Class / Patent application number | Description | Number of patent applications / Date published |
455277100 | Selectively or alternately connected to receiver | 27 |
20080318540 | Receiving Apparatus - The present invention is intended to be able to ensure detecting whether an open-circuit occurs to a feeder within short time with simple configuration. A receiving apparatus | 12-25-2008 |
20080318541 | Receiving Apparatus - In order to restore synchronization quickly in the case where synchronization with a transmission signal is not established, when a synchronization signal is not received by an antenna selected in advance in a receiving apparatus ( | 12-25-2008 |
20090036081 | METHOD AND APPARATUS TO PROCESS DEDICATED PHYSICAL CONTROL CHANNEL (DPCCH) IN A TRANSMIT ANTENNA DIVERSITY (TXDIV) RAKE FINGER - A method to process DP bits and TPC bits from multiple fingers within a WCDMA rake receiver is provided. DPCH symbols are received, quantized and channel compensated. Then processing operations for individual fingers for the channel compensated quantized despread DPCH symbols containing DP bits and TPC bits are chosen based on the DPCH slot format. The DPCH symbols are processed based on the DPCH slot format in order to produce processed DPCH pilot symbols in a common format. DP bits and TPC bits may be processed in parallel by separate processing branches or in series by applying timing control to common processing modules. These processed symbols may then be combined. Other embodiments may further allow for the computation of an SNR estimate based on the combined DPCH symbols. | 02-05-2009 |
20090075617 | Receiver system and method for switching among a plurality of antenna elements to receive a signal - A receiver system and method for switching among a plurality of antenna elements to receive a signal. At least a portion of plurality of antenna elements receive a transmitted signal, such that the transmitted signal includes a plurality of sub-channels that are transmitted in predetermined time intervals. A switching device is in communication with the plurality of antenna elements, and switches among single antenna elements to receive the transmitted signal. A controller is in communication with the switching device, and commands the switching device to select each of the antenna elements separately in predetermined periods of time based upon the predetermined time intervals of each of the sub-channels. A power level of the transmitted signal is determined during the predetermined period of time that corresponds to the predetermined time intervals, and the controller commands the switching device to switch to an antenna element based upon the determined power level. | 03-19-2009 |
20090075618 | Multi-antenna/multi-receiver array diversity system - The present invention is a system for increasing Signal-to-Noise Ratio (SNR) in a wireless communication system comprising a plurality of antennas each antenna providing a signal, a device for selecting a subset of signals provided by the plurality of antennas, a maximum ratio combiner for summing the selected subset of signals provided by the plurality of antennas, and a decision device for measuring the selected subset of signals against a predefined threshold. The device for selecting the subset of signals is coupled to the plurality of antennas. The maximum ratio combiner is coupled to the selected subset of signals and the decision device for measuring the selected subset of signals against a predefined threshold. The decision device is coupled to the selecting device such that one selected signal of the selected subset of signals is replaced by an unused signal provided by the plurality of antennas. | 03-19-2009 |
20090104884 | Apparatus and method for receiving signal in multiple input multiple output system - A receiving apparatus and method of a Multiple Input Multiple Output (MIMO) system are provided. The receiving apparatus includes a clock generation/delay compensation unit for generating a clock, an antenna switching unit for temporally dividing signals received through multiple antennas by performing switching according to the clock, a radio frequency (RF) chain to be shared for converting the temporally divided signals into baseband signals, and an analog to digital converter (ADC) to be shared for converting the converted signals into digital signals and for outputting the converted signals according to the clock. Accordingly, the number of RF chains used to implement a MIMO RFIC is reduced. | 04-23-2009 |
20090170461 | ANTENNA DIVERSITY RECEIVER - An antenna diversity receiver includes a plurality of antennas, an antenna selector unit, an RF module unit, a logic gate unit, a power detector unit, and a selection controller unit. The antenna selector unit selects one of the antennas. The RF module unit converts an RF RX signal received from the antenna selector unit into a baseband RX signal. The logic gate unit controls a power detection mode for detecting the power levels of RX signals and an operation mode for selecting one of the antennas. The power detector unit detects the power level of the RX signal. The selection controller unit controls the antenna selector unit to sequentially select the antennas in the power detection mode, and controls the antenna selector unit to select the antenna with a relatively good RX sensitivity among the antennas. | 07-02-2009 |
