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    Circuit having a multi-band oscillator and compensating oscillation frequency
    2.
    发明申请
    Circuit having a multi-band oscillator and compensating oscillation frequency 有权
    具有多频带振荡器和补偿振荡频率的电路

    公开(公告)号：US20060258313A1

    公开(公告)日：2006-11-16

    申请号：US11491978

    申请日：2006-07-25

    申请人： Toshiya Uozumi ,  Satoshi Tanaka ,  Masumi Kasahara ,  Hirotaka Oosawa ,  Yasuyuki Kimura ,  Robert Henshaw

    发明人： Toshiya Uozumi ,  Satoshi Tanaka ,  Masumi Kasahara ,  Hirotaka Oosawa ,  Yasuyuki Kimura ,  Robert Henshaw

    IPC分类号： H04B1/06 ,  H04B7/00

    CPC分类号： H03L1/02 ,  H03L7/087 ,  H03L7/099 ,  H03L7/183 ,  H03L7/187

    摘要： A semiconductor integrated circuit device for communication is provided with a PLL circuit or the like formed therein, the PLL circuit which is capable of realizing the compensation of fluctuation due to temperature change, the inhibition of increase in the chip area and the ensurement of the performance margin, and which controls a VCO having multiple oscillation frequency bands. In the case where automatic calibration is performed by switching a switch to a side of a DC voltage source in the PLL circuit using a VCO having multiple oscillation bands, a tuning voltage (Vtune) of an RFVCO is fixed to a voltage value of a DC voltage source. However, since a temperature characteristic of canceling a VCO oscillation frequency is given to the DC voltage source, it is possible to minimize the influence on the band selection when a calibration table comes to no optimum one.

    摘要翻译： 用于通信的半导体集成电路器件设置有形成在其中的PLL电路等，PLL电路能够实现由于温度变化引起的波动的补偿，芯片面积的增加的抑制以及性能的确定 边缘，并且其控制具有多个振荡频带的VCO。 在通过使用具有多个振荡频带的VCO将开关切换到PLL电路中的直流电压源的一侧进行自动校准的情况下，将RFVCO的调谐电压（Vtune）固定为DC的电压值 电压源。 然而，由于将VCO振荡频率的温度特性赋予DC电压源，所以当校准表达到最佳时，可以最小化对频带选择的影响。

    PLL circuit having a multi-band oscillator and compensating oscillation frequency
    5.
    发明授权
    PLL circuit having a multi-band oscillator and compensating oscillation frequency 有权
    PLL电路具有多频带振荡器和补偿振荡频率

    公开(公告)号：US07263340B2

    公开(公告)日：2007-08-28

    申请号：US11491978

    申请日：2006-07-25

    申请人： Toshiya Uozumi ,  Satoshi Tanaka ,  Masumi Kasahara ,  Hirotaka Oosawa ,  Yasuyuki Kimura ,  Robert Astle Henshaw

    发明人： Toshiya Uozumi ,  Satoshi Tanaka ,  Masumi Kasahara ,  Hirotaka Oosawa ,  Yasuyuki Kimura ,  Robert Astle Henshaw

    IPC分类号： H04B1/06

    CPC分类号： H03L1/02 ,  H03L7/087 ,  H03L7/099 ,  H03L7/183 ,  H03L7/187

    摘要： A semiconductor integrated circuit device for communication is provided with a PLL circuit or the like formed therein, the PLL circuit which is capable of realizing the compensation of fluctuation due to temperature change, the inhibition of increase in the chip area and the ensurement of the performance margin, and which controls a VCO having multiple oscillation frequency bands. In the case where automatic calibration is performed by switching a switch to a side of a DC voltage source in the PLL circuit using a VCO having multiple oscillation bands, a tuning voltage (Vtune) of an RFVCO is fixed to a voltage value of a DC voltage source. However, since a temperature characteristic of canceling a VCO oscillation frequency is given to the DC voltage source, it is possible to minimize the influence on the band selection when a calibration table comes to no optimum one.

    摘要翻译： 用于通信的半导体集成电路器件设置有形成在其中的PLL电路等，PLL电路能够实现由于温度变化引起的波动的补偿，芯片面积的增加的抑制以及性能的确定 边缘，并且其控制具有多个振荡频带的VCO。 在通过使用具有多个振荡频带的VCO将开关切换到PLL电路中的直流电压源的一侧进行自动校准的情况下，将RFVCO的调谐电压（Vtune）固定为DC的电压值 电压源。 然而，由于将VCO振荡频率的温度特性赋予DC电压源，所以当校准表达到最佳时，可以最小化对频带选择的影响。

    Communication semiconductor integrated circuit device and wireless communication system
    10.
    发明申请
    Communication semiconductor integrated circuit device and wireless communication system 失效

    公开(公告)号：US20070010225A1

    公开(公告)日：2007-01-11

    申请号：US11519061

    申请日：2006-09-12

    申请人： Hirotaka Oosawa ,  Masumi Kasahara ,  Noriyuki Kurakami ,  Toshiya Uozumi

    发明人： Hirotaka Oosawa ,  Masumi Kasahara ,  Noriyuki Kurakami ,  Toshiya Uozumi

    IPC分类号： H04B1/40 ,  H04B1/06

    CPC分类号： H03L7/10 ,  H03L7/0891 ,  H03L7/193

    摘要： The invention provides a communication semiconductor integrated circuit device (RF IC) capable of pulling in the frequency of a PLL circuit to a desired set frequency at high speed even in the case where a frequency settable range of the PLL circuit is wide without providing a current source other than a current source for charging and discharging in an normal operation. An oscillator as a component of a PLL circuit is constructed so as to be operative in a plurality of bands. In a state where a control voltage of the oscillator is fixed to a predetermined value, an oscillation frequency of the oscillator is measured in each of bands and stored in a storing circuit. A set value for designating a band supplied at the time of PLL operation is compared with the stored measured frequency value. From a result of comparison, a band to be actually used in the oscillator is determined, and a frequency difference between the maximum frequency of the selected band and the set frequency is obtained. Further, a control voltage closest to the set frequency is determined on the basis of the frequency difference and the frequency variable range of the selected band and the control voltage is applied to the oscillator to start oscillating operation. After that, a PLL loop is closed and locked.