公开(公告)号：US08243579B2

公开(公告)日：2012-08-14

申请号：US11976909

申请日：2007-10-29

Applicant: Seung-Wook Lee ,  Joonbae Park ,  Jeong Woo Lee ,  Su Won Kang ,  Kyeongho Lee

Inventor： Seung-Wook Lee ,  Joonbae Park ,  Jeong Woo Lee ,  Su Won Kang ,  Kyeongho Lee

IPC: H04J11/00

CPC classification number: H04L27/2647

Abstract: Embodiments according to the application relates to an OFDM (orthogonal frequency division multiplexing) receiving circuit and methods thereof configured to have a plurality of demodulation paths for an oversampling ADC, which can increase or improve an overall performance of the circuit.

Abstract translation: 根据本申请的实施例涉及一种OFDM（正交频分复用）接收电路及其方法，被配置为具有用于过采样ADC的多个解调路径，其可以增加或提高电路的整体性能。

公开(公告)号：US07995645B2

公开(公告)日：2011-08-09

申请号：US12027762

申请日：2008-02-07

Applicant: Kyeongho Lee ,  Joonbae Park ,  Jeong Woo Lee ,  Seung-Wook Lee ,  Eal Wan Lee

Inventor： Kyeongho Lee ,  Joonbae Park ,  Jeong Woo Lee ,  Seung-Wook Lee ,  Eal Wan Lee

IPC: H04B3/46

CPC classification number: H03D7/166 ,  H03D3/009 ,  H04L25/061 ,  H04L27/364 ,  H04L27/3863 ,  H04L2027/0016

Abstract: The present general inventive concept relates to apparatuses and/or methods for measuring an in-phase and quadrature (IQ) imbalance. In one embodiment, a signal generator can provide a first IQ signal of a DC component during a first period and the first IQ signal of a first angular frequency during a second period, an IQ up-conversion mixer can up-convert the first IQ signal by a second angular frequency during the first period and up-convert the first IQ signal by a third angular frequency during the second period to output a second IQ signal, an IQ down-conversion mixer can down-convert the second IQ signal by the third angular frequency to output a third IQ signal and an IQ imbalance detector can obtain a first IQ imbalance (e.g., Rx IQ imbalance) from the third IQ signal during the first period and a second IQ imbalance (e.g., Tx/Rx IQ imbalance) during the second period.

Abstract translation: 本总体发明构思涉及用于测量同相和正交（IQ）不平衡的装置和/或方法。 在一个实施例中，信号发生器可以在第一周期期间提供DC分量的第一IQ信号，并且在第二周期期间提供第一角频率的第一IQ信号，IQ上变频混频器可以上变频第一IQ信号 在第一周期期间以第二角度频率进行第二角度频率，并且在第二周期期间将第一IQ信号上升转换第三角度频率以输出第二IQ信号，IQ降频转换混频器可以将第二IQ信号下变频第三IQ信号 输出第三IQ信号和IQ不平衡检测器的角频率可以在第一周期期间从第三IQ信号和第二IQ不平衡（例如，Tx / Rx IQ不平衡）获得第一IQ不平衡（例如，Rx IQ不平衡） 第二期。

公开(公告)号：US20080197891A1

公开(公告)日：2008-08-21

申请号：US11902358

申请日：2007-09-20

Applicant: Joonbae Park ,  Kyeongho Lee ,  Yido Koo ,  Jeong-Woo Lee

Inventor： Joonbae Park ,  Kyeongho Lee ,  Yido Koo ,  Jeong-Woo Lee

IPC: H03L7/22 ,  H03B21/01

CPC classification number: H03L7/23 ,  H03L7/183 ,  H03L7/1976

Abstract: The application discloses system and method embodiments related to a frequency synthesizer. Embodiments of a frequency synthesizer can have a low phase noise and a narrow channel spacing. Embodiments of a frequency synthesizer can use two phase locked loops. One embodiment of a frequency synthesizer can include a reference frequency oscillator for outputting a signal having a reference frequency, an integer-N phase locked loop to generate a first output frequency signal based on the reference frequency signal, a fractional-N phase locked loop to generate a second output frequency based on the reference frequency signal and a circuit to generate an output frequency signal by combining the first output frequency and the second output frequency.

