Abstract: The present invention is a compact directional receiving antenna and method for providing same utilizing true-time-delay methods to achieve a wide pattern bandwidth in a compact size. In one embodiment, two right-triangular-shaped loops are positioned symmetrically in a vertical plane and about a vertical axis so that they share a common apex. In another embodiment, two pairs of loops are positioned in an orthogonal manner about a vertical axis to form an electronically rotatable antenna array. In yet another embodiment, a single loop is provided with a pair of spaced couplers.

Abstract: An active antenna array is arranged to activate subsets of switchable elements causing the antenna to form a first beam having a first beam pattern, and later to form a second beam having a second beam pattern of substantially identical far field radiation pattern to the first beam pattern but with different origins. A receiver receives radiation reflected from a target back to the antenna when the antenna is configured with the first beam pattern and then when configured with the second beam pattern, and compares the phase of the radiation received at the receiver when the antenna is configured with the first beam pattern with the phase of the radiation received at the receiver when the antenna is configured with the second beam pattern to provide a phase difference signal. A target locating means determines the angular location of the target from the phase difference signal.

Abstract: An outdoor broadband unit receives a current time and maintenance mode parameters from a network device. The outdoor broadband unit also determines a mode associated with selection of an antenna beam, provided on an antenna of the outdoor broadband unit, based on at least one of the current time and the maintenance mode parameters. The outdoor broadband unit further selects an antenna beam or a serving cell to use based on the determined mode.

Abstract: In a particular embodiment, a method of controlling a radiation pattern includes selecting a signal processing characteristic to vary based on a radiation pattern to be emitted by an antenna array of a wireless device, wherein the antenna array includes a plurality of antennas, wherein the signal processing characteristic provides a target resultant radiation pattern, and wherein the signal processing characteristic is applies to less than all elements of the antenna array, and varying the signal processing characteristic across time, frequency, or a combination thereof.

Abstract: The present invention discloses a smart antenna system for a portable device. The smart antenna system includes a plurality of directional antennas, disposed at a plurality of positions of the portable device, having a plurality of directional radiation patterns corresponding to a plurality of areas; wherein all of the plurality of directional radiation patterns substantially form an omni directional radiation pattern.

Abstract: An antenna beam scan unit includes: a Rotman lens that performs power division and synthesis between plural antenna ports and three or more beam ports; plural antenna elements which are connected to the respective antenna ports and to or from which radio waves are inputted or outputted; plural amplifiers that are connected to the respective beam ports of the Rotman lens and perform amplitude modulation on a signal; input paths for a transmission signal disposed in association with the amplifiers; switches for switching the input paths; and a beam control unit. The input paths include first paths and second paths on which a signal that is out of phase with a signal on the first paths is produced. The beam control unit selects two adjoining beam ports, and can switch the first paths and second paths as the input paths for the two beam ports.

Abstract: 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.

Abstract: An antenna apparatus and a method for controlling an antenna array are provided. The method includes the following steps. A plurality of selectable antenna configurations is provided for a directional service. One of the antenna configurations is selected for an antenna element of the antenna array according to a service criterion. The antenna apparatus includes an antenna array, a controller, and a switching unit. The antenna array includes a plurality of antenna elements. The controller is adapted to generate a control signal based on selecting one of a plurality of antenna configurations according to a service criterion for an antenna element to provide a directional service. The switching unit is adapted to configure each of the antenna elements according to the control signal.

Abstract: A phased-array transmitter and receiver that may be effectively implemented on a silicon substrate. The transmitter distributes to front-ends, and the receiver combines signals from front-ends, using a power distribution/combination tree that employs both passive and active elements. By monitoring the power inputs and outputs, a digital control is able to rapidly provide phase and gain correction information to the front-ends. Such a transmitter/receiver includes a plurality of radio frequency (RF) front-ends and a power splitting/combining network that includes active and passive components configured to distribute signals to/from the front-ends.

Abstract: An antenna system includes an antenna and N integrated passive components (IPCs). A first end of each IPC of the N IPCs is directly coupled to the antenna for receiving signals of a band corresponding to the IPC and filtering signals of bands corresponding to other IPCs of the N IPCs. The antenna system can prevent signals of various bands from interfering with each other, reduces parasitic effect, and further improves nonlinear distortion.

