Abstract: An antenna device and a communication device capable of changing over polarization characteristics of an antenna to improve transmission capacity in various kinds of polarization environments and used configuration by preventing reduction of the communication capacity for a reception signal degrading or varying depending on momentarily changing polarization conditions between a base station and a terminal. The antenna device (110) includes a plurality of first antenna elements (111,112) for a first polarizing direction, a second antenna element (121) provided in the direction orthogonal to the first polarizing direction, a plurality of switches (131,132) for switching connection between the plurality of first antenna elements (111,112) and the second antenna element (121), and power supply parts (141,142) respectively provided on the plurality of first antenna elements (111,112).

Abstract: An all-in-one multi-band antenna includes: a first antenna element configured to operate at a first frequency band, the first antenna element including a first ground, a first radiating part, and a first feed line and a first feed point through which a signal power is applied to the first radiating part; and a second antenna element configured to operate at a second frequency band, the second antenna element including a second ground, a second radiating part, and a second feed line and a second feed point through which a signal power is applied to the second radiating part, wherein the second radiating part is provided within a pseudo-cavity formed at a center portion of the first radiating part.

Abstract: An antenna system in a wireless communication device includes a first antenna, a second antenna, a baseband microchip, a signal sensing unit, a logical circuit, and a switch unit. The first antenna receives and transmits wireless signals; the second antenna transmits wireless signals. The baseband microchip processes the wireless signals and provides a voltage logic signal. The logical circuit logically processes the voltage logic signal and the command signal to generate different switch signals, and the switch unit is controlled by the switch signals from the logical circuit to connect to the first antenna or to the second antenna to transmit the wireless signals.

Abstract: An antenna unit and a communication apparatus are provided, which are operable with respect to wireless systems having three, or more frequencies by employing 2 sets of antenna elements, and which can realize such an antenna structure having a high freedom degree, while the antenna structure can be applied to frequency arrangements as to the plurality of wireless systems.

Abstract: A portable device having a single unit antenna for various functions is provided. The device includes a main body configured to house a battery, a battery cover unit that is configured to be coupled with the main body and cover the battery, and a single unit antenna for various functions having a specified length, the antenna extending at least across a portion of the battery cover unit, and configured to support a plurality of functions.

Abstract: An antenna device for a portable radio communication device comprises a first electrically conductive radiating element including a basic resonance defining section having a first end, a length varying section connected between a feed point of the radiating element and the first end of the basic resonance defining section. The length varying section includes a set of parallel conductive paths and a first switching element selectively supplying radio signals between the feed point and the basic resonance defining section via one of the paths in the set. Each path influences the resonance of the radiating element in a separate way and at least one path includes a reactive element for adjusting the resonance of the first radiating element.

Abstract: According to one embodiment, an antenna switching system includes a (a?3) antennas and a selector. The selector selects b1 (2?b1<a) antennas out of the antennas at first timing, causes the selected antennas to configure an array antenna, selects, at second timing, b2 (2?b2<a) antennas including c (1?c<b1) antennas among the antennas used to configure the array antenna at the first timing out of the antennas, and causes the selected antennas to configure an array antenna.

Abstract: Electronic devices may be provided that contain wireless communications circuitry. The wireless communications circuitry may include radio-frequency transceiver circuitry and first and second antennas. An electronic device may include a housing. The first antenna may be located at an upper end of the housing and the second antenna may be located at a lower end of the housing. A peripheral conductive member may run around the edges of the housing and may be used in forming the first and second antennas. The radio-frequency transceiver circuitry may have a transmit-receive port and a receive port. Switching circuitry may connect the first antenna to the transmit-receive port and the second antenna to the receiver port or may connect the first antenna to the receive port and the second antenna to the transmit-receive port.

Abstract: In a wireless communication apparatus for communicating by using a plurality of antennas, a degree of coupling between antennas is detected before communication is initiated, a combination of antennas is selected based on the degree of coupling and communication is executed using the selected antennas.

Abstract: Aspects of a method and system for a configurable antenna in an integrated circuit package are provided. In a hybrid circuit comprising an integrated circuit bonded to a multi-layer package, one or more antenna parameters may be adjusted by configuring a plurality of antenna elements via one or more switching elements. In this regard, the antenna elements and/or the switching elements may be within and/or on the multi-layer package and/or within the integrated circuit. The switching elements may be MEMS switches on and/or within the IC and/or the multi-layer package. The IC may be bonded or mounted to the underside of the package and signals may be communicated between the IC and the package via one or more solder balls. The IC may comprise suitable logic, circuitry, and/or code for configuring the antenna elements. The antenna elements may be configured based on desired polarization, antenna gain, and/or frequency.

