-
公开(公告)号：US07113008B2
公开(公告)日：2006-09-26
申请号：US11222011
申请日：2005-09-08
IPC分类号： H03B19/00
CPC分类号： H03D7/125
摘要： A frequency mixing apparatus is provided. In the frequency mixing apparatus, a PMOS transistor is coupled to an NMOS transistor in a cascode configuration and an LO signal is applied to the bulks of the PMOS and NMOS transistors so that an input signal applied to their gates is mixed with the LO signal. High isolation between the bulks and gates of the transistors resulting from application of the LO signal to the bulks prevents leakage of the LO signal, thereby decreasing a DC offset voltage. This renders the frequency mixing applicable to a DCR. Also, due to the cascade configuration similar to an inverter configuration, the frequency mixing apparatus can be incorporated in an FPGA of a MODEM in SDR applications. Frequency mixing based on switching of a threshold voltage decreases a noise factor and enables frequency mixing in a low supply voltage range, thereby decreasing power consumption.
摘要翻译： 提供了一种混频装置。 在频率混合装置中，PMOS晶体管以共源共栅配置耦合到NMOS晶体管，并且LO信号施加到PMOS和NMOS晶体管的体积，使得施加到其栅极的输入信号与LO信号混合。 通过将LO信号施加到体积而产生的晶体管的大块和栅极之间的高隔离防止了LO信号的泄漏，从而减小了DC偏移电压。 这使得频率混合适用于DCR。 另外，由于与逆变器配置相似的级联配置，所以可将混频装置并入SDR应用中的MODEM的FPGA中。 基于阈值电压的切换的频率混合降低了噪声因子，并且能够在低电源电压范围内进行频率混合，从而降低功耗。
-
公开(公告)号：US20060057998A1
公开(公告)日：2006-03-16
申请号：US11222011
申请日：2005-09-08
申请人： Bevin Perumana , Sudipto Chakraborty , Chang-Ho Lee , Joy Laskar , Sang-Hyun Woo
发明人： Bevin Perumana , Sudipto Chakraborty , Chang-Ho Lee , Joy Laskar , Sang-Hyun Woo
IPC分类号： H04B1/18
CPC分类号： H03D7/125
摘要： A frequency mixing apparatus is provided. In the frequency mixing apparatus, a PMOS transistor is coupled to an NMOS transistor in a cascode configuration and an LO signal is applied to the bulks of the PMOS and NMOS transistors so that an input signal applied to their gates is mixed with the LO signal. High isolation between the bulks and gates of the transistors resulting from application of the LO signal to the bulks prevents leakage of the LO signal, thereby decreasing a DC offset voltage. This renders the frequency mixing applicable to a DCR. Also, due to the cascade configuration similar to an inverter configuration, the frequency mixing apparatus can be incorporated in an FPGA of a MODEM in SDR applications. Frequency mixing based on switching of a threshold voltage decreases a noise factor and enables frequency mixing in a low supply voltage range, thereby decreasing power consumption.
-
公开(公告)号：US20070126491A1
公开(公告)日：2007-06-07
申请号：US11585465
申请日：2006-10-24
申请人： Sang-Hyun Woo , Jin-Sung Park , Chang-Ho Lee , Joy Laskar
发明人： Sang-Hyun Woo , Jin-Sung Park , Chang-Ho Lee , Joy Laskar
IPC分类号： G06F7/44
CPC分类号： H03D7/1441 , H03D7/1458 , H03D2200/0043 , H03D2200/0084
摘要： Provided is a mixer for use in a direct conversion receiver. The mixer includes Field Effect Transistors (FETs), a current source (IBias), two load resistors (RLoad), another FET, and two inductors L1 and L2. The FET M21 constitutes a current bleeding circuitry and the other components except for the two inductors L1 and L2 constitute a so-called Gilbert cell mixer.