20090258627 | RECEIVING CIRCUIT, USE, AND METHOD FOR RECEIVING IN A RADIO NETWORK - A receiving circuit, use, and method for receiving in a radio network is provided, wherein switching is performed continuously between a first signal, which is received over a first antenna, and a second signal, which is received over a second antenna, to form an input signal. The input signal is converted analog/digitally into a digital signal, the digital signal is correlated to output a correlation signal, the correlation signal is compared with a threshold, and the switching for data reception in a current switch position is stopped when the correlation signal exceeds the threshold. | 10-15-2009 |
20090270059 | Receiver system and method for receiving signals - A receiver system and method for receiving signals are provided, wherein the system includes a plurality of antenna elements configured to receive a transmitted signal. A receiver device is in communication with the plurality of antenna elements, wherein the receiver device is configured to emit an output based upon the received signal, and communicate a control signal that corresponds to a determined signal quality of the received signal. A switch device is adapted to switch among the plurality of antenna elements to electrically connect a selected antenna element of the plurality of antenna elements to the receiver device. A controller is in communication with the receiver device, such that the controller receives the control signal, wherein the controller commands the switch device to directly switch to any of the antenna elements to electrically connect one of the plurality of antenna elements to the receiver device based upon the control signal. | 10-29-2009 |
20090270060 | METHOD AND SYSTEM FOR ANTENNA SELECTION DIVERSITY WITH PREDICTION - Certain embodiments of the invention may be found in a method and system for antenna selection diversity with prediction. An antenna diversity system may use information that it has stored on the antenna selection process in previous frames to predict the starting receiving antenna and the starting transmission antenna for the next frame. The prediction may be based on which antennas were selected in previous frames or may be based metrics associated with performance of the antennas. Prediction may be based on a majority polling scheme of previously selected antennas in a determined number of previous frames. Prediction may also be based on a weighted sum of at least one selection metric for all antennas in a determined number of previous frames. Antenna prediction provides a significant performance improvement by reducing the processing and operational overhead in cases where a transmit or a receive antenna dominates. | 10-29-2009 |
20090325528 | Terminal apparatus and diversity antenna control method for the same - A terminal apparatus adapted to receive a wireless signal by antenna diversity, wherein provisions are made to reduce the number of receive circuits while also reducing the time required for antenna selection. The a terminal apparatus is adapted to receive a wireless signal by antenna diversity, and includes: a mode-of-use detection unit for detecting the mode of use of the terminal apparatus as set up by a user; a storage unit for storing priority information that predefines an antenna to be selected for use by prioritizing the plurality of antennas according to the mode of use that can be detected by the mode-of-use detection unit; and a comparator for outputting selection control information specifying at least one antenna from among the plurality of antennas by comparing the mode of use detected by the mode-of-use detection unit with the priority information stored in the storage unit. | 12-31-2009 |
20100062737 | METHOD AND APPARATUS FOR ANTENNA DIVERSITY RECEIVER BASED ON ATSC TECHNOLOGY - A receiver comprises a plurality of paths for receiving wireless signals, each path having a designated antenna; and an antenna diversity chain adapted for information communication between the plurality of paths for a selecting and using a path among the plurality of paths. | 03-11-2010 |
20130295867 | DIVERSE RADIO RECEIVER SYSTEM - A diverse radio receiver system includes a radio frequency (RF) circuit board, a plurality of RF receivers disposed on the RF circuit board, and switching circuitry disposed on the RF circuit board. The switching circuitry includes transmission lines and switches connecting each RF receiver with (1) a selected one antenna of a plurality of antennas and (2) an impedance matching circuit providing impedance matching of the selected one antenna with the RF receiver. The switching circuitry is configured to implement a plurality of selectable switch configurations, each switch configuration connecting each RF receiver of the plurality of RF receivers with a selected antenna of the plurality of antennas. The impedance matching circuits of the switching circuitry may comprise impedance matching transmission line stubs. The diverse radio receiver system may be configured to receive an RF signal transmitted by a wireless magnetic resonance (MR) receive coil. | 11-07-2013 |
