Frequency generator arrangement
    2.
    发明授权

    公开(公告)号:US11984848B2

    公开(公告)日:2024-05-14

    申请号:US17310225

    申请日:2021-02-04

    申请人: 2pi-Labs GmbH

    摘要: The present invention relates to a frequency generator arrangement having an oscillator for generating an oscillator signal having an oscillator frequency and an oscillator output for outputting the oscillator signal, the frequency generator arrangement further comprising a frequency multiplier coupled and/or connected to an oscillator output for generating an output signal of the frequency generator arrangement having a multiplier frequency corresponding to a multiple of the oscillator frequency, wherein the frequency multiplier comprises a frequency multiplier core directly causative of the frequency multiplication, the frequency multiplier core having a power supply, and the frequency generator arrangement having a control input for controlling the power supply to the frequency multiplier core, whereby an output power of the output signal is adjustable by controlling the power supply to the frequency multiplier core.

    System with magnetic film for reducing passive intermodulation

    公开(公告)号:US11848471B2

    公开(公告)日:2023-12-19

    申请号:US18245240

    申请日:2021-09-10

    摘要: A wireless communication system includes a transmitter configured to transmit at least first and second radio waves having respective different frequencies F1 and F2, an electrically conductive first passive substantially linear medium, an electrically conductive first passive substantially nonlinear medium disposed proximate the first passive substantially linear medium, and a first magnetic film covering at least a portion of the first passive substantially linear medium. When the transmitter transmits the first and second radio waves, the first passive substantially linear and nonlinear media receive the first and second radio waves and generate first and second signals propagating therein at the respective frequencies F1 and F2. At least one intermodulation signal having a frequency F3 equal to nF1+mF2, where m and n positive or negative integers, is generated in the first passive substantially nonlinear medium. The first magnetic film reduces the at least one intermodulation signal by at least 2 dB.

    PHYSIOLOGICAL SIGNAL DETECTION SYSTEM
    6.
    发明公开

    公开(公告)号:US20230327606A1

    公开(公告)日:2023-10-12

    申请号:US17984644

    申请日:2022-11-10

    IPC分类号: H03C1/00 H03C3/09

    CPC分类号: H03C1/00 H03C3/09 H03C5/00

    摘要: A physiological signal detection system is disclosed. The physiological signal detection system includes a measurement module, a signal processing module, and a microcontroller. The measurement module measures a subject in a non-contact manner to obtain a frequency modulation signal. The signal processing module is electrically connected to the measurement module, and the signal processing module includes a Mohr discriminator, which is used to demodulate the frequency modulation signal to obtain a physiological signal. The microcontroller is electrically connected to the signal processing module for converting and obtaining a digital physiological signal.

    Generation of fast frequency ramps

    公开(公告)号:USRE49519E1

    公开(公告)日:2023-05-02

    申请号:US17313352

    申请日:2021-05-06

    摘要: A circuit includes an RF oscillator coupled in a phase-locked loop. The phase-locked loop is configured to receive a digital input signal, which is a sequence of digital words, and to generate a feedback signal for the RF oscillator based on the digital input signal. The circuit further includes a digital-to-analog conversion unit that includes a pre-processing stage configured to pre-process the sequence of digital words and a digital-to-analog-converter configured to convert the pre-processed sequence of digital words into the analog output signal. The circuit includes circuitry configured to combine the analog output signal and the feedback signal to generate a control signal for the RF oscillator. The pre-processing stage includes a word-length adaption unit configured to reduce the word-lengths of the digital words and a sigma-delta modulator coupled to the word-length adaption unit downstream thereof and configured to modulate the sequence of digital words having reduced word-lengths.

    Polar transmitter with feedthrough compensation

    公开(公告)号:US11516054B2

    公开(公告)日:2022-11-29

    申请号:US17351779

    申请日:2021-06-18

    摘要: A circuit includes a polar transmitter to generate a radio frequency output from amplitude and phase signal components. The polar transmitter includes an amplifier to combine amplitude and phase signal components. A processor is coupled to the polar transmitter to provide the amplitude and phase signal components. The processor includes: a digital modulation circuit to generate a modulated digital signal including in-phase and quadrature signal components and a correction circuit to calculate and apply a complex digital offset for local oscillator feedthrough of the amplifier. The complex digital offset includes an in-phase offset correction factor and a quadrature offset correction factor.

    Electronic device and method for transmitting or receiving signals of plurality of frequency bands

    公开(公告)号:US11456797B2

    公开(公告)日:2022-09-27

    申请号:US17023955

    申请日:2020-09-17

    摘要: The disclosure relates to a device and a method for efficiently detecting signals when signals of a plurality of frequency bands are simultaneously transmitted and/or received.
    An electronic device according to various embodiments of the disclosure includes: a processor, a plurality of couplers configured to detect signals of a plurality of frequency bands being simultaneously transmitted and/or received, a plurality of first switches connected to at least parts of the plurality of couplers and configured to adjust directions of the signals being detected, a plurality of second switches connected to the first switches and configured to block signals being output from the first switches, and a third switch connected to the plurality of second switches and configured to select one of the plurality of second switches, wherein the processor is configured to control the first switches, the second switches, and the third switch to detect one of the signals being simultaneously transmitted and/or received.