公开(公告)号：US20070290748A1

公开(公告)日：2007-12-20

申请号：US11754119

申请日：2007-05-25

Applicant: Wangmyong Woo ,  Chang-Ho Lee ,  Jaejoon Chang ,  Haksun Kim

Inventor： Wangmyong Woo ,  Chang-Ho Lee ,  Jaejoon Chang ,  Haksun Kim

IPC: H03F1/26

CPC classification number: H03F3/24 ,  H03C5/00 ,  H03F1/0205 ,  H03F1/0222 ,  H03F1/0233 ,  H03F1/3241 ,  H03F1/3247 ,  H03F1/3282 ,  H03F2200/102 ,  H03F2200/324 ,  H03F2200/451 ,  H03F2200/504 ,  H03F2200/78 ,  H03F2200/99 ,  H03F2201/3233 ,  H04L27/361 ,  H04L27/368

Abstract: Systems, methods, and apparatuses are provided for linear envelope elimination and restoration transmitters that are based on the polar modulation operating in conjunction with the orthogonal recursive predistortion technique. The polar modulation technique enhances the battery life by dynamically adjusting the bias level. Further, the analog orthogonal recursive predistortion efficiently corrects amplitude and phase errors in radio frequency (RF) power amplifiers (PA) and enhances the PA output capability. Additionally, even-order distortion components are used to predistort the input signal in a multiplicative manner so that the effective correction bandwidth is greatly enhanced. Also, the predistortion scheme, which uses instantaneously feed-backed envelope distortion signals, allows for correction of any distortion that may occur within the correction loop bandwidth, including envelope memory effects.

Abstract translation: 提供了基于与正交递归预失真技术相结合的极坐标调制的线性包络消除和恢复发射机的系统，方法和装置。 极性调制技术通过动态调整偏置电平来提高电池寿命。 此外，模拟正交递归预失真有效地校正射频（RF）功率放大器（PA）中的幅度和相位误差，并增强了PA输出能力。 另外，偶数阶失真分量被用来以乘法方式对输入信号进行预失真，从而大大增强了有效的校正带宽。 此外，使用瞬时反馈包络失真信号的预失真方案允许校正可能发生在校正环路带宽内的任何失真，包括包络记忆效应。

公开(公告)号：US07253688B2

公开(公告)日：2007-08-07

申请号：US11088591

申请日：2005-03-24

Applicant: Rahul Bhatia ,  Sang-Hyun Woo ,  Ji-Hoon Bang ,  Seong-Soo Lee ,  Chang-Ho Lee ,  Joy Laskar

Inventor： Rahul Bhatia ,  Sang-Hyun Woo ,  Ji-Hoon Bang ,  Seong-Soo Lee ,  Chang-Ho Lee ,  Joy Laskar

IPC: H03F3/191 ,  H03F1/22

CPC classification number: H03F3/191 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/7209 ,  H04B1/18

Abstract: 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.

Abstract translation: 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：US07245027B2

公开(公告)日：2007-07-17

申请号：US10823858

申请日：2004-04-14

Applicant: Chang-Ho Lee ,  Jong-Hyun Choi

Inventor： Chang-Ho Lee ,  Jong-Hyun Choi

IPC: H01L23/48

CPC classification number: H01L23/5286 ,  H01L24/06 ,  H01L2224/02166 ,  H01L2224/05554 ,  H01L2924/01024 ,  H01L2924/01033 ,  H01L2924/01039 ,  H01L2924/01046 ,  H01L2924/01068 ,  H01L2924/01074 ,  H01L2924/14

