Abstract: Methods and systems are described for providing end-to-end beamforming. For example, end-to-end beamforming systems include end-to-end relays and ground networks to provide communications to user terminals located in user beam coverage areas. The ground segment can include geographically distributed access nodes and a central processing system. Return uplink signals, transmitted from the user terminals, have multipath induced by a plurality of receive/transmit signal paths in the end to end relay and are relayed to the ground network. The ground network, using beamformers, recovers user data streams transmitted by the user terminals from return downlink signals. The ground network, using beamformers generates forward uplink signals from appropriately weighted combinations of user data streams that, after relay by the end-end-end relay, produce forward downlink signals that combine to form user beams.

Abstract: Disclosed is a cross loop antenna system for an aerial vehicle. In one embodiment, the cross loop antenna system includes a cross bar antenna and a ground plane. The cross bar antenna includes two thin coplanar perpendicular bars that intersect in the middle and are parallel to the ground plane. Each bar couples to the ground plane at each end, comprising an antenna loop. Thus, the cross loop antenna system comprises two intersecting single-fed loops. The antenna can operate at a wavelength that is approximately twice the length of the bars. In such an embodiment, the antenna system may be resonant. The distance between the bars and the ground plane may be relatively small, thus minimalizing the vertical profile of the antenna. The antenna may be operated as a dual-band antenna and may produce an omnidirectional radiation pattern. An aerial vehicle may include two such antennas.

Abstract: Methods and systems are described for providing end-to-end beamforming. For example, end-to-end beamforming systems include end-to-end relays and ground networks to provide communications to user terminals located in user beam coverage areas. The ground segment can include geographically distributed access nodes and a central processing system. Return uplink signals, transmitted from the user terminals, have multipath induced by a plurality of receive/transmit signal paths in the end to end relay and are relayed to the ground network. The ground network, using beamformers, recovers user data streams transmitted by the user terminals from return downlink signals. The ground network, using beamformers generates forward uplink signals from appropriately weighted combinations of user data streams that, after relay by the end-end-end relay, produce forward downlink signals that combine to form user beams.

Abstract: A system and method for hybrid beamforming diversity includes a method by a UE with one or more receive antenna ports, each of the receive antenna ports associated with a plurality of receive beam ports, the method comprising receiving, by the UE, information from a network indicating configurations of one or more transmit antenna ports, each of the transmit antenna ports associated with a plurality of transmit beam ports, the information further indicating a plurality of reference signals, receiving, by the UE, a subset of the reference signals, measuring, by the UE, receive signal quality for each of the subset of the reference signals, determining, by the UE, a selected receive beam port for each of the receive antenna ports, deriving, by the UE, one or more reporting sets, transmitting, by the UE, the one or more reporting sets to the network, and receiving, by the UE, a data transmission.

Abstract: Embodiments of the present invention provide a beam forming network, including: a first 180-degree bridge for equal-power division, a 180-degree bridge for unequal-power division, a 90-degree phase shifter, and a second 180-degree bridge for equal-power division. A coupling port of a sum input port of the first 180-degree bridge for equal-power division is connected to a difference input port of the 180-degree bridge for unequal-power division, a straight-through port of the sum input port of the first 180-degree bridge for equal-power division is connected to an input port of the 90-degree phase shifter, an output port of the 90-degree phase shifter is connected to a difference input port of the second 180-degree bridge for equal-power division, and a straight-through port of a sum input port of the 180-degree bridge for unequal-power division is connected to a sum input port of the second 180-degree bridge for equal-power division.

Abstract: A radar system includes an independent multibeam antenna which outputs at least one reception signal in response to at least one arriving wave, and a signal processing circuit in which a learned neural network has been established. The signal processing circuit receives the at least one reception signal, inputs the at least one reception signal or a secondary signal generated from the at least one reception signal to the neural network, performs computation by using the at least one reception signal or secondary signal and learned data of the neural network, and outputs a signal indicating the number of at least one arriving wave from the neural network.