Abstract: This disclosure provides systems, methods, and apparatus for antenna switching for simultaneous communication. An can include a plurality of antennas including a first antenna and a second antenna. The apparatus can further includes a plurality of receive circuits including a first receive circuit. The apparatus can further include a controller configured to determine one or more performance characteristics of the first antenna at a first time. The controller is further configured to determine a difference between the one or more performance characteristics of the first antenna at the first time and one or more performance characteristics of the first antenna at an earlier time. The controller is further configured to selectively switch the first receive circuit from receiving wireless communications via the first antenna to receive wireless communications via the second antenna if the difference is larger than a threshold. Other aspects, embodiments, and features are also claimed and described.

Abstract: A mobile radio antenna comprises a multi beam forming device which comprises a drivable drive element having a drive shaft and at least two output shafts. Each output shaft is substantially parallel to the drive shaft. At least one output gear is rotationally fixed to the output shaft. At least two phase shifters are each operatively connected to a respective output shaft via a respective drive device. A changeover device enables the drive element to be operatively connected selectively to at least one of the output gears.

Abstract: Disclosed are a beam forming method and a multiple antenna system using the same. There is provided a multiple antenna system which forms optimal beam patterns through a transmission of a training sequence between a transmitter and a receiver, each including a plurality of antennas, the multiple antenna system comprising: a transmitter selecting antennas to be activated according to a level and transmitting the training sequence to a receiver through the selected antennas; a receiver selecting the antennas to be activated according to the level and transmitting to the transmitter an index of an optimal transmission weight vector significantly reducing a cost function based on the training sequence transmitted from the transmitter, wherein the transmitter selects antennas so that the beam patterns formed by the antennas selected at a q-th level (q: the index of the level) include the beam patterns formed by the antennas selected at a q+1-th level.

Abstract: An RF receiving circuit unit that receives a GPS satellite signal from a GPS satellite is intermittently driven by a first driving control of intermittently driving the RF receiving circuit unit with a first intermittent driving pattern and a multistage driving control of intermittently driving the RF receiving circuit unit with a multistage intermittent driving pattern in which a driving period in the first intermittent driving pattern is set to a second intermittent driving pattern of which an intermittent cycle is shorter than that of the first intermittent driving pattern.

Abstract: Aspects of the disclosure provide an antenna array system. The antenna array system includes a plurality of antenna elements and phase-shift switching circuitry. The plurality of antenna elements are organized in an array and configured to form a non-planar shaped antenna array surface. Each of the plurality of antenna elements is switchable to one of a plurality of phase shift states. The phase-shift switching circuitry is configured to switch each of the plurality of antenna elements to one of the plurality of phase shift states based on phase control signals. In an example, the phase-shift switching circuitry switches a first set of antenna elements to a first phase shift state and switches at least a second set of antenna elements to a second phase shift state to steer an antenna beam in a direction.

Abstract: A receive-only smart antenna with a directional-point command capability for communication with geostationary satellites, allowing autonomous detection of received signals in order to allow steerage of multiple beams. An array feed is used to illuminate a parabolic reflector, with each feed element of the smart antenna associated with a unique beam-pointing direction. As the receiver switches to different feed elements, the far-field beam is scanned, making it possible to track a geostationary satellite in slightly inclined orbits, eliminating the need for mechanical tracking mechanisms while maintaining high antenna gain in the direction of the satellite. The receive-only smart antenna also features capabilities for forming multiple simultaneous beams supporting operations of multiple geo-satellites closely space in slightly inclined orbits. The designs can support orthogonal beams for enhanced bandwidth capacity via multiple beams with excellent spatial isolation.

Abstract: Exemplary embodiments are directed to beamforming. A device may include a plurality of mixers, wherein each mixer is configured to receive at least one of a quadrature signal and an in-phase signal. The device may further include at least one RF phase rotator coupled to an output of each of the plurality of mixers and configured for rotating an envelope of the at least one of the quadrature signal and the in-phase signal to generate at least one of a rotated in-phase signal and a rotated quadrature signal.

