专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08102209B2 CMOS variable gain amplifier 有权
标题翻译： CMOS可变增益放大器
公开(公告)号：US08102209B2
公开(公告)日：2012-01-24
申请号：US12878307
申请日：2010-09-09
申请人： Seunghyun Jang , Kwang-Chun Lee
发明人： Seunghyun Jang , Kwang-Chun Lee
IPC分类号： H03F3/45
CPC分类号： H03G1/0029 , H03F3/45188 , H03F3/4565 , H03F2203/45074 , H03F2203/45082 , H03F2203/45302 , H03F2203/45414 , H03G7/001
摘要： A complementary metal-oxide semiconductor (CMOS) variable gain amplifier includes: a cascode amplifier including a common source field effect transistor and a common gate field effect transistor in a cascode structure; a first current generation unit connected in parallel to a drain of the common gate field effect transistor and configured to vary transconductance of the cascode amplifier; a second current generation unit connected to a common source of the cascode amplifier and configured to control a bias current of the cascode amplifier; a current control unit configured to generate a current control signal for the first and second current generation units; and a load stage connected in series to a drain of the cascode amplifier and configured to output an output current, which is varied by the overall transconductance of the cascode amplifier, as a differential output voltage.
摘要翻译：互补金属氧化物半导体（CMOS）可变增益放大器包括：共源共栅放大器，包括共源极场效应晶体管和共栅型场效应晶体管; 与公共栅极场效应晶体管的漏极并联连接并被配置为改变共源共栅放大器的跨导的第一电流产生单元; 连接到所述共射共基放大器的共同源并被配置为控制所述共源共栅放大器的偏置电流的第二电流产生单元; 电流控制单元，被配置为产生用于所述第一和第二电流产生单元的电流控制信号; 以及与串联放大器的漏极串联连接的负载级，其被配置为输出由串联放大器的整个跨导变化的输出电流作为差分输出电压。

2. 发明申请

US20110063030A1 CMOS VARIABLE GAIN AMPLIFIER 有权
标题翻译： CMOS可变增益放大器
公开(公告)号：US20110063030A1
公开(公告)日：2011-03-17
申请号：US12878307
申请日：2010-09-09
申请人： Seunghyun JANG , Kwang-Chun Lee
发明人： Seunghyun JANG , Kwang-Chun Lee
IPC分类号： H03G3/30 , H03F3/45 , H03F1/22
CPC分类号： H03G1/0029 , H03F3/45188 , H03F3/4565 , H03F2203/45074 , H03F2203/45082 , H03F2203/45302 , H03F2203/45414 , H03G7/001
摘要： A complementary metal-oxide semiconductor (CMOS) variable gain amplifier includes: a cascode amplifier including a common source field effect transistor and a common gate field effect transistor in a cascode structure; a first current generation unit connected in parallel to a drain of the common gate field effect transistor and configured to vary transconductance of the cascode amplifier; a second current generation unit connected to a common source of the cascode amplifier and configured to control a bias current of the cascode amplifier; a current control unit configured to generate a current control signal for the first and second current generation units; and a load stage connected in series to a drain of the cascode amplifier and configured to output an output current, which is varied by the overall transconductance of the cascode amplifier, as a differential output voltage.
摘要翻译：互补金属氧化物半导体（CMOS）可变增益放大器包括：共源共栅放大器，包括共源极场效应晶体管和共栅型场效应晶体管; 与公共栅极场效应晶体管的漏极并联连接并被配置为改变共源共栅放大器的跨导的第一电流产生单元; 连接到所述共射共基放大器的共同源并被配置为控制所述共源共栅放大器的偏置电流的第二电流产生单元; 电流控制单元，被配置为产生用于所述第一和第二电流产生单元的电流控制信号; 以及与串联放大器的漏极串联连接的负载级，其被配置为输出由串联放大器的整个跨导变化的输出电流作为差分输出电压。

