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    • 1. 发明公开
    • 분수형 주파수 합성기에 적합한 락 디텍팅 장치 및 방법
    • 用于分段频率合成器的锁定检测装置和方法
    • KR1020160090438A
    • 2016-08-01
    • KR1020150009967
    • 2015-01-21
    • (주)에프씨아이
    • 문제철황명운
    • H03L7/095H03L7/193
    • H03L7/095H03L7/1976H03L7/193
    • 분수형주파수합성기에적합한락 디텍팅장치및 방법을개시한다. 본실시예의일 측면에의하면, 분수형주파수합성기(Fractional-N Frequency Synthesizer)의락 디텍터(Lock Detector)에있어서, 상기락 디텍터는, 분수비율모듈레이터의출력값을이용하여 N분주기출력주파수클럭을지연시키는지연부; 기준주파수클럭과상기지연부에의해지연된 N분주기출력주파수클럭을비교하여락 검출신호를출력하는락 검출부; 상기락 검출신호를입력받을때마다카운팅을수행하는카운터; 및상기카운터의카운팅횟수를근거로하여락 확인신호를출력하도록지시하는제어부를포함하는것을특징으로하는락 디텍터를제공한다.
    • 公开了一种适用于分数N频率合成器的锁定检测器及其锁定检测方法。 根据本发明实施例的分数N频率合成器的锁定检测器包括:延迟单元,用于通过使用分数比调制器的输出值来延迟分数N分频器的输出频率时钟; 锁定检测单元,用于通过将标准频率时钟与延迟单元延迟的分数N分频器的输出频率时钟进行比较来输出锁定检测信号; 每当锁定检测信号被输入时执行计数的计数器; 以及控制单元,用于根据来自计数器的计数次序输出锁定确认信号。
    • 8. 发明公开
    • 무선 통신 디바이스에서의 스퍼 완화에 대한 발진기 신호 발생
    • 振荡器信号发生在无线通信设备中的缓和
    • KR1020100052562A
    • 2010-05-19
    • KR1020107007882
    • 2008-09-11
    • 퀄컴 인코포레이티드
    • 김홍선김진욱장강던워스제레미다렌팔스티모시폴
    • H03L7/107H03L7/193H03L7/197
    • H03L7/193H03L7/107H03L7/1976
    • Techniques for generating oscillator signals in a wireless communication device are described. A phase-locked loop (PLL) may be used to generate an oscillator signal for a selected frequency channel. Different PLL settings may be used for the blocks in the PLL for different frequency channels. The different PLL settings may be for different PLL loop bandwidths, different amounts of charge pump current, different frequency equations associated with different sets of high and low divider ratios, different frequency division schemes associated with different prescaler ratios and/or different integer divider ratios, high side or low side injection for a super-heterodyne receiver or transmitter, and/or different supply voltages for one or more circuit blocks such as an oscillator. A suitable set of PLL settings may be selected for each frequency channel such that adverse impact due to spurs can be mitigated.
    • 描述了在无线通信设备中产生振荡器信号的技术。 可以使用锁相环(PLL)来产生所选频道的振荡器信号。 对于不同的频率通道,PLL中的块可能使用不同的PLL设置。 不同的PLL设置可能是针对不同的PLL环路带宽,不同的电荷泵浦电流量,与不同的高和低分频比组相关的不同频率方程,与不同的预分频比和/或不同的整数分频比相关的不同分频方案, 用于超外差接收器或发射器的高侧或低侧注入,和/或用于一个或多个电路块(例如振荡器)的不同电源电压。 可以为每个频道选择合适的一组PLL设置,从而可以减轻由于刺激引起的不利影响。
    • 9. 发明公开
    • 위상-스위칭 듀얼 모듈러스 프리스케일러 및 주파수 합성기
    • 相位切换双模块预分频器
    • KR1020060090695A
    • 2006-08-14
    • KR1020067006374
    • 2004-09-28
    • 에스티 에릭슨 에스에이 엔 리퀴데이션
    • 리나에르츠도미니쿠스엠더블유파블로빅네나드미스트리케탄
    • H03L7/16H03L7/193H03K23/66
    • H03K23/667H03K23/662H03L7/193
    • A phase-switching dual modulus prescaler having a dual modulus divider is provided. Said divider comprises a first and second divide-by-2 circuit (A;B), wherein said second divide-by-2 circuit (B) is coupled to the output of said first divide-by-2 circuit (A) and at least said second divide-by-two circuit (B) comprises a four phase output each separated by 90°. A phase selection unit (PSU) is provided for selecting one of the four phase outputs (Ip, I n, Qp, Qn; INi, INni, INq, Innq) of the second divide-by-2 circuit (B). Moreover, a phase control unit is provided for providing control signal (Cl, NC0; C2, NC2; C3, NC3) to the phase selection unit, wherein the phase selection unit (PSU) performs the selection of the four phase outputs(Ip, In, Qp, Qn; INi, INni, INq, Innq) according to the control signals (C0, NC0; C1, NC1; C2, NC2). Said phase selection unit (PSU) is implemented based on direct logic. The implementation of the phase selection unit based on direct logic enables a higher speed and saves area on the chip.
    • 提供了具有双模数分频器的相位切换双模预分频器。 所述分频器包括第一和第二除以2电路(A; B),其中所述第二分频电路(B)耦合到所述第一分频电路(A)的输出端,并且在 至少所述第二分频电路(B)包括每相分开90°的四相输出。 提供相位选择单元(PSU),用于选择第二分频电路(B)的四个相位输出(Ip,I n,Qp,Qn; INi,INni,INq,Innq)中的一个。 此外,相位控制单元被提供用于向相位选择单元提供控制信号(C1,NC0; C2,NC2; C3,NC3),其中相位选择单元(PSU)执行四相输出(Ip, 根据控制信号(C0,NC0; C1,NC1; C2,NC2),输入,Qp,Qn,INi,INni,INq,Innq)。 所述相位选择单元(PSU)是基于直接逻辑实现的。 基于直接逻辑的相位选择单元的实现能够实现更高的速度并节省芯片上的面积。