ULTRA LOW PHASE NOISE SIGNAL SOURCE

    公开(公告)号:CA2879231A1

    公开(公告)日:2014-01-23

    申请号:CA2879231

    申请日:2013-07-08

    Abstract: An apparatus and method for providing an output signal. The apparatus comprises an input for receiving a reference signal, an oscillator for providing an output signal, and an offset signal generator for frequency multiplying the reference signal to generate an offset signal that has a plurality of frequency products in a plurality of frequency bands. The apparatus further includes a mixer for mixing the offset signal with the output signal to produce a combined signal, an offset frequency selector for controllably selecting a frequency band of the offset signal, and a difference detector for detecting a difference between the reference signal and the combined signal and for providing a control signal to the oscillator based on the detected difference.

    FREQUENCY DETERMINATION CIRCUIT AND METHOD

    公开(公告)号:CA2879226A1

    公开(公告)日:2014-01-23

    申请号:CA2879226

    申请日:2013-07-08

    Abstract: Circuits and methods for identifying or verifying frequencies are disclosed herein. A frequency verification circuit comprises: an input port for receiving an input signal; a phase frequency difference detector for determining a difference in phase and frequency between the input signal and a feedback signal and for providing a control signal based on the detected difference; a voltage controlled crystal oscillator for producing an output signal based on the control signal; and a feedback loop including a feedback divider for frequency dividing the output signal by a factor R to produce the feedback signal, the feedback divider being programmable to a plurality of values of the factor R to correspond to a plurality of different test frequencies.

    ULTRA LOW PHASE NOISE SIGNAL SOURCE
    4.
    发明公开
    ULTRA LOW PHASE NOISE SIGNAL SOURCE 审中-公开
    具有非常低相位噪声源

    公开(公告)号:EP2873152A4

    公开(公告)日:2016-03-09

    申请号:EP13820321

    申请日:2013-07-08

    CPC classification number: H03L7/20 H03L7/185 H03L2207/12

    Abstract: An apparatus and method for providing an output signal. The apparatus comprises an input for receiving a reference signal, an oscillator for providing an output signal, and an offset signal generator for frequency multiplying the reference signal to generate an offset signal that has a plurality of frequency products in a plurality of frequency bands. The apparatus further includes a mixer for mixing the offset signal with the output signal to produce a combined signal, an offset frequency selector for controllably selecting a frequency band of the offset signal, and a difference detector for detecting a difference between the reference signal and the combined signal and for providing a control signal to the oscillator based on the detected difference.

    FREQUENCY DETERMINATION CIRCUIT AND METHOD
    5.
    发明公开
    FREQUENCY DETERMINATION CIRCUIT AND METHOD 审中-公开
    频率确定电路及其方法

    公开(公告)号:EP2872904A4

    公开(公告)日:2016-04-06

    申请号:EP13819817

    申请日:2013-07-08

    CPC classification number: G01R23/02 H03L7/095 H03L7/183

    Abstract: Circuits and methods for identifying or verifying frequencies are disclosed herein. A frequency verification circuit comprises: an input port for receiving an input signal; a phase frequency difference detector for determining a difference in phase and frequency between the input signal and a feedback signal and for providing a control signal based on the detected difference; a voltage controlled crystal oscillator for producing an output signal based on the control signal; and a feedback loop including a feedback divider for frequency dividing the output signal by a factor R to produce the feedback signal, the feedback divider being programmable to a plurality of values of the factor R to correspond to a plurality of different test frequencies.

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