Abstract: Signals are maintained to be in phase at beam input ports of a Rotman lens antenna, and thus scanning at non-step antenna beam angles can be realized without increasing the number of input beams. The present invention provides an antenna beam scan module including: a Rotman lens that has plural beam ports and plural antenna ports; plural antenna elements; relative phase detectors that detect a relative phase difference between the signals input to the adjacent beam ports; phase shifters that offset the relative phase difference between the signals supplied to the adjacent beam ports on the basis of the relative phase difference detected by the relative phase detectors; and switches that select routes of the signals supplied to the beam ports through variable amplifiers, wherein the phase shifters are arranged on alternate routes through which the signals are supplied to the plural beam ports.

Abstract: An antenna array is formed by a network of transceivers that includes unit radios and a command radio. The command radio configures the antenna array and communicates with the unit radios to send and receive signals. The unit radios may form an antenna array with greater than half-wavelength spacing and the command radio receives signals from another radio through a unit radio receiving a best signal or from combined signals from several unit radios received from the other radio. The unit radios may form an antenna array having half wavelength or less spacing that forms a digital beam forming antenna with an antenna grid to which the unit radios are connected.

Abstract: An antenna is described. The antenna includes a planar circular structure. The antenna also includes a radiating element located at the center of the planar circular structure. The antenna further includes one or more parasitic elements located on a contour around the radiating element. The parasitic elements are aligned in parallel direction with the radiating element. The parasitic elements protrude from the planar circular structure. The antenna includes switches separating each of the one or more parasitic elements from ground. A switch in a first position creates a short between a parasitic element and ground. A switch in a second position creates an open circuit between the parasitic element and ground.

Abstract: The present invention concerns a method for the formation of a desired electromagnetic pulse by using an array of antennae in the time domain, and a relevant modular apparatus for the transmission of electromagnetic pulses, wherein each module is provided with means adapted to realize a programmed synchronization of the array.

Abstract: A lens-based switched beam antenna system including a beam-forming lens, and a beam port router coupled to the beam-forming lens, including a plurality of beam ports, and configured to transmit beams via corresponding ones of the beam ports, wherein a first group of the beam ports corresponds to a first signal, and wherein a second group of the beam ports corresponds to a second signal.

Abstract: A control vehicle for a road toll system on the basis of vehicle-mounted onboard units which can be polled via DSRC radio communications, with the control vehicle comprising at least one DRSC transceiver with at least two antenna systems, which are distributed with a mutual distance over the longitudinal direction of the control vehicle, for polling a passing on-board unit.

Abstract: An imaging system (1) comprises an antenna array (2), 24 GHz transceivers (3), and a digital receiver (4) including an ADC and circuits for filtering. The digital receives commands from the host PC (5) and passes data to the host PC (5) for display. The host PC 5 initiates volume scans, performs system diagnostics and error reporting, and collects scan data and displays it for the operator. The digital receiver (4) presents the scan requests to the antenna array (2) in a synchronised manner. All control signals in the antenna array are presented via a presentation clock (an individual presentation clock being generated for sub-sections of the array; of the order of five hundred presentation clocks are generated). The spectral content of each presentation clock is adjusted via a spreading circuit, thus adjusting the spectral interference radiated through the printed circuit board traces to the FET elements that each presentation clock feeds. The spreading clock generation circuit include taps (Tap 1, Tap 2 . .

Abstract: Methods, devices, and systems for controlling a beamforming antenna with reconfigurable parasitic elements is provided.

Abstract: A configurable antenna structure includes a plurality of switches, a plurality of antenna components, and a configuration module. The configuration module is operable to configure the plurality of switches and the plurality of antenna components into a first antenna for receiving a MFBMS signal. The configuration module continues processing by identify a signal component of interest of a plurality of signal components of interest within the MFBMS signal. The configuration module continues processing by configuring the plurality of switches and the plurality of antenna components into a second antenna.