Abstract: An optical demultiplexer that includes at least one a hybrid phase shifter configured to receive a light signal over a fiber element, the light signal including polarized optical signals. Each phase shifter includes a thermo-optic phase shifter configured to phase shift the light signal, an electro-optic phase shifter configured to phase shift the light signal, and a coupler configured to maintain polarization of the polarized signal components. The optical demultiplexer also includes control circuitry configured to regulate the thermo-optic and electro-optic phase shifters.

Abstract: Various embodiments are described that relate to a radiating element and an engineered magnetic material. In a communication environment a radiating element can be used to communicate information, such as to send signals. Various factors, including electromagnetic factors, can influence the performance of the radiating element. In one example, if the radiating element becomes too close to a ground plane, then performance of the radiating element can suffer. To counter negative effects of being too close to the ground plane an engineered magnetic material can be employed that causes the radiating element to perform better when relatively close to the ground plane.

Abstract: Methods and systems are described for providing end-to-end beamforming. For example, end-to-end beamforming systems include end-to-end relays and ground networks to provide communications to user terminals located in user beam coverage areas. The ground segment can include geographically distributed access nodes and a central processing system. Return uplink signals, transmitted from the user terminals, have multipath induced by a plurality of receive/transmit signal paths in the end to end relay and are relayed to the ground network. The ground network, using beamformers, recovers user data streams transmitted by the user terminals from return downlink signals. The ground network, using beamformers generates forward uplink signals from appropriately weighted combinations of user data streams that, after relay by the end-end-end relay, produce forward downlink signals that combine to form user beams.

Abstract: A radar device includes: an aperture surface including element antennas and phase shifters; an antenna phase control unit for calculating phase amounts based on a beam orientation direction and a rotation angle of the aperture surface; an antenna driving control unit for setting a rotation angle to a rotation mechanism; a signal processing unit for detecting a target with the use of the radar receiver, setting at least one of the rotation angle of the aperture surface or the beam orientation direction in the antenna driving control unit and the antenna phase control unit, and calculating the level of competing cluttering with the use of an antenna pattern, to thereby determine propriety of the rotation angle; and a pattern calculating unit for calculating the antenna pattern from the rotation angle of the aperture surface and from the beam orientation direction.

Abstract: In one implementation, load balancing within a constellation of communications satellites is performed. Anticipated positions of satellites are determined. Each satellite is configured to provide multiple beams that define a coverage footprint for the satellite. Based on the anticipated positions of the satellites, it is determined that a first coverage footprint for a first satellite provides primary coverage of a high traffic region and portions of the first coverage footprint for the first satellite also will be covered by coverage footprints for other satellites, Based on these determinations, a beam assignments are defined in which a first subset of beams of the first satellite configured to provide coverage of a first portion of the first coverage footprint are inactive and a second subset of beams of the second satellite are active. The second subset of beams of the second satellite provide coverage within the first portion of the first coverage footprint.

Abstract: Disclosed is a method for implementing antenna modularization, comprising: dividing components of an antenna, forming antenna modules by the divided components, and setting types of the antenna modules. Also disclosed are a device for implementing antenna modularization and antenna modules.

Abstract: Various embodiments presented herein relate to determining mutual coupling between a pair of antennas in an array antenna. Various operations presented herein enable comparison between a magnitude and phase of a signal transmitted from a first feed network (via a first antenna) and a magnitude and phase of a portion of the signal received at a second feed network (via a second antenna). Electrical effects engendered by any of the first feed network, a first switch, a first local circuit, the second feed network, a second switch, and a second local circuit can also be determined and their effects mathematically removed. Based upon the foregoing, a mutual coupling between the pair of antenna is determined.

Abstract: A method of operating an antenna system for a wireless device is provided for controlling radiation characteristics of the antenna system. The antenna system includes first and second sets of feed points disposed so that first and second radiation pattern are generated by the antenna system when drive currents are provided at the first and second set of feed points, respectively. The second radiation pattern is different from the first radiation pattern. The first and second drive currents are supplied such that a predetermined overall radiation pattern is generated. The predetermined overall radiation pattern is at least in part a combination of the first radiation pattern and the second radiation pattern. The system and method may be directed toward Specific Absorption of Radiation (SAR) mitigation.

