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    • 11. 发明申请
    • APPARATUS AND METHOD FOR ENVELOPE TRACKING POWER AMPLIFIER IN WIRELESS COMMUNICATION SYSTEM
    • 无线通信系统中用于跟踪功率放大器的装置和方法
    • US20110058601A1
    • 2011-03-10
    • US12876555
    • 2010-09-07
    • Shin-Ho KIMHyung-Weon Park
    • Shin-Ho KIMHyung-Weon Park
    • H03K7/08H04L27/00
    • H04L27/366H03F1/0266
    • An apparatus and method for amplifying a Transmit (Tx) signal according to an Envelope Tacking (ET) scheme in a wireless communication system are provided. A transmitting end apparatus includes an envelope gain controller for controlling a gain of a digital baseband Tx signal in accordance with power control, a detector for detecting an envelope signal from the digital baseband Tx signal whose gain is controlled, and for shaping on the envelope signal, a first Digital to Analog Converter (DAC) for converting the shaped envelope signal into an analog signal, and an envelope modulator for generating a drain bias of a power amplifier that amplifies a Radio Frequency (RF) Tx signal by using the analog envelope signal. Accordingly, a digital-based ET scheme is implemented, and by using a plurality of shaping tables, efficiency of the ET scheme can be maximized in a transmitting end that uses power control.
    • 提供了一种用于在无线通信系统中根据信封贴(ET)方案放大发送(Tx)信号的装置和方法。 发送端装置包括:包络增益控制器,用于根据功率控制来控制数字基带Tx信号的增益;检测器,用于检测来自其增益被控制的数字基带Tx信号的包络信号,以及对包络信号进行整形 ,用于将成形包络信号转换为模拟信号的第一数模转换器(DAC)和用于产生放大射频(RF)Tx信号的功率放大器的漏极偏置的包络调制器,该功率放大器通过使用模拟包络信号 。 因此,实现基于数字的ET方案,并且通过使用多个整形表,可以在使用功率控制的发送端最大化ET方案的效率。
    • 12. 发明授权
    • Power saving transmitter of mobile communication terminal
    • 移动通信终端节电发射机
    • US07450917B2
    • 2008-11-11
    • US10998513
    • 2004-11-29
    • Seung-Hwan KimWoo-Yong LeeHyung-Weon Park
    • Seung-Hwan KimWoo-Yong LeeHyung-Weon Park
    • H04B1/04
    • H04B1/04
    • A transmitter of a mobile communication terminal including a transmission signal processor for receiving a data signal to be transmitted, modulating the data signal into a radio signal, and outputting the radio signal. A local oscillator device provides the transmission signal processor with a local oscillator signal and a modem for outputs a control signal to power on the transmission signal processor and the local oscillator device when a voice signal is input through a microphone. A delay device for delays the control signal from the modem and provides the transmission signal processor with the delayed control signal.
    • 一种移动通信终端的发射机,包括用于接收要发射的数据信号的发射信号处理器,将数据信号调制成无线电信号,并输出无线电信号。 本地振荡器装置向传输信号处理器提供本地振荡器信号和调制解调器,用于当通过麦克风输入语音信号时输出控制信号以对传输信号处理器和本地振荡器装置供电。 延迟装置,用于延迟来自调制解调器的控制信号,并向传输信号处理器提供延迟的控制信号。
    • 14. 发明申请
    • Multimode/Multiband Mobile Station and Method for Operating the Same
    • 多模/多频移动台及其操作方法
    • US20070243832A1
    • 2007-10-18
    • US10585755
    • 2005-03-15
    • Hyung-Weon ParkWoo-Yong LeeYoung-Il SonSeong-Eun KimMichael BrobstonLup Loh
    • Hyung-Weon ParkWoo-Yong LeeYoung-Il SonSeong-Eun KimMichael BrobstonLup Loh
    • H04B1/38
    • H04B1/006H04B1/406
    • A multimode/multiband mobile station and a method for operating the same are provided. A transmission module transmits multimode/multiband signals through transmitters. A reception module receives radio signals for different services of the same frequency band among multimode/multiband signals through receivers for the same frequency band, and receives radio signals of different frequency bands among the multimode/multiband signals through receivers for the different frequency bands. As compared with the conventional mobile station, the multimode/multiband mobile station can reduce the number of receivers by making use of one receiver to receive radio signals for different services of the same frequency band. The multimode/multiband mobile station can use a duplexer of the conventional frequency division duplex (FDD) technique (e.g., wideband code division multiple access (WCDMA)) in a time division duplex (TDD) technique (e.g., Global System for Mobile Communication (GSM) 850 or Personal Communication Service (PCS) 1900).
