portion of the planar outer rear side of the terminal.

Abstract: An antenna device has a substrate having a first surface and a second surface on the opposite side of the first surface, a first-surface-side conductive layer formed on the first surface of the substrate, a second-surface-side conductive layer formed on the second surface of the substrate, and through hole conductors connecting the first-surface-side conductive layer and the second-surface-side conductive layer. The first-surface-side conductive layer and the second-surface-side conductive layer are formed such that the first-surface-side conductive layer and the second-surface-side conductive layer are connected via the through hole conductors in a crank form from the first surface to second surface of the substrate.

Abstract: An antenna device of an embodiment includes: an antenna having a feeding point and an end portion apart from the feeding point, the end portion being an open end; a variable impedance matching circuit connected to the antenna at the feeding point; a probe placed in such a position that the distance from the end portion to a tip of the probe is equal to or shorter than one eighth of the wavelength corresponding to the maximum radio frequency used in the antenna device; and a controller that is connected to the probe, and controls the variable impedance matching circuit, based on an electrical signal measured with the probe.

Abstract: There is provided a portable device which includes a first housing, a housing member removable from the first housing, where the housing member includes an exposed portion, the exposed portion projecting from the first housing when the housing member is inserted in the first housing, a second housing coupled with the first housing so as to be allowed to be folded on the first housing, the second housing including a wall made of electrical insulating material, and an antenna disposed in the second housing and surrounded partially with the wall, a part of the antenna and the exposed portion facing each other via the wall when the first and second housings are folded on each other.