Abstract: A device includes a plurality of ICs and an RF bus structure. Each IC includes a plurality of circuit modules, a switching module, an RF bus transceiver, an antenna interface, and an antenna structure. The switching module provides controlled access to the RF bus transceiver, which communicates via the RF bus structure, among the plurality of circuit modules for external IC communications and provides connectivity among the circuit modules for internal IC communications.
Abstract: A cellular mobile communication system using multiple antennas reselects a plurality of transmission antennas of base stations connected to a mobile station. The system includes measuring a channel quality parameter used for estimation of channel performance, determining whether to reselect the transmission antennas using the measured channel quality parameter, reselecting transmission antennas of the base stations connected to the mobile station, and connecting the reselected transmission antennas to the base station.
Type:
Grant
Filed:
April 18, 2008
Date of Patent:
October 5, 2010
Assignees:
Samsung Electronics Co., Ltd., Board of Regents, The University of Texas System
Abstract: The present invention is an RF filter that translates impedances of an IF circuit to create a filter with an RF center frequency having the high Q roll-off characteristics of an IF filter. The RF filter is self-aligned with the frequency of an RF local oscillator. The RF filter has an impedance divider, which is formed by coupling an RF impedance circuit to a translated IF impedance circuit. The translated IF impedance circuit includes an RF passive mixer and an IF impedance circuit. The mixer translates the impedance of the IF impedance circuit by mixing an RF input signal with an RF local oscillator signal, which determines the RF center frequency. Filtered RF signals may be provided by the impedance divider. Filtered IF signals may be provided by the IF impedance circuit. To effectively translate and preserve the IF impedance characteristics, the IF impedance circuit presents a high impedance at harmonics of the RF local oscillator signal.
Abstract: A system and method for filtering Program Service Name (“PSN”) data includes a processor, an antenna in communication with the processor, a display device in communication with the processor, and a memory unit in communication with the processor. The memory unit contains instruction executable by the processor to configure the processor to receive a signal from a wireless source via the antenna, the signal having PSN data, determine if the PSN data is a static PSN or a slowly updated PSN, and display the PSN data on the display device if the PSN data is a static PSN or a slowly updated PSN.
Type:
Grant
Filed:
April 24, 2007
Date of Patent:
September 21, 2010
Assignee:
Visteon Global Technologies, Inc.
Inventors:
David Paul Wright, Manuel Alejandro Báez Torres
Abstract: A tunable dual-antenna system for multiple frequency band operation is disclosed, which allows a device to switch between multiple frequencies and/or multiple modes, such as CDMA and GSM. The system may comprise a tunable transmit antenna and a tunable receive antenna. One configuration may comprise multiple transmit antennas and multiple receive antennas.
Abstract: The present invention improves a system capacity and satisfaction rate with a quality of service in packet communications performed through a radio link established between a transmitting station and a receiving station by dynamically limiting transmission power of packets in the transmitting station and keeping an increase of an interference level in the receiving station, which belongs to another cell, within a TPC margin. The present invention includes a resource allocator 115 configured to set transmission power of packets in a next step period, by use of transmission power of packets in a preceding step period (slot) and an interference level of the receiving station.
Type:
Grant
Filed:
November 18, 2008
Date of Patent:
September 21, 2010
Assignee:
NTT DoCoMo, Inc.
Inventors:
Lan Chen, Daisuke Kitazawa, Hidetoshi Kayama, Narumi Umeda
Abstract: The present invention provides a shared phone, a medium having recorded therein a program for controlling the shared phone, and a method for controlling the shared phone, which can make the shared use by a plurality of users easy. The shared phone switches phone numbers depending on users, and includes a user information storage unit that stores user information including phone numbers for each user, a public line communication unit that performs public line communication, and registers phone numbers stored in the user information storage unit to a public line, and detects an incoming call to a registered phone number, a display unit that, in case an incoming call is detected by the public line communication unit, displays user information corresponding to the incoming call from among user information stored by the user information storage unit, and an operation unit that accepts instruction for public line communication from a user, and sends the instruction to the public line communication unit.
Abstract: In one embodiment, a frequency agile receiver is provided that includes an antenna: a first diode having its anode coupled to ground through a first conductor; a second diode having its anode coupled to the cathode of the first diode through a second conductor, the antenna coupling to the second conductor, the second diode having its cathode coupled to an output node through a third conductor, wherein at least one of the first, second, and third conductors comprises a shape memory alloy conductor; and a tuning circuit adapted to drive a bias current into the shape memory alloy conductor.
Abstract: A scalable network is provided. The network includes a remote device coupled to an antenna and adapted to communicate with subscriber units over an RF link, a switching device coupled to the remote device, and a radio suite coupled to the switching device. The radio suite includes two or more radios, each radio performs the functions of a base station transceiver. The switching device interconnects the radio suite with the remote device. Each radio supports one or more air interface standards.
Type:
Grant
Filed:
February 1, 2005
Date of Patent:
August 31, 2010
Assignee:
ADC Telecommunications, Inc.
Inventors:
David J. Conyers, Michael J. Hermel, Larry G. Fischer, Jeff Solum
Abstract: A voice data and RF integrated circuit (IC) includes an RF transmitter, that generates an RF signal to a power amplifier module. A memory module stores a least one application as a plurality of operational instructions, the at least one application having a plurality of modes that each correspond to one of a plurality of use characteristics. A processing module executes the plurality of operational instructions and determines a selected one of the plurality of modes based on current use characteristics of the at least one application, and generates at least one control signal based on the selected one of the plurality of modes. A bias control generator generates a bias control signal in response to the at least one control signal, to control the biasing of the power amplifier module.
