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9042854 Apparatus and methods for tuning a voltage controlled oscillator  
Apparatus and methods for tuning a voltage controlled oscillator (VCO) are provided. In one aspect, a method of auto-tuning in a phase-locked loop includes generating a VCO clock signal using a...
9020086 Clock data recovery circuit module and method for generating data recovery clock  
A clock data recovery circuit module including a clock recovery circuit, a frequency comparison circuit and a signal detecting circuit is provided. The clock recovery circuit is configured to...
9019018 Integrated circuit with an internal RC-oscillator and method for calibrating an RC-oscillator  
An integrated circuit (10) has an internal RC-oscillator (20) for providing an internal clock signal (CLI) having an adjustable oscillator frequency. The integrated circuit (10) further comprises...
9020011 Enabling RX signal path synchronization and alignment signals in a highly integrated TX RFIC  
A transmit (TX) signal path circuit in a multiple-input, multiple-output (MIMO) transceiver responsive to a digital front end (DFE) for generating receive (RX) path phase alignment signals is...
9020018 Systems for calibration of wireless electronic devices  
A calibration system may be provided for calibrating wireless communications circuitry in an electronic device during manufacturing. The calibration system may include data acquisition equipment...
9013245 Oscillators having arbitrary frequencies and related systems and methods  
Systems and methods for operating with oscillators configured to produce an oscillating signal having an arbitrary frequency are described. The frequency of the oscillating signal may be shifted...
8982974 OFDM clock recovery  
Receiver synchronization techniques (RST), contributing more accurate synchronization of receiver clock to OFDM composite frame combined with much faster acquisition time and better stability of...
8965301 Distance measurement between two nodes of a radio network  
A method includes transmitting, by a first node, a first carrier signal and receiving, from a second node, which receives the first carrier signal, a second carrier signal. The first node measures...
8965310 Modular frequency divider and mixer configuration  
A transmitter including a first mixer, a first frequency divider to divide a frequency of an input signal to generate a first signal, and a plurality of second frequency dividers to divide the...
8954017 Clock signal multiplication to reduce noise coupled onto a transmission communication signal of a communications device  
A communications device is disclosed that implements a phase-locked-loop to multiply a clock signal provided to a power management unit (PMU) by a variable integer value. Multiplying the PMU clock...
8928423 Narrow band receiver or transceiver  
A narrow band receiver or transceiver for processing electrical signals. The narrow band receiver or transceiver includes an amplifier, a voltage controlled oscillator and a tuning assembly...
8923790 Wireless communication receiver and method thereof  
A wireless communication receiver includes a circuit, an analog-to-digital converter (ADC) and a processing circuit. The circuit receives a wireless signal and outputs an analog signal according...
8903345 Hysteresis nonlinear state machine with overlapping thresholds for automatic frequency control  
A method and apparatus for non-linear frequency control tracking of a control loop of a voltage controlled oscillator (VCO) in a wireless mobile device receiver is provided. A channel metric based...
8902796 Power-efficient multi-mode transceiver synthesizer configurations  
Embodiments of the present disclosure provide power-efficient time division duplexing (TDD) mode configurations of frequency division duplexing (FDD) transceivers. Embodiments avoid time slotted...
8903030 Clock data recovery circuit with hybrid second order digital filter having distinct phase and frequency correction latencies  
A clock data recovery circuit (CDR) extracts bit data values from a serial bit stream without reference to a transmitter clock. A controllable oscillator produces a regenerated clock signal...
8896158 Variable capacitance circuit  
A variable capacitance circuit includes: a prescribed node, to which an alternate current signal with a reference potential as a center voltage is applied; a first capacitor connected to the...
8896384 Phase locked loop including a frequency change module  
A phase locked loop (PLL) includes a detector, a charge pump, a loop filter, a voltage controlled oscillator (VCO), a divider, and a frequency change module. The detector provides a phase...
8890635 Signal generator for a transmitter or a receiver, a transmitter and a receiver  
A signal generator for a transmitter or a receiver for transmitting or receiving RF-signals according to a given communication protocol includes an oscillator and a mismatch compensator. The...
8892060 Method for tuning a digital compensation filter within a transmitter, and associated digital compensation filter  
A method for tuning a digital compensation filter within a transmitter includes: obtaining at least one resistance-capacitance (RC) detection result, wherein the digital compensation filter...
8890625 Systems and methods for frequency synthesis to improve coexistence  
A frequency synthesizer for a WLAN transceiver is disclosed that may be used to generate 5.4 GHz and 2.4 GHz signals. The frequency synthesizer may be configured to minimize VCO pulling by using...
8884713 Method and apparatus of cancelling inductor coupling  
This invention compensates for the unintentional magnetic coupling between a first and second inductor of two different closely spaced inductors separated by a conversion circuit. A cancellation...
8874060 Radio frequency (RF) receiver with frequency planning and method therefor  
A radio frequency (RF) receiver with frequency planning includes an analog receiver, a digital processor, and a clock synthesizer. The analog receiver has an input for receiving an RF input...
8873693 Phase averaging-based clock and data recovery  
In one embodiment, a method includes adjusting a first frequency of a first clock signal based on a frequency difference between the first frequency and a reference clock signal frequency of a...
8867520 Using a network frequency reference to augment timing Synchronization in a wireless base station  
A method and an apparatus for augmenting timing synchronization in a base station using backhaul network frequency synchronization are provided. When in a first mode an external time epoch...
8849221 Direct conversion transmitter and communication system utilizing the same  
A direct-conversion transmitter including an oscillator, a frequency divider, a transmitter, and a filter is provided. The oscillator generates an oscillating signal with an original frequency....
