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公开(公告)号：US20180183424A1
公开(公告)日：2018-06-28
申请号：US15482652
申请日：2017-04-07
CPC分类号： H03K7/08
摘要： Techniques for providing an enhanced resonant circuit amplifier are described herein. Using a capacitor to couple the drive to the resonant circuit can be problematic because the current flows the same direction with every energy burst, which causes the coupling capacitor to charge up and stop injecting energy into the resonant circuit. To solve this issue, embodiments disclosed herein add a burst of energy once every half cycle. This reduces distortion in the resonant energy. A second benefit is the ability to “push in” and “pull out” energy from the resonant circuit, which can prevent the capacitor from charging up and allow a resonant circuit amplifier to continually produce a symmetric, stable output. In addition, a controller can dynamically modify a number of aspects of an output, e.g., an amplitude and/or a DC bias, by modifying the duty cycle of an input signal.
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公开(公告)号：US20180159470A1
公开(公告)日：2018-06-07
申请号：US15831572
申请日：2017-12-05
申请人： MaxLinear, Inc.
发明人： Xuefeng Chen , Hosein Zareie
CPC分类号： H03B1/04 , H03B5/32 , H03B5/362 , H03B5/364 , H03B2202/044 , H03B2202/05
摘要： Systems and methods are provided for generating reference signals with high interference immunity. A signal source may generate reference signals having a particular reference frequency based on characteristics of the source of the reference signals, for use in driving at least one component in a system. One or more processing may then process the generated reference signals, based on particular frequency positions relative to the particular reference frequency and other operations and/or components of the system. The processing may include filtering at the particular frequency positions. The particular frequency positions may correspond to the harmonics positions of the particular reference frequency. The signal source may be a crystal oscillator.
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公开(公告)号：US20180138859A1
公开(公告)日：2018-05-17
申请号：US15784660
申请日：2017-10-16
发明人： Eun-seok SHIN , Se-ra AN , Jae-jin PARK , Seung-hoon LEE , Do-hyung KIM , Min-young KANG
CPC分类号： H03B1/04 , G01N29/022 , G01N29/036 , G01N29/2437 , G01N29/32 , G01N29/4427 , G01N29/4463 , G01N2291/014 , G01N2291/021 , G01N2291/0255 , G01N2291/0256 , H03B5/24 , H03B5/326 , H03B5/364 , H03H9/02007 , H03K21/026
摘要： A resonator oscillator that may be included in a gas sensing system may include an oscillator that may be electrically connected to an external resonator through a conductive line. The oscillator may generate an oscillating signal having a frequency corresponding to a resonance frequency of the external resonator in an oscillating path. A spurious resonance removal circuit on the oscillating path may remove spurious resonance caused by the conductive line from the oscillating path. A gas sensing system may include the oscillator, a resonator that includes a sensor configured to sense a gas, and a frequency counting logic that receives the oscillating signal and a reference clock signal, performs a counting operation on the oscillating signal according to a logic state of the reference clock signal to generate a counted value, and generate a gas sensing output indicating a sensed gas based on the counted value.
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公开(公告)号：US20180123512A1
公开(公告)日：2018-05-03
申请号：US15572783
申请日：2016-03-17
发明人： Tomonori ABE , Masahiro MIZOGUCHI
摘要： To reduce interference between wiring patterns at an oscillator that outputs a plurality of oscillation signals. An oscillator includes an IC configured to output a plurality of oscillation signals using a crystal resonator, and a base plate connected to the IC. The base plate includes a crystal resonator land and a crystal resonator land that are electrically connected to the crystal resonator, a power source land electrically connected to a power source, and a first output land positioned between the crystal resonator land and the power source land to output a first oscillation signal from the IC to an outside, and a wiring pattern from the first output land passes through between the crystal resonator land and the crystal resonator land.
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公开(公告)号：US20180076765A1
公开(公告)日：2018-03-15
申请号：US15638183
申请日：2017-06-29
CPC分类号： H03B1/04 , H03B5/1212 , H03B5/1228 , H03B5/124 , H03B27/00 , H03B2200/0054 , H03B2200/007 , H03B2200/009
摘要： Certain aspects of the present disclosure provide methods and apparatus for reducing phase noise in voltage-controlled oscillators (VCOs). One example VCO generally includes a first resonant circuit comprising an inductor and a first variable capacitive element coupled in parallel with the inductor; and a second variable capacitive element coupled to a center tap of the inductor and further coupled to a reference voltage, wherein the center tap of the inductor is further coupled to a voltage source.
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公开(公告)号：US09871539B2
公开(公告)日：2018-01-16
申请号：US15069880
申请日：2016-03-14
申请人： MEDIATEK INC.