Abstract: 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.

Abstract: A multiple-input multiple-output (MIMO) antenna and an antenna system using the same are provided. The MIMO antenna includes a plurality of antenna elements in which a feeding unit is formed at one end, and another end is connected to a ground, and a connection unit which connects the antenna elements.

Abstract: Systems and methods may be provided for a CMOS RF antenna switch. The systems and methods for the CMOS RF antenna switch may include an antenna that is operative to transmit and receive signals over at least one radio frequency (RF) band, and a transmit switch coupled to the antenna, where the transmit switch is enabled to transmit a respective first signal to the antenna and disabled to prevent transmission of the first signal to the antenna. the systems and methods for the CMOS RF antenna switch may further include a receiver switch coupled to the antenna, where the receiver switch forms a filter when enabled and a resonant circuit when disabled, where the filter provides for reception of a second signal received by the antenna, and where the resonant circuit blocks reception of at least the first signal.

Abstract: Methods and systems for reducing AM/PM and AM/AM distortion are disclosed and may comprise selectively coupling and impedance matching one of a plurality of tunable antennas to a single programmable output stage comprising a single power amplifier in a transmitter. A programmable matching circuit comprising adjustable inductance and capacitance may be used to impedance match the antenna to the output stage. The selected tunable antenna may be coupled to the output stage utilizing a programmable switch array, which may comprise at least one transistor integrated on an integrated circuit including the output stage, for example. The tunable antennas may be designed to operate in different frequency bands and to be tuned within one or more frequency bands. The programmable matching circuit may be integrated on the chip or external to the chip. The matching circuit capacitance may be integrated on-chip, and the inductance may be located off-chip.

Abstract: Antenna diversity systems are provided for portable electronic devices that have wireless communications circuitry and environment sensors. The wireless communications circuitry may include multiple redundant antennas that operate in one or more overlapping radio-frequency communications bands. The environment sensors and redundant antennas may be used in implementing an antenna diversity system. For example, an electronic device may use environment sensors to select an antenna for use in handling wireless communications. The electronic devices may monitor the wireless performance of an active antenna. When the wireless performance of the active antenna degrades, the electronic devices may select a new antenna for wireless communications using the antenna diversity system and environment sensors. Antenna selection may also be made based on which features are being used in the electronic device.

Abstract: When first and second housings are in an open state, first and second switches are electrically opened, and thus, a first antenna element and a ground conductor operate as a first dipole antenna, and a second antenna element and the ground conductor operate as a second dipole antenna with isolation from the first dipole antenna by the slit. When the first and second housings are in the closed state, the first and second switches are electrically closed, and thus, the first antenna element operates as a first inverted F antenna on the ground conductor, and the second antenna element operates as a second inverted F antenna on the ground conductor with isolation from the first inverted F antenna by the slit.

Abstract: A switch circuit with a unit capable of improving a margin voltage without using a negative bias generation circuit is provided. A switch comprising an N-type MOSFET is used for a switch passing a signal to an antenna and a switch comprising a P-type MOSFET is used for a shunt switch grounding a signal. A common control signal is input to the gate terminal of the MOSFET constituting each switch. The inverted signal of this control signal is coupled to a ground terminal of the switch, and thus the potential of the gate terminal of each MOSFET can be set to the ground voltage.

Abstract: An antenna device of a portable terminal is provided. The device includes a sensor, at least two antenna radiators, and a controller. The sensor detects rotation of the portable terminal. At least two antenna radiators radiate radio waves. A controller selects one of the antenna radiators according to a rotation signal detected by the sensor, and switches on the selected antenna radiator so that the selected antenna radiator radiates radio waves.

Abstract: A system and method for improved data transmission on a wireless link to a remote receiving node includes a communication device for converting packets to RF at a physical data rate, an antenna apparatus having a plurality of antenna configurations for transmitting the RF, and a processor for selecting the antenna configuration and the physical data rate based on whether the remote receiving node indicated reception of the data transmission. The processor may determine a table of success ratios for each antenna configuration and may rank each antenna configuration by the success ratio. The processor may transmit with an unused antenna configuration to probe the unused antenna configuration and update the table of success ratios. Similarly, the processor may maintain a table of effective user data rates, rank each physical data rate by the effective user data rate and probe unused physical data rates to update the table.

