2790results about "Antenna arrays" patented technology

A communication system includes a transmitter including a transmission circuit unit that generates an RF signal for transmitting data and an electric-field-coupling antenna that transmits the RF signal as an electrostatic field, a receiver including an electric-field-coupling antenna and a reception circuit unit that subjects an RF signal received by the electric-field-coupling antenna to reception processing, and a surface-wave propagating means for providing a surface wave transmission line made of a conductor that propagates a surface wave radiated from the electric-field-coupling antenna of the transmitter along a surface of the surface wave transmission line.

A system for wireless power transmission may include one or more charging panels and one or more powered devices. The charging panel may include a pilot analysis circuitry, processor and power transmitter. The pilot analysis circuitry may be configured to analyze the magnitude and phase of a pilot signal from the powered device, based on which the processor may be configured to determine a complex conjugate of the pilot signal. And the power transmitter may be configured to cause radiation of a focused wireless power beam to the powered device in accordance with the complex conjugate of the pilot signal and via one or more antenna elements. The charging panel may be one of a plurality of spatially-distributed charging panels each of which includes respective antenna elements that may form an array of antenna elements configured to collaboratively radiate wireless power as a distributed, retro-reflective beamformer.

A communication system includes the following elements: a transmitter including a transmission circuit unit configured to generate an RF signal for transmitting data and an electric-field-coupling antenna configured to transmit the RF signal as an electrostatic field; a receiver including an electric-field-coupling antenna and a reception circuit unit configured to receive and process the RF signal received by the electric-field-coupling antenna; and a surface-wave propagation medium configured to provide a surface-wave transmission line to transmit a surface wave emanating from the electric-field-coupling antenna of the transmitter with low propagation loss.

An apparatus and method for full-duplex millimeter wave mobile wireless communication are provided. The apparatus includes a Spatial Division Duple (SDD) mobile communication system using millimeter waves, the SDD mobile communication system including a first wireless terminal having a first transmit antenna array having a plurality of first transmit antennas for transmitting a spatially beamformed first transmit beam, and a first receive antenna array having a plurality of first receive antennas for forming a spatially beamformed first receive beam and a second wireless terminal including a second transmit antenna array having a plurality of second transmit antennas for transmitting a spatially beamformed second transmit beam directed towards a receive beam of the first wireless terminal, and a second receive antenna array having a plurality of second receive antennas for forming a spatially beamformed second receive beam directed toward the transmit beam of the first terminal.

Methods and systems for a smart antenna utilizing leaky wave antennas (LWAs) are disclosed and may include a programmable polarization antenna including one or more pairs of LWAs configured along different axes. One or more pairs of leaky wave antennas may be configured to adjust polarization and/or polarity of one or more RF signals communicated by the programmable polarization antenna. RF signals may be communicated via the configured programmable polarization antenna utilizing the configured one or more pairs of the leaky wave antennas. A resonant frequency of the LWAs may be configured utilizing micro-electro-mechanical systems (MEMS) deflection. The polarization and/or polarity may be configured utilizing switched phase modules. The LWAs may include microstrip or coplanar waveguides, wherein a cavity height of the LWAs is dependent on spacing between conductive lines in the waveguides. The LWAs may be integrated in one or more integrated circuits, packages, and/or printed circuit boards.

A magnetically coupled antenna range extender structured to be interposed between an RF antenna and an electronic device. The antenna range extender is positioned between and proximate to one of the RF antenna and the electronic device, for extending the operating range over which information may be communicated and exchanged between the RF antenna and the electronic device.

There are provided a communication device using a millimeter-wave frequency band and a communication method using the millimeter-wave frequency band. The communication device includes a beam scheduling unit configured to schedule uplink and downlink beams corresponding to movement of a terminal, a core network interface unit configured to transmit data provided from the beam scheduling unit to a core network, and to provide data received from the core network to the beam scheduling unit, a mobility management unit configured to configure an uplink and downlink beam set based on inter-beam interference information provided from the beam scheduling unit, and an inter-base station interface unit configured to exchange a control message with another base station under control of the mobility management unit. Therefore, it is possible to efficiently build a cellular network using the millimeter-wave frequency band.

