354results about "Electrically long antennas" patented technology

A conductorless charging and power system for electronic appliances and method for communicating power to a power receiver employing wireless energy transmission are disclosed. The remote charging system includes a power transmission unit, which transmits energy as a directional power beam, and a power receiver system that receives the transmitted energy. The power receiver system is preferably incorporated in an appliance and includes an energy receptor capable of receiving the wireless power beam and transferring the energy from the beam to an energy storage device included in the appliance. The power transmission unit receives and tracks a power request signal from the power receiver system to track the power receiver system location during energy transmission. Data streams may be incorporated into the wireless signals of the remote charging system, allowing the remote charging system to function as a communications pathway as well as a power delivery system.

An antenna coil includes an air-core coil wound helically in a plane and a plate magnetic core member inserted in the air-core coil to be approximately parallel with a plane of the air-core coil. The magnetic core member is formed by a soft magnetic metal, an amorphous or ferrite, or a composite member of a powder, flake and plastic, or rubber. The magnetic core member is formed by performing an injection molding operation or a compressing molding operation of the composite member. Alternatively, the magnetic core member is a magnetic coating formed by applying and drying the composite member. A non-magnetic conductive plate that has a conductivity is layered on a surface of the air-core coil through which the magnetic core member is inserted. The conductive plate is made of a copper, a copper alloy, an aluminum or an aluminum alloy having 0.01 to 2 mm thickness. The antenna coil is operated by relatively high frequency while it is rigid relatively.

Provided is a millimeter wave band patch antenna. The patch antenna includes a multi-layer substrate, at least one metal pattern layer, an antenna patch, a ground layer, and a plurality of vias. In the multi-layer substrate, a plurality of dielectric layers are stacked. The metal pattern layer is disposed between the dielectric layers except for a center region of the multi-layer substrate. The antenna patch is disposed on an upper surface of the multi-layer substrate in the center region. The ground layer is disposed on a lower surface of the multi-layer substrate opposing to the upper surface. The vias is disposed around the center region through the dielectric layers for electrically connecting the metal pattern layer to the ground layer. The center region, which is surrounded by the ground layer and the vias, functions as a resonator.

A dual-antenna diversity antenna system that operates within a low frequency band range is disclosed. Two antennas are folded separately onto a single three dimensional dielectric substrate in a meander pattern configuration. Each antenna has an independent feed port and ground pin. The two antennas are configured within a compact mobile terminal to produce high isolation and low correlation at resonating frequencies within the 700 Megahertz frequency band.

An antenna coil includes an air-core coil wound helically in a plane and a plate magnetic core member inserted in the air-core coil to be approximately parallel with a plane of the air-core coil. The magnetic core member is formed by a soft magnetic metal, an amorphous or ferrite, or a composite member of a powder, flake and plastic, or rubber. The magnetic core member is formed by performing an injection molding operation or a compressing molding operation of the composite member. Alternatively, the magnetic core member is a magnetic coating formed by applying and drying the composite member. A non-magnetic conductive plate that has a conductivity is layered on a surface of the air-core coil through which the magnetic core member is inserted. The conductive plate is made of a copper, a copper alloy, an aluminum or an aluminum alloy having 0.01 to 2 mm thickness. The antenna coil is operated by relatively high frequency while it is rigid relatively.

An antenna system includes a VHF dipole antenna having a pair of rod elements disposed substantially in a line, and a UHF Yagi antenna having a radiator and a director disposed on the rod elements.

A method of forming ad hoc RSI hierarchical communication networks among pluralities of wireless transceivers includes assigning to each of the transceivers one or more common designations. A network organization routine of the transceivers operates to establish hierarchical networks based on the transceivers' common designations, resulting in a logical network organization that provides efficiencies for acquiring information from particular transceivers that share a common designation. Each transceiver's common designation is used by a digital processor of the transceiver to selectively receive data packets that are intended for receipt by transceivers sharing the particular common designation. Such a “common designation” network reduces power consumption and signal interference thereby increasing battery life. Each transceiver may include a sensor interface a query handling routine in communication with a memory of the transceiver for serving as a dynamic distributed hierarchical database system of information such as, for example, sensor-derived information and time-sensitive information.