Abstract: A quad-band antenna device (10) for a portable radio communication device comprises two radiating elements (12, 14) of different lengths and two common conductors (18, 20) of different lengths. One of the common conductors can be selectively connected in and out with respect to radio frequency signals in order to adjust the total electrical length of the antenna device, thereby making it operable in four different frequency bands.

Abstract: A removable spindle for use in a thermal transfer printer houses dual RFID reader antennas that are used to read an RFID tag attached to the core of the print media. The information provided by the RFID tag enables the printer to self-calibrate based on the type of media loaded. The antenna design eliminates “null” areas at which the tag cannot be read, and enables the tag to be read around and across the entire length of the printer spindle. The design also allows the media holder to be easily removed from the printer.

Abstract: A television broadcast signal receiving system including an antenna apparatus including a first antenna which can receive a broadcast signal in a first frequency band and a second antenna which can receive a broadcast signal in a second frequency band and a television broadcast signal receiving apparatus including a selection unit for selecting the first antenna or the second antenna according to a frequency of a broadcast signal which is to be received, a detecting unit for detecting a receiving level of a received signal which is received by the first antenna or the second antenna, a channel setting unit for setting a channel of the broadcast signal in which the receiving level detected by the detecting unit is not less than a predetermined value as a receivable channel, and a control unit for controlling each operation of the selection unit, the detecting unit, and the channel setting unit.

Abstract: Calibration equipment for calibrating multiple test stations in a test system is provided. Each test station may include a test unit, a test chamber with multiple antennas, and radio-frequency (RF) cables that connect the test unit to the multiple antennas within the test chamber. Reference devices under test (DUTs) may be used to calibrate the OTA path loss of each test station while switching one of the multiple antennas into use one at a time at desired frequencies. A preferred antenna list indicating the preferred antenna that provides the optimal path loss for each desired frequency may be generated. Once calibrated, the test stations may be used during product testing to test factory DUTs to determine whether a particular production DUT satisfies pass/fail criteria. During product testing, a selected one of the multiple antennas is enabled based on the preferred antenna list to perform desired measurements.

Abstract: A mobile wireless communications device may include a portable handheld housing, and a wireless transceiver carried by the housing. A pair of an antennas are positioned in side-by-side relation preferably in the upper portion of the portable handheld housing. A human interface diversity controller is connected to the wireless transceiver to preferentially operate with the plurality of antennas based upon a relative position of the portable handheld housing with respect to a hand of a human user. The device can select or weight the antennas based upon the position of the device when being held by a user.

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: Aspects of a method and system for an integrated antenna and antenna management are provided. In this regard, one or more reactances coupled to an antenna in a hybrid circuit may be tuned and signals may be transmitted and/or received based on the tuning. The hybrid circuit may comprise an integrated circuit (IC) bonded to a multi-layer package. The antenna may be embedded within and/or on the multi-layer package. The reactances may be within and/or on the IC and/or the multi-layer package. In this regard, the IC may be bonded to or mounted to an underside of the multi-layer package. The reactances may be tuned via one or more switching elements and/or logic, circuitry, and/or code within the IC. The reactances may comprise one or more inductors and/or capacitor arrays. The multi-layer package may comprise one or more layers of ferromagnetic and/or ferrimagnetic material.

Abstract: A programmable antenna includes a fixed antenna element and a programmable antenna element that is tunable in response to at least one antenna control signal, wherein tuning the programmable antenna element changes an impedance of the antenna. A programmable impedance matching network is tunable in response in response to at least one matching network control signal to adjust for the changes in the impedance of the antenna.

Abstract: A system that is operable to adjust operation of a network device is provided. The system includes an identification module that is coupled with an antenna connector that couples the antenna with a network device. The identification module includes an identification characteristic that may be used to determine an antenna characteristic that defines operation of the antenna. The operation of the network device may be adjusted based on the antenna characteristic.

Abstract: A switchable patch antenna includes a ground plane, a metal patch, at least two feed lines and a switch. The metal patch is positioned adjacent, but not in contact with, the ground plane. Each feed line is electrically connected to the metal patch. Each feed line is substantially orthogonal to at least one other feed line. The switch is electrically connected to the at least two feed lines. The switch is operable to sequentially select between the at least two feed lines for exciting the switchable patch antenna.