Local oscillator circuitry for an antenna array is disclosed. The circuitry includes an array of rotary traveling wave oscillators which are arranged in a pattern over an area and coupled so as to make them coherent. This provides for a set of phase synchronous local oscillators distributed over a large area. The array also includes a plurality of phase shifters each of which is connected to one of the rotary oscillators to provide a phase shifted local oscillator for the array. The phase shifter optionally includes a cycle counter that is configured to count cycles of the rotary oscillator to which it is connected and control circuitry that is then operative to provide a shifted rotary oscillator output based on the count from the cycle counter. A system and method for operating a true-time delay phased array antenna system. The system includes a plurality of antenna element circuits for driving or receiving an rf signal from the elements of the array. Each element circuit has a transmit and a receive path and a local multiphase oscillator, such as a rotary traveling wave oscillator. Each path has an analog delay line for providing a true-time delay for the antenna element. Preferably, the analog delay line is a charge coupled device whose control nodes are connected to phases of the local multiphase oscillator to implement a delay that is an integer number local multiphase oscillator periods. A fractional delay is also included in the path by using a sample and hold circuit connected to a particular phase of the oscillator. By delaying each antenna element by a true time delay, broadband operation of the array is possible.

A phased array antenna system includes an RF front end, a radome, and an optical calibrator embedded in the radome for enabling in-situ calibration of the RF front end. The optical calibrator employs an optical timing signal generator (OTSG), a Variable Optical Amplitude and Delay Generator array (VOADGA) for receiving the modulated optical output signal and generating a plurality of VOADGA timing signals, and an optical timing signal distributor (OTSD). The in-situ optical calibrator allows for reduced calibration time and makes it feasible to perform calibration whenever necessary.

Deactivating a data tag attached to packaging for user privacy or tamper-evident reasons. A data circuit stores identification information. A plurality of antennae is coupled to the data circuit. At least one antenna of the plurality of antennae is a removable antenna capable of wireless signal transmission at a first range such that removal of the antenna substantially prevents communication of the identification information via the removed antenna and permits communication of the identification information via another antenna of the plurality of antennae at a second range relatively smaller than the first range.

An antenna system, comprising: a phased array antenna (4); and a dielectric lens arrangement (6), for example a single solid dielectric lens (6) comprising a substantially spherical convex surface (12) and a concave surface (14); wherein the dielectric lens arrangement (6) is arranged to magnify the effective aperture of the phased array antenna (4). The concave surface (14) is positioned within the near field of the phased array antenna (4). The phased array antenna (4) is operated at a frequency greater than or equal to 50 GHz. The antenna system retains some ability to electronically scan the beam. The antenna system may be for transmission and/or reception. The antenna system may be used for example for communication between two vehicles.

A dual-band antenna is provided that combines two normally disparate communications modes into a single compact aperture minimizing overall mass and volume, while maintaining high performance efficiency and reciprocity of each individual mode. The antenna is compatible with both optical (near-IR/visible) and RF (microwave/millimeter-wave) transceiver subsystems for high bandwidth communications, applicable primarily to long- to extremely long-range (space-to-ground) link distances. The optical link provides high bandwidth while the RF provides a lower data-rate weather backup, accommodation for traditional navigation techniques, and assistance in cueing the extremely tight optical beam by matching the RF beamwidth to an optical fine-steering mechanism field-of-regard. The configuration is built around a near-diffraction-limited high performance primary mirror shared by both a direct-fed RF antenna design and a Cassegrain optical telescope. Material properties are exploited to combine the optical secondary mirror with the RF feed structure, providing a collimated optical beam interface at the antenna vertex.

In a portable radio communication apparatus including a housing, at least one part of at least one of the housing is formed as a housing electrical conductor portion by an electrically conductive material. The housing electrical conductor portion is connected with a radio communication circuit of the portable radio communication apparatus so as to operate as at least one part of an unbalanced type antenna of the radio communication circuit. Further, the portable radio communication apparatus further includes a boom portion coupled with the housing at least at two positions so as to provide at least one penetrating hole between the housing and the boom portion.

A tamper indicating label is provided. The label may include RFID components and a tamper track coupled to the RFID components. The tamper track should be constructed from a destructible conducting path. Additionally, the tamper track can be formed such that it is damaged when the label is tampered. In one embodiment, adhesion characteristics of the tamper track are adapted to break apart the tamper track when the label is tampered, for example, by removal from an object. The RFID components may retain their RF capability and detect when the tamper track has been damaged to indicate that the label has been tampered. Alternatively, the RFID capability of the RFID components may be disabled when the tamper track is damaged, indicating tampering.

