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    • 22. 发明申请
    • Remote antenna unit and wavelength division multiplexing radio-over-fiber network
    • 远程天线单元和波分复用无线光纤网络
    • US20060222369A1
    • 2006-10-05
    • US11398324
    • 2006-04-04
    • Yong-Gyoo KimGyu-Woong LeeSeong-Taek Hwang
    • Yong-Gyoo KimGyu-Woong LeeSeong-Taek Hwang
    • H04B10/00
    • H04B10/25755
    • Disclosed is a remote antenna unit and a wavelength division multiplexing network. The remote antenna unit includes: an optical circulator having a plurality of ports; an electric field absorption modulator having a first input/output end and a second reflective end, the electric field absorption modulator configured to demodulate an optical signal into a first data signal, and modulate the demodulated optical signal according to a second electric data signal; and a filter disposed between the optical circulator and the electric field absorption modulator, for the filter configured to transmit an optical signal having a particular wavelength from among optical signals input from a port of the optical circulator toward the electric field absorption modulator and reflecting the remaining optical signals into the port of the optical circulator, and inputting the optical signal from the electric field absorption modulator into the port of the optical circulator.
    • 公开了一种远程天线单元和波分复用网络。 远程天线单元包括:具有多个端口的光循环器; 具有第一输入/输出端和第二反射端的电场吸收调制器,所述电场吸收调制器被配置为将光信号解调为第一数据信号,并根据第二电数据信号调制解调的光信号; 以及设置在所述光循环器和所述电场吸收调制器之间的滤波器,所述滤波器被配置为从从所述光循环器的端口向所述电场吸收调制器输入的光信号中发射具有特定波长的光信号,并反射剩余的 光信号进入光环行器的端口,并将来自电场吸收调制器的光信号输入光环行器的端口。
    • 23. 发明授权
    • ROF link system for supporting various services
    • ROF链路系统支持各种业务
    • US07796891B2
    • 2010-09-14
    • US11633838
    • 2006-12-05
    • Han-Lim LeeSeong-Taek HwangByung-Jik KimGyu-Woong LeeHoon KimJae-Hoon LeeYong-Gyoo KimSang-Ho KimSung-Kee Kim
    • Han-Lim LeeSeong-Taek HwangByung-Jik KimGyu-Woong LeeHoon KimJae-Hoon LeeYong-Gyoo KimSang-Ho KimSung-Kee Kim
    • H04B10/00
    • H04B10/25758H04H20/69H04H20/71H04W88/085H04W88/10
    • Disclosed is a radio-over-fiber (ROF) system for supporting various services, the system comprising: a central access platform (CAP) for providing time division duplexing (TDD), frequency division duplexing (FDD), and broadcasting services, converting a TDD downward signal and FDD/broadcasting downward signals into optical signals, respectively, transmitting the converted optical signals to a remote access unit (RAU), converting a TDD upward signal and an FDD upward signal, which have been transmitted as optical signals from the RAU, into electric signals, respectively, and using an optical circulator in order to separate upward and downward signals from each other; and the RAU for converting the TDD downward signal and FDD/broadcasting downward signals transmitted from the CAP into electric signals, respectively, converting the TDD upward signal and FDD upward signal to be transmitted to the CAP into optical signals, respectively, and using an optical circulator in order to separate upward and downward signals from each other, wherein the RAU includes a plurality of signal filtering/separating/combining units, which wirelessly emit the TDD downward signal and FDD/broadcasting downward signals, having been converted into electric signals, through an antenna, and which separate wirelessly-received TDD upward signal and FDD upward signal from each other.