20130324068 | MULTI-ANTENNA/MULTI-RECEIVER ARRAY DIVERSITY SYSTEM - The present invention is a system for increasing Signal-to-Noise Ratio (SNR) in a wireless communication system comprising a plurality of antennas each antenna providing a signal, a device for selecting a subset of signals provided by the plurality of antennas, a maximum ratio combiner for summing the selected subset of signals provided by the plurality of antennas, and a decision device for measuring the selected subset of signals against a predefined threshold. The device for selecting the subset of signals is coupled to the plurality of antennas. The maximum ratio combiner is coupled to the selected subset of signals and the decision device for measuring the selected subset of signals against a predefined threshold. The decision device is coupled to the selecting device such that one selected signal of the selected subset of signals is replaced by an unused signal provided by the plurality of antennas. | 12-05-2013 |
20140302808 | ANTENNA SYSTEM WITH SELF-IDENTIFYING ANTENNA - According to one embodiment disclosed herein, there is provided an antenna module including a self-identification mechanism that may be used by one or more wireless circuits for management purposes. The self-identification mechanism may, for example, take the form of an integrated circuit (IC) device or chip that stores a serial number that may function as a unique identifier for an antenna on which it is mounted or associated. In one embodiment, a wireless module, for example containing RF components for sending and receiving signals from the antenna, queries the serial number device, and acquires the serial number for the antenna. The wireless module can use the serial number for any number of purposes, and in particular to verify that the antenna connected is a compliant antenna that will operate within the range, within the limits, and/or with the performance specified for the radio circuits within the wireless module. | 10-09-2014 |
20150140943 | METHOD OF RECEIVING WIDEBAND SIGNAL - A multiple antenna receiver receives a wideband signal containing two or more sub-signals of interest. The receiver may be selectively configured to receive all sub-signals of interest with all antennas, or to receive different sub-signals of interest with different antennas. | 05-21-2015 |
20150147993 | DISTRIBUTED ANTENNA FOR WIRELESS COMMUNICATION AT HIGH SPEED - Technologies and implementations for providing high-speed wireless communication are generally disclosed. | 05-28-2015 |
20160093940 | COMMUNICATION DEVICE AND DISPLAY INCORPORATING ANTENNAS BETWEEN DISPLAY PIXELS - A display, such as for a touch-sensitive communication device, can include a transparent cover glass, pixels that emit light through the cover glass, and multiple antennas positioned along respective paths in an inactive area between the pixels. The antennas do not obstruct the light produced by the pixels, and can therefore be composed of opaque materials, such as metallic thin films, without affecting the optical properties of the display. In some examples, several antennas can have the same size and shape but different orientations, so that a radio can switch between or among the antennas to optimize reception. In some examples, the antennas can have different sizes and/or shapes, so that the antennas can send and/or receive radio signals in different frequency ranges of the electromagnetic spectrum. In some examples, locating the antennas in the display can allow the device to include a metallic housing. | 03-31-2016 |
20160254598 | APPARATUS AND METHOD FOR GNSS ANTENNA SELECTION | 09-01-2016 |
455277200 | By signal quality (e.g., noise) | 8 |
20080299931 | System, Apparatus, and Method for Multi-Band Ofdm Systems with Receiver Antenna Selection Per Sub-Band - The present invention provides a system ( | 12-04-2008 |
20090042529 | ANTENNA DIVERSITY SYSTEM FOR RELATIVELY BROADBAND BROADCAST RECEPTION IN VEHICLES - There is disclosed an antenna diversity system for relatively broadband broadcast reception in vehicles such as motor vehicles. The device can include a diversity processor having numerous components including a microprocessor for controlling a signal selection switch. In alternative embodiments the processor can be incorporated into a receiver or into a multi-antenna system. One advantage of these designs is that it is able to exist with one reception tuner and being able to select one signal from a plurality of antenna signals A | 02-12-2009 |