Abstract: An enhanced Node B (eNB) for precoding is generally described. In some embodiments, a first precoding-matrix indicator (PMI) and a second PMI is received on an uplink channel from user equipment (UE). Symbols for multiple-input multiple output (MIMO) beamforming may be precoded by the eNB using a precoder matrix recommended by the first and second PMIs, for a MIMO downlink orthogonal frequency division multiple access (OFDMA) transmission. The first PMI and the second PMI are calculated by selecting a representative codeword that is indexed by i1 and i2 for a plurality of 2TX constituent beams, the 2TX constituent beam that provides the best system evaluation metric. The i1 index for wideband and the i2 index for each subband are identified from the defined 2TX constituent beam.

Abstract: Systems and methods for partitioned phased array fed (PAFR) antennas are disclosed. The phased array in a PPAFR antenna is partitioned into multiple partitions of antenna elements that can be operated by corresponding beam forming networks configured to independently and simultaneously generate angularly offset static and dynamic spot beams patterns. The generated spot beam patterns can include transmission and receiving spot beams for establishing a number of pathways.

Abstract: An antenna module suited for a portable electronic device is provided. The antenna module includes a heat dissipation unit, a first antenna and a second antenna. The heat dissipation unit contacts a heat source of the portable electronic device. The first antenna and the second antenna are disposed at different side portions of the heat dissipation unit. The heat dissipation unit has a slot with at least one bending portion. An orthogonal projection of at least one of the first antenna and the second antenna on a projection plane of the heat dissipation unit is partly overlapped with an orthogonal projection of the slot on the projection plane.

Abstract: Systems and methods for using spatial multiplexing in conjunction with a multi-conductor cable deployed in-house. Input streams associated with spatial multiplexing are converted into respective signals occupying different respective frequencies. The signals are transported, via a multi-conductor cable deployed in-house, into a certain room located in-house, thereby enabling a presence of the plurality of signals in the certain room. The signals are shifted into respective output signals that occupy a single wireless frequency by up-converting each signal from the corresponding different frequency into the single wireless frequency. The output signals are transmitted wirelessly, using only the single wireless frequency, via respective antennas located in the certain room, all said antennas operating in conjunction with the single wireless frequency, thereby achieving spatial multiplexing in the certain room and in conjunction with the multi-conductor cable.

Abstract: An antenna device is disclosed, including a control means and at least two transmission means in predeterminable positions and at least two receiving means in predeterminable positions. The control means is set up in such a way that it alternately individually excites the at least two transmission means in transmission, in such a way that each of the at least two receiving means receives a transmitted signal generated by each of the at least two transmission means. The control means is further set up to excite the at least two transmission means jointly in transmission at a predeterminable moment in such a way that each of the at least two receiving means receives a transmission signal generated by a single virtual transmission means.

Abstract: A first communication device receives, from a second communication device via a communication channel, a plurality of training signals. The first communication device determines, based on the plurality of training signals, a plurality of channel matrices corresponding to a plurality of orthogonal frequency division multiplexing (OFDM) tones. The first communication device generates, based on the plurality of channel matrices, feedback information for the plurality of OFDM tones, the feedback information including (i) steering matrix information for the plurality of OFDM tones and (ii) additional phase information corresponding to the plurality of channel matrices for the plurality of OFDM tones, the additional phase information for reducing phase discontinuity across the OFDM tones in steered transmissions that are to be subsequently transmitted from the second communication device to the first communication device.

Abstract: A feed system for controlling the variable electrical tilt in the vertical plane of arrayed radiating elements of a multiband antenna, comprising a Butler matrix with N inputs and N outputs comprising hybrid couplers, each input receiving a radio signal and each output transmitting the signal to at least one radiating element. At least one output of the Butler matrix is connected to a module comprising (i) a first stage of diplexers that separates the signal into different frequency bands, (ii) a second stage of fixed delay lines that applies a given electrical delay to the signal in each frequency band, (iii) a third stage of variable phase shifters that introduce an adjusted phase shift of the signal into each frequency band, and (iv) a fourth stage of diplexers that combines the signals into the different frequency bands in order to transmit them to at least one radiating element.

