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    • 1. 发明申请
    • A DIFFERENTIAL CHARGE PUMP WITH EXTENDED OUTPUT CONTROL VOLTAGE RANGE
    • 具有扩展输出控制电压范围的差分电荷泵
    • WO2018080687A1
    • 2018-05-03
    • PCT/US2017/053269
    • 2017-09-25
    • QUALCOMM INCORPORATED
    • BANERJEE, AnirbanRASMUS, Todd Morgan
    • H03L7/089H03L7/093
    • H02M3/07G06F1/04H03L7/0891H03L7/0895H03L7/0896H03L7/093H03L7/099H03L2207/06
    • One aspect of the present disclosure relates to a method for operating a charge pump. The method includes comparing a drain voltage of a current sink transistor of the charge pump with a drain voltage of a current reference transistor, and adjusting a gate bias voltage of the current sink transistor and the current reference transistor in a direction that reduces a difference between the drain voltage of the current sink transistor and the drain voltage of the current reference transistor. The method also includes comparing a common-mode voltage of a loop filter with a reference voltage, and adjusting a gate bias voltage of a current source transistor of the charge pump in a direction that reduces a difference between the common-mode voltage of the loop filter and the reference voltage.
    • 本公开的一个方面涉及一种用于操作电荷泵的方法。 该方法包括将电荷泵的电流吸收晶体管的漏极电压与电流基准晶体管的漏极电压进行比较,并且在减小电流吸收晶体管与电流基准晶体管之间的差异的方向上调节电流吸收晶体管和电流基准晶体管的栅极偏置电压 电流吸收晶体管的漏极电压和电流参考晶体管的漏极电压。 该方法还包括将环路滤波器的共模电压与参考电压进行比较,并且在降低环路的共模电压之间的差的方向上调节电荷泵的电流源晶体管的栅极偏置电压 滤波器和参考电压。
    • 2. 发明申请
    • LOCAL OSCILLATOR SIGNAL GENERATION USING OPPORTUNISTIC SYNTHESIZER TO CLOCK DIGITAL SYNTHESIS
    • 用机械合成器实现数字综合的局部振荡信号发生
    • WO2018057153A1
    • 2018-03-29
    • PCT/US2017/047100
    • 2017-08-16
    • INTEL CORPORATION
    • KUSHNIR, IgalHOROVITZ, GilZUR, Sarit
    • H03L7/08H03L7/099
    • H04B1/38H03B21/00H03B21/01H03L7/08H03L7/099H03L2207/06H04B17/11H04L27/205
    • Control circuitry for use in generating a local oscillator (LO) signal is provided. Synthesizer control circuitry is configured to control synthesizer circuity to generate an analog oscillator signal having a first frequency at which phase noise is minimized. DS control circuitry is configured to generate a control word or message to cause DS circuitry to generate a digital DS signal having a desired frequency when the DS circuitry is clocked by the oscillator signal having the first frequency. The desired frequency is proportional to the LO signal frequency. The digital DS signal generated by the DS circuitry is used to generate the LO signal. Thus the first frequency used to clock the DS circuitry is selected to optimize the oscillator rather than having some relationship to the LO frequency. In addition, a single synthesizer may be used in order to simultaneously generate many LO signals.