Abstract: The present invention relates to an antenna arrangement (100) comprising an antenna part comprising at least two antenna means, each with a number of first antenna elements having a first polarization and a number of second antenna elements having a second polarization different from said first polarization, said antenna part further comprising antenna part ports. There are two antenna part ports for each antenna means, one antenna part port for each polarization, and the antenna arrangement (100) further comprises polarization controlling means (30), comprising a distribution network, to which the antenna part ports are connected, and which includes at least a main forming network with external interface antenna ports (301,302,303,304). The polarization controlling means (30) is configured to connect antenna part ports and external interface antenna ports (301,302, 303,304).

Abstract: An electronically steerable antenna includes at least one driven element, at least one controllable counterpoise element, and a support structure on which the driven element and the controllable counterpoise element are disposed. The controllable counterpoise element has at least one geometric characteristic which can be varied. A radiating angle of the driven element is selectively controlled, at least in part, by modifying the geometric characteristic of the at least one controllable counterpoise element. The counterpoise element may include multiple conductive segments, at least a subset of which may be adapted to be individually electrically connected together so as to modify the radiating angle of the driven, element.

Abstract: A wireless communication apparatus includes a first housing, a second housing which is openably and closably connected to the first housing through a hinge, a first conductor part which is arranged on the first housing, a second conductor and an antenna element, which are arranged on the second housing and an antenna switching part that makes the first conductor part, the second conductor part, and the antenna element serve as a dipole antenna when the first housing and the second housing are in an open state, and makes the antenna element serve as a monopole antenna when the first conductor and the second conductor are in a closed state.

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: An electronic device with antenna switch comprises a first antenna, a first proximity sensor, a second antenna, a detection module, a determination module and a control module. The first proximity sensor is located with the first antenna at a first side portion of the electronic device. The detection module detects an approach signal from the first proximity sensor. The determination module determines whether the strength of the approach signal is stronger than a threshold value in real time. The control module initiate the second antenna to receive signals through the switch if the strength of the approach signal is stronger then the strength of the threshold value.

Abstract: An antenna arrangement comprises a first antenna element; a second antenna element; a coupling element for electromagnetically coupling to the first antenna element and the second antenna element; and a switching mechanism, connected to the coupling element, for switching between a first electrical configuration and a second electrical configuration. When the switching mechanism is in the first electrical configuration, the coupling element has a first impedance and when the switching mechanism is in the second electrical configuration, the coupling element has a second impedance.

Abstract: 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.

Abstract: Systems and methods for controlling a micro electromechanical device using power actuation are disclosed. The disclosed micro electromechanical systems comprise at least one electrostatically actuatable micro electromechanical device and an actuation device. The micro electromechanical device comprises a first conductor and a second conductor having a moveable portion which in use may be attracted by the first conductor as a result of a predetermined actuation power. The actuation device comprises a high frequency signal generator for generating at least part of the actuation power by means of a predetermined high frequency signal with a frequency higher than the mechanical resonance frequency of the moveable portion of the micro electromechanical device.

Abstract: A directional antenna and a portable electronic device using the same are provided. The directional antenna includes L-shaped radiator, L-shaped oscillator, and L-shaped reflector and it is preferred that the directional antenna is positioned at corners of the substrate. The L-shaped radiator is made resonant by the L-shaped oscillator and has higher gain to maximize performance of signal transmission. The directional antenna achieves signal transmission in a specific direction over a long distance by the L-shaped reflector. In addition, with the gravity sensor, the processor and the switches, the directional antenna is automatically adjusted to a predetermined direction to transmit and receive signals even through orientation of the electronic device is changing at any time.

Abstract: Provided is a portable terminal wherein reduction of an antenna gain can be suitably suppressed.

Abstract: Example embodiments of the invention are directed to CMOS differential antenna switches with multi-section impedance transformation. The differential architecture can provide relief from large voltage swings of the power amplifiers by distributing the voltage stress over the receiver switch with two of the identical or substantially similar single-ended switches. In order to reduce the voltage stress further, multi-section impedance transformations can be used. Degraded insertion loss due to the impedance transformation technique can be compensated by selecting an optimal impedance for the antenna switch operation. Accordingly, the use of the multi-section impedance transformations with the differential antenna switch architecture enables high power handling capability for the antenna switch with acceptable efficiency for the transmitter module.

