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    • 1. 发明授权
    • Terahertz continuous wave generator
    • 太赫兹连续波发生器
    • US08730567B2
    • 2014-05-20
    • US13291225
    • 2011-11-08
    • Sungil KimKwang-Yong KangDong Suk Jun
    • Sungil KimKwang-Yong KangDong Suk Jun
    • G02F1/35G02F1/01H01S3/00
    • G02F1/3534G02F1/2255G02F2203/13H01S3/0078
    • A terahertz continuous wave generator includes: an optical intensity modulator configured to modulate an optical signal into DSB optical signals; a local oscillator configured to generate a modulation signal for modulating the optical signal inputted to the optical intensity modulator into DSB optical signals; a notch filter configured to filter an optical signal with a specific frequency; an optical fiber amplifier configured to amplify an output signal of the optical intensity modulator; an optical circulator configured to transmit the optical signal inputted to the optical fiber amplifier to the notch filter and transmit the optical signal reflected from the notch filter to an input of the optical intensity modulator; an optical coupler configured to apply the optical signal to the optical intensity modulator; and an OE converter configured to photomix the DSB signals outputted through the notch filter.
    • 太赫兹连续波发生器包括:光强调制器,被配置为将光信号调制成DSB光信号; 本地振荡器,被配置为产生用于将输入到所述光强度调制器的光信号调制成DSB光信号的调制信号; 陷波滤波器,被配置为滤波具有特定频率的光信号; 配置为放大所述光强调制器的输出信号的光纤放大器; 光循环器,被配置为将输入到光纤放大器的光信号发送到陷波滤波器,并将从陷波滤波器反射的光信号发射到光强度调制器的输入端; 光耦合器,被配置为将光信号施加到光强度调制器; 以及被配置为对通过陷波滤波器输出的DSB信号进行光混合的OE转换器。
    • 7. 发明授权
    • Isolator/circulator having propeller resonator loaded with a plurality of symmetric magnetic walls
    • 隔离器/循环器具有装载有多个对称磁性壁的螺旋桨谐振器
    • US06646515B2
    • 2003-11-11
    • US10075825
    • 2002-02-12
    • Dong-suk JunSang-seok LeeTae-goo Choy
    • Dong-suk JunSang-seok LeeTae-goo Choy
    • H01P1387
    • H01P1/387
    • A microstripline/stripline included in an isolator/circulator is provided. The microstripline/stripline includes a resonator including a plurality of symmetric propellers, which are capable of transmitting signals in a single direction, slot formation units formed between the propellers to allow magnetic walls to be symmetrically generated and each including a plurality of slots, transfer tracks for bandwidth expansion formed at a side of each of the propellers within the range of the distance (the circumscribed radius of the resonator) between the center of the resonator and the outermost edge of the propeller, and ports formed at the ends of the transfer tracks. The microstripline/stripline further includes a coupler for detecting a reverse signal formed at the port, to which a load resistor is connected, and an indicator for indicating the reverse signal detected by the coupler in order to detect the state of the isolator and a system including the isolator. Accordingly, it is possible to manufacture a microstripline/stripline isolator/circulator to have a low insertion loss, high isolation, a wide bandwidth, a compact size, a low price, a simple structure, and a light weight, and it is possible to observe the state of the microstripline/stripline isolator/circulator and a system including the microstripline/stripline isolator/circulator.
    • 提供了包括在隔离器/循环器中的微带线/带状线。 微带线/带状线包括包括多个对称螺旋桨的谐振器,其能够沿单个方向传输信号,形成在螺旋桨之间的槽形成单元,以允许对称地产生磁壁并且每个包括多个槽,传输轨道 在谐振器的中心和螺旋桨的最外边缘之间的距离(共振器的外接半径)的范围内形成在每个螺旋桨的一侧的带宽膨胀,以及形成在传送轨道的端部的端口 。 微带线/带状线还包括用于检测在端口处形成的反向信号的耦合器,负载电阻器连接到该反向信号,以及用于指示耦合器检测到的反向信号的指示器,以便检测隔离器的状态和系统 包括隔离器。 因此,可以制造具有低插入损耗,高隔离度,宽带宽,紧凑尺寸,低价格,简单结构和重量轻的微带线/带状线隔离器/环行器,并且可以 观察微带线/带状线隔离器/循环器的状态以及包括微带线/带状线隔离器/循环器的系统。
    • 9. 发明授权
    • Microwave filter with U-type resonator
    • 带U型谐振器的微波滤波器
    • US6054909A
    • 2000-04-25
    • US137711
    • 1998-08-21
    • Chang Hwa LeeMyung Soo KimBon Hee KooDong Suk JunSang Seok LeeTae Goo Choy
    • Chang Hwa LeeMyung Soo KimBon Hee KooDong Suk JunSang Seok LeeTae Goo Choy
    • H01P1/205H01P7/04
    • H01P1/2056
    • The present invention relates to a microwave filter, having U-type resonators, which passes a desired frequency signal and removes an undesired frequency signal when used in a high frequency antenna circuit for wireless communication systems. In accordance with the trend of reducing communication system terminals, it is required to reduce a high frequency filter. The high frequency filter is required to attenuate signals very sharply at the stop band especially near to a passband transmitting and receiving frequency, so as to improve the efficiency of the frequency. The filter may be reduced in weight by forming U-type resonators instead of straight-type resonators. Excellent attenuation characteristics may be achieved at the stop band lower than the passband, using the difference of the characteristic impedance between the open end portion and the shorted portion of the resonator by forming the coupling control grooves at the outer walls of the dielectric block.
    • 本发明涉及一种具有U型谐振器的微波滤波器,当用于无线通信系统的高频天线电路中时,该滤波器通过期望的频率信号并去除非期望的频率信号。 根据减少通信系统终端的趋势,需要降低高频滤波器。 需要高频滤波器在阻带处非常清晰地衰减信号,特别是靠近通带发射和接收频率,以提高频率的效率。 通过形成U型谐振器而不是直型谐振器,可以减小滤波器的重量。 通过在介质块的外壁处形成耦合控制槽,可以通过使用谐振器的开口端部分和短路部分之间的特性阻抗的差异,在低于通带的阻带处获得优异的衰减特性。