Abstract: A radio receiver includes an aerial wire that receives a radio signal in which a transmission signal is superimposed on a carrier, a voltage-controlled oscillator that oscillates a local oscillation signal, a frequency multiplier, a demodulation circuit that demodulates the transmission signal on the basis of the radio signal and the local oscillation signal, and an oscillation frequency control circuit that repeatedly sweeps the frequency of the local oscillation signal over a frequency bandwidth that is equal to or greater than the width of a frequency drift in a carrier frequency from the aerial wire or over a frequency bandwidth that is equal to or greater than the width of a frequency drift in the local oscillation signal.
Abstract: An apparatus for frequency up conversion and down conversion using frequency multiplier circuits. The frequency multiplier circuits receive a lower frequency signal and are operated in a forward direction to provide a higher frequency output. The same frequency multiplier circuits are operated in a reverse direction by receiving a higher frequency signal and producing a lower frequency output. The frequency multiplier circuits preferably use heterojunction barrier varactor diodes to eliminate the need for DC bias or idler circuitry.
Abstract: Communicating a signal includes establishing a quality indicator at a first communication device that has antenna elements. The quality indicator indicates the quality of communication links between the first communication device and a second communication device. A modification describing an adjustment of a modulation feature is determined according to the quality indicator. The availability of the quality indicator is established. Modulation of a subset of signals in accordance with the determined modification is initiated in response to establishing the availability of the quality indicator. The antenna elements send the signals to yield a transmitted signal.
Abstract: A dual conversion receiver architecture that converts a radio frequency signal to produce a programmable intermediate frequency whose channel bandwidth and frequency can be changed using variable low-pass filtering to accommodate multiple standards for television and other wireless standards. The dual conversion receiver uses a two stage frequency translation and continual DC offset removal. The dual conversion receiver can be completely implemented on an integrated circuit with no external adjustments.
Type:
Grant
Filed:
April 13, 2005
Date of Patent:
August 17, 2010
Assignee:
MaxLinear, Inc.
Inventors:
Kishore Seendripu, Raymond Montemayor, Curtis Ling, Glenn Chang, Sheng Ye
Abstract: A data transaction processing system in which transaction data is entered by the user in response to prompts in a template which is tailored to each user application. The data transaction is received via protocols at a database server which, depending upon the application, stores the entire data transaction, explodes the data transaction to produce ancillary records which are then stored, and/or forwards the data transaction or some or all of the ancillary records to other database servers for updating other databases associated with those database servers.
Abstract: Embodiments of methods and apparatus for providing aggregated feedback from a subscriber station to a base station are generally described herein. Some embodiments may include a channel response predictor to predict channel responses for future feedback periods and a feedback information generator to aggregate feedback information, generated based on the predicted channel responses, into an aggregated information block that is to be transmitted to a base station. Other embodiments may be described and claimed.
Type:
Grant
Filed:
December 28, 2006
Date of Patent:
August 17, 2010
Assignee:
Intel Corporation
Inventors:
Qinghua Li, Guangjie Li, Xintian E. Lin
Abstract: The present invention provides a quadrature RF amplifier output network that includes a quadrature RF combiner and impedance transformation circuitry. The output network is coupled between a quadrature RF amplifier and an antenna, or other downstream circuitry to optimize net RF power transfer and improve overall power efficiency. The quadrature RF combiner phase-shifts and combines quadrature RF signals from the quadrature RF amplifier into a single combined RF signal that feeds the impedance transformation circuitry. The impedance transformation circuitry transforms an impedance that is presented to the output of the quadrature RF amplifier output network into a desired quadrature impedance that is presented to the outputs of the quadrature RF amplifier. Termination circuitry is coupled to the quadrature RF combiner to capture improperly phased signals, reflected signals, or imbalanced signals.
Abstract: In a structure having a fractional-N synthesizer driven by a voltage controlled oscillator, frequency accuracy is maintained by first using the fractional-N synthesizer to correct large frequency errors and then slowly transferring correction from the fractional-N synthesizer to the voltage controlled oscillator a little at a time.
Abstract: Counter-clockwise and clockwise quadrant transitions are detected and accumulated with respect to a received complex signal over a certain time period. These transitions may then be compared in order to obtain information indicative of both a magnitude and phase of a carrier frequency error for the received signal. Additionally, zero-crossings of the received complex signal over the same certain time period are detected and accumulated. The accumulated crossings provide information indicative of frequency offset magnitude. The determined magnitude and phase of the frequency error may then be used to adjust a local oscillator frequency to provide for improved receiver performance.
Abstract: Measurements for handoff are made by a wireless transmit/receive unit (WTRU) operating with a switched beam antenna in a wireless communication system. The switched beam antenna is a smart antenna generating a plurality of directional beams and an omni-directional beam. The WTRU measures signals from a plurality of cells with the omni-directional beam and/or one or more of the directional beams. The WTRU evaluates and reports to the network measurement of the omni-directional beam or the strongest beam for adding cells to an active set of cells. For removing cells from an active set of cells, the WTRU evaluates and reports to the network measurements of the antenna beam selected for communication with the active set cells.
Type:
Grant
Filed:
May 1, 2007
Date of Patent:
July 27, 2010
Assignee:
InterDigital Technology Corporation
Inventors:
Janet Stern-Berkowitz, Ana Lucia Iacono, Kambiz Casey Zangi