    • 提供用于产生本地振荡器(LO)信号的控制电路。 合成器控制电路被配置为控制合成器电路以产生具有第一频率的模拟振荡器信号,在该第一频率处相位噪声被最小化。 DS控制电路被配置为当DS电路由具有第一频率的振荡器信号计时时,生成控制字或消息以使DS电路生成具有期望频率的数字DS信号。 所需频率与LO信号频率成正比。 由DS电路生成的数字DS信号用于生成LO信号。 因此,选择用于DS电路时钟的第一个频率来优化振荡器,而不是与LO频率有某种关系。 另外,可以使用单个合成器来同时产生许多LO信号。
    • 3. 发明申请
    • OSCILLATOR CROSSTALK COMPENSATION
    • 振荡器CROSSTALK补偿
    • WO2015162055A1
    • 2015-10-29
    • PCT/EP2015/058283
    • 2015-04-16
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    • NILSSON, Magnus
    • H03L7/099
    • H03L7/085H03B5/1234H03C3/095H03C3/14H03K3/0315H03L7/06H03L7/0802H03L7/099H03L7/23H03L2207/06
    • Systems and methods for mitigating crosstalk between controlled oscillators of Phase-Locked Loops (PLLs) are disclosed. In one embodiment, a system includes a first PLL including a first controlled oscillator and a second PLL. The system further includes a compensation signal generator adapted to generate a compensation signal at an offset frequency that is approximately equal to an offset between output frequencies of the first and second PLLs and apply the compensation signal to the first controlled oscillator such that the output signal of the first controlled oscillator is modulated by the compensation signal. An amplitude and a phase of the compensation signal are such that, when the compensation signal is applied to the first controlled oscillator, a crosstalk signal output by the first controlled oscillator resulting from crosstalk from the second controlled oscillator of the second PLL to the first controlled oscillator of the first PLL is mitigated.
    • 公开了用于减轻锁相环(PLL)的受控振荡器之间的串扰的系统和方法。 在一个实施例中,系统包括包括第一受控振荡器和第二PLL的第一PLL。 该系统还包括补偿信号发生器,其适于产生一个偏移频率的补偿信号,该补偿信号近似等于第一和第二PLL的输出频率之间的偏移量,并将补偿信号施加到第一受控振荡器,使得输出信号 第一个受控振荡器由补偿信号调制。 补偿信号的振幅和相位使得当补偿信号被施加到第一受控振荡器时,由第一受控振荡器输出的串扰信号由来自第二PLL的第二受控振荡器的串扰导致到第一受控振荡器 第一个PLL的振荡器得到缓解。
    • 4. 发明申请
    • SINGLE INSERTION TRIMMING OF HIGHLY ACCURATE REFERENCE OSCILLATORS
    • 高精度参考振荡器的单插入调整
    • WO2014130525A1
    • 2014-08-28
    • PCT/US2014/017098
    • 2014-02-19
    • SI-WARE SYSTEMS
    • ELKHOLY, AhmedAHMED, Ayman
    • H03L7/00
    • H03L1/026H03L1/027H03L1/04H03L7/085H03L7/091H03L7/093H03L7/099H03L7/16H03L2207/06H03L2207/50
    • A highly integrated monolithic self-compensated oscillator (SCO) with high frequency stability versus temperature variations is described, together with a cost effective single insertion point trimming (SPT) algorithm. The SPT is utilized to adjust the phase and frequency of the SCO to meet frequency stability versus temperature and frequency accuracy requirements for a reference clock.. The techniques used in the SPT algorithm provide a robust, fast and low testing cost for the SCO. Moreover, the concepts and techniques utilized in the SCO SPT can be used effectively for any temperature compensated oscillator (TCO) including TCXO, MEMS, FBAR and RC oscillators. Additionally, the described SPT algorithm is capable of measuring the temperature sensitivity of any oscillator, estimating suitable temperature compensation parameters and adjusting the oscillator frequency to the required value simultaneously.
