Patents Examined by Young T. Tse
  • Patent number: 11405069
    Abstract: An electronic device including: an antenna; a first switch functionally connected to the antenna and configured to perform switching to connect the antenna with a transmission path or a reception path; a first filter and a first amplifier configured to form the reception path; a second filter and a second amplifier configured to form the transmission path; a Radio Frequency Integrated Circuit (RFIC) connected to the reception path and the transmission path and configured to process an RF signal; and at least one processor configured to control the RFIC and the first switch such that a transmission signal generated by the RFIC is radiated from the antenna via the transmission path.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: August 2, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Namjun Cho, Geunwoo Kim
  • Patent number: 11405242
    Abstract: A PAM-4 DFE receives an input signal distorted by inter-symbol interference (IS I) and expressing a series of symbols each representing one of four pulse amplitudes to convey two binary bits of data per symbol. High-order circuitry resolves the most-significant bit (MSB) of each two-bit symbol, whereas low-order circuitry 115 resolves the immediate least-significant bit (LSB). An immediate value of the MSB is used to select a set of IS I offsets used to resolve the LSB. Resolved values of the prior values of the MSB and LSB are then used to select the IS I offset for the immediate symbol.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: August 2, 2022
    Assignee: Rambus Inc.
    Inventors: Masum Hossain, Nhat Nguyen, Charles Walter Boecker
  • Patent number: 11394446
    Abstract: The present disclosure relates to an interference estimation method and apparatus. The apparatus includes at least one first processor, a serving channel matrix, and an interference channel matrix. The at least one first processor generates an input vector from at least one of a received signal vector corresponding to a received signal with a serving signal and an interference signal. The serving channel matrix corresponds to the serving signal. The interference channel matrix corresponds to the interference signal and a second processor. The second processor executes at least one machine learning model trained by sample input vectors and sample interference parameters. The at least one first processor provides the input vector to the second processor and determines interference parameters corresponding to the interference signal based on an output vector of the at least one machine learning model provided by the second processor.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: July 19, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Junyeong Seo, Jooyeol Yang
  • Patent number: 11394368
    Abstract: A filter includes: a series-arm resonator; and a parallel-arm resonator. The series-arm resonator and the parallel-arm resonator each include: an interdigital transducer (IDT) electrode formed on a substrate and including a plurality of electrode fingers; and a protective film. The protective film included in the parallel-arm resonator is thinner than the protective film included in the series-arm resonator. The parallel-arm resonator has a first fractional bandwidth ((the higher-order resonance frequency?the resonant frequency)/the resonant frequency) greater than the first fractional bandwidth of the series-arm resonator. The parallel-arm resonator has a second fractional bandwidth ((the higher-order antiresonant frequency?the antiresonant frequency)/the antiresonant frequency) greater than the second fractional bandwidth of the series-arm resonator.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: July 19, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Koji Nosaka
  • Patent number: 11368184
    Abstract: A radio-transmitting device comprises a radio interface operating in a predetermined frequency band, operatively arranged for modulating a carrier having a frequency in the frequency band, while switching the frequency of the carrier among several hopping frequencies in the frequency band, according to a hopping sequence, to obtain a spread-spectrum modulated signal, wherein the spread-spectrum modulated signal includes, in a preamble portion, a plurality of sync words, each combined with at least one instance of a sequential index, the sync words being transmitted at different frequencies, and a data portion following the preamble portion and including a plurality of frequency hops.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: June 21, 2022
    Assignee: Semtech Corporation
    Inventors: Olivier Bernard André Seller, Nicolas Sornin
  • Patent number: 11362708
    Abstract: This disclosure provides methods, devices and systems for wireless communication, and particularly, methods, devices and systems for implementing a joint transmission feature in a wireless communication system. Using the joint transmission feature, multiple access points (APs) may use an aggregated collection of antennas of multiple APs to simultaneously transmit a joint beamformed transmission to one or more stations (STAs). The techniques in this disclosure may prevent or reduce variations in relative gain adjustments by the APs that could otherwise negatively impact the joint transmission. In some implementations, a network device may determine a normalized gain adjustment value based on power parameters associated with each of the multiple APs. In some other implementations, each AP may determine the normalized gain adjustment value based on power parameters shared between the APs.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: June 14, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Sameer Vermani, Bin Tian, Stephen Jay Shellhammer, Youhan Kim
  • Patent number: 11356133
    Abstract: Systems and techniques are described that are directed to filter frequency response shift compensation, including attenuation compensation. Attenuation compensation can apply a pre-distortion to compensate for the magnitude of attenuated resource units (RUs). Additionally, filter frequency response shift can involve applying PHY Protocol Data Unit (PPDU) scheduling schemes. For example, a PPDU scheduling scheme can reduce bandwidth in the channel, thereby dropping the affected RUs. The attenuation compensation is implemented using front ends that provide feedback to a respective radio, which allows that radio to apply the appropriate pre-distortion. The front end can include one or more filters enabling frequency domain coexistence between collocated radios operating in the differing Wi-Fi bands, and a coupler that provides the feedback indicating the frequency response shift to a radio.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: June 7, 2022
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Farhan Hasnain, Nitin A. Changlani, Eldad Perahia, Deven Patel
  • Patent number: 11356078
    Abstract: Systems, methods, and devices for reducing insertion loss and/or swapping transmitter (TX) and receiver (RX) frequencies in an electrical balance duplexer (EBD) used in a transceiver device for frequency division duplexing (FDD) applications are provided. Feed-forward receiver path from the antenna to a low noise amplifier (LNA) and a feed-forward path from the antenna to a power amplifier (PA) of the EBD may be used for reducing insertion loss of the RX and TX signals. In some embodiments, switches may be used to selectively alter operational modes for varied levels of isolation and/or swapping of TX and RX frequencies.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: June 7, 2022
    Assignee: Apple Inc.