Abstract: Methods and systems are described for providing end-to-end beamforming. For example, end-to-end beamforming systems include end-to-end relays and ground networks to provide communications to user terminals located in user beam coverage areas. The ground segment can include geographically distributed access nodes and a central processing system. Return uplink signals, transmitted from the user terminals, have multipath induced by a plurality of receive/transmit signal paths in the end to end relay and are relayed to the ground network. The ground network, using beamformers, recovers user data streams transmitted by the user terminals from return downlink signals. The ground network, using beamformers generates forward uplink signals from appropriately weighted combinations of user data streams that, after relay by the end-end-end relay, produce forward downlink signals that combine to form user beams.

Abstract: A far-field antenna characterization system for characterizing a far-field antenna pattern of a target antenna. An unmanned aircraft system (“UAS”) with a flight control system receives preprogrammed flight instructions for maneuvering the UAS within the far-field antenna pattern of the target antenna. A sensing antenna mounted to the UAS senses the far-field antenna pattern of the target antenna. A power measurement sensor provides a power level signal indicative thereof. A position measurement sensor provides a position signal for the UAS. The data logger associates the power level signal with the position signal at multiple measurement points to create a power density pattern for the far-field antenna pattern.

Abstract: The various technologies presented herein relate to mitigating or reducing sidelobe levels during operation of an antenna array. Power coefficients operating across an antenna array are tapered to facilitate a power concentration at central region of the antenna array while power coefficients of a lower magnitude are generated at the periphery of the antenna array. Power coefficient variation can be effected by at least one of electrical path length, number of antennas being powered in a particular antenna subarray, a number of T-splitters incorporated into an electrical path servicing an antenna, etc. Electrical coupling of a pre-T/R stripline and a post-T/R stripline can be achieved in conjunction with operation with a dielectric layer, wherein the dielectric layer acts as a dielectric at the Ku frequency band. Further, phase delay can be applied to at least one electrical signal to facilitate concurrent delivery of power across the antenna array.

Abstract: A multi-beam module and method of performing an adaptive beam sweep in a multi-beam module of a vehicle includes obtaining information about the vehicle. The information relates to a motion state of the vehicle. The method also includes determining whether a sector sweep by the multi-beam module should be a limited sector sweep that covers less than a 360 degree span collectively based on applying a rule to the information about the vehicle, and performing the limited sector sweep with beams that cover less than the 360 degree span collectively based on determining that the sector sweep should be the limited sector sweep.

Abstract: Systems and techniques for carrier aggregated beamforming using elevation control. A base station determines a first elevation to be used for transmission to a user device using a first carrier, for example, based on information received from the user device. A second elevation, for transmission to the user device based on the second carrier, is determined based at least in part on the elevation information determined for the first carrier. The first and second carriers may be used by the same base station or by different base stations, and using elevation information determined for the first carrier to determine elevation information for the second carrier avoids computation and signaling needed for separate determination of the elevation information for the second carrier.

Abstract: The present invention relates to a channel state information (CSI) feedback method and apparatus in a large-quantity antenna system. An embodiment provides a method used in a UE of a large scale antenna system, including: detecting a downlink channel; determining, according to a multipath propagation model, a channel response of a first number of strong propagation paths, where the channel response of each propagation path is determined as a matrix related to the following time-varying parameters: an arrival direction, time to arrive, and a path amplitude; and feeding back the first number and indication information of the time-varying parameters of the first number of strong propagation paths. By using the sparsity of channels of the large-quantity antenna system, the present invention reduces a feedback payload and maintains at least equal system performance.

Abstract: This disclosure describes methods, apparatus, and systems related to providing a source device more degrees of freedom in the performing CCA, and in using CCA for communicating with neighboring devices. Before accessing the channel, a source device may need to perform carrier sense multiple access with collision avoidance (CSMA/CA), the CSMA/CA additionally comprising CCA. In various embodiments, CCA can be performed either using quasi-omnidirectional receiving antenna(s), or using directional receiving antenna(s). In one embodiment, one or more requisite conditions for performing directional CCA can be specified. In another aspect, sensitivity level adjustments can be provided when performing directional CCA and/or quasi-omnidirectional CCA.