    • 公开了用于支持各种业务的无线电光纤(ROF)系统,该系统包括:用于提供时分双工(TDD),频分双工(FDD)和广播服务的中央接入平台(CAP) TDD向下信号和FDD /广播向下信号分别转换成光信号,将转换后的光信号发送到远程接入单元(RAU),转换已经作为光信号从RAU发送的TDD上行信号和FDD向上信号 分别变成电信号,并使用光循环器,以便彼此分离上下信号; 以及分别将从CAP发送的TDD向下信号和FDD /广播向下信号转换成电信号的RAU,分别将TDD向上信号和FDD向上信号转换为发送到CAP的光信号,并使用光 循环器,以便彼此分离上下信号,其中RAU包括多个信号滤波/分离/组合单元,其经过转换成电信号无线地发射TDD向下信号和FDD /广播向下信号,通过 天线,并且将无线接收的TDD上行信号和FDD上行信号彼此分离。
    • 25. 发明申请
    • Optical network for bi-directional wireless communication
    • 用于双向无线通信的光网络
    • US20060062579A1
    • 2006-03-23
    • US11202505
    • 2005-08-12
    • Yong-Gyoo KimSeong-Taek Hwang
    • Yong-Gyoo KimSeong-Taek Hwang
    • H04B10/00
    • H04B10/25758
    • An optical network for bi-directional wireless communication is disclosed. The optical network includes a remote antenna unit for converting a downlink optical signal into a downlink radio signal, transmitting the downlink radio signal wirelessly, and converting an uplink radio signal received wirelessly into an uplink optical signal. An optical line is used as a transmission medium of the downlink optical signal and the uplink optical signal. The optical network also includes a central base station including a circulator linked to the remote antenna unit through the optical line, so that the central base station outputs the downlink optical signal to the remote antenna unit through the circulator and detects the uplink optical signal inputted through the circulator.
    • 公开了一种用于双向无线通信的光网络。 该光网络包括用于将下行链路光信号转换为下行链路无线电信号的远程天线单元,以无线方式发送下行链路无线电信号,并将无线接收的上行链路无线电信号转换为上行链路光信号。 光线被用作下行光信号和上行光信号的传输介质。 光网络还包括中央基站,包括通过光线路连接到远程天线单元的循环器,使得中央基站通过循环器将下行链路光信号输出到远程天线单元,并检测通过 循环器。
    • 30. 发明授权
    • Thermoelectric refrigerator/warmer using no external power, and
refrigerating/warming method
    • 热电冰箱/加热器不使用外部电源,以及制冷/升温方式
    • US5987891A
    • 1999-11-23
    • US93719
    • 1998-06-09
    • Yong-Gyoo KimChang-Ho SongKee-Sool GamKee-Hoon KangJeong-Hoon Lee
    • Yong-Gyoo KimChang-Ho SongKee-Sool GamKee-Hoon KangJeong-Hoon Lee
    • F25B21/04F25B27/00H01L35/00F25B21/02
    • F25B21/04F25B27/002H01L35/00
    • A thermoelectric refrigerator/warmer using no external power, and a refrigerating/warming method are disclosed. A natural energy such as the solar energy is utilized so as to make an external power needless. Thus a thermoelectric device is made to convert the natural energy into electric power based on the difference between the internal and external temperatures, and this electric energy is converted again into a thermal energy by means of a peltier device, thereby varying the internal temperature of the apparatus. An outer part 4 of a thermoelectric device 3 is attached on the side face of the refrigerator/warmer, and an inner part 5 of it is attached on a bottom plate 7 of the refrigerator/warmer. Thus a thermoelectromotive force is generated based on the temperature difference between outside and inside of the refrigerator/warmer. The voltage thus generated is supplied to a peltier device 6 to cool or heat the bottom plate 7. In this manner, the thermoelectric refrigerator/warmer can be operated even without using an external power.
    • 公开了不使用外部电力的热电冰箱/暖风机,制冷·升温方式。 利用诸如太阳能的自然​​能量来使外部电力不必要。 因此,制造热电装置以基于内部和外部温度之间的差异将天然能量转换成电力,并且该电能通过珀耳帖装置再次转换成热能,从而改变内部温度 仪器。 热电装置3的外部部分4安装在冰箱/暖气机的侧面上,其内部部分5安装在冰箱/暖气机的底板7上。 因此,基于冰箱/暖气机的外部和内部之间的温差产生热电动势。 这样产生的电压被提供给珀尔帖装置6以冷却或加热底板7.以这种方式,即使不使用外部电力也可以操作热电冰箱/加热器。