Abstract translation: 本申请公开了与频率合成器相关的系统和方法实施例。 频率合成器的实施例可以具有低相位噪声和窄通道间隔。 频率合成器的实施例可以使用两个锁相环。 频率合成器的一个实施例可以包括：参考频率振荡器，用于输出具有参考频率的信号，整数N个锁相环，以基于参考频率信号产生第一输出频率信号;分数N相锁相环 基于参考频率信号产生第二输出频率，以及通过组合第一输出频率和第二输出频率来产生输出频率信号的电路。

公开(公告)号：US20070202812A1

公开(公告)日：2007-08-30

申请号：US11708705

申请日：2007-02-21

Applicant: Joonbae Park ,  Kyeongho Lee

Inventor： Joonbae Park ,  Kyeongho Lee

IPC: H04B1/38 ,  H04B1/40

CPC classification number: H04B1/525

Abstract: Embodiments of methods, transceiver circuits, and systems can compensate an IQ mismatch (e.g., Tx or Rx) or a carrier leakage using a plurality of local oscillators. One embodiment of a transceiver can include a first up-conversion IQ mixer, a second up-conversion IQ mixer, a first down-conversion IQ mixer with an input to receive an output of the second up-conversion IQ mixer, a second down-conversion IQ mixer with an input to receive an output of the first up-conversion IQ mixer, a first local oscillator to generate a first IQ LO signal for the first up-conversion IQ mixer and the first down-conversion IQ mixer, and a second local oscillator to generate a second IQ LO signal for the second up-conversion IQ mixer and the second down-conversion IQ mixer.

Abstract translation: 方法，收发器电路和系统的实施例可以使用多个本地振荡器补偿IQ失配（例如，Tx或Rx）或载波泄漏。 收发器的一个实施例可以包括第一上变频IQ混频器，第二上变频IQ混频器，具有用于接收第二上变频IQ混频器的输出的输入的第一下变频IQ混频器， 转换IQ混频器，具有用于接收第一上变频IQ混频器的输出的输入端，第一本地振荡器，用于产生用于第一上变频IQ混频器和第一下变频IQ混频器的第一IQ LO信号，以及第二本地振荡器 本地振荡器产生用于第二上变频IQ混频器和第二下变频IQ混频器的第二IQ LO信号。

公开(公告)号：US07002410B2

公开(公告)日：2006-02-21

申请号：US10229267

申请日：2002-08-28

Applicant: Hei-sam Jeong ,  Joonbae Park ,  Kyeongho Lee

Inventor： Hei-sam Jeong ,  Joonbae Park ,  Kyeongho Lee

IPC: H03F1/26

CPC classification number: H03F1/3223 ,  H03F1/3229

Abstract: The present invention is directed to a linearization apparatus and method. Preferred embodiments according to the present invention can combine an auxiliary non-linear block to a functional block of a system to increase linearity of an output signal of the system such as a communication system. System overhead due to the non-linear auxiliary block can be small because of circuit structure, cost and low consumption. Further, the non-linear auxiliary block can be designed so that no feedback path is required. Further preferred embodiments can use a feedback path without loss of stability by using a cancellation apparatus or process based on an averaging detection of the output signal. For example, a feedback loop can detect power leakage in a sideband caused by non-linearities of the communication system.

公开(公告)号：US07952442B2

公开(公告)日：2011-05-31

申请号：US11274825

申请日：2005-11-16

Applicant: Yido Koo ,  Hyungki Huh ,  Kang Yoon Lee ,  Jeong-Woo Lee ,  Joonbae Park ,  Kyeongho Lee

Inventor： Yido Koo ,  Hyungki Huh ,  Kang Yoon Lee ,  Jeong-Woo Lee ,  Joonbae Park ,  Kyeongho Lee