Abstract: A beamforming system includes a plurality of channelizers and a channel switching module in signal communication with the channelizers. Each channelizer is configured to receive a respective input radio frequency signal and to generate a plurality of respective channels in response to downsampling the respective input radio frequency signal. The channel switching module includes a channel combining circuit configured to selectively combine a common channel generated by each channelizer to form at least one steered analog beam.

Abstract: An antenna arrangement comprising an even number E>3 of antenna elements 210, 210?, connected to steerable phase shifters 211, and a number C=(E/2)*(E/2+1)/2 of hybrid couplers 212, as well as a number of E antenna arrangement ports 213 configured as an interface to the antenna arrangement. Hybrid coupler ports of a bottommost tier 218 of hybrid couplers 212 are connected to respective antenna arrangement ports 213, and hybrid couplers in an overlaying at least one tier 219 are connected to hybrid couplers in a tier immediately below. Unconnected hybrid coupler ports are connected directly to the first antenna element 210? or to one of the other antenna elements 210.

Abstract: The present disclosure provides a hybrid beamforming transmission method and a network device. The hybrid beamforming transmission method includes steps of: determining, by a network device, a digital-domain beamforming weight matrix for a first UE in accordance with a channel measurement result; determining, by the network device, a set of beamforming weight matrices in accordance with the digital-domain beamforming weight matrix, and transmitting a signal to the first UE in an analog beamforming manner; selecting, by the network device, a beamforming weight matrix from the set of beamforming weight matrices in accordance with a measurement result from the first UE, as an analog-domain beamforming weight matrix for the first UE; and performing, by the network device, hybrid beamforming transmission in accordance with the determined digital-domain beamforming weight matrix and the selected analog-domain beamforming weight matrix.

Abstract: A dynamically allocated broadband multi-tap antenna comprises a plurality of sub-wavelength conductors used for transmitting and/or receiving radio frequency (RF) signals; a plurality of antenna taps, each of which is connected to one or more of the conductors; a plurality of RF switches, each of which is connected to one of the antenna taps; and a plurality of combiners (which also function as splitters), each of which is connected to one or more of the RF switches. The RF switches are controlled to dynamically allocate and interconnect the antenna taps with a selected combiner, to communicate the RF signals between the conductors connected to the antenna taps and the selected combiner. The RF signals received by the conductors are combined into an output signal at the selected combiner, while an input signal at the selected combiner is split for transmission as the RF signals by the conductors.

Abstract: Systems, methods, and apparatus for a wearable device to make a link with a communication system are disclosed. In one or more embodiments, a disclosed method for a wearable device to make a link with a communication system comprises transmitting, by the communication system, at least one first signal. The method further comprises receiving, by each of at least two antennas of the wearable device, at least one first signal from the communication system. In one or more embodiments, each of at least two antennas is adaptively excited to steer in a direction towards the communication system and/or steer in a direction to null at least one interferer. Also, the method involves transmitting, by each of at least two antennas of the wearable device, at least one second signal towards the communication system. Further, the method involves receiving, by the communication system, at least one second signal.

Abstract: Examples are disclosed herein that relate to depth imaging techniques using ultrasound One example provides an ultrasonic depth sensing system configured to, for an image frame, emit an ultrasonic pulse from each of a plurality of transducers, receive a reflection of each ultrasonic pulse at a microphone array, perform transmit beamforming and also receive beamforming computationally after receiving the reflections, form a depth image, and output the depth image for the image frame.

Abstract: A receiver system comprising: an input terminal configured to receive input signalling comprising a plurality of antenna-signals, wherein the plurality of antenna-signals each comprise information that corresponds to a first-frequency-bin and a second-frequency-bin. AoA-blocks can determine a first-angle-of-arrival and a second-angle-of-arrival associated with the first- and second-frequency-bins. A first-weighting-determination-block configured to, based on the first-angle-of-arrival and the second-angle-of-arrival, either: set first-weighting-values as values for constructively combining the information that corresponds to the first-frequency-bins of the plurality of antenna-signals; or set first-weighting-values as values for destructively combining the information that corresponds to the first-frequency-bins of the plurality of antenna-signals.