    Inventors: Joonhoi Hur, Rastislav Vazny, Ronald W. Dimpflmaier
  • Patent number: 11356304
    Abstract: Various embodiments provide for quarter-rate data sampling with loop-unrolled decision feedback equalization (DFE) that uses a two-summer (e.g., two-summing node) approach. For example, some embodiments provide for quarter-rate data sampling comprising a plurality of unrolled first-tap DFE loops, and two summers and a two-to-one multiplexer for each of the other tap loops used for direct feedback (e.g., second tap, third tap, fourth tap, etc.
    Type: Grant
    Filed: July 9, 2021
    Date of Patent: June 7, 2022
    Assignee: Cadence Design Systems, Inc.
    Inventors: Guillaume Fortin, Jean-Francois Delage, Louis-Francois Tanguay, Mathieu Gagnon
  • Patent number: 11349691
    Abstract: An apparatus and a method for handling non-continuous data transfer for a decision feedback equalizer in a memory subsystem. The apparatus includes a plurality of end-of-transfer detection flip-flops configured to sample a read data enable signal; a flag flip-flop; a first logic circuit configured to generate a load enable signal in response to the end-of-transfer detection flip-flops and the flag flip-flop; a second logic circuit configured to generate a load data in response to the end-of-transfer detection flip-flops, the flag flip-flop and the read data enable signal; a plurality of first-in-first-out buffers configured to receive the load enable signal and the load data, and unload the load data as an end-of-transfer indicator in line with data strobe; and a plurality of bypass flip-flops configured to generate a bypass signal in response to the end-of-transfer indicator.
    Type: Grant
    Filed: June 1, 2021
    Date of Patent: May 31, 2022
    Assignee: SKYECHIP SDN BHD
    Inventors: Soon Chieh Lim, Hoong Chin Ng
  • Patent number: 11349507
    Abstract: A radio frequency module includes: a module board including a first principal surface; a reception filter disposed on or above the first principal surface; a transmission filter disposed on the reception filter; a switch mounted on the module board; and a bonding wire that connects the transmission filter to the switch. One end of the bonding wire is connected to the transmission filter and the other end of the bonding wire is connected to the switch.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: May 31, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Rui Tanaka
  • Patent number: 11349536
    Abstract: A transmission apparatus that (i) generates a Quadrature Phase Shift Keying (QPSK) modulation signal s1(t) by applying a QPSK modulation scheme to a first data sequence, (ii) generates a 16-Quadrature Amplitude Modulation (QAM) modulation signal s2(t) by applying a 16-QAM modulation scheme to a second data sequence, (iii) generates a transmission signal z1(t) and a second transmission signal z2(t) by applying a phase hopping process, a precoding process, and a power adjust process to the QPSK modulation signal s1(t) and the 16-QAM modulation signal s2(t), wherein an average transmission power of the 16-QAM modulation signal s2(t) being the same as an average transmission power of the QPSK modulation signal s1(t), and (iv) transmits the transmission signal z1(t) from a first antenna at a first time and a first frequency and the second transmission signal z2(t) from a second antenna at the first time and the first frequency.
