4351results about "Independent non-interacting antenna combinations" patented technology

An inventory control system and method that tracks inventories of items with RFID tags, includes a reader unit and an intelligent station that tracks RFID tags to determine item information of items to be inventoried. The reader unit transmits and receives RF signals. The intelligent station includes a first RF antenna connected to the reader unit by a first transmission cable through a first switch, and one or more additional RF antennae connected to the reader unit by the same first transmission cable through additional switches. An inventory control processing unit receives item information from the intelligent stations to update inventory information regarding the items to be inventoried.

A wireless power transmission system including at least one source of electromagnetic radiation, a plurality of wireless power receivers that receive radiated electromagnetic energy, a beacon collocated with each wireless power receiver, wherein the beacon generates and radiates a pilot signal when the beacon is in an active state, and an array of transmitting antennas connected to the source of electromagnetic radiation that radiates the electromagnetic radiation in the direction of the beacon in the active state. The electromagnetic radiation can be electronically steered from one wireless power receiver to another by activating and deactivating the beacons collocated with each wireless power receiver.

An integrated repeater includes a housing having opposing sides, a donor antenna mounted on one of the opposing sides, a null antenna mounted on the other of the opposing sides, and repeater electronics mounted in the housing and operatively interconnecting the donor antenna and the null antenna. The repeater electronics include a beamforming arrangement for creating a desired antenna pattern of the donor antenna relative to a base station and a desired antenna pattern of the null antenna relative to subscriber equipment, and interference cancellation electronics for cancelling interference feedback signals between the donor antenna and the null antenna in both an uplink path and a downlink path.

An apparatus and method using a front internal dual band television antenna or a pair of internal dual band antennas for a portable entertainment module having a housing and a display screen. A front spiral antenna is embedded in the housing around the periphery of the display screen and is tuned to compensate for the influence nearby components. A rear logo-periodic antenna is located inside the rear of the housing and is modified to have various environmental openings to fit around existing components, vents and structures in the housing. Any pair of different antenna architectures could be used.

The invention relates to a handheld device comprising a first antenna (401, 701, 901, 931, 961, 1101, 1151, 1301, 1501) arranged to operate in at least a first frequency band, and a second antenna (402, 702, 902, 1102, 1302, 1502, 2210) arranged to operate in at least a second frequency band, wherein said second frequency band is different from said first frequency band. According to the invention, the second antenna comprises a slot antenna comprising at least one slot in at least one conductive layer. The invention also relates to enhancement of the isolation between first and second antennas in a handheld device.

A intelligent backhaul radio is disclosed, which can operate by zero division duplexing for use in PTP or PMP topologies, providing for significant spectrum usage benefits among other benefits. Specific system architectures and structures to enable active cancellation of multiple transmit signals at multiple receivers within a MIMO radio are disclosed. Further disclosed aspects include the adaptive optimization of cancellation parameters or coefficients.

Electronic devices may be provided that contain wireless communications circuitry. The wireless communications circuitry may include radio-frequency transceiver circuitry and antenna structures. The antenna structures may include conductive housing structures such as a peripheral conductive housing member. The antenna structures may be based on an inverted-F antenna resonating element or other types of antenna resonating element. An electronic device may have near field communications circuitry and non-near-field communications circuitry such as cellular telephone, satellite navigation system, or wireless local area network transceiver circuitry. Antenna structures may be configured to handle signals associated with the non-near-field communications circuitry. The antenna structures may also have portions that form a near field communications loop antenna for handling signals associated with the near field communications circuitry.

An antenna device that uses an exterior metal frame is provided. The antenna includes a Printed Circuit Board (PCB); a plurality of segment-type exterior metal frames spaced apart from the PCB; a feeding portion connected to one metal frame of the plurality of segment-type exterior metal frames; and a slit located between the PCB and the one metal frame, wherein the one metal frame fed through the feeding portion operates with radiation, or the slit operates with radiator, or another exterior metal frame fed through the feeding portion operates with radiation.

The present invention relates to an antenna arrangement connectable to a transceiver for transmitting and receiving RF signals in at least two separate frequency bands. The antenna arrangement has at least two sets of antenna elements arranged on a reflector, and the antenna elements are arranged in an interleaved configuration along a single column. The two separate frequency bands are substantially non-overlapping but relatively close to each other, and the distance between adjacent antenna elements in said column is substantially the same along the column.

The present invention relates to an electromagnetic wave transmission/reception source for a multireflector antenna of the Cassegrain type comprising longitudinal-radiation means operating in a first frequency band and an array of n radiating elements of the travelling-wave type operating in a second frequency band with the n radiating elements arranged symmetrically around the longitudinal-radiation means, the array and the longitudinal-radiation means having an approximately common phase centre, the array of n radiating elements being excited by a waveguide of polygonal cross section. The invention applies especially in satellite communication systems operating in the C-, Ku- or Ka-bands.

An compact and rugged antenna system particularly suited to direction finding includes a plurality of antenna arrays for receiving respective frequency bands and colocated on a mast with separation between antenna arrays along the mast. The mast includes a coil wound of an insulator and functioning as a loaded inductor to shift the mast resonance out of the frequency band of the antenna system. A VHF dipole array having elements shaped to reduce scattering to UHF and SHF arrays is supported on movable arms which allow retraction that reduces height and provides mechanical protection to one or more other arrays as well as damping against vibration by contacting the mast with shaped portions of the dipole elements. The bowtie elements of the UHF array are angled at a central region to optimize array diameter at low UHF frequencies. A finned RF electronics housing is preferably provided which reduces solar loading and dissipates heat from antenna electronics. Asymmetrically keyed fittings are provided to permit accurate antenna system, array and element positioning and replaceable components and wiring, both internally and externally of the housing, is held in position to allow field repairs without recalibration.

An antenna device includes a first antenna element made of a conductive metallic plate and formed in a shape of a meander; a second antenna element made of another conductive metallic plate and formed in another shape of a meander; and a sealing material which is made of a high-dielectric material and is configured to seal the first and second antenna elements by the sealing material, wherein the first antenna element is arranged in parallel with the second antenna element, and wherein the first and second antenna elements are embedded inside the sealing material by insert molding.

An antenna module and a portable communication terminal equipped with the antenna module are provided. The antenna module has a space-saving design, and also has both a capability for long communication distance for a tag function and a capability for wide communication range for a reader/writer function.

A first antenna coil (11) for communication with a reader/writer and a second antenna coil (12) for communication with an IC tag are disposed on a base substrate (10). The first antenna coil (11) is disposed in an outermost periphery section of the base substrate (10) so that a communication distance is attained. The second antenna coil (12) is disposed within an inner periphery of the first antenna coil (11) so as to achieve overall size reduction of the module.

In a notebook type computer terminal, a plate type slot antenna is provided between a display panel and a surrounding wall of a display panel housing so that a radiator portion thereof is projecting from a frame of the display panel and a stay, which are made of conductive material by a length more than a predetermined dimension S. A ground portion of the antenna is connected not only to a ground of a radio transceiver unit but also to the display panel housing made of conductive material through the stay.