A dual-polarized microstrip antenna includes: at least one metal radiating patch, i.e. a first metal radiating patch; at least one ground metal layer whereon excitation micro-slots are etched; at least one dielectric layer, i.e. a first dielectric layer it is preferred that the dielectric layer is a resonant dielectric layer such as a resonant dielectric layer of air or other layers of optimization resonant materials; at least one set of bipolar excitation microstrip lines; the dielectric layer is between the first metal radiating patch and the ground metal layer. The dual-polarized microstrip antenna of multi-layer radiation structure is designed in a relatively small volume, which effectively saves the cost of antenna installation and maintenance, and is widely applied in the fields of mobile communication and internet technology.

A method includes broadcasting, at a transmitter, messages comprising antenna configuration, antenna spacing and a number of antenna of the transmitter and reference signals; generating, at a receiver, a codebook comprising a plurality of antenna beams based on the broadcasted messages; receiving, at the receiver, the broadcasted reference signals; selecting, at the receiver, an antenna beam among the plurality of antenna beams within the codebook in dependence upon a predetermined performance criteria of a data communication system and in dependence upon the broadcasted reference signals; feedbacking to the transmitter, at the receiver, information comprising the antenna beam selected by the receiver; optimizing, at the transmitter, a beamforming process by utilizing the feedback information from the receiver; transmitting, at the transmitter, data signals by utilizing the optimized beamforming process; and receiving and processing, at the receiver, the data signals in dependence upon the selected antenna beams within the codebook.

An RFID tagged implement assembly includes a metallic implement, and a wireless RFID transponder. The RFID transponder includes a housing; an inductive coupler within the housing, and an RFID chip coupled with the inductive coupler. The inductive coupler is inductively coupled with the metallic implement.

An antenna design for radio frequency identification (“RFID”) tags. More particularly, the present invention relates to design for RFID tags particularly operating in the ultra high frequency (“UHF”) operating band.

A method for full duplex communication includes creating a canceling self interference signal using active noise cancelation in RF circuits and transmission lines with a plurality of receive antennas being used and a signal received by the antennas are destructively combined in the transmission lines and passive RF components, and attaining full-duplex simultaneous in time and overlapping in space wireless transmission and reception on same frequency band responsive to the step of creating a canceling self interference signal.

A chip package includes a plurality of layers including conductive planes connected by vias. The layers include a first portion having an antenna formed therein and a parallel-plate mode suppression mechanism to suppress parallel-plate mode excitation of the antenna. The parallel-plate mode suppression mechanism includes a reflector offset from an antenna ground plane and first grounded vias. A second portion has an interface for connecting to an integrated circuit device wherein the first portion and the second portion are separated by the parallel-plate mode suppression mechanism.

A radio-frequency integrated circuit chip package has N integrated aperture-coupled patch antennas, N being at least two, and includes N generally planar patches, and at least one generally planar ground plane spaced inwardly from the N generally planar patches and substantially parallel thereto. The ground plane is formed with at least N coupling aperture slots therein, and the slots are substantially opposed to the patches. N feed lines are spaced inwardly from the ground plane and substantially parallel thereto, and at least one radio frequency chip is spaced inwardly from the feed lines and coupled to the feed lines and the ground plane. A first substrate layer is spaced inwardly from the feed lines, and is formed with a chip-receiving cavity, with the chip located in the chip-receiving cavity. A second substrate layer is interposed in a region between the ground plane and a plane defined by the patch, the patch is formed in a first metal layer, the ground plane is formed in a second metal layer, and the second substrate layer defines an antenna cavity in which the N generally planar patches are located. “Island” and “offset” configurations, as well as fabrication methods, are also disclosed.

An electromagnetic antenna for Measurement-While-Drilling (MWD) applications is disclosed. The antenna can include several array elements that can act alone or together in various measurement modes. The antenna elements can be disposed in tool body recesses to be protected from damage. The antenna elements can include a ferrite plate crossed or looped by independent current carrying conductors in two or more directions forming a bi-directional or crossed magnetic dipole. Although disclosed as a MWD system conveyed by a drill string, basic concepts of the system are applicable to other types of borehole conveyance.

