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    • 53. 发明公开
    • Forward converter with self-driven synchronous rectifiers
    • 正向转换器采用自驱动同步整流器
    • EP2040365A2
    • 2009-03-25
    • EP08162527.9
    • 2008-08-18
    • GlacialTech., Inc.Wang, Chih-Liang
    • Wang, Chih-LiangYu, Ching-Sheng
    • H02M3/335
    • H02M3/33592H02M3/33561Y02B70/1475
    • The present invention relates to a forward converter with self-driven synchronous rectifiers, which utilizes a secondary driving winding and a secondary driving circuit to drive the synchronous rectifiers in the secondary power loop. The secondary driving circuit, which is composed of a level shifter and a signal distributor, can shift the voltage waveform across the secondary driving winding by a predetermined level and distribute proper driving signals to the synchronous rectifiers to reduce the rectifier conduction loss. Specially, the channel of the freewheeling synchronous rectifier still can be turned on during the dead interval to further reduce the body diode conduction loss.
    • 本发明涉及一种具有自驱动同步整流器的正激变换器,其利用次级驱动绕组和次级驱动电路来驱动次级功率回路中的同步整流器。 由电平移动器和信号分配器组成的次级驱动电路可以将次级驱动绕组两端的电压波形移动预定电平,并将适当的驱动信号分配给同步整流器以减少整流器的导通损耗。 特别是续流同步整流器的通道仍然可以在死区间导通,以进一步降低体二极管导通损耗。
    • 58. 发明公开
    • Scheduling method for wireless multihop relay communication system and system thereof
    • Koordinationsverfahrenfürein drahtloses Multihop-Relaiskommunikationssystem und Systemdafür
    • EP1940049A1
    • 2008-07-02
    • EP06127342.1
    • 2006-12-29
    • Industrial Technology Research Institute
    • Lin, Shiang-JiunFu, I-KangPai, Cheng-KangSheen, Wen-Ho
    • H04B7/26
    • H04B7/2606H04B7/2656
    • A scheduling technique for wireless multihop relay communication systems is provided. With spatial separation caused by the shadowing effect of surrounding buildings, a base station and its relay stations in a single cell are divided into several groups by following the rule that stations with severe potential interference are separated into different groups. The base station arranges the scheduling of these groups and serves these groups sequentially in the time domain. To take advantage of shadow effect, the same radio resources can be scheduled for relay stations within the same group due to the isolation of interfering signals. In the present invention, base stations and relay stations are equipped with directional antennas or sector antennas to further exploit the advantage of spatial separations. Different relay groups can also reuse the radio resource through appropriate power control. The cell capacity can be enhanced substantially because of aggressive radio resource reuse.
    • 提供了一种用于无线多跳中继通信系统的调度技术。 由于周围建筑物的遮蔽效应引起的空间分离,基站和单个小区的中继站按照将严重潜在干扰的台站分成不同组的规则划分为几组。 基站安排这些组的调度,并在时域中依次提供这些组。 为了利用阴影效应,由于干扰信号的隔离,可以为同一组内的中继站调度相同的无线电资源。 在本发明中,基站和中继站配备有定向天线或扇区天线,以进一步利用空间分离的优点。 不同的中继组还可以通过适当的功率控制来重用无线电资源。 由于侵略性的无线电资源重用,电池容量可以大大提高。