Abstract: A monostatic multibeam radar sensor device for a motor vehicle, including a directional characteristic of an antenna unit having at least one transceiving channel and at least one receiving channel, and including a mixer system, which has an at least approximately isolating mixer for at least one of the receiving channels. The at least approximately isolating mixer includes a Gilbert cell mixer, which, due to a non-ideal isolation between an input of the local oscillator signal and the corresponding receiving channel, emits a transmission power via this receiving channel, using an overcoupling signal, the transmission power influencing the directional characteristic of the antenna unit and the directional characteristic being switchable by controlling the phase position of the overcoupling signal.

Abstract: A dual monopulse/interferometer antenna and radar system. In one example, the antenna includes an active electronically steered monopulse array, and is configurable into an interferometer mode which uses a subset of the array elements of each quadrant of the monopulse array. In one example, the RF feed network that combines signals received from each element in the array to produce monopulse return signals is modified in the interferometer mode to couple out the subset of array elements to produce return signals that are analyzed using interferometric processing.

Abstract: A switched beam smart antenna apparatus is disclosed including: a first, a second, a third, and a fourth beam adjusting elements substantially perpendicular to a substrate; a radiation strip positioned within an area surrounded by the first to fourth beam adjusting elements and substantially perpendicular to the substrate; a first beam control module positioned between the first beam adjusting element and the substrate; a second beam control module positioned between the second beam adjusting element and the substrate; a third beam control module positioned between the third beam adjusting element and the substrate; and a fourth beam control module positioned between the fourth beam adjusting element and the substrate. When the first beam control module turns on the first beam adjusting element, at least one of the second through the fourth beam control modules turns off corresponding beam adjusting element.

Abstract: Disclosed is an electronic scanning array antenna which can be used as a UWB radar having an occupied band of not less than 500 MHz. An impulse generator is connected to each of a plurality of antenna elements constituting the electronic scanning array antenna, and a transmission trigger time to each of the impulse generators connected to the antenna elements is changed, whereby the phase of radio waves emitted from an antenna is equivalently changed. Moreover, a transmission trigger repletion interval is changed to thereby control a direction of a beam emitted from the array antenna. As means of changing a transmission trigger timing to each of the impulse generators connected to the antenna elements, a method of changing a frequency of a transmission trigger pulse and a method of changing a pulse position are adopted.

Abstract: A method and system for beamforming communication in high throughput wireless communications. Analog beamforming involves constructing analog beamforming coefficients for beamforming communication on a wireless channel. Constructing analog beamforming coefficients includes selecting a signal tap from a multi-tap wireless channel for beamforming communication, wherein the selected signal tap has a higher signal quality relative to other signals taps, and determining beamforming coefficients for the selected tap by iterative acquisition of the coefficients based on power iteration.

Abstract: A system, methods, and apparatus for dual antenna transfer switching are disclosed. In an example embodiment, a dual antenna system includes antennas, antenna control units, a transfer switch, and a modem. For example, the transfer switch may transfer a connection between antennas based on changing satellite visibility, upon entering a preprogrammed blockage zone or an unexpected loss of satellite visibility. The transfer switch may receive GPS data from an external GPS unit and/or the antenna control units and buffer the GPS data to a modem. The transfer switch may provide a modem receive-lock signal to retarget a line of sight. The transfer switch may transfer the connection between the antennas based on satellite visibility including signal reception quality and/or a modem receive-lock status. The transfer switch may, based on a difference in antenna uplink transmission power, attenuate a higher power antenna to be balanced with a lower power antenna.

Abstract: According to one embodiment, an antenna apparatus includes first and second antenna arrays configured in a support structure. Each antenna array has multiple antenna elements that transmit and/or receive electro-magnetic radiation. The elements of the first antenna array are oriented in a boresight direction that is different from the boresight direction in which the elements of the second antenna array are oriented. A plurality of switches alternatively couples the first antenna elements or the second antenna elements to a signal distribution circuit.

Abstract: A switched beam smart antenna apparatus is disclosed including: a first, a second, a third, a fourth, a fifth, a sixth, a seventh, and an eighth beam adjusting elements; a first, a second, a third, and a fourth beam control modules; a first, a second, a third, and a fourth radiation strips positioned within an area surrounded by the first to eighth beam adjusting elements; and a radiation strip control module for selecting either the first and second radiation strips or the third and fourth radiation strips to transmit signals. When the first beam control module conducts the first and second beam adjusting elements, the third beam control module does not conduct the fifth and sixth beam adjusting elements. When the second beam control module conducts the third and fourth beam adjusting elements, the fourth beam control module does not conduct the seventh and eighth beam adjusting elements.