An antenna coil 10 comprises an air-core coil 12 which is wound helically in a plane and a plate magnetic core member 13 which is inserted in the air-core coil 12 so as to be approximately parallel with a plane of the air-core coil 12. The magnetic core member 13 is formed by a soft magnetic metal, an amorphous or ferrite, or a composite member of a powder, flake and plastic, or rubber. The magnetic core member 13 is formed by performing an injection molding operation or a compressing molding operation of the composite member. Alternatively, the magnetic core member 13 is a magnetic coating which is formed by applying and drying the composite member. A non-magnetic conductive plate 14 which has a conductivity is layered on a surface of the air-core coil 12 through which the magnetic core member 13 is inserted. The conductive plate 14 is made of a copper, a copper alloy, an aluminum or an aluminum alloy having 0.01 to 2 mm thickness. By doing this, it is operated by relatively high frequency while it is rigid relatively.

A semiconductor package and a manufacturing method thereof are provided. The semiconductor package includes a substrate, a semiconductor chip, a package body and an antenna layer. The semiconductor chip is disposed on the substrate. The package body encapsulates the semiconductor chip and includes an upper surface. The antenna layer is formed on the upper surface of the package body and includes two antenna slot groups connected together. Each antenna slot group includes a wave guiding slot extending along a first direction, and an irradiation slot group extending along a second direction, wherein the irradiation slot group is connected to the wave guiding slot.

A communication antenna (10) having a driven element (16) extending between a feed point (13) and an attachment point (15) to a top loaded element in which the driven element (16) is longer than the shortest distance (P) between the feed point (13) and the attachment point (15), the driven element (16) being configured to follow a meandering path between the feed point (13) and the attachment point (15). The driven element (16) is at least in part in the form of straight sections joined to give a zigzag configuration (16). Alternatively the driven element (16) is at least in part in the form of curved sections. At least a pair of parasitic elements (18, 19) can be provided with the members of the pair (18, 19) being disposed on opposite sides of, and off-set from, the driven element (16) and parallel to a straight ling (P) linking the feed point (13) to the attachment point (15); the parasitic elements (18, 19) serving to provide impedance matching and increased bandwidth and providing shielding against radiation from the antenna in a predetermined direction. Typically passive elements can be incorporated with the parasitic elements (18, 19) to provide for the overall reduction in the size of the antenna (10.

An antenna device performs communications with an identification tag by being connected to a reading device that reads identification information of the identification tag. The antenna device includes a first power feeding unit configured to receive power from the reading device; a resonator that is electromagnetically coupled to the first power feeding unit, the resonator having a predetermined bandwidth including a working frequency of the reading device; and a second power feeding unit that is electromagnetically coupled to the resonator, the second power feeding unit being terminated according to a predetermined resistance value.

An antenna device is provided with a first connecting electrode, a first tunnel diode, a first antenna member and a fixed electrode. The first connecting electrode is configured to be connected to a fixed potential via a load. The first tunnel diode has a pair of electrodes. One of the electrodes of the first tunnel diode is connected to the first connecting electrode, and the other electrode of the first tunnel diode is connected to the first antenna member. The first antenna member has a conductive property and includes a first portion and a second portion. The first portion of the first antenna member is connected to the other electrode of the first tunnel diode. The fixed electrode is connected to the second portion of the first antenna member. The fixed electrode is configured to be connected to the fixed potential.

A printed quasi-tapered tape helical element and printed helical array antenna arc disclosed. The helical element comprises a thin helix conductor having a uniform section associated with a tapered section. The helix conductor can be printed on a thin dielectric sheet and bonded to a hollow composite dielectric support. A solid copper conductor is configured to provide electrical connection between a feeding point of the helix conductor and a microstrip line of a microstrip feed network. The uniform and tapered helix turns are respectively wrapped around the uniform and tapered sections, which enables impedance matching, axial mode excitation, gain and radiation patterns, and damping out of standing waves generated in current distribution over the helix conductor. Conductive composite cups surrounding each helical element reduces mutual coupling in array environment. Thus, the helical element and the array antenna achieve low on-axis and off-axis axial ratio performance over the wideband for global coverage.

The present invention discloses an antenna comprising a substrate, a first dual-frequency antenna, a second dual-frequency antenna, a first frequency select switch, a second frequency select switch and a feed end, wherein the first and the second dual-frequency antennas are disposed on the substrate, and the first frequency select switch has a first end connected to the first dual-frequency antenna and a second end connected to a first radiating conductive wire, and the second frequency select switch has a first end connected to the second dual-frequency antennas and a second end connected to a second radiating conductive wire, and the feed end is disposed between the first dual-frequency antenna and the second dual-frequency antenna. The present invention also discloses an antenna array comprising a substrate, two dual-frequency antenna pairs and a feed structure; wherein the two dual-frequency antenna pairs are installed on the substrate correspondently and the feed part is connected between the two dual-frequency antenna pairs.