8841973 Circuit arrangement for generation of radio frequency output signals which form a broadband frequency ramp  
A circuit arrangement for generation of radio frequency output signals which form a broadband frequency ramp, with a reference oscillator, a phase detector, a loop filter, a VC oscillator for...
8836434 Method and system for calibrating a frequency synthesizer  
A digital frequency synthesizer with an automatic calibration system. The digital frequency synthesizer is calibrated by initiating a coarse tuning operation to rapidly reach a preliminary...
8824612 Apparatuses, circuits, and methods for reducing metastability in data synchronization  
Apparatuses, circuits, and methods are disclosed for reducing or eliminating unintended operation resulting from metastability in data synchronization. In one such example apparatus, a sampling...
8804892 Frequency and phase acquisition of a clock and data recovery circuit without an external reference clock  
A clock and data recovery device receives a serial data stream and produces recovered clock and data signals. The clock and data recovery device operates over a range of frequencies and without...
8787864 Receiver IIP2 analog calibration  
Techniques for performing analog calibration of a receiver to optimize a second-order input intercept point (IIP2). In an aspect, a signal generator modeling an interferer is coupled to an...
8781428 Frequency synthesizer  
A frequency synthesizer includes a controlled oscillator configured to extend a temperature range and phase noise of the synthesizer without compromising the frequency coverage of the synthesizer....
8774016 Ethernet communication device with reduced EMI  
A network device includes a physical layer transceiver configured to receive incoming data on a data link at an input clock rate and to store the incoming data in a buffer. The physical layer...
8768278 Switching a PLL clock source to reduce wireless communication interference  
Adjusting a phase locked loop (PLL) clock source to reduce wireless communication (e.g., radio frequency (RF)) interference within a device. The PLL may be included in a high speed serial...
8761088 Wireless base station apparatus and wireless communication method  
A wireless base station apparatus communicates with first terminal devices belonging to the present cell by means of IDMA. The apparatus receives signals sent from the first terminal devices and...
8755466 Receiver, receiving method, and use of an in-phase signal and a quadrature-phase signal  
A receiver, receiving method, and use of an in-phase signal and a quadrature-phase signal is provided, that includes a mixer in the receiving path, an oscillator whose output is connected to a...
8750926 System and method for coordinating multiple radio transceivers within the same device platform  
A wireless device having a central control entity that coordinates multiple radio transceivers co-located within the same device platform to mitigate coexistence interference. The wireless device...
8744020 Frequency offset estimation  
A frequency offset of a received signal comprising a number of subsequently received data symbols is estimated. A first estimate is determined from a calculated change in phase of the received...
8736326 Frequency synthesizer and frequency synthesis method thereof  
A frequency synthesizer and a frequency synthesis method thereof are provided. The frequency synthesizer includes a phase-locked loop unit, a voltage-controlled oscillating unit, and a frequency...
8712360 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS  
A system includes a first clock module, a global positioning system (GPS) module, a phase-locked loop (PLL) module, a cellular transceiver, and a baseband module. The first clock module generates...
8706052 Portable wideband antenna-radiated signal generator  
A portable wideband harmonic signal generator includes circuitry for generating a signal having a selected fundamental frequency, for producing a signal having a harmonic series of the selected...
8699985 Frequency generator including direct digital synthesizer and signal processor including the same  
A signal processor includes a frequency generator that employs a direct digital synthesizer (DDS) to generate a first local oscillator (LO) signal with a variable first LO frequency. The signal...
8699979 Calibration of a receiver for channel equalization using a transmitter  
Aspects of a method and system for compensating for using a transmitter to calibrate a receiver for channel equalization are provided. Various embodiments of the invention may be applicable...
8687738 Circuits and methods using a majority vote  
A clock data recovery circuit includes a phase detector circuit, a majority voter circuit, and a phase shift circuit. The phase detector circuit is operable to compare a phase of a periodic signal...
8680943 DCS/WCDMA dual frequency synthesizer and a general dual frequency synthesizer  
The invention discloses a DCS/WCDMA dual frequency multiplexer. On one hand, the multiplexer utilizes distributed parameter type capacitors in place of conventionally used capacitors. On the other...
8676146 Electronic apparatus, dispersion adjustment method of IC internal component section of electronic apparatus and IC  
An electronic apparatus includes: a first integrated circuit including an internal component section capable of being adjusted with adjustment data, a nonvolatile memory in which beforehand...
8675800 Synchronizing circuit, synchronizing method, and receiving system  
Disclosed herein is a synchronizing circuit including: a first PLL circuit; a second PLL circuit; a first output circuit; a second output circuit; a first detection circuit; a second detection...
8670737 Digital delta Sigma modulator and applications thereof  
A digital delta sigma modulator includes an input integration stage, a resonating stage, a quantizer, and a plurality of feedback paths operably coupled to the quantizer, the input integration...
8665989 Phase shifter, wireless communication apparatus, and phase control method  
Disclosed are a phase shifter, a wireless communication apparatus, and a phase control method in which power consumption is reduced. A phase shifter includes a 90° step phase shifter (17) and a...
8655296 Frequency synthesizer and related method for generating wideband signals  
A frequency synthesizer includes a phase-locked loop circuit having an output. A frequency divider is connected to the output of the phase-locked loop circuit for receiving the signal therefrom...
8644783 Methods and systems for determining an offset term for a synthesizer signal, and methods and systems for producing a phase-corrected digital signal  
A fractional-N PLL synthesizer has an up-down counter counting up for positive edges of a frequency-divided signal produced by a frequency divider with a fractional divide ratio in a feedback path...