Abstract: A device and method for layout and fabrication of power supply bus lines in an integrated circuit such as a memory circuit are described. In accordance with the present invention, power bus lines and bonding pads of the circuit are not necessarily formed in both edge regions and center regions of the device. The bonding pads are formed in the region according to the package being used, and the power bus lines are formed in the other region. This is accomplished by forming the bonding pads over landing pads. Landing pads are formed in both the center region and the edge region under the top surface of the device. If the device is to be packaged in an edge pad configuration, the bonding pads are formed over the landing pads in the edge region, and power supply bus lines can be formed over the landing pads in the center region. Similarly, if the device is to be packaged in a center pad configuration, the bonding pads are formed over the landing pads in the center region, and the power supply bus lines can be formed over the landing pads in the edge region. The bonding pads are connected to the landing pads by conductive vias. Because the power bus lines are not formed in the same region as bonding pads, they can occupy a relatively large portion of the region in which they are formed. That is, they can be made much larger than they would be using the conventional approach in which both bonding pads and power bus lines are formed in the same region. As a result, the power noise drawbacks of the conventional approach are eliminated.

公开(公告)号：US20070092045A1

公开(公告)日：2007-04-26

申请号：US11458280

申请日：2006-07-18

Applicant: Wangmyong Woo ,  Chang-Ho Lee ,  Jungsuk Lee ,  Haksun Kim

Inventor： Wangmyong Woo ,  Chang-Ho Lee ,  Jungsuk Lee ,  Haksun Kim

IPC: H04L27/06

CPC classification number: H04L27/0012 ,  H04B1/406

Abstract: Systems, methods, and apparatuses are provided for fine-sensing modules that are operative for identifying one or more signal types from an input radio frequency (RF) signal. The fine-sensing modules may include a multiplier that combines an RF input signal and a delayed RF input signal to produce a correlation signal and an integrator that receives the correlation signal from the multiplier, where the integrator determines correlation values from integrating the correlation signal. The fine-sensing module also includes a comparator in communication with the integrator that compares the correlation values to one or more thresholds to generate information indicative of at least one signal feature of the RF input signal.

Abstract translation: 提供了用于从输入射频（RF）信号识别一个或多个信号类型的精细感测模块的系统，方法和装置。 精细感测模块可以包括组合RF输入信号和延迟的RF输入信号以产生相关信号的乘法器，以及从乘法器接收相关信号的积分器，其中积分器从积分相关信号确定相关值。 精细感测模块还包括与积分器通信的比较器，其将相关值与一个或多个阈值进行比较，以产生指示RF输入信号的至少一个信号特征的信息。

公开(公告)号：US20070091998A1

公开(公告)日：2007-04-26

申请号：US11458249

申请日：2006-07-18

Applicant: Wangmyong Woo ,  Chang-Ho Lee ,  Jungsuk Lee ,  Haksun Kim

Inventor： Wangmyong Woo ,  Chang-Ho Lee ,  Jungsuk Lee ,  Haksun Kim

IPC: H04B7/216 ,  H04N7/12 ,  H04Q7/20

CPC classification number: H04B1/406 ,  H04W16/14

Abstract: Systems, methods, and apparatuses are provided for spectrum-sensing cognitive radios that are operative to detect and utilize available RF spectrum resources. The spectrum-sensing cognitive radios include at least one antenna and a frequency-agile radio front-end module in communication with the at least one antenna and configured to transmit and receive radio frequency signals via the at least one antenna. In addition, a spectrum-sensing module, which may include one or both of coarse-sensing and fine-sensing modules, may be in communication with the at least one antenna and be configured to generate RF spectrum usage information. A medium access control (MAC) module is operative to receive the RF spectrum usage information from the spectrum-sensing module. Based upon the received RF spectrum usage information, the MAC module is operative to direct a frequency of operation of the radio front-end module based at least in part on the received spectrum usage information.

Abstract translation: 提供了用于检测和利用可用RF频谱资源的频谱感知认知无线电的系统，方法和装置。 频谱感知认知无线电包括与所述至少一个天线通信的至少一个天线和频率敏捷无线电前端模块，并被配置为经由所述至少一个天线发射和接收射频信号。 此外，可以包括粗略感测和精细感测模块中的一个或两个的频谱感测模块可以与至少一个天线通信，并且被配置为生成RF频谱使用信息。 媒体访问控制（MAC）模块用于从频谱感测模块接收RF频谱使用信息。 基于所接收的RF频谱使用信息，MAC模块至少部分地基于所接收的频谱使用信息来操作以指导无线电前端模块的操作频率。