Abstract: A phased array antenna system includes a first radiation element that is made of a material and has a length selected to resonate at a desired frequency. A phase-shift element is coupled to one end of the first radiation element. A second radiation element is coupled to the end of the phase-shift element opposite the first radiation element, so that a radio signal passes through the first radiation element through the phase-shift element and through the second radiation element, the second radiation element is made of a material and has a length selected to resonate such that the first and second radiation elements cooperate to form a desired beam pattern from the antenna system.

Abstract: A self-structuring antenna system comprises a plurality of antenna elements, a plurality of switch elements arranged with the antenna elements to, when selectively closed, electrically couple ones of the antenna elements to one another, and a switch controller for opening and closing the switch elements. The switch controller is operatively associated with the plurality of switch elements via a plurality of addressable switch controllers.

Abstract: A front end circuit for selectively coupling a first antenna and a second antenna to a transmit chain and a receive chain of a radio frequency (RF) transceiver is disclosed. There is a first power amplifier having an input connectible to the transmit chain of the RF transceiver, a first low noise amplifier having an output connectible to the receive chain of the RF transceiver, and a second low noise amplifier with an input connectible to the second antenna, as well as an output connectible to the receive chain of the RF transceiver. A first matching and switch network is connected to the first antenna, the output of the first power amplifier, and the input of the first low noise amplifier. Transmit signals from the first power amplifier and receive signals from the first antenna are selectively passed to the first antenna and the first low noise amplifier.

Abstract: According to one embodiment, an apparatus for beamforming includes a detector for measuring at least one change of movement and rotation of an apparatus; and a calculator for determining a beamforming parameter for aligning a beam direction with another apparatus by compensating for the change of the beam direction according to at least one of the movement and the rotation.

Abstract: A phased array antenna is disclosed where the transmit/receive modules are replaced by a series of separately packaged components. The components include, for example, a vector control component, a high power amplifier component, a low noise amplifier component, a transmit/receive duplexing component and ancillary supporting components. An advantage of this arrangement is that cheaper antenna arrays can be constructed without limiting the capability and/or performance of a system incorporating such an array when compared to known solutions.

Abstract: An electronically scanned array (ESA) system comprises a first ESA assembly including a first antenna system coupled to a first plurality of transmit/receive modules and a second ESA assembly including a second antenna system coupled to a second plurality of transmit/receive modules. The ESA system also includes a manifold system coupled to the first and second ESA assemblies. The manifold system including an RF signal processing system for processing signals received from the first and second ESA assemblies.

Abstract: An active antenna with a wide bandwidth coverage is disclosed. The active antenna comprises a radiator, comprising at least two feeding points corresponding to two modes, a switch control circuit, for generating a switch control signal, and an active switch circuit, for switching to be coupled to one of the at least two feeding points.

Abstract: Embodiments of the invention describe a method for antenna selection (AS) in a wireless communication network, the network comprising user equipment (UE), wherein the UE comprises a plurality of subsets of antennas including a first subset of antennas and a second subset of antennas, and wherein the UE is configured to transmit a sounding reference signal (SRS) from a subset of antennas at a time. The method transmits a first SRS from the first subset of antennas, transmits a second SRS from the second subset of antennas, receives, in response to the transmitting the first SRS and the second SRS, information identifying an optimal subset of antennas from the first subset of antennas and the second subset of antennas, and transmits user data from the optimal subset of antennas.

Abstract: A compact, high gain 8-element circular smart antenna is able to scan a beam azimuthally through 360°. The 8-element array is placed on a ground skirt and connected to an 8-channel beamforning board via a transfer plate. Each channel has two T/R switches, one band pass filer, one power amplifier, two low noise amplifiers, one phase shifter, and one attenuator. The 8-channel-signal is combined through power splitters/combiners and then sent to a connected radio. An FPGA chip controls the digital phase shifters, attenuators and switches for signal searching, beamforming and tracking. The smart antenna can be operated as a compact switched beam system or with an additional processor as an adaptive array system. The smart antenna is capable of tracking mobile targets, directionally communicating with desired users, suppressing interference and jamming, and enabling long range communications with high throughput and reliable connection because of its high antenna gain.