3. 发明授权

US08233845B2 Method for measuring variable bandwidth wireless channel and transmitter and receiver therefor 有权
标题翻译：用于测量可变带宽无线信道及其发射机和接收机的方法
公开(公告)号：US08233845B2
公开(公告)日：2012-07-31
申请号：US13344029
申请日：2012-01-05
申请人： Sung-Jun Lee , Heon-Kook Kwon , Myung-Don Kim , Hyun-Kyu Chung , Kwang-Chun Lee
发明人： Sung-Jun Lee , Heon-Kook Kwon , Myung-Don Kim , Hyun-Kyu Chung , Kwang-Chun Lee
IPC分类号： H04B17/00
CPC分类号： H04L1/20
摘要： Provided are a method for measuring a variable bandwidth wireless channel, and a transmitter and a receiver therefor. The transmitter, includes: a pre-processing unit for performing variable over-sampling and band-limited filtering on an original sequence for measuring the wireless channel according to a pre-determined digital-to-analog (D/A) operation speed and measurement bandwidth, and creating and storing a probing sequence whose frequency is up-converted into a fixed transmitting intermediate frequency; and a real-time processing unit for transmitting a probing signal that the stored probing sequence is converted according to the D/A operation speed to the wireless channel.
摘要翻译：提供了一种用于测量可变带宽无线信道的方法，以及用于其的发射机和接收机。发射机包括：预处理单元，用于根据预定的数模（D / A）操作速度和测量对原始序列进行可变过采样和带限滤波，以测量无线信道带宽，以及创建和存储其频率被上变频成固定发射中频的探测序列; 以及实时处理单元，用于将存储的探测序列根据D / A操作速度转换的探测信号发送到无线信道。

4. 发明申请

US20110312370A1 METHOD AND APPARATUS FOR SUPPORTING DISCONTINUOUS OPERATION OF BASE STATION IN WIRELESS COMMUNICATION SYSTEM AND CONTROL SYSTEM THEREOF 有权
标题翻译：支持无线通信系统中基站不间断运行的方法与装置及其控制系统
公开(公告)号：US20110312370A1
公开(公告)日：2011-12-22
申请号：US13254772
申请日：2010-03-02
申请人： Tae-Joong Kim , Kwang-Chun Lee , Jae-Heung Kim , Hyun-Kyu Chung
发明人： Tae-Joong Kim , Kwang-Chun Lee , Jae-Heung Kim , Hyun-Kyu Chung
IPC分类号： H04W36/00
CPC分类号： H04W52/0206 , H04W84/045 , Y02D70/1244 , Y02D70/1262 , Y02D70/142 , Y02D70/146 , Y02D70/24 , Y02D70/25
摘要： An operation control method in a base station of a wireless communication system includes: checking whether or not an allowed mobile station exists in coverage of the base station and overall coverage of base stations adjacent to the base station; and controlling the base station to perform transmission/reception at a predetermined period through a first discontinuous operation, when the allowed mobile station does not exist in the coverage of the base station and the overall coverage of the adjacent base stations.
摘要翻译：无线通信系统的基站中的操作控制方法包括：检查所允许的移动台是否存在于所述基站的覆盖范围内以及与所述基站相邻的基站的全面覆盖; 并且当允许的移动台不存在于基站的覆盖范围内并且相邻基站的总体覆盖范围时，通过第一不连续操作来控制基站在预定周期进行发送/接收。

5. 发明授权

US08018278B2 Pre-distortion apparatus of power amplifier and method thereof 有权
标题翻译：功率放大器预失真装置及其方法
公开(公告)号：US08018278B2
公开(公告)日：2011-09-13
申请号：US12883580
申请日：2010-09-16
申请人： Jae-Ho Jung , Gweon-Do Jo , Young-Hoon Kim , Jung-Hoon Oh , Kwang-Chun Lee
发明人： Jae-Ho Jung , Gweon-Do Jo , Young-Hoon Kim , Jung-Hoon Oh , Kwang-Chun Lee
IPC分类号： H03F1/26
CPC分类号： H03F1/3247 , H03F1/0266 , H03F3/189 , H03F3/24 , H03F2201/3233
摘要： A pre-distortion apparatus of a power amplifier includes: a pre-distortion unit configured to generate a pre-distorted signal of an input signal by calculating a magnitude of the input signal and outputting a complex correction coefficient corresponding to the calculated magnitude of the input signal, and provide the generated pre-distorted signal as an input of the power amplifier; and a complex correct coefficient update unit configured to generate an error signal by comparing an output signal of the power amplifier with the input signal and updating the complex correction coefficient to minimize a magnitude of the generated error signal, wherein the pre-distortion unit provides a constant bias value corresponding to the magnitude of the input signal as a bias of the power amplifier while updating the complex correction coefficient.
摘要翻译：功率放大器的预失真装置包括：预失真单元，被配置为通过计算输入信号的幅度来产生输入信号的预失真信号，并输出与所计算的输入的幅度相对应的复数校正系数信号，并且将生成的预失真信号提供给功率放大器的输入; 以及复数正确系数更新单元，其被配置为通过将所述功率放大器的输出信号与所述输入信号进行比较来生成误差信号，并更新所述复数校正系数以最小化所生成的误差信号的幅度，其中所述预失真单元提供对应于作为功率放大器的偏置的输入信号的大小的恒定偏置值，同时更新复数校正系数。