    • 提供了一种多模/多频移动台及其操作方法。 传输模块通过发射机传输多模/多频带信号。 接收模块通过相同频带的接收机在多模/多频信号之间接收不同业务频带的无线信号,并通过不同频带的接收机在多模/多频信号之间接收不同频带的无线信号。 与常规移动台相比,多模/多频移动台可以通过使用一个接收机来接收用于相同频带的不同业务的无线电信号来减少接收机的数量。 多模/多频移动台可以在时分双工(TDD)技术中使用常规频分双工(FDD)技术的双工器(例如宽带码分多址(WCDMA))(例如,全球移动通信系统 GSM)850或个人通信业务(PCS)1900)。
    • 15. 发明申请
    • Multi-mode-multi-band wireless transceiver
    • 多模多频无线收发器
    • US20070042802A1
    • 2007-02-22
    • US11505641
    • 2006-08-17
    • Hyung-Weon ParkYoung-Il SonWoo-Yong Lee
    • Hyung-Weon ParkYoung-Il SonWoo-Yong Lee
    • H04M1/00
    • H04B1/406H04B1/006H04B1/0071H04B1/52
    • Disclosed is a multi-mode/multi-band wireless transceiver. The multi-mode/multi-band wireless transceiver includes a tunable duplexer including transmission and reception channel filters of which transmission and reception channel filtering frequencies respectively are controlled by an external element; and a control portion for controlling the transmission and reception channel filtering frequencies to correspond to transmission and reception channels of a current service band. Thus, a use of a RF SAW filter is unnecessary, while it is possible to support the multi-mode/multi-band using a tunable duplexer. Therefore, the number of parts and volume of the transceiver can be reduced, and it is possible to weaken a specification of an RF system.
    • 公开了一种多模/多频无线收发器。 多模/多频无线收发器包括可调谐双工器,其包括传输和接收信道滤波器,发射和接收信道滤波频率分别由外部元件控制; 以及用于控制发送和接收信道过滤频率以对应于当前服务频带的发送和接收信道的控制部分。 因此,不需要使用RF SAW滤波器,而可以使用可调谐双工器来支持多模/多频带。 因此,可以减少收发器的部件和体积的数量,并且可以削弱RF系统的规格。
    • 19. 发明申请
    • Transmitter of mobile communication terminal
    • 移动通信终端发射机
    • US20050181747A1
    • 2005-08-18
    • US10998513
    • 2004-11-29
    • Seung-Hwan KimWoo-Yong LeeHyung-Weon Park
    • Seung-Hwan KimWoo-Yong LeeHyung-Weon Park
    • H04B1/04
    • H04B1/04
    • A transmitter of a mobile communication terminal including a transmission signal processor for receiving a data signal to be transmitted, modulating the data signal into a radio signal, and outputting the radio signal. A local oscillator device provides the transmission signal processor with a local oscillator signal and a modem for outputs a control signal to power on the transmission signal processor and the local oscillator device when a voice signal is input through a microphone. A delay device for delays the control signal from the modem and provides the transmission signal processor with the delayed control signal.
    • 一种移动通信终端的发射机,包括用于接收要发射的数据信号的发射信号处理器,将数据信号调制成无线电信号,并输出无线电信号。 本地振荡器装置向传输信号处理器提供本地振荡器信号和调制解调器,用于当通过麦克风输入语音信号时输出控制信号以对传输信号处理器和本地振荡器装置供电。 延迟装置,用于延迟来自调制解调器的控制信号,并向传输信号处理器提供延迟的控制信号。
    • 20. 发明授权
    • Apparatus and method for receiving quick paging message in mobile station
    • 用于在移动台中接收快速寻呼消息的装置和方法
    • US06928293B2
    • 2005-08-09
    • US10109257
    • 2002-03-27
    • Hyung-Weon ParkSang-Kyun Park
    • Hyung-Weon ParkSang-Kyun Park
    • H04B1/40H04W68/00H04B1/38H04B1/69H04M1/00H04Q7/00
    • H04W68/00Y02D70/00
    • An apparatus and method for receiving a quick paging message in a mobile station wherein a controller for synchronizing with a second clock in a predetermined time slot and transmitting a command for obtaining a synchronization at a frequency of receiving the quick paging message where the MS selects a clock having a first period as an operation clock under the second mode and under the first mode, selects a clock having a second period earlier than the first period; a dual phase-locked loop operating in response to the clock selected by the controller, for synchronizing with frequency in response to the command from the controller; a oscillator for oscillating at the synchronized frequency with the dual phase-locked loop; and a radio frequency part for receiving the quick paging message over a forward quick paging channel synchronously with the oscillating frequencies.
    • 一种用于在移动站中接收快速寻呼消息的装置和方法,其中控制器用于与预定时隙中的第二时钟进行同步,并且以接收所述快速寻呼消息的频率发送用于获得同步的命令,其中MS选择 在第二模式和第一模式下具有第一周期作为操作时钟的时钟选择具有比第一周期早的第二周期的时钟; 响应于由控制器选择的时钟而工作的双锁相环,用于响应于来自控制器的命令与频率同步; 振荡器,与双锁相环以同步频率振荡; 以及用于通过与振荡频率同步的前向快速寻呼信道接收快速寻呼消息的射频部分。