Abstract: A phase-arrayed device includes: a signal processing circuit arranged to generate a specific signal; a first phase-arrayed channel arranged to provide a first phase-arrayed signal according to the specific signal; a first conducting path arranged to conduct the specific signal to the first phase-arrayed channel; a second conducting path arranged to conduct the first phase-arrayed signal to the signal processing circuit; and a detecting circuit, arranged to detect a mismatch between the first phase-arrayed signal and a reference signal to generate a detecting signal utilized for calibrating the first phase-arrayed signal.

Abstract: A method and apparatus for increasing capacity and performance of a base station for a sectorized cellular wireless network is disclosed in which one of the sector antennas is replaced or supplanted by a novel sub-sector antenna that generates a plurality of asymmetrical sub-sector coverage areas that collectively substantially cover the coverage area of the replaced sector antenna. The use of asymmetrical coverage areas permits the total coverage area to closely approximate the symmetrical sector coverage area without creating excessively large sub-sector handover zones or introducing severe degradation in the network performance. This in turn permits the selective replacement of a single sector antenna rather than the wholesale replacement of all sector antennas in a region, leading to lower transitional costs and the ability to provide a focused approach to capacity planning.

Abstract: Embodiments of the invention provide a system and method to improve the performance of a GNSS receiver using antenna switching. The system has a plurality of antennas and at least one radio frequency RF chain. There are fewer RF chain(s) than antennas. A receiver processes a plurality of signals sent by a plurality of transmitters. The system also includes antenna switches and switch controller. The method includes processing signals from a plurality of satellite vehicles SVs using an antenna selected from a plurality of antennas.

Abstract: An on-board multibeam radar apparatus includes a plurality of beam elements that constitute an antenna transmitting a transmission wave and receiving an incoming wave being reflected and arriving from a target in response to the transmission wave, a control unit configured to select a beam element used for transmission and reception out of the plurality of beam elements so as to change a field of view, and a processing unit configured to apply a Fourier transformation to beam element data which are data of a received wave received through the beam element used for transmission and reception selected by the control unit based on the number of elements and the element interval of a desired virtual array antenna so as to create virtual array data, and to perform a predetermined process based on the created virtual array data.

Abstract: Embodiments of the present invention relate to a vehicle transponder comprising an antenna and a power directing means, the power directing means having a first port, a second port and a third port. In various embodiments, the power directing means is arranged to direct power from the first port to the second port and/or the third port. The transponder further comprises a modulator, which comprises a first port, a second port and a third port, where the second port of the power directing means is connected to the first port of the modulator.

Abstract: In one embodiment, an active array antenna device includes: M (M?2) bandpass filters to filter signals received by M antenna elements; M low noise amplifiers to amplify the filtered received signals; M distributors to distribute respective of the M amplified signals into N (N?2) distributed signals; M sets of N phase shifters provided for respective of the M distributors to shift phases of the N distributed signals; M sets of N attenuators to attenuate N phase-shift signals; N beam synthesis circuits provided for N sets of the M attenuators to synthesize a beam by summing attenuator outputs from the M attenuators corresponding to the M distributors; a heat insulating container accommodating the low noise amplifiers and the receiving filters and formed of a superconductor material; and a cooler to cool the receiving filters and the low noise amplifiers to make the receiving filters in a superconducting state.

Abstract: An antenna beam scan unit includes: a Rotman lens that performs power division and synthesis between plural antenna ports and three or more beam ports; plural antenna elements which are connected to the respective antenna ports and to or from which radio waves are inputted or outputted; plural amplifiers that are connected to the respective beam ports of the Rotman lens and perform amplitude modulation on a signal; input paths for a transmission signal disposed in association with the amplifiers; switches for switching the input paths; and a beam control unit. The input paths include first paths and second paths on which a signal that is out of phase with a signal on the first paths is produced. The beam control unit selects two adjoining beam ports, and can switch the first paths and second paths as the input paths for the two beam ports.