6. 发明授权

US07974180B2 Transmitting/receiving apparatus of wideband wireless channel apparatus using multiple carriers 失效
标题翻译：使用多个载波的宽带无线信道装置的发射/接收装置
公开(公告)号：US07974180B2
公开(公告)日：2011-07-05
申请号：US12096450
申请日：2006-12-05
申请人： Hyun-Kyu Chung , Kwang-Chun Lee
发明人： Hyun-Kyu Chung , Kwang-Chun Lee
IPC分类号： H04J11/00
CPC分类号： H04L25/022 , H04L25/025
摘要： The present invention relates to transmitting/receiving apparatuses of a wideband radio channel measuring device using a multi-carrier. The wideband radio channel measuring device using the multi-carrier may measure radio channel characteristics at a frequency domain. Since the radio channel is measured at the frequency domain by the wideband radio channel measuring device using the multi-carrier, the channel characteristics may be simultaneously measured while maintaining a maximum Doppler measurement frequency at a predetermined level regardless of increase of the number of transmitting and receiving antennas, in an MIMO configuration.
摘要翻译：本发明涉及使用多载波的宽带无线电信道测量装置的发射/接收装置。使用多载波的宽带无线电信道测量装置可以测量频域的无线电信道特性。由于通过使用多载波的宽带无线电信道测量装置在频域处测量无线电信道，所以可以同时测量信道特性，同时将最大多普勒测量频率保持在预定电平，而不管发射和发射次数的增加，接收天线。

7. 发明授权

US07840200B2 Antenna matching device and transceiver having the same 有权
标题翻译：天线匹配装置和收发器具有相同的功能
公开(公告)号：US07840200B2
公开(公告)日：2010-11-23
申请号：US11929863
申请日：2007-10-30
申请人： Byung-Su Kang , Jae-Ho Jung , Seong-Min Kim , Kwang-Chun Lee
发明人： Byung-Su Kang , Jae-Ho Jung , Seong-Min Kim , Kwang-Chun Lee
IPC分类号： H04B1/18
CPC分类号： H04B1/18
摘要： The present invention relates to an antenna matching device that varies a frequency bandwidth according to mobile communication services, and to a transceiver having the same. To this end, an exemplary embodiment of the present invention provides a transceiver that varies a frequency band and a bandwidth according to required services in a mobile communication system, the transceiver including an antenna matching controller that generates a prescribed switch control signal according to a service requested by a user, an antenna variable matching unit that variably forms a matching circuit according to the switch control signal to be transmitted from the antenna matching controller and varies the frequency band and the bandwidth, an analog processing unit that processes a signal to be transmitted/received through the antenna variable matching unit, and a wideband antenna that transmits/receives a radio frequency according to the frequency band and the bandwidth set by the antenna variable matching unit. Another exemplary embodiment of the present invention provides an antenna matching device including a resistor that reduces a frequency bandwidth, an inductor that reduces a frequency passing band, a capacitor and a resistor that increase the frequency passing band, and switches that control the operations of the inductor and the capacitor. According to the present invention, unnecessary radiation power of a variable matching unit can be minimized, and maximum transmission power required according to services can be reduced. In addition, system construction costs can be reduced, and a user capacity can be increased.
摘要翻译：本发明涉及根据移动通信业务改变频率带宽的天线匹配装置以及具有该天线匹配装置的收发信机。为此，本发明的示例性实施例提供了一种根据移动通信系统中的所需服务来改变频带和带宽的收发器，该收发器包括：天线匹配控制器，其根据服务产生规定的开关控制信号用户请求的天线可变匹配单元，根据要从天线匹配控制器发送的切换控制信号可变地形成匹配电路并改变频带和带宽;模拟处理单元，处理要传输的信号通过天线可变匹配单元接收的宽带天线，以及根据由天线可变匹配单元设定的频带和带宽发射/接收射频的宽带天线。本发明的另一个示例性实施例提供了一种天线匹配装置，其包括降低频率带宽的电阻器，减小频率通过的电感器，增加频率通过频带的电容器和电阻器，以及控制电感和电容。根据本发明，可以使可变匹配单元的不必要的辐射功率最小化，并且可以减少根据服务所需的最大发射功率。此外，可以降低系统构造成本，能够提高用户容量。