摘要翻译： 提供一种用于直接转换接收机的混频器。 混频器包括场效应晶体管（FET），电流源（IBias），两个负载电阻（RLoad），另一个FET和两个电感器L 1和L 2。 FET M 21构成电流泄放电路，除了两个电感器L 1和L 2之外的其它部件构成所谓的吉尔伯特细胞混合器。
-
公开(公告)号：US20050245225A1
公开(公告)日：2005-11-03
申请号：US11089219
申请日：2005-03-24
申请人： Yun-Seo Park , Sang-Hyun Woo , Hwan-Seok Song , Seong-Soo Lee , Chang-Ho Lee , Joy Laskar
发明人： Yun-Seo Park , Sang-Hyun Woo , Hwan-Seok Song , Seong-Soo Lee , Chang-Ho Lee , Joy Laskar
CPC分类号： H03D7/165 , H03H7/20 , H03H7/21 , H03H2007/0192
摘要： An apparatus for generating an in-phase/quadrature-phase (I/Q) signal in a wireless transceiver is disclosed, including a local oscillator for generating a local oscillation signal, and first and second mixers for mixing the oscillation signal with a transmission/reception signal to convert the transmission/reception signal into a baseband or high-frequency signal. The apparatus includes a phase locked circuit for controlling the local oscillator, and a polyphase filter installed between the local oscillator and the mixers, for separating the oscillation signal from the local oscillator into an I signal and a Q signal depending on a control signal from the phase locked circuit, and outputting the separated I and Q signals to the first and second mixers, respectively.
摘要翻译： 公开了一种用于在无线收发机中产生同相/正交相（I / Q）信号的装置，包括用于产生本地振荡信号的本地振荡器，以及用于将振荡信号与发送/ 接收信号将发送/接收信号转换为基带或高频信号。 该装置包括用于控制本地振荡器的锁相电路和安装在本地振荡器和混频器之间的多相滤波器，用于根据来自该振荡器的控制信号将振荡信号与本地振荡器分离成I信号和Q信号 并且将分离的I和Q信号分别输出到第一和第二混频器。
-
公开(公告)号：US07454185B2
公开(公告)日：2008-11-18
申请号：US11089219
申请日：2005-03-24
申请人： Yun-Seo Park , Sang-Hyun Woo , Hwan-Seok Song , Seong-Soo Lee , Chang-Ho Lee , Joy Laskar
发明人： Yun-Seo Park , Sang-Hyun Woo , Hwan-Seok Song , Seong-Soo Lee , Chang-Ho Lee , Joy Laskar
IPC分类号： H04B1/10
CPC分类号： H03D7/165 , H03H7/20 , H03H7/21 , H03H2007/0192
摘要： An apparatus for generating an in-phase/quadrature-phase (I/Q) signal in a wireless transceiver is disclosed, including a local oscillator for generating an oscillation signal, and first and second mixers for mixing an oscillation signal with a transmission/reception signal to convert the transmission/reception signal into a baseband or high-frequency signal. The apparatus includes a phase locked circuit for controlling the local oscillator, and a polyphase filter installed between the local oscillator and the mixers, for separating the oscillation signal from the local oscillator into an I signal and a Q signal depending on a control signal from the phase locked circuit, and outputting the separated I and Q signals to the first and second mixers, respectively.
摘要翻译： 公开了一种用于在无线收发机中产生同相/正交相（I / Q）信号的装置，包括用于产生振荡信号的本地振荡器，以及用于将振荡信号与发送/接收混合的第一和第二混频器 信号将发送/接收信号转换为基带或高频信号。 该装置包括用于控制本地振荡器的锁相电路和安装在本地振荡器和混频器之间的多相滤波器，用于将振荡信号与本地振荡器分离成I信号和Q信号，这取决于来自 并且将分离的I和Q信号分别输出到第一和第二混频器。
-
公开(公告)号：US20060170523A1
公开(公告)日：2006-08-03
申请号：US11141123
申请日：2005-05-31
申请人： Rajarshi Mukhopadhy , Sebastien Nuttinck , Sang-Hyun Woo , Jong-Han Kim , Seong-Soo Lee , Chang-Ho Lee , Joy Laskar
发明人： Rajarshi Mukhopadhy , Sebastien Nuttinck , Sang-Hyun Woo , Jong-Han Kim , Seong-Soo Lee , Chang-Ho Lee , Joy Laskar
IPC分类号： H03H11/00
摘要： An active inductor capable of tuning a self-resonant frequency, an inductance, a Q factor, and a peak Q frequency by applying a tunable feedback resistor to a cascode-grounded active inductor is disclosed. The tunable active inductor includes a first transistor having a source connected to a power supply voltage and a gate connected to first bias voltage; a second transistor having a drain connected to a drain of the first transistor and a gate connected to a second bias voltage; a third transistor having a drain connected to a source of the second transistor and a source connected to a ground voltage; a fourth transistor having a drain connected to a gate of the third transistor, a source connected to the ground voltage and a gate connected to a third bias voltage; a fifth transistor having a source connected to the drain of the fourth transistor and a drain connected to the power supply voltage.
