会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 7. 发明申请
    • TEMPERATURE COMPENSATION AND COARSE TUNE BANK SWITCHES IN A LOW PHASE NOISE VCO
    • 低相位噪声压控振荡器中的温度补偿和谐波调节银行开关
    • WO2012119123A3
    • 2013-01-10
    • PCT/US2012027603
    • 2012-03-02
    • QUALCOMM INCZHANG GANG
    • ZHANG GANG
    • H03L7/099H03L1/02H03L7/10
    • H03L7/099H03L1/02H03L7/104
    • The LC tank of a VCO includes a main varactor circuit and temperature compensation varactor circuit coupled in parallel with the main varactor circuit. The main varactor is used for fine tuning. The temperature compensation varactor circuit has a capacitance- voltage characteristic that differs from a capacitance-voltage characteristic of the main varactor circuit such that the effects of common mode noise across the two varactor circuits are minimized. The LC tank also has a plurality of switchable capacitor circuits provided for coarse tuning. To prevent breakdown of the main thin oxide switch in each of the switchable capacitor circuits, each switchable capacitor circuit has a capacitive voltage divider circuit that reduces the voltage across the main thin oxide switch when the main switch is off.
    • VCO的LC箱包括与主变容二极管并联耦合的主变容二极管电路和温度补偿变容二极管电路。 主变容器用于微调。 温度补偿变容二极管的电容电压特性与主变容二极管电路的电容 - 电压特性不同,使两个变容二极管之间的共模噪声的影响最小化。 LC箱还具有用于粗调的多个可切换电容器电路。 为了防止每个可切换电容器电路中的主薄氧化物开关的破坏,每个可切换电容器电路具有电容分压器电路,当主开关断开时,电容分压电路降低主薄氧化物开关两端的电压。