Abstract: A beamforming method and a beamforming apparatus for directional signal transmission are provided, wherein a multiple antenna beamformer is configured to conduct a data transmission to a beamformee.

Abstract: Certain aspects are directed to a capacity optimization sub-system for a distributed antenna system. The capacity optimization sub-system includes a switch matrix and a controller. The switch matrix includes variable attenuators and switches. The switch matrix can receive sectors from base stations. The switch matrix can provide the sectors to coverage zones. The controller can communicate with the switch matrix. The controller can determine that a number of wireless devices in one or more of the coverage zones is outside a specified range of threshold traffic levels. In response to determining that the number of wireless devices is outside the specified range of threshold traffic levels, the controller can configure one or more of the variable attenuators and corresponding switches to redistribute capacity among the coverage zones by, for example, increasing and/or decreasing capacity in one or more of the coverage zones.

Abstract: A multi-input receiver including a plurality of RF antennas, a multi-channel receiver, an input port configuration block (IPCB), and a configuration block controller. The IPCB includes at least two two-way connection modules, at least one four-way connection module, at least one direct connection module, and a plurality of electronic signal pathways. Each connection module includes a connection module input port communicatively coupled to an RF antenna of the plurality of RF antennas, a connection module output port communicatively coupled to a channel of the multi-channel receiver, and a mechanical diversion switch. The mechanical diversion switches and the plurality of electronic signal pathways are positioned and configured such that the mechanical diversion switch of each connection module communicatively couples a splitter bypass signal, a 1×2 signal, or a 1×4 signal to the connection module output port on a selective basis.

Abstract: Embodiments of the present invention provide a method for communication through a distributed antenna array system and an array system. The antenna array system includes a number of antenna units, a baseband resource pool, a radio frequency resource pool, and a controller. The controller is configured to monitor a signal state of a user equipment under a coverage area of a macrocell, to determine an antenna unit that provides a service to the user equipment, and, according to a capability of the user equipment, determine whether to perform coordinated transmission of a plurality of antennas and a corresponding transmission mode for the user equipment, and then to configure an antenna resource for the user equipment, so that the baseband resource pool and the radio frequency resource pool control the configured antenna resource to provide a communication service for the user equipment.

Abstract: An antenna array comprising at least three radiating elements arranged in sequence, wherein alternate radiating elements have feeds configured for direct feeding from output ports of corresponding radio frequency transmitters, and wherein each radiating element situated between a pair of directly-connected elements has a feed coupled to the feeds of the adjacent directly-fed elements.

Abstract: Embodiments of a system for a multi-sector base station in a cellular communications network are disclosed. In one embodiment, the system includes an integrated unit, where the integrated unit includes multiple antennas and a radio unit (RU) coupled to the antennas. By integrating the multiple antennas and the radio RU into a single integrated unit, the system can, in some embodiments, reduce installation and operating costs of the multi-sector base station.

Abstract: A method for transmitting a reference signal for supporting a plurality of antennas to a User Equipment (UE) at a Base Station (BS) in a wireless communication system is disclosed. The method includes grouping the plurality of antennas into antenna groups comprising a predetermined number of antenna ports, transmitting resource information about a reference signal for at least one antenna group of the antenna groups, and transmitting the reference signal for the at least one antenna group to the UE based on the resource information.

Abstract: An antenna device is disclosed including a control means and at least two transmission means in predeterminable positions and at least two receiving means in predeterminable positions. The control means is set up in such a way that it alternately individually excites the at least two transmission means in transmission, in such a way that each of the at least two receiving means receives a transmitted signal generated by each of the at least two transmission means. The control means is further set up to excite the at least two transmission means jointly in transmission at a predeterminable moment in such a way that each of the at least two receiving means receives a transmission signal generated by a single virtual transmission means.