8. 发明申请

US20100146021A1 MODULAR-3 CALCULATION APPARATUS AND METHOD 审中-公开
标题翻译： MODULAR-3计算装置和方法
公开(公告)号：US20100146021A1
公开(公告)日：2010-06-10
申请号：US12630150
申请日：2009-12-03
申请人： Gweon-Do Jo , Joon-Hyung Kim , Jae-Ho Jung , Kwang-Chun Lee
发明人： Gweon-Do Jo , Joon-Hyung Kim , Jae-Ho Jung , Kwang-Chun Lee
IPC分类号： G06F7/72
CPC分类号： G06F7/727
摘要： A modular-3 calculation method for binary number includes: determining whether two 1s consecutive from MSB exist in a binary number, when a target value for modular-3 calculation is inputted, and generating a first binary number by substituting the two 1s with 0 whenever the consecutive two 1s exist; performing a modular-3 calculation on the first binary number; and determining the result of the modular-3 calculation.
摘要翻译：用于二进制数的模块3计算方法包括：当输入用于模块3计算的目标值时，确定从MSB连续存在的两个1是否存在二进制数，并且通过用0代替两个1来产生第一个二进制数连续两个1存在; 对第一个二进制数执行模块3计算; 并确定模块3计算的结果。

9. 发明授权

US07518563B2 Windmill-shaped loop antenna having parasitic loop antenna 失效
标题翻译：具有寄生环形天线的风车环形天线
公开(公告)号：US07518563B2
公开(公告)日：2009-04-14
申请号：US11735169
申请日：2007-04-13
申请人： Sung-Jun Lee , Kwang-Chun Lee , Chi-Hyung Ahn , Doo-Soo Kim , Wee-Sang Park
发明人： Sung-Jun Lee , Kwang-Chun Lee , Chi-Hyung Ahn , Doo-Soo Kim , Wee-Sang Park
IPC分类号： H01Q11/12
CPC分类号： H01Q1/38 , H01Q7/00
摘要： There is provided a windmill-shaped loop antenna including: a dielectric substrate; a first radiation unit disposed on a top surface of the dielectric substrate and including a metal pattern having loop pieces; a second radiation unit disposed at a bottom surface of the dielectric substrate and including a metal pattern having loop pieces arranged not to face the loop pieces of the first radiation unit; and a plurality of identical transmission line from a center of the top and bottom surfaces of the dielectric substrate to the first and second radiation units, which form windmill-shaped metal pattern with the first and second radiation unit.
摘要翻译：提供了一种风车形环形天线，包括：电介质基板; 第一辐射单元，设置在电介质基板的顶表面上并且包括具有环形件的金属图案; 第二辐射单元，设置在所述电介质基板的底表面处，并且包括金属图案，所述金属图案具有被布置成不面对所述第一辐射单元的环形片的环片; 以及从电介质基板的顶表面和底表面的中心到第一和第二辐射单元的多条相同的传输线，其与第一和第二辐射单元形成风车形金属图案。

10. 发明申请

US20070133698A1 Device for compensating radio frequency distortion in orthogonal frequency division multiplexing transmission system and method thereof 有权
标题翻译：用于补偿正交频分复用传输系统中射频失真的装置及其方法
公开(公告)号：US20070133698A1
公开(公告)日：2007-06-14
申请号：US11527787
申请日：2006-09-27
申请人： Jae-Ho Jung , Byung-Su Kang , Joon-Hyung Kim , Heon-Kook Kwon , Sung-Jun Lee , Kwang-Chun Lee
发明人： Jae-Ho Jung , Byung-Su Kang , Joon-Hyung Kim , Heon-Kook Kwon , Sung-Jun Lee , Kwang-Chun Lee
IPC分类号： H04K1/10
CPC分类号： H04L27/2628 , H04L2027/003
摘要： The present invention relates to a device for compensating a radio frequency distortion caused by a sample/hold operation of a digital/analog converter in an orthogonal frequency division multiplexing (OFDM) transmission system, and a method thereof. In a digital transmission system, an edge frequency signal of a transmission signal band is distorted by a sample/hold operation of a digital/analog converter such that a signal attenuation is generated at a frequency domain by a sync function having a zero point at a sample frequency of a transmission signal. In the present invention, the signal distortion may be compensated by multiplying a coefficient of an inverse sync function by a signal weight value at the frequency domain, and it may be compensated by using a single multiplier and a lookup table storing the coefficient of the inverse sync function.
摘要翻译：本发明涉及一种用于补偿由正交频分复用（OFDM）传输系统中的数/模转换器的采样/保持操作引起的射频失真的装置及其方法。在数字传输系统中，传输信号频带的边缘频率信号被数/模转换器的采样/保持操作失真，使得在频域上通过具有零点的同步功能产生信号衰减发送信号的采样频率。在本发明中，可以通过将反相位函数的系数乘以频域的信号权重值来补偿信号失真，并且可以通过使用单个乘法器和存储反相的系数的查找表来补偿信号失真同步功能

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式