A reradiation antenna including an insulation panel; a ground contact formed on one side of the insulation panel; a slot formed by eliminating a part of the ground contact by exposing the insulation panel; a power feeding unit formed on the insulation panel between the slot and separated from the ground contact and connected with a power source using a first end of the power feeding unit; and a radiation unit formed on one side of the insulation panel, and connected with a second end of the power feeding unit positioned at an opened end of the slot.

A method of modeling or constructing a switch element uses an ingress stage with input sorters and input routers; an egress stage with output routers and output sorters; and a center stage interconnecting the ingress and egress stages. Routers are partitioned such that each partition is assigned to only one data line. A switch controller and method may use such modeling to advantage. For example, during initial configuration of the switch element, a subset of connections are excluded from a control algorithm that initially configures the switch with the subset being subjected to post processing. Furthermore, a fast rearrangement of the switch rearranges only part of the existing connections and then adds / deletes cross connects as necessary to complete the connections.

A novel and useful apparatus for and method of local oscillator (LO) generation with non-integer multiplication ratio between the local oscillator and RF frequencies. The LO generation schemes presented are operative to generate I and Q square waves at a designated frequency while avoiding the well known issue of harmonic pulling. The input signal is fed to a synthesizer timed to a rational multiplier of the RF frequency L / N fRF. The clock signal generated is divided by a factor Q to form 2Q phases of the clock at a frequency of L(N*Q) fRF, wherein each phase undergoes division by L. The phase signals are input to a pulse generator which outputs a plurality of pulses. The pulses are input to a selector which selects which signal to output at any point in time. By controlling the selector, the output clock is generated as a TDM based signal. Any spurs are removed by an optional filter.

A mobile device at least includes a dielectric substrate, an antenna array, and a transceiver. The antenna array at least includes a first antenna and a second antenna. The first and second antennas are both embedded in the dielectric substrate. The first and second antennas have different polarizations. The transceiver is coupled to the antenna array so as to transmit or receive a signal. The polarization of the antenna array may be dynamically adjusted by controlling a phase difference between the first antenna and the second antenna.

A circularly-polarized antenna is provided, and includes a conductive backplane with a plurality of panels, a vertical array of patch radiators disposed on one of the backplane panels, and a feed stripline disposed on the backplane panel. The backplane panels are vertical, planar, rectangular and form a right prism. The vertical array has a radiator spacing of one wavelength, each radiator has a face and four edges, and each edge has a length of approximately one half wavelength. The feed stripline includes an input coupled to a coaxial feed cable, and a pair of outputs, orthogonal in position and phase, coupled to each of the radiators.

An antenna architecture containing a broadband resonant cap positioned over a radiating patch is disclosed. The resonant cap consists of a rectangular resonant patch at the center with parasitic patches in close proximity of the four edges of the resonant patch. The parasitic patches may be coplanar with the resonant patch or may be mounted at an angle with respect to the vertical axis of the resonant patch. The resonant cap reduces the HPBW of the emitted radiation and improves emission directivity.

A novel and useful apparatus for and method of local oscillator (LO) generation with non-integer multiplication ratio between the local oscillator and RF frequencies. The LO generation schemes presented are operative to generate I and Q square waves at a designated frequency while avoiding the well known issue of harmonic pulling. The input signal is fed to a synthesizer timed to a rational multiplier of the RF frequency L / N fRF. The clock signal generated is divided by a factor Q to form 2Q phases of the clock at a frequency of L(N*Q)fRF, wherein each phase undergoes division by L. The phase signals are input to a pulse generator which outputs a plurality of pulses. The pulses are input to a selector which selects which signal to output at any point in time. By controlling the selector, the output clock is generated as a TDM based signal. Any spurs are removed by an optional filter.

A WWAN printed circuit antenna includes three monopole antennas in the printed circuit board. Signals are fed in from the feed monopole antenna. The first and second radiating monopole antennas are actuated by the feed monopole antenna in an electromagnetic coupling way. Therefore, a three-dimensional structure derived from the planar inverted-F antenna can be replaced, and the limitation of space usage can be overcome.

An REID antenna assembly configured to be energized with a carrier signal is disclosed. The REID antenna assembly includes an inductive component including a loop antenna assembly, at least one capacitive component coupled to the inductive component, and an eddy current trap positioned a predetermined distance from the loop antenna assembly.

A battery is charged utilizing electric power provided by a power supply line included in a cable that is in accordance with IEEE 1394. A charging apparatus and a personal computer are connected together by the cable. A power source unit in the personal computer converts AC voltage to direct voltage and supplies the DC voltage to the power supply line. The voltage is applied to a charging circuit via the power supply line, thereby charging the battery. A signal line included in the cable is used when the charging apparatus and personal computer send and receive data to and from each other.