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    • 2. 发明授权
    • Optical module and optical module package
    • 光模块和光模块封装
    • US07553092B2
    • 2009-06-30
    • US11450743
    • 2006-06-08
    • Kwang Seong ChoiYong Duck ChungYoung Shik KangDong Suk JunJe Ha KimJong Tae Moon
    • Kwang Seong ChoiYong Duck ChungYoung Shik KangDong Suk JunJe Ha KimJong Tae Moon
    • G02B6/36
    • G02F1/0121G02B6/4201G02B6/4279H01L2224/48091H01L2924/3011H01L2924/00014H01L2924/00
    • Provided is an optical module used in a communication system employing a radio over fiber (ROF) technology delivering a radio frequency (RF) signal through an optical fiber. The optical module includes: an optical device; a signal line for transporting a radio frequency (RF) signal input from an external circuit to the optical device; and a resistor separately disposed from the signal line and having one end connected with the optical device, wherein the input impedance seen from the signal line is matched by the resistor. A bias voltage supplied to operate the optical device is applied through an inductor connected to the signal line between the optical device and a filter. Here, the filter formed by a pattern of the signal line prevents the bias voltage from being supplied to the external circuit. In order to amplify the RF signal input from the external circuit, an amplifier may be connected between the external circuit and the filter.
    • 提供了一种用于通过光纤传送射频(RF)信号的无线电光纤(ROF)技术的通信系统中的光学模块。 光学模块包括:光学装置; 用于将从外部电路输入的射频(RF)信号传送到光学装置的信号线; 以及与信号线分开设置并且具有与光学装置连接的一端的电阻,其中从信号线看到的输入阻抗由电阻器匹配。 提供用于操作光学器件的偏置电压通过连接到光学器件和滤光器之间的信号线的电感器施加。 这里,由信号线的图案形成的滤波器防止偏置电压被提供给外部电路。 为了放大从外部电路输入的RF信号,可以在外部电路和滤波器之间连接放大器。
    • 4. 发明授权
    • Device and method for separation/conversion of multiband signal
    • 用于分离/转换多频段信号的装置和方法
    • US08335200B2
    • 2012-12-18
    • US12676749
    • 2008-05-23
    • Yong Duck ChungKwang Seong ChoiJae Sik SimYong Hwan KwonSung Bok KimJe Ha Kim
    • Yong Duck ChungKwang Seong ChoiJae Sik SimYong Hwan KwonSung Bok KimJe Ha Kim
    • H04H1/00
    • H04B10/25759H04W88/10
    • Provided are a method and device for separating and converting multiband signals. The device includes a photoelectric converter for converting an externally received optical signal into an electrical signal, a first switch for separating the converted electrical signal into signals according to frequency bands, a first mobile communication band-pass amplifier for amplifying a mobile communication network signal of the signals separated by the first switch, a broadband up-converter for up-converting a baseband signal of the signals separated by the first switch into a broadband signal, a first broadband amplifier for amplifying the broadband signal output from the broadband up-converter, and a transmitter for wirelessly transmitting the signals amplified by the first mobile communication band-pass amplifier and the first broadband amplifier.
    • 提供了用于分离和转换多频带信号的方法和装置。 该装置包括用于将外部接收的光信号转换为电信号的光电转换器,用于根据频带将转换后的电信号分离为信号的第一开关,用于放大移动通信网络信号的第一移动通信带通放大器 由第一开关分离的信号,用于将由第一开关分离的信号的基带信号上变频为宽带信号的宽带上变频器,用于放大从宽带上变频器输出的宽带信号的第一宽带放大器, 以及用于无线地发送由第一移动通信带通放大器和第一宽带放大器放大的信号的发射机。