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    • 22. 发明授权
    • Semiconductor optical device and method for fabricating the same
    • 半导体光学器件及其制造方法
    • US06469313B2
    • 2002-10-22
    • US10026809
    • 2001-12-27
    • Wook KimTae Kyung Yoo
    • Wook KimTae Kyung Yoo
    • H01L2906
    • H01S5/02H01L21/02389H01L21/0242H01L21/02458H01L21/0254H01L21/0262H01L21/02639H01L21/02647H01L33/10H01S5/0205H01S5/32341H01S2304/12
    • A semiconductor optical device and a method for fabricating the same. The semiconductor optical device comprises a substrate, a semiconductor electrode layer of a first conductive type formed on the substrate and having a groove formed to a desired depth therein, a semiconductor layer of the first conductive type formed from side walls of the groove up to a part of the semiconductor electrode layer of the first conductive type on the periphery of the groove, a cladding layer of the first conductive type, an active layer of the first conductive type, a cladding layer of a second condcutive type and a semiconductor electrode layer of the second conductive type sequentially formed on the semiconductor layer of the first conductive type, and electrodes of the first and second conductive types formed respectively on the semiconductor electrode layers of the first and second conductive types.
    • 一种半导体光学器件及其制造方法。 半导体光学器件包括衬底,形成在衬底上的第一导电类型的半导体电极层,并且具有形成在其中所需深度的沟槽;第一导电类型的半导体层由沟槽的侧壁形成直到 在槽周边的第一导电类型的半导体电极层的一部分,第一导电类型的包覆层,第一导电类型的有源层,第二固化型的包覆层和半导体电极层 顺序地形成在第一导电类型的半导体层上的第二导电类型以及分别形成在第一和第二导电类型的半导体电极层上的第一和第二导电类型的电极。
    • 23. 发明授权
    • Apparatus and method for delay time computation and delay compensation between base station and remote radio frequency unit in broadband wireless access system
    • 宽带无线接入系统中基站与远程射频单元之间的延迟时间计算和延迟补偿的装置和方法
    • US08363563B2
    • 2013-01-29
    • US12683663
    • 2010-01-07
    • Tae-Hwan KoWook KimIk-Gon KimJae-Jin KimHyun-Jin YoonJi-Yong Lee
    • Tae-Hwan KoWook KimIk-Gon KimJae-Jin KimHyun-Jin YoonJi-Yong Lee
    • H04L12/26
    • H04L43/0852
    • An apparatus and method for delay time computation and delay compensation between a Base Station (BS) and a remote Radio Frequency (RF) unit in a broadband wireless access system are provided. In a method of operating an apparatus for determining a delay time to compensate for delay between a BS modem card and a remote RF unit in a wireless access system, the method includes determining a process delay time required when traffic data is output from the BS modem card to an antenna of the remote RF unit in a state where a reference cable having a length short enough to neglect a cable delay time is connected between the BS modem card and the remote RF unit, determining a cable delay time required when a sync pulse signal is transmitted through a cable used in actual system operation between the BS modem card and the remote RF unit, and determining a time for outputting traffic data at an earlier time from a modem included in the BS modem card by using the determined process delay time and cable delay time.
    • 提供了一种在宽带无线接入系统中的基站(BS)和远程射频(RF)单元之间的延迟时间计算和延迟补偿的装置和方法。 在一种操作用于确定延迟时间以补偿无线接入系统中的BS调制解调器卡和远程RF单元之间的延迟的装置的方法中,所述方法包括确定当从BS调制解调器输出业务数据时所需的处理延迟时间 卡到远程RF单元的天线,其中具有足够短的长度以忽略电缆延迟时间的参考电缆连接在BS调制解调器卡和远程RF单元之间,确定当同步脉冲 信号通过在BS调制解调器卡和远程RF单元之间的实际系统操作中使用的电缆传输,并且通过使用确定的处理延迟时间确定从包括在BS调制解调器卡中的调制解调器在较早时间输出业务数据的时间 和电缆延迟时间。