公开(公告)号：US20060208818A1

公开(公告)日：2006-09-21

申请号：US11362804

申请日：2006-02-28

申请人： Jae-sup Lee ,  Kwy-ro Lee ,  Sung-sik Song

发明人： Jae-sup Lee ,  Kwy-ro Lee ,  Sung-sik Song

IPC分类号： H03B5/08

CPC分类号： H03B19/12 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/124 ,  H03B5/1265

摘要： A variable degeneration impedance supply circuit, including: two alternatively connected transistors; a capacitor circuit having a predetermined capacitance and serially connecting output terminals of the two transistors; and a switch for controlling on/off state between the capacitor circuit and the output terminal, according to a predetermined first control signal. The circuit further includes: at least one sub capacitor circuit arrayed in parallel to the capacitor circuit for serially connecting the output terminals of the two transistors; and at least one sub switch for controlling on/off state between the sub capacitor circuit and the output terminal, according to a predetermined control signal. Therefore, the magnitude of a degeneration impedance can be varied by controlling degeneration capacitance. Moreover, the variable degeneration impedance supply circuit can be advantageously applied to a voltage controlled oscillation circuit and a frequency divider circuit.

摘要翻译： 一种可变退化阻抗电源电路，包括：两个交替连接的晶体管; 具有预定电容并串联连接两个晶体管的输出端的电容器电路; 以及用于根据预定的第一控制信号控制电容器电路和输出端之间的开/关状态的开关。 该电路还包括：与电容器电路并联排列的至少一个子电容器电路，用于串联连接两个晶体管的输出端; 以及至少一个子开关，用于根据预定的控制信号控制子电容器电路和输出端子之间的接通/断开状态。 因此，可以通过控制退化电容来改变退化阻抗的大小。 此外，可变退化阻抗提供电路可以有利地应用于压控振荡电路和分频器电路。

公开(公告)号：US07456697B2

公开(公告)日：2008-11-25

申请号：US11362804

申请日：2006-02-28

申请人： Jae-sup Lee ,  Kwy-ro Lee ,  Sung-sik Song

发明人： Jae-sup Lee ,  Kwy-ro Lee ,  Sung-sik Song

IPC分类号： H03B5/08

CPC分类号： H03B19/12 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/124 ,  H03B5/1265

摘要： A variable degeneration impedance supply circuit, including: two alternatively connected transistors; a capacitor circuit having a predetermined capacitance and serially connecting output terminals of the two transistors; and a switch for controlling on/off state between the capacitor circuit and the output terminal, according to a predetermined first control signal. The circuit further includes: at least one sub capacitor circuit arrayed in parallel to the capacitor circuit for serially connecting the output terminals of the two transistors; and at least one sub switch for controlling on/off state between the sub capacitor circuit and the output terminal, according to a predetermined control signal. Therefore, the magnitude of a degeneration impedance can be varied by controlling degeneration capacitance. Moreover, the variable degeneration impedance supply circuit can be advantageously applied to a voltage controlled oscillation circuit and a frequency divider circuit.

摘要翻译： 一种可变退化阻抗电源电路，包括：两个交替连接的晶体管; 具有预定电容并串联连接两个晶体管的输出端的电容器电路; 以及用于根据预定的第一控制信号控制电容器电路和输出端之间的开/关状态的开关。 该电路还包括：与电容器电路并联排列的至少一个子电容器电路，用于串联连接两个晶体管的输出端; 以及至少一个子开关，用于根据预定的控制信号控制子电容器电路和输出端子之间的接通/断开状态。 因此，可以通过控制退化电容来改变退化阻抗的大小。 此外，可变退化阻抗提供电路可以有利地应用于压控振荡电路和分频器电路。

公开(公告)号：US07274317B2

公开(公告)日：2007-09-25

申请号：US11432341

申请日：2006-05-12

申请人： Yun-seong Eo ,  Il-ku Nam ,  Sung-jae Jung ,  Kwy-ro Lee ,  Heung-bae Lee ,  Kyu-don Choi ,  Joon-hee Lee

发明人： Yun-seong Eo ,  Il-ku Nam ,  Sung-jae Jung ,  Kwy-ro Lee ,  Heung-bae Lee ,  Kyu-don Choi ,  Joon-hee Lee

IPC分类号： H03M1/00

CPC分类号： H04B1/30 ,  H04B2001/0491

摘要： A transmitter having a vertical BJT, capable of reducing power consumption, carrier leakage of a local oscillator and an error vector magnitude (EVM), is disclosed. In the transmitter, vertical BJTs implemented by a standard triplex well CMOS process are used in a frequency up-mixer and a baseband analog circuit including a DAC, an LPF, a VGA and a PGA, thereby improving the overall performance of the transmitter.

摘要翻译： 公开了具有垂直BJT的能够降低功耗，本地振荡器的载波泄漏和误差矢量幅度（EVM）的发射机。 在发射机中，通过标准三重阱CMOS工艺实现的垂直BJT用于上升混频器和包括DAC，LPF，VGA和PGA的基带模拟电路，从而提高发射机的整体性能。

公开(公告)号：US20060188041A1

公开(公告)日：2006-08-24

申请号：US11357127

申请日：2006-02-21

申请人： Woo-jong Park ,  Min-seop Jeong ,  Sung-chung Park ,  Kwy-ro Lee

发明人： Woo-jong Park ,  Min-seop Jeong ,  Sung-chung Park ,  Kwy-ro Lee

IPC分类号： H04L27/06

CPC分类号： H04L25/067 ,  H04L25/03318

摘要： A receiver having a low computation complexity so as to estimate a transmitted includes a likelihood function calculator calculating likelihoods of transmittable signals using a currently received signal, at least one previously received signal, and an estimated signal corresponding to the at least one previously received signal; and a maximum value output unit outputting a transmittable signal corresponding to a likelihood function of the likelihood functions having a maximum value. Thus, a currently received signal can be estimated using a previously received signal, a previously estimated signal, and the currently received signal. As a result, the reliability of the estimated signal can be improved. Also, the previously estimated signal can be stored to prevent the complexity of a computation from being increased.

摘要翻译： 具有低计算复杂度以便估计传输的接收机包括似然函数计算器，其使用当前接收的信号，至少一个先前接收到的信号和对应于该至少一个先前接收到的信号的估计信号来计算可发送信号的可能性; 以及最大值输出单元，输出与具有最大值的似然函数的似然函数相对应的可发送信号。 因此，可以使用先前接收的信号，先前估计的信号和当前接收的信号来估计当前接收的信号。 结果，可以提高估计信号的可靠性。 此外，可以存储先前估计的信号以防止计算的复杂性增加。