Disclosed herein are methods of modifying a reaction rate on a semiconductor substrate in a processing chamber which utilize a phased-array of microwave antennas. The methods may include energizing a plasma in a processing chamber, emitting a beam of microwave radiation from a phased-array of microwave antennas, and directing the beam into the plasma so as to cause a change in a reaction rate on the surface of a semiconductor substrate inside the processing chamber. Also disclosed herein are particular embodiments of phased-arrays of microwave antennas, as well as semiconductor processing apparatuses which include a phased-array of microwave antennas configured to emit a beam of microwave radiation into a processing chamber.

An appliance network having a first networked appliance, an energy controller, at least one of a smart dimmer and smart adapter, and a communication network coupling the first networked appliance, energy controller, and the at least one of the smart dimmer and smart adapter for communication therebetween.

A system and method for securing a Radio Frequency (RF) transaction using a Radio Frequency Identification (RFID) transaction device are provided. A random number is transmitted from an RFID reader to an RFID transaction device, an RFID transaction device authentication tag is created in the RFID transaction device, using at least the random number, a routing number associated with a transaction account, and a stored counter value. The RFID transaction device authentication tag is transmitted to the RFID reader, the stored counter value in the RFID transaction device is incremented, and a transaction request for verification, which comprises the RFID transaction device authentication tag and the stored counter value, is transmitted and processed. Either the RFID transaction device authentication tag or the stored counter value, or both, are verified.

A panel array antenna has a waveguide network coupling an input feed to a plurality of primary coupling cavities. Each of the primary coupling cavities is provided with four output ports, each of the output ports coupled to a horn radiator. The waveguide network is provided on a second side of an input layer and a first side of a first intermediate layer. The primary coupling cavities are provided on a second side of the first intermediate layer and the output ports provided on a first side of an output layer, each of the output ports in communication with one of the horn radiators. The horn radiators are provided as an array of horn radiators on a second side of the output layer. Additional layers, such as a second intermediate layer and/or slot layer, may also be applied, for example to further simplify the waveguide network and/or rotate the polarization.

An antenna apparatus comprises selectable antenna elements including a plurality of dipoles and/or a plurality of slot antennas (“slot”). Each dipole and/or each slot provides gain with respect to isotropic. The dipoles may generate vertically polarized radiation and the slots may generate horizontally polarized radiation. Each antenna element may have one or more loading structures configured to decrease the footprint (i.e., the physical dimension) of the antenna element and minimize the size of the antenna apparatus.

This invention relates to a device operable to guide electromagnetic waves in substrate integrated structures, said substrate integrated structures being made in one component. In detail planar antennas are part of said substrate integrated structures, which are connected to electromagnetic waveguides. This invention also allows 3D structures of the above mentioned components in a multilayer substrate.

The invention provides a Ka-band tilt-structure active phased array antenna, so as to provide an active phased array antenna which is high in integration density and can improve maintainability and interchangeability. According to the technical scheme, one path of RF signals transmitted by a transmitting signal processing terminal are transmitted to a power distribution/synthesis network (5) via a signal interface and a radio frequency interface to be divided into M paths of signals; according to information of an azimuth angle and a pitch angle of the phased array antenna provided by the transmitting signal processing terminal in real time, a beam controller (4) calculates and obtains beam pointing of the phased array antenna in real time through an FPGA; the beam pointing of the phased array antenna is converted into phase data needed by each array element under control of the beam controller (4); the data are transmitted to tilt-type TR assembly sub array modules in N channels respectively via a high and low-frequency interconnected multi-core high and low-frequency socket, and under control of the beam controller, M*N paths of signals are transmitted to an antenna array, and thus signal transmission is completed, and synchronous electric control scanning of beams transmitted by the phased array antenna is realized.

The antenna includes a substrate, such as a dielectric material, and an electrically conductive circular ring on the substrate and having an outer diameter and an inner diameter concentrically arranged. The outer diameter is less than {fraction (1/10)} an operating wavelength, and preferably about {fraction (1/20)}^th, so that the antenna is electrically small relative to the wavelength. The inner diameter is in a range of π/6 to π/2 times the outer diameter, and preferably is π/4 times the outer diameter to enhance the gain relative to its area.