    Type: Grant
    Filed: April 12, 2021
    Date of Patent: May 31, 2022
    Assignee: SUN PATENT TRUST
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 11343127
    Abstract: Method for processing a sequence of digital signal samples including a first sub-sequence and a second sub-sequence. Forming a first block of samples comprising the first sub-sequence and a second block of samples comprising header samples followed by the second sub-sequence. Demodulating the first block of samples through a digital demodulator to produce a first block of symbols, and the second block of digital signal samples through a second digital demodulator to produce a second block of symbols. The second demodulator implementing a carrier synchronisation or symbol rate synchronisation starting with the header samples, which comprise samples in a number adapted in such a way that the synchronisation is effective before the second demodulator demodulates the second sub-sequence. Reconstructing a sequence of symbols by concatenating the first symbol block with the second symbol block.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: May 24, 2022
    Assignees: SAFRAN DATA SYSTEMS, CENTRE NATIONAL D'ETUDES SPATIALES
    Inventors: Alain Thomas, Jean-Marc Leveau, Stanislas Augarde, Emmanuel Bouisson, Adrien Gay
  • Patent number: 11336490
    Abstract: Disclosed embodiments include a decision feedback equalizer (DFE) comprising an N-bit parallel input adapted to be coupled to a communication channel and configured to receive consecutive communication symbols, a first DFE path including a first path input configured to receive communication symbols, and a first adder having a first adder input coupled to the first path input. There is a first DFE filter having outputs responsive to the first DFE filter inputs, the outputs coupled to the second adder input. The DFE includes a first path having a first slicer and a first multiplexer, a first path multiplexer output, and a second DFE path including a second path input configured to receive a second communication symbol, a second adder, a second DFE filter, a second slicer, and a second multiplexer.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: May 17, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Raghu Ganesan, Kalpesh Rajai
  • Patent number: 11336331
    Abstract: Systems and methods are disclosed for an integrated circuit (IC) comprising an oscillator, an on-off-keying modulator configured to modulate input data coupled to the oscillator, a serial communications transmitter coupled to the on-off-keying modulator, a serial communications receiver coupled to the serial communications transmitter by a set of cables, and an envelope detector coupled to the serial communications receiver. In the IC, power and data are simultaneously delivered across the same set of cables from the serial communications transmitter to the serial communications receiver.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: May 17, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Dushmantha Bandara Rajapaksha, Wesley Ray, Hao Liu, Maxwell Robertson
  • Patent number: 11329718
    Abstract: An integrated analog to digital converting and digital to analog converting (ADDA) RF transceiver for satellite applications capable of flexibly processing high-bandwidth and low-bandwidth RF input signal(s). The RF transceiver may selectively distribute high-bandwidth RF input signals among one or more DSP pipelines for parallel processing of the RF input signals, and the RF transceiver may coherently recombine the processed signals from the one or more DSP pipelines to generate an RF output signal. The ADDA RF transceiver includes one or more ADCs, DSPs, and DACs, all on one or more ASICs, FPGAs, or modular electronic devices in a single semiconductor package. Further, the RF transceiver is radiation tolerant at the module, circuit, and/or system level for high availability and reliability in the ionizing radiation environment present in the space environment.
    Type: Grant
    Filed: January 6, 2021
    Date of Patent: May 10, 2022
    Assignee: Seakr Engineering, Inc.
    Inventors: Paul Rutt, Erik Buehler, Damon Van Buren
  • Patent number: 11329675
    Abstract: A radio frequency module includes a transmit filter of Band A and Band B, a transmit amplifier, and a switch circuit and can perform CA using a transmit signal of Band A and a receive signal of Band B, a transmit band of Band B including a receive band of Band C. The switch circuit includes a switch switching connection between a common terminal and a first selection terminal, a switch switching connection between the common terminal and a second selection terminal, and a switch switching connection between the second selection terminal and a third selection terminal. The common terminal is connected to the transmit amplifier. The first selection terminal is connected to the transmit filter of Band A. The second selection terminal is connected to the transmit filter of Band B. The third selection terminal is connected to a receive path of Band C.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: May 10, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Kenji Tahara
  • Patent number: 11323146
    Abstract: An electronic device according to various embodiments of the present invention can comprise: a housing; a first antenna element positioned inside the housing or at a first position thereof; a second antenna element positioned inside the housing or at a second position separated from the first position thereof; and a wireless communication circuit positioned inside the housing and electrically coupled to the first antenna element and the second antenna element.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: May 3, 2022
    Inventor: Hyoseok Na
  • Patent number: 11310084
    Abstract: A physical layer transceiver for a wireline channel medium includes a host interface to a host device, a line interface to the medium, encoding/decoding circuitry for interfacing between the host device and the medium, and adaptive filter circuitry coupled to the encoding/decoding circuitry. The adaptive filter circuitry includes a plurality of filter taps, each corresponding to a segment of the medium, and capable of being powered ON and OFF separately from each other filter tap. Adaptive control circuitry can power ON a first subset, fewer than all the filter taps, corresponding to segments distributed along the medium, monitor powered-ON filter taps for occurrence of interference events, and upon detection of an interference event at a particular segment to which a particular powered-ON filter tap corresponds, power ON one or more additional filter taps corresponding to one or more segments in a vicinity of the particular segment.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: April 19, 2022
    Assignee: Marvell Asia Pte, Ltd.
    Inventors: David Shen, Oliver Weiss
  • Patent number: 11303321
    Abstract: A radio frequency (RF) front end for wireless communications, in particular for use in a half duplex (HD) and/or full duplex (FD) transceiver. The RF front end is based on a quadrature balanced power amplifier (QBPA). The RF front end includes an antenna port for outputting a transmit signal to and receiving a receive signal from an antenna, and a receive port for outputting the receive signal to a signal processing section. Further, the QBPA is configured to receive a transmit input signal at a first port, receive a cancellation input signal at a fourth port, and receive the receive signal at a second port coupled to the antenna port.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: April 12, 2022
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Dror Regev, Doron Ezri, Shimon Shilo