Abstract: Provided is a portable terminal that can suppress reduction of antenna sensitivity.

Abstract: The replacement and elimination of duplexers in a tightly coupled dipole phased array starts with transmit and receive functions physically separated and having different antenna port feeds. The simple coupling network used with tightly coupled dipole arrays is replaced by a state switch which alternates between a coupling state and a dipole feed connection state. The basic method can be applied to antenna apertures of various kinds, including both linear and dual polarized versions. The ability to locate state switches at various nodes in tightly coupled dipole phased arrays permits flexibility in antenna design and eliminates bulky and lossy components, simplifies the design requirements and allows independent optimization of the components.

Abstract: A mobile wireless communications device may include a plurality of antennas, a plurality of wireless transceivers, and signal processing circuitry. The device may further include a controller for selectively switching the signal processing circuitry to a desired one of the wireless transceivers, and for selectively switching a desired one of the antennas to the desired one of the wireless transceivers. Moreover, the controller may also be for selectively connecting and disconnecting the at least one other one of the antennas to an unused one of the wireless transceivers.

Abstract: A communication apparatus communicating other apparatuses includes: a switch for switching between a vertical polarized antenna and a horizontal polarized antenna; a communication device for transmitting and receiving the electric wave via one of the antennas, which is selected by the switch; a monitor for monitoring a relative distance between the apparatus and other apparatuses; and a controller for controlling the switch such that the switch selects the vertical polarized antenna when the relative distance is equal to or larger than a distance threshold, and the switch selects the horizontal polarized antenna when the relative distance is smaller than the distance threshold. The distance threshold is larger than a distance between the apparatus and a dip point.

Abstract: According to one embodiment, an information processing apparatus includes an antenna, a wireless communication module and a switch circuit. The wireless communication module is configured to wirelessly communicate using the antenna. The wireless communication module includes a terminal to output a status indicating a state of a wireless communication. The switch circuit is configured to switch resonant frequency bands of the antenna based on the status signal.

Abstract: A distributed control system for an active array antenna system is disclosed. In an exemplary embodiment, the array system employs many transmit/receive (T/R) modules each with an associated radiator element, a phase shifter element and a set of RF switch elements to set the module to transmit or receive modes. The array system is arranged to generate a transmit or receive array beam. The distributed control system in an exemplary embodiment includes an array processor for controlling the array, the processor configured to generate command signals to set the T/R module elements to transmit or receive mode and to steer the array beam to a desired direction. The command signals to steer the array beam include phase slopes common to all T/R modules in a given array or subarray.

Abstract: A system and method for enabling secure short-range communication. A close proximity transmitter is used that is designed with a relatively poor radiator as compared to a conventional transmitter supporting conventional transmissions such as mobile phone communications, Wi-Fi, or Bluetooth communication. The close-proximity transmitter and the conventional transmitter are selectively activated based on a communication mode.

Abstract: A method for modulating the impedance of an antenna circuit supplying pump signals to a charge pump comprising at least one first pump stage and one last pump stage, the last pump stage supplying a continuous voltage. The output of the first pump stage is short-circuited by means of a switch and the last pump stage goes on pumping electric charges and supplying the continuous voltage. Application in particular to RFID passive transponders.

Abstract: A coaxial helical antenna for transmitting or receiving information through electromagnetic waves includes a first helical antenna comprising a first helix comprising a first diameter and a center cavity; a second helical antenna comprising a second helix comprising a second diameter, wherein the second diameter is smaller than the first diameter, and wherein the second helical antenna is seated within the center cavity of the first helical antenna; a shaped ground plate coupled to the first helical antenna and the second helical antenna; and two microstrip impedance transformers coupled to the first helical antenna, the second helical antenna, and the shaped ground plate.

Abstract: A transmitter unit which is disposed between the first base station and the antenna arrangement contains a device for aggregate signal forming, a D/A converter and a transmission power amplifier. The first base station is connected on the output side to the device for aggregate signal forming such that a digital output signal of the first base station reaches the device for aggregate signal forming as the first input signal. The device for aggregate signal forming is connected on the output side to the antenna arrangement via the D/A converter and the transmission power amplifier such that an aggregate signal formed by the device for sum forming reaches the antenna arrangement, the aggregate signal being formed from the first digital input signal and a second digital input signal connected to the device for aggregate signal forming.