    • 描述了具有高频稳定性与温度变化的高度集成的单片自补偿振荡器(SCO),以及成本有效的单插入点微调(SPT)算法。 SPT用于调整SCO的相位和频率,以满足参考时钟的频率稳定性与温度和频率精度要求。SPT算法中使用的技术为SCO提供了稳健,快速和低成本的测试成本。 此外,SCO SPT中使用的概念和技术可以有效地用于包括TCXO,MEMS,FBAR和RC振荡器在内的任何温度补偿振荡器(TCO)。 另外,所描述的SPT算法能够测量任何振荡器的温度灵敏度,估计合适的温度补偿参数并将振荡器频率同时调整到所需值。
    • 5. 发明申请
    • 位相ロック回路
    • 相锁电路
    • WO2012104933A1
    • 2012-08-09
    • PCT/JP2011/003238
    • 2011-06-08
    • パナソニック株式会社木下 雅善曽川 和昭武田 憲明
    • 木下 雅善曽川 和昭武田 憲明
    • H03L7/099H03L7/095
    • H03L7/113H03L7/095H03L7/099H03L7/102H03L2207/06
    •  高速クロック信号を出力する位相ロック回路において、位相比較回路60、チャージポンプ回路61、ループフィルタ回路62、電圧制御発振回路63、分周回路64及び発振制限回路1を備える。前記発振制限回路1は、前記電圧制御発振回路63の発振周波数の範囲を制限する。発振制限コントロール回路4は、本位相ロック回路が非定常状態にあるときには、前記発振制限回路1の機能を有効にし、一方、本位相ロック回路が定常状態にあるときには、発振制限回路1の機能を停止させて、消費電力を低減する。従って、確実な位相ロックが実現されると共に、位相ロック状態での消費電流が有効に削減される。
    • 提供一种输出高速时钟信号的相位锁定电路,包括:相位比较电路(60); 电荷泵电路(61); 环路滤波器电路(62); 电压控制振荡电路(63); 分频电路(64); 和振荡限制电路(1)。 振荡限制电路(1)限制了电压控制振荡电路(63)的振荡频率的范围。 当锁相电路处于非稳态时,振荡限制控制电路(4)能够实现振荡限制电路(1)的功能。 另一方面,当锁相电路处于稳定状态时,振荡限制控制电路(4)通过停止振荡限制电路(1)的功能来降低功耗。 因此,实现了可靠的相位锁定,并且有效地降低了锁相状态下的电流消耗。
    • 10. 发明申请
    • DYNAMIC BIASING OF A VCO IN A PHASE-LOCKED LOOP
    • 在锁相环中的VCO的动态偏移
    • WO2009055622A2
    • 2009-04-30
    • PCT/US2008081033
    • 2008-10-23
    • QUALCOMM INCSUN BOSAHOTA GURKANWAL SINGHWU YUE
    • SUN BOSAHOTA GURKANWAL SINGHWU YUE
    • H03L7/10H03L7/08H03L7/093H03L7/107
    • H03L7/197H03J7/065H03L1/00H03L7/0802H03L7/0898H03L7/093H03L7/107H03L2207/06
    • A local oscillator includes a phase-locked loop. The phase-locked loop includes voltage controlled oscillator (VCO) and a novel VCO control circuit. The VCO control circuit may be programmable and configurable. In one example, an instruction is received onto the VCO control circuit to change the power state of the VCO. The instruction is issued by other circuitry in response to a detected change in RF channel conditions (for example, a change in a signal-to-noise determination) in a cellular telephone. In response, the VCO control circuit outputs control signals that gradually widen the loop bandwidth of the PLL, then gradually change the VCO bias current to change the VCO power state, and then narrow the loop bandwidth of the PLL back to its original bandwidth. The entire process of widening the PLL bandwidth, changing the VCO power state, and narrowing the PLL bandwidth occurs while the PLL remains locked.
    • 本地振荡器包括锁相环。 锁相环包括压控振荡器(VCO)和新型VCO控制电路。 VCO控制电路可以是可编程和可配置的。 在一个示例中,在VCO控制电路上接收指令以改变VCO的功率状态。 响应于在蜂窝电话中的RF信道条件(例如,信噪比确定的改变)检测到的变化,由其它电路发出指令。 作为响应,VCO控制电路输出逐渐拓宽PLL环路带宽的控制信号,然后逐渐改变VCO偏置电流,改变VCO功率状态,然后将PLL的环路带宽缩小回原来的带宽。 当PLL保持锁定时,会发生整个PLL带宽扩大,改变VCO功率状态和缩小PLL带宽的过程。