摘要翻译： 公开了一种通过将可调谐反馈电阻器施加到共源共栅接地有源电感器来调谐自谐振频率，电感，Q因子和峰值Q频率的有源电感器。 可调谐有源电感器包括具有连接到电源电压的源极和连接到第一偏置电压的栅极的第一晶体管; 第二晶体管，具有连接到所述第一晶体管的漏极的漏极和连接到第二偏置电压的栅极; 具有连接到所述第二晶体管的源极的漏极和连接到接地电压的源极的第三晶体管; 具有连接到第三晶体管的栅极的漏极的第四晶体管，连接到接地电压的源极和连接到第三偏置电压的栅极; 第五晶体管，其源极连接到第四晶体管的漏极，漏极连接到电源电压。
-
公开(公告)号：US20050225397A1
公开(公告)日：2005-10-13
申请号：US11088591
申请日：2005-03-24
申请人： Rahul Bhatia , Sang-Hyun Woo , Ji-Hoon Bang , Seong-Soo Lee , Chang-Ho Lee , Joy Laskar
发明人： Rahul Bhatia , Sang-Hyun Woo , Ji-Hoon Bang , Seong-Soo Lee , Chang-Ho Lee , Joy Laskar
CPC分类号： H03F3/191 , H03F2200/294 , H03F2200/372 , H03F2203/7209 , H04B1/18
摘要： Provided is a multiband low noise amplifier including a first transistor, an input matching circuit, and a first capacitor. The first transistor includes a collector electrically connected to a first power supply, a grounded emitter, and a base connected to the other end of a first inductor having one end as an input end of the low noise amplifier. The input matching circuit is connected between the collector and the base of the first transistor. The first capacitor connected to the collector of the first transistior. The input matching circuit includes a varactor. The input matching circuit includes a second capacitor connected to the varactor. The input matching circuit includes a first resistor connected to the varactor. In the multiband low noise amplifier, a varactor having a variable capacitance is installed at an input end, thereby easily performing band switching through bias voltage control by a small amount and minimizing noises that may be caused by a control signal.
摘要翻译： 提供了一种包括第一晶体管，输入匹配电路和第一电容器的多频带低噪声放大器。 第一晶体管包括电连接到第一电源，接地发射极和与第一电感器的另一端连接的基极的集电极，第一电感器的一端作为低噪声放大器的输入端。 输入匹配电路连接在第一晶体管的集电极和基极之间。 第一个电容连接到第一个transistior的收集器。 输入匹配电路包括变容二极管。 输入匹配电路包括连接到变容二极管的第二电容器。 输入匹配电路包括连接到变容二极管的第一电阻器。 在多频带低噪声放大器中，具有可变电容的变容二极管安装在输入端，从而通过少量的偏置电压控制容易地执行频带切换并且最小化可能由控制信号引起的噪声。
-
公开(公告)号：US07449934B2
公开(公告)日：2008-11-11
申请号：US11585465
申请日：2006-10-24
申请人： Sang-Hyun Woo , Jin-Sung Park , Chang-Ho Lee , Joy Laskar
发明人： Sang-Hyun Woo , Jin-Sung Park , Chang-Ho Lee , Joy Laskar
IPC分类号： G06F7/44
CPC分类号： H03D7/1441 , H03D7/1458 , H03D2200/0043 , H03D2200/0084
摘要： Provided is a mixer for use in a direct conversion receiver. The mixer includes Field Effect Transistors (FETs), a current source (IBias), two load resistors (RLoad), another FET, and two inductors L1 and L2. The FET M21 constitutes a current bleeding circuitry and the other components except for the two inductors L1 and L2 constitute a so-called Gilbert cell mixer.