发明人： Chien-Hua Wu , Yan-Bin Luo
IPC分类号： H03B1/04 , H04L25/00 , H04B1/04 , H03K19/0185 , H04L25/02 , H03K19/0175
CPC分类号： H04B1/04 , H03K19/017545 , H03K19/018578 , H03K19/018585 , H04L25/00 , H04L25/0272
摘要： A driver circuit for receiving a data input and generating an output signal to a termination element according to at least the first data input is provided. The driver circuit includes a first output terminal, a current mode drive unit and a voltage mode drive unit. The current mode drive unit is arranged for selectively outputting a first reference current from the first output terminal to the termination element according to the first data input, and selectively receiving the first reference current through the first output terminal according to the first data input. The voltage mode drive unit is arranged for coupling one of a first reference voltage and a second reference voltage different from the second reference voltage to the first output terminal according to the first data input.
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公开(公告)号：US20170324484A1
公开(公告)日：2017-11-09
申请号：US15491123
申请日：2017-04-19
申请人： INTEL IP CORPORATION
发明人： Yossi Saada , Christoph Schultz , Ron Rotstein
CPC分类号： H04B15/02 , H02J7/025 , H02J50/12 , H03B1/04 , H04B1/10 , H04B1/1027 , H04B5/0037
摘要： The disclosure relates to a mobile device, comprising: a radio receiver configured to receive a radio signal; a power receiving unit (PRU) configured to receive a wireless charging signal from a power transmission unit (PTU) configured to charge the mobile device; a wireless broadcast receiver configured to receive a harmonic of the wireless charging signal during charging of the mobile device; a frequency manager configured to scan for a frequency of the harmonic and to detect a fundamental frequency of the wireless charging signal based on the scanned harmonic; and a mitigation module configured to mitigate a harmonic content of the wireless charging signal in the received radio signal based on the detected fundamental frequency of the wireless charging signal.
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公开(公告)号：US20170077871A1
公开(公告)日：2017-03-16
申请号：US15341640
申请日：2016-11-02
CPC分类号： H03B1/04 , H03B5/1212 , H03B5/1215 , H03B5/1221 , H03B5/1228 , H03B5/1231 , H03B5/1265 , H03B2200/009 , H03K3/013
摘要： An integrated electronic circuit is provided. The integrated electronic circuit includes a transconductance cell formed from transconductance cell devices. The integrated electronic circuit further includes active and passive decoupling circuits. The integrated electronic circuit also includes an oscillator having a tank that is direct current decoupled from the transconductance cell devices using the active and passive decoupling circuits to increase voltage swing and decrease phase noise of the oscillator.
摘要翻译： 提供集成电子电路。 集成电子电路包括由跨导单元器件形成的跨导单元。 集成电子电路还包括有源和无源去耦电路。 该集成电子电路还包括一个振荡器，该振荡器具有使用有源和无源去耦电路与跨导单元器件分离的直流电流，以增加电压摆幅并降低振荡器的相位噪声。
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公开(公告)号：US20160211801A1
公开(公告)日：2016-07-21
申请号：US15086764
申请日：2016-03-31
申请人： Broadcom Corporation
CPC分类号： H03B1/04 , H03B5/1215 , H03B5/1228 , H03B5/1243 , H03B5/1262 , H03B5/1293 , H03B5/1296 , H03B5/1852 , H03B27/00 , H03B2200/0048 , H03B2200/0052 , H03B2200/0074
摘要： A voltage controlled oscillator (VCO) with low phase noise and a sharp output spectrum is desirable. The present disclosure provides embodiments of LC tank VCOs that generate output signals with less phase noise compared with conventional LC tank VCOs, while at the same time limiting additional cost, size, and/or power. The embodiments of the present disclosure can be used, for example, in wired or wireless communication systems that require low-phase noise oscillator signals for performing up-conversion and/or down-conversion.
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公开(公告)号：US09312807B2
公开(公告)日：2016-04-12
申请号：US14561799
申请日：2014-12-05
申请人： Broadcom Corporation
CPC分类号： H03B1/04 , H03B5/1215 , H03B5/1228 , H03B5/1243 , H03B5/1262 , H03B5/1293 , H03B5/1296 , H03B5/1852 , H03B27/00 , H03B2200/0048 , H03B2200/0052 , H03B2200/0074
摘要： A voltage controlled oscillator (VCO) with low phase noise and a sharp output spectrum is desirable. The present disclosure provides embodiments of LC tank VCOs that generate output signals with less phase noise compared with conventional LC tank VCOs, while at the same time limiting additional cost, size, and/or power. The embodiments of the present disclosure can be used, for example, in wired or wireless communication systems that require low-phase noise oscillator signals for performing up-conversion and/or down-conversion.
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