IPC: H03B5/12

CPC classification number: H01L23/645 ,  H01L24/48 ,  H01L24/49 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/49111 ,  H01L2924/00014 ,  H01L2924/01005 ,  H01L2924/01006 ,  H01L2924/01023 ,  H01L2924/01033 ,  H01L2924/01082 ,  H01L2924/014 ,  H01L2924/14 ,  H01L2924/19041 ,  H01L2924/19042 ,  H01L2924/19043 ,  H01L2924/30107 ,  H01L2924/00 ,  H01L2224/45099 ,  H01L2224/05599

Abstract: An integrated circuit package includes an inductance loop formed from a connection of bonding wires and one or more input/output (I/O) package pins. In one embodiment, the inductance loop is formed from a first wire which connects a bonding pad on the integrated circuit chip to an I/O pin of the package and a second wire which connects the same bonding pad to the same pin. By forming the inductor loop within the limits of the integrated circuit package, a substantial reduction in space requirements is realized, which, in turn, promotes miniaturization.

Abstract translation: 集成电路封装包括由接合线和一个或多个输入/输出（I / O）封装引脚的连接形成的电感环路。 在一个实施例中，电感环由将集成电路芯片上的焊盘连接到封装的I / O引脚的第一布线和将相同的焊盘连接到同一引脚的第二布线形成。 通过在集成电路封装的极限内形成电感器回路，实现了空间要求的显着降低，这反过来促进了小型化。

公开(公告)号：US20080252377A1

公开(公告)日：2008-10-16

申请号：US11976911

申请日：2007-10-29

Applicant: Seung-Wook Lee ,  Deok Hee Lee ,  Eunseok Song ,  Joonbae Park ,  Kyeongho Lee

Inventor： Seung-Wook Lee ,  Deok Hee Lee ,  Eunseok Song ,  Joonbae Park ,  Kyeongho Lee

IPC: H03G3/30 ,  H04B1/16

CPC classification number: H03F1/223 ,  H03F3/193 ,  H03F2200/372

Abstract: Embodiments of the present general inventive concept include a low noise amplifier and method with an improved linearity while reducing a noise disadvantage (e.g., increase). One embodiment of a low noise amplifier can include a first transistor to receive an input signal at a control terminal thereof, a second transistor having a first terminal coupled to a second terminal of the first transistor, an envelope detector to output a control signal corresponding to a characteristic of the input signal and an envelope amplifier to amplify the control signal to be applied to a control terminal of the second transistor.

Abstract translation: 本发明总体构思的实施例包括具有改善的线性度的低噪声放大器和方法，同时降低噪声不利（例如增加）。 低噪声放大器的一个实施例可以包括在其控制端接收输入信号的第一晶体管，具有耦合到第一晶体管的第二端的第一端的第二晶体管，用于输出对应于 输入信号的特性和包络放大器，放大要施加到第二晶体管的控制端的控制信号。

公开(公告)号：US20080139161A1

公开(公告)日：2008-06-12

申请号：US11819943

申请日：2007-06-29

Applicant: Joonbae Park ,  Kyeongho Lee ,  Sang Hun Jung ,  Eal Wan Lee ,  In Ho Song

Inventor： Joonbae Park ,  Kyeongho Lee ,  Sang Hun Jung ,  Eal Wan Lee ,  In Ho Song

IPC: H04B1/26

CPC classification number: H04L27/0014 ,  H04L2027/0016 ,  H04L2027/0022

Abstract: The application discloses embodiments of methods and/or systems for compensating a transmission carrier leakage of an up-conversion mixer, a tranceiving circuit or apparatus embodying the same. One embodiment of a method can include detecting an I channel DC offset DCI0 and a Q channel DC offset DCQ0 generated by a reception carrier leakage from an output of a down-conversion mixer, detecting an I channel DC offset DCI and a Q channel DC offset DCQ from the output of the down-conversion mixer while varying a compensation parameter being inputted to an up-conversion mixer that has its output coupled to an input of the down-conversion mixer to determine the compensation parameter that can reduce or minimize a transmission carrier leakage. A combination of a transmission baseband signal and the determined compensation parameter can be transmitted using the up-conversion mixer and an antenna to compensate for the transmission carrier leakage.