公开(公告)号：US20060194556A1

公开(公告)日：2006-08-31

申请号：US11345738

申请日：2006-02-02

Applicant: Yun-Seo Park ,  Sang-Hyun Woo ,  Jong-Ae Park ,  Seong-Soo Lee ,  Chang-Ho Lee ,  Joy Laskar

Inventor： Yun-Seo Park ,  Sang-Hyun Woo ,  Jong-Ae Park ,  Seong-Soo Lee ,  Chang-Ho Lee ,  Joy Laskar

IPC: H04B1/06 ,  H04B1/26

CPC classification number: H04B1/30

Abstract: Disclosed is a local oscillation circuit for a direct conversion receiver, which includes a local oscillator for outputting a local oscillation signal of a predetermined frequency; and a fractional signal generator for converting the local oscillation signal into a fractional harmonic signal, which has a frequency equal to a frequency of a received signal, and outputting the converted signal to a down converter. The fractional signal generator includes a divider for dividing a frequency of an output signal of the fractional signal generator by a predetermined integer; and a mixer for mixing the local oscillation signal and an output signal of the divider.

Abstract translation: 公开了一种用于直接转换接收机的本地振荡电路，其包括用于输出预定频率的本地振荡信号的本地振荡器; 以及分数信号发生器，用于将本地振荡信号转换成具有等于接收信号的频率的频率的分数谐波信号，并将转换的信号输出到下变频器。 分数信号发生器包括用于将分数信号发生器的输出信号的频率除以预定整数的分频器; 以及用于混合本地振荡信号和分频器的输出信号的混频器。

公开(公告)号：US20060165243A1

公开(公告)日：2006-07-27

申请号：US11336668

申请日：2006-01-20

Applicant: Chang-Ho Lee

Inventor： Chang-Ho Lee

IPC: H04R1/10 ,  H04R25/00

CPC classification number: H04R1/1091 ,  H04M1/05 ,  H04M1/6066 ,  H04M2250/02

Abstract: Disclosed is a wireless headset apparatus and an operation method thereof. A separate earphone is connected to a wireless headset so that the user can listen to a voice through both the earphone and a built-in speaker included in the wireless headset. When the connected earphone includes a microphone, the function of a built-in microphone included in the wireless headset is interrupted, and a voice is received through the microphone included in the connected earphone, so that the user can smoothly communicate even when the user moves to a noisy area where the communication environment is poor.

Abstract translation: 公开了一种无线耳机装置及其操作方法。 单独的耳机连接到无线耳机，使得用户可以通过耳机和包括在无线耳机中的内置扬声器来收听语音。 当连接的耳机包括麦克风时，包括在无线耳机中的内置麦克风的功能被中断，并且通过连接的耳机中包括的麦克风接收到语音，使得即使当用户移动时，用户也可以平稳地通信 到通信环境差的嘈杂区域。

公开(公告)号：US20060134463A1

公开(公告)日：2006-06-22

申请号：US11302447

申请日：2005-12-14

Applicant: Seok-Hwan Hwang ,  Young-Kook Kim ,  Chang-Ho Lee ,  Seok-Jong Lee ,  Seung-Gak Yang ,  Hee-Yeon Kim

Inventor： Seok-Hwan Hwang ,  Young-Kook Kim ,  Chang-Ho Lee ,  Seok-Jong Lee ,  Seung-Gak Yang ,  Hee-Yeon Kim

IPC: H01L51/54 ,  H05B33/14 ,  C07C211/00 ,  C07C209/06

CPC classification number: H01L51/0059 ,  C07C211/54 ,  C07C217/92 ,  C07C255/58 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1014 ,  H01L51/0052 ,  H01L51/006 ,  H01L51/0081 ,  H01L51/5012 ,  H01L2251/308 ,  H05B33/14

Abstract: A triarylamine-based compound represented by Formula (1), and an organic electroluminescent device using an organic layer including the triarylamine-based compound are provided: where each of Ar1 to Ar8 is independently a substituted or unsubstituted C6-C30 aryl group or a substituted or unsubstituted C2-C30 heteroaryl group. The triarylamine-based compound has superior electric properties and charge transport abilities, and thus is useful as a hole injection material and a hole transport material which are suitable for fluorescent and phosphorescent devices of all colors, including red, green, blue, and white colors. The organic electroluminescent device manufactured using the triarylamine-based compound has high efficiency, low voltage, high luminance, and a long lifespan.

