-
公开(公告)号：US07495515B1
公开(公告)日：2009-02-24
申请号：US11895427
申请日：2007-08-24
IPC分类号： H03F3/04
CPC分类号： H03F3/191 , H03F1/56 , H03F3/45192 , H03F2200/213 , H03F2200/294 , H03F2203/45386 , H03F2203/45544
摘要： Methods and corresponding systems in a low noise amplifier include selecting a selected sub-band for amplifying, wherein the selected sub-band is one of a plurality of sub-bands, wherein each sub-band is a portion of a frequency band, and wherein each sub-band has a corresponding sub-band center frequency. Next, a gate-source capacitor is adjusted so that a real part of an LNA input impedance corresponds to a real part of a source impedance at the selected sub-band center frequency. A match capacitor is also adjusted so that the LNA input impedance corresponds to the complex conjugate of the source impedance at the selected sub-band center frequency. The gate-source capacitor and the match capacitor can each be adjusted by recalling capacitor values from memory that correspond to the selected sub-band, and connecting selected capacitor components in response to the recalled capacitor values.
摘要翻译： 低噪声放大器中的方法和对应系统包括选择用于放大的所选择的子带，其中所选择的子带是多个子带中的一个，其中每个子带是频带的一部分，并且其中 每个子带具有相应的子带中心频率。 接下来，调整栅极 - 源极电容器，使得LNA输入阻抗的实部对应于所选择的子带中心频率处的源极阻抗的实部。 还调整匹配电容器，使得LNA输入阻抗对应于所选子带中心频率处的源阻抗的复共轭。 可以通过从对应于所选择的子带的存储器调用电容器值来调整栅极 - 源极电容器和匹配电容器，并且响应于调用的电容器值连接所选择的电容器部件。
-
公开(公告)号：US20090051441A1
公开(公告)日：2009-02-26
申请号：US11895427
申请日：2007-08-24
IPC分类号： H03F3/191
CPC分类号： H03F3/191 , H03F1/56 , H03F3/45192 , H03F2200/213 , H03F2200/294 , H03F2203/45386 , H03F2203/45544
摘要： Methods and corresponding systems in a low noise amplifier include selecting a selected sub-band for amplifying, wherein the selected sub-band is one of a plurality of sub-bands, wherein each sub-band is a portion of a frequency band, and wherein each sub-band has a corresponding sub-band center frequency. Next, a gate-source capacitor is adjusted so that a real part of an LNA input impedance corresponds to a real part of a source impedance at the selected sub-band center frequency. A match capacitor is also adjusted so that the LNA input impedance corresponds to the complex conjugate of the source impedance at the selected sub-band center frequency. The gate-source capacitor and the match capacitor can each be adjusted by recalling capacitor values from memory that correspond to the selected sub-band, and connecting selected capacitor components in response to the recalled capacitor values.
摘要翻译： 低噪声放大器中的方法和对应系统包括选择用于放大的所选择的子带，其中所选择的子带是多个子带中的一个，其中每个子带是频带的一部分，并且其中 每个子带具有相应的子带中心频率。 接下来，调整栅极 - 源极电容器，使得LNA输入阻抗的实部对应于所选择的子带中心频率处的源极阻抗的实部。 还调整匹配电容器，使得LNA输入阻抗对应于所选子带中心频率处的源阻抗的复共轭。 可以通过从对应于所选择的子带的存储器调用电容器值来调整栅极 - 源极电容器和匹配电容器，并且响应于调用的电容器值连接所选择的电容器部件。
-
公开(公告)号：US08004367B2
公开(公告)日：2011-08-23
申请号：US12428215
申请日：2009-04-22
IPC分类号： H03B5/12
摘要： A PLL receives an indicator indicating that it is to operate at a different operating frequency than a current operating frequency. A control word is selected from a set of linear control words based upon the different operating frequency. A capacitance of a variable capacitor of a voltage-controlled oscillator is adjusted based upon the control word. The variable capacitor is monotonic and non-linear relative to the set of linear control words.
摘要翻译： 一个PLL接收一个指示器，指示它在与当前工作频率不同的工作频率下工作。 基于不同的操作频率从一组线性控制字中选择控制字。 基于控制字调整压控振荡器的可变电容器的电容。 可变电容器相对于线性控制字的集合是单调的和非线性的。
-
公开(公告)号：US20100271137A1
公开(公告)日：2010-10-28
申请号：US12428215
申请日：2009-04-22
IPC分类号： H03L7/00
摘要： A PLL receives an indicator indicating that it is to operate at a different operating frequency than a current operating frequency. A control word is selected from a set of linear control words based upon the different operating frequency. A capacitance of a variable capacitor of a voltage-controlled oscillator is adjusted based upon the control word. The variable capacitor is monotonic and non-linear relative to the set of linear control words.
摘要翻译： 一个PLL接收一个指示器，指示它在与当前工作频率不同的工作频率下工作。 基于不同的操作频率从一组线性控制字中选择控制字。 基于控制字调整压控振荡器的可变电容器的电容。 可变电容器相对于线性控制字的集合是单调的和非线性的。
-
-
-
搜索结果
4 条记录 (耗时 0.019 秒)