摘要翻译： 提供一种用于直接转换接收机的混频器。 混频器包括场效应晶体管（FET），电流源（IBias），两个负载电阻（RLoad），另一个FET和两个电感器L 1和L 2。 FET M 21构成电流泄放电路，除了两个电感器L 1和L 2之外的其它部件构成所谓的吉尔伯特细胞混合器。
-
公开(公告)号：US07403075B2
公开(公告)日：2008-07-22
申请号：US11345716
申请日：2006-02-02
申请人： Rajarshi Mukhopadhyay , Sebastien Nuttinck , Yun-Seo Park , Sang-Woong Yoon , Sang-Hyun Woo , Hyun-Il Kang , Chang-Ho Lee , Joy Laskar
发明人： Rajarshi Mukhopadhyay , Sebastien Nuttinck , Yun-Seo Park , Sang-Woong Yoon , Sang-Hyun Woo , Hyun-Il Kang , Chang-Ho Lee , Joy Laskar
IPC分类号： H03B1/00
CPC分类号： H03B5/1231 , H03B5/1203 , H03B5/124 , H03B5/1256 , H03B2200/007
摘要： Disclosed is an ultra wide band signal generator. The ultra wide band signal generator generates a signal of a required frequency using a harmonic signal having a frequency range of a ultra wide band (UWB). The ultra wide band signal generator includes an active inductor for generating harmonic signals having power strengths substantially equal to each other within a non-linear operation range, the tunable active inductor capable of tuning a value thereof, an oscillator for amplifying and outputting the harmonic signals generated from the active inductor by frequency-transiting the harmonic signals into high frequency bands, and a filter for selectively outputting one of the harmonic signals output from the oscillator.
摘要翻译： 公开了一种超宽带信号发生器。 超宽带信号发生器使用具有超宽带（UWB）的频率范围的谐波信号产生所需频率的信号。 超宽带信号发生器包括有源电感器，用于产生具有在非线性运行范围内彼此基本相等的功率强度的谐波信号，该可调谐有源电感器能调谐其值，用于放大和输出谐波信号的振荡器 通过将谐波信号频率转换成高频带从有源电感器产生的滤波器以及用于选择性地输出从振荡器输出的谐波信号之一的滤波器。
-
公开(公告)号：US07253707B2
公开(公告)日：2007-08-07
申请号：US11141123
申请日：2005-05-31
申请人： Rajarshi Mukhopadhy , Sebastien Nuttinck , Sang-Hyun Woo , Jong-Han Kim , Seong-Soo Lee , Chang-Ho Lee , Joy Laskar
发明人： Rajarshi Mukhopadhy , Sebastien Nuttinck , Sang-Hyun Woo , Jong-Han Kim , Seong-Soo Lee , Chang-Ho Lee , Joy Laskar
摘要： An active inductor capable of tuning a self-resonant frequency, an inductance, a Q factor, and a peak Q frequency by applying a tunable feedback resistor to a cascode-grounded active inductor is disclosed. The tunable active inductor includes a first transistor having a source connected to a power supply voltage and a gate connected to first bias voltage; a second transistor having a drain connected to a drain of the first transistor and a gate connected to a second bias voltage; a third transistor having a drain connected to a source of the second transistor and a source connected to a ground voltage; a fourth transistor having a drain connected to a gate of the third transistor, a source connected to the ground voltage and a gate connected to a third bias voltage; a fifth transistor having a source connected to the drain of the fourth transistor and a drain connected to the power supply voltage.
摘要翻译： 公开了一种通过将可调谐反馈电阻器施加到共源共栅接地有源电感器来调谐自谐振频率，电感，Q因子和峰值Q频率的有源电感器。 可调谐有源电感器包括具有连接到电源电压的源极和连接到第一偏置电压的栅极的第一晶体管; 第二晶体管，具有连接到所述第一晶体管的漏极的漏极和连接到第二偏置电压的栅极; 具有连接到所述第二晶体管的源极的漏极和连接到接地电压的源极的第三晶体管; 具有连接到第三晶体管的栅极的漏极的第四晶体管，连接到接地电压的源极和连接到第三偏置电压的栅极; 第五晶体管，其源极连接到第四晶体管的漏极，漏极连接到电源电压。
-
-
-
-
-
-
-
-
-
搜索结果
279 条记录 (耗时 0.028 秒)