Abstract translation: 提供由式（1）表示的基于三芳胺的化合物和使用包含三芳基胺类化合物的有机层的有机电致发光器件：其中Ar 1至Ar 8中的每一个， 取代或未取代的C 6 -C 30芳基或取代或未取代的C 2 -C 30杂芳基。 三芳胺类化合物具有优异的电性能和电荷输送能力，因此可用作适用于所有颜色的荧光和磷光装置的空穴注入材料和空穴传输材料，包括红，绿，蓝和白色 。 使用三芳基胺类化合物制造的有机电致发光元件具有效率高，电压低，亮度高，使用寿命长的优点。

公开(公告)号：US20060108948A1

公开(公告)日：2006-05-25

申请号：US11169783

申请日：2005-06-30

Applicant: Hyun-Il Shin ,  Jae Lee ,  Chang-Ho Lee

Inventor： Hyun-Il Shin ,  Jae Lee ,  Chang-Ho Lee

IPC: H05B41/36 ,  H05B37/02

CPC classification number: H05B41/2855 ,  H05B37/03

Abstract: A circuit for sensing an open-circuit lamp is provided. The circuit includes a reference voltage output unit, a voltage sensor, and a comparator. The reference voltage output unit provides a reference voltage. The voltage sensor detects a sensed voltage corresponding to a status of a lamp. The status of the lamp includes an open-circuit status and a closed-circuit status. The comparator compares the sensed voltage with the reference voltage and outputs a result indicating the status of the lamp.

Abstract translation: 提供了用于感测开路灯的电路。 电路包括参考电压输出单元，电压传感器和比较器。 参考电压输出单元提供参考电压。 电压传感器检测对应于灯状态的感测电压。 该灯的状态包括开路状态和闭路状态。 比较器将检测到的电压与参考电压进行比较，并输出指示灯状态的结果。

公开(公告)号：US07026240B2

公开(公告)日：2006-04-11

申请号：US10776064

申请日：2004-02-11

Applicant: Jae-Hyun Kim ,  Dong-Won Shin ,  Boo-Deuk Kim ,  Chang-Ho Lee ,  Won-Mi Kim ,  Seok-Bong Park

Inventor： Jae-Hyun Kim ,  Dong-Won Shin ,  Boo-Deuk Kim ,  Chang-Ho Lee ,  Won-Mi Kim ,  Seok-Bong Park

IPC: H01L21/4763

CPC classification number: H01L23/3192 ,  H01L21/02118 ,  H01L21/0271 ,  H01L21/0274 ,  H01L21/312 ,  H01L2924/0002 ,  H01L2924/19041 ,  H01L2924/00

Abstract: In a semiconductor device fabrication method and in a product formed according to the method, a photosensitive polyimide layer (PSPL) layer is applied to a semiconductor device in a manner which overcomes the limitations of the conventional approaches. The beneficial qualities of an added photoresist layer are utilized to avoid unwanted development of the underlying PSPL layer. In this manner, cracking of the PSPL layer is mitigated or eliminated, reducing the device soft error rate (SER) and increasing device yield. This is accomplished in a reliable and low-cost approach that employs standard device fabrication techniques.

Abstract translation: 在半导体器件制造方法和根据该方法形成的产品中，以克服常规方法的限制的方式将光敏聚酰亚胺层（PSPL）层施加到半导体器件。 利用添加的光致抗蚀剂层的有益特性来避免潜在的PSPL层的不期望的显影。 以这种方式，减轻或消除了PSPL层的破裂，降低了器件的软错误率（SER）并提高了器件的产量。 这是采用标准器件制造技术的可靠且低成本的方法实现的。