20090149146 | ADAPTIVE MILLIMETER-WAVE ANTENNA SYSTEM - A method of receiving an RF signal in a wireless communication device includes receiving ( | 06-11-2009 |
20090286498 | ANTENNA DIVERSITY RECEIVER AND ANTENNA SWITCHING CONTROL METHOD THEREFOR - Disclosed is an antenna diversity receiver comprising an antenna switching control unit that includes a noise extraction unit that extracts noise from an FM detection output, a comparator that detects multipath interference from the extracted noise, a switching signal generation unit that outputs, to an antenna switching unit, an antenna switching signal directing switching from one antenna presently in use to another antenna, when multipath interference is detected, a modulation factor detection unit that obtains a modulation factor from the FM detection output, an over-modulation decision unit that decides whether or not the modulation factor is for over-modulation, and a sensitivity setting unit that, when it is decided that there is over-modulation, changes a multipath detection threshold for detecting multipath interference in the comparator, and performs setting to decrease sensitivity of detection of the multipath interference. | 11-19-2009 |
20100248672 | Beamforming in Wireless Vehicular Networks - Beams are used to communicate in a wireless network including mobile and stationary receivers. The network operates according to the IEEE 802.11p in wireless access to vehicular environments (WAVE). A direction from the mobile transceiver to the stationary receiver is predicted using geographic information available to the mobile transceiver. A set of signals are received in the mobile transceiver from the stationary transceiver, wherein the signals are received by an array of antennas, and wherein the signals are received using a set of beams, and wherein each beam is approximately directed at the stationary receiver. A signal-to-noise ratio (SNR) is measured for each beam, and the beam with an optimal SNR is selected as an optimal beam for communicating data between the mobile transceiver and the stationary transceiver. | 09-30-2010 |
20110136459 | APPARATUS AND METHOD FOR SELECTING ANTENNA OF DIVERSITY ANTENNA SYSTEM - There is provided an apparatus for selecting an antenna of a diversity antenna system that includes an antenna selector selecting one of a first antenna and a second antenna in accordance with an antenna selection signal, a receiver measuring a quality value of a signal from the antenna selected by the antenna selector and determining detection of the signal by comparing whether or not the measured quality value of the signal is higher than a predetermined first reference value, and a selection controller determining an antenna change error by comparing whether or not an antenna stay time when the signal is continuously detected is within a predetermined error available time when the signal is detected in the receiver and controls the changing of the antenna to a previous antenna when the antenna stay time is within the error available time. | 06-09-2011 |
20110300822 | SYSTEM AND METHOD FOR CHANNEL-ADAPTIVE ANTENNA SELECTION - Systems and methods that provide channel-adaptive antenna selection in multi-antenna-element communication systems are provided. In one embodiment, a method that selects a subset of receive antennas of a receiver to receive a transmitted RF signal may include, for example, one or more of the following: establishing possible subsets of the receive antennas; determining sets of channel parameter statistics corresponding to the possible subsets of the receive antennas; computing output bit error rates of the receiver, each output bit error rate being computed based on at least one set of channel parameter statistics; selecting a particular possible subset of the receive antennas based upon a criterion predicated on the computed output bit error rates; and connecting one or more RF chains of the receiver to the receive antennas of the selected particular possible subset. | 12-08-2011 |
20130035051 | ANTENNA SWITCHING SYSTEM WITH ADAPTIVE SWITCHING CRITERIA - Electronic devices may be provided that contain wireless communications circuitry. The wireless communications circuitry may include radio-frequency transceiver circuitry coupled to multiple antennas. Signal strength measurements may be gathered using the antennas and corresponding signal strength difference measurements may be produced to reflect which of the antennas is exhibiting superior performing. The signal strength difference measurements may be filtered using time-based averaging filters with different speeds. Corresponding filtered difference measurements may be compared to antenna switching criteria such as antenna switching thresholds. An antenna switching threshold may be adjusted in real time based on computations of how much variation is exhibited as a function of time between the difference measurements filtered using the filters of different speeds. Information on device movement or other data may be used in making threshold adjustments. | 02-07-2013 |