Abstract: Provided are a mobile communication system, a digital unit, and a method of establishing a joint transmission area in the system. When the digital unit determines that a terminal is located in a joint transmission area based on signal strength values received from two of radio units and transmission powers of the two radio units, the digital unit adjusts the joint transmission area depending on the load on the network including the two radio units belong in order to allow the two radio units to perform a joint transmission function to send at least one of the same signal and a spatiotemporally coded signal of the same data to the terminal.

Abstract: A system for determining real time location of leaf node device, the system including at least one battery-powered Bluetooth Low Energy (BLE) enabled leaf node device, wherein the at least one leaf node device is associated with a corresponding monitored asset; and at least one beam forming reader node in communication, via BLE, with the at least one leaf node, the reader node creating a plurality of sectorized beams in a plurality of sectors and collecting data related to the at least one leaf node device from at least one of the plurality of sectors, wherein a location processing facility determines the real-time location of the at least one leaf node device based on the data collected by the beam forming reader node.

Abstract: A low sidelobe beam forming method and dual-beam antenna schematic are disclosed, which may preferably be used for 3-sector and 6-sector cellular communication system. Complete antenna combines 2-, 3- or -4 columns dual-beam sub-arrays (modules) with improved beam-forming network (BFN). The modules may be used as part of an array, or as an independent 2-beam antenna. By integrating different types of modules to form a complete array, the present invention provides an improved dual-beam antenna with improved azimuth sidelobe suppression in a wide frequency band of operation, with improved coverage of a desired cellular sector and with less interference being created with other cells. Advantageously, a better cell efficiency is realized with up to 95% of the radiated power being directed in a desired cellular sector.

Abstract: A method including determining that a first radio frequency (RF) port has been selected to be coupled via an M by N RF switch matrix to a second RF port, wherein the M by N radio frequency (RF) switch matrix includes M first-side RF ports and N second-side RF ports, the first RF port is included in the M first-side RF ports, the second RF port is included in the N second-side RF ports, M is at least 2 and N is at least 2, and each of the first-side RF ports may be selectively coupled to and uncoupled from at least one of two or more of the second-side RF ports, such that RF signals are carried between selectively coupled RF ports; obtaining a first indicator indicating a frequency, frequency range, channel, or band for an RF signal to be carried via the second RF port while coupled to the first RF port; obtaining, in response to the determination that the first RF port has been selected to be coupled to the second RF port, a first adjustment value based on the first indicator, the first RF port, and the secon

Abstract: A method and apparatus in one example uses adaptive digital beamforming with a plurality of heterogeneous antennas which are more affordable and flexible and do not require the use of a nuller antenna. The method uses adaptive, multi-beam digital beamforming without knowledge of a signal direction or aperture of the antena. The method works with arbitrary antenna elements in arbitrary locations and does not require any a priori antenna model. The method also optimizes signal-to-noise ratio (SNR) of the received signal.

Abstract: An apparatus that includes three or more antennas and an integrated circuit selects antennas for use, i.e., for transmission and reception of electromagnetic radiation. The apparatus selects, at a first time, from the three or more antennas, two antennas having approximately the same feed line length so that the two antennas operate at the same phase and at a first angle. The apparatus selects, at a second time that is different than the first time, from the three or more antennas, two antennas having different feed line lengths so that the two antennas selected for use at the second time operate at different phases and at a second angle that is different than the first angle. In this manner the apparatus may change the pattern and/or shape of electromagnetic radiation transmitted by the apparatus by selecting for use particular antennas having different feed line lengths.

Abstract: There is provided a dual-polarized N/2-column antenna arrangement. The antenna module arrangement comprises a coupler module. The coupler module is arranged to direct a first summation of energy from signals from a first distinct set of power amplifiers of an N-channel radio to a first single output port connected to a first polarization of a first column of the dual-polarized N/2-column antenna arrangement. The coupler module is arranged to direct a second summation of energy from signals from a second distinct set of power amplifiers of the N-channel radio to a second single output port connected to a second polarization of a second column of the dual-polarized N/2-column antenna arrangement.