Abstract translation: 本申请公开了用于补偿上变频混频器，引入电路或体现其的转换电路或设备的传输载波泄漏的方法和/或系统的实施例。 方法的一个实施例可以包括从下行链路的输出检测由接收载波泄漏产生的I信道DC偏移DCI 0和Q信道DC偏移DCQ <0> 转换混频器，从下转换混频器的输出端检测I信道DC偏移DCI和Q信道DC偏移DCQ，同时改变输入到上变频混频器的补偿参数，该上变频混频器的输出耦合到下变频混频器的输入 转换混频器来确定可以减少或最小化传输载波泄漏的补偿参数。 传输基带信号和所确定的补偿参数的组合可以使用上变频混频器和天线来传输，以补偿传输载波泄漏。

公开(公告)号：US07202741B2

公开(公告)日：2007-04-10

申请号：US11066546

申请日：2005-02-28

Applicant: Joonbae Park ,  Seung-Wook Lee ,  Jeong-Woo Lee ,  Kyeongho Lee

Inventor： Joonbae Park ,  Seung-Wook Lee ,  Jeong-Woo Lee ,  Kyeongho Lee

IPC: H03F3/45

CPC classification number: H03F3/211 ,  H03F3/45475 ,  H03F3/45659 ,  H03F2203/45136 ,  H03F2203/45138 ,  H03F2203/45166 ,  H03F2203/45168 ,  H03F2203/45434 ,  H03F2203/45522 ,  H03F2203/45591

Abstract: A variable-gain amplifier circuit uses a pair of single-ended operational amplifiers to amplify complementary portions of a differential input signal. By using two single-ended amplifiers instead of a single differential amplifier, linearity is significantly improved. In addition, common mode feedback circuitry is eliminated along with harmonic distortion and other forms of noise which tend to negative affect the quality of the signal output from the circuit.

Abstract translation: 可变增益放大器电路使用一对单端运算放大器来放大差分输入信号的互补部分。 通过使用两个单端放大器而不是单个差分放大器，线性度显着提高。 此外，消除共模反馈电路以及谐波失真和其他形式的噪声，这些噪声倾向于负面影响从电路输出的信号的质量。

公开(公告)号：US20070015479A1

公开(公告)日：2007-01-18

申请号：US11272053

申请日：2005-11-14

Applicant: Joonbae Park ,  Seung Lee ,  Jeong Lee ,  Kyeongho Lee

Inventor： Joonbae Park ,  Seung Lee ,  Jeong Lee ,  Kyeongho Lee

IPC: H04B1/18

CPC classification number: H04B1/28 ,  H04B1/30

Abstract: A wireless receiver and a wireless receiving method are provided wherein a frequency of a radio frequency (RF) is down-converted into a frequency of a substantially zero intermediate frequency (IF) signal or a substantially low IF signal. The down-converted signal may be filtered by an integrated filter having a low quality factor and then up-converted again into a particular IF signal, thereby integrating an external element. For example, a receiving device may receive a RF signal in a required band. A frequency down-converting device may down-convert a frequency so that a center frequency of the RF signal becomes zero. A channel select filtering device may select a required channel from the signals whose frequency is down-converted. An IF signal converting device may up-convert a frequency of the channel selected signal into a required IF. An IF processing device may extract a baseband signal after the converted IF signal is inputted and processed. An amplifying device may amplify a signal with a gain required in a process of converting a frequency.

Abstract translation: 提供了一种无线接收机和无线接收方法，其中射频（RF）的频率被下变频成基本为零的中频（IF）信号或基本上低的IF信号的频率。 下变频信号可以由具有低质量因子的积分滤波器滤波，然后再次上变频成特定的IF信号，从而整合外部元件。 例如，接收设备可以接收所需频带中的RF信号。 降频转换装置可以降频转换频率，使得RF信号的中心频率变为零。 频道选择滤波装置可以从频率被下变频的信号中选择所需频道。 IF信号转换装置可以将频道选择信号的频率上变频成所需的IF。 IF处理装置可以在转换的IF信号被输入和处理之后提取基带信号。 放大装置可以放大具有在转换频率的过程中所需的增益的信号。