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    • 1. 发明授权
    • Gate turn-off thyristor construction
    • 门极关断晶闸管结构
    • US4618781A
    • 1986-10-21
    • US246019
    • 1981-03-20
    • Dieter SilberFriedhelm SawitzkiKurt Roy
    • Dieter SilberFriedhelm SawitzkiKurt Roy
    • H01L29/74H01L29/744H03K17/60
    • H01L29/744H01L29/7408H01L29/7412
    • A gate turn-off thyristor comprising, a first emitter layer of one conductivity type, a main base layer of another conductivity type connected to said first emitter layer and a control base layer of the first conductivity type connected to the main base layer. A second emitter of the other conductivity type is connected to the control base layer at a junction which surrounds a portion of the second emitter layer. An emitter contact is connected to the second emitter layer and a control base contact is connected to the control base layer. The gate turn-off thyristor is turned off by a short circuiting of the control base contact with the emitter contact. The surface resistance of the control base layer between the second emitter layer and the control base contact is selected so that, with a control base turn-off current applied which is sufficient for turning off the thyristor, a potential appears on a lateral resistance in the control base layer which is less than a potential appearing at the junction. This difference in potential is used as an additional driving potential for the hole or electron current flowing over the lateral resistance and the control base layer.
    • 一种栅极截止晶闸管,包括:一个导电类型的第一发射极层,连接到所述第一发射极层的另一导电类型的主基极层和连接到主基极层的第一导电类型的控制基极层。 另一导电类型的第二发射极在围绕第二发射极层的一部分的结处连接到控制基极层。 发射极触点连接到第二发射极层,并且控制基极触点连接到控制基极层。 栅极关断晶闸管由于与发射极触点的控制基极接触短路而被关断。 选择第二发射极层和控制基极触点之间的控制基极层的表面电阻,使得施加足以关断晶闸管的控制基极截止电流,在侧向电阻中出现电位 控制基层小于出现在接合处的电位。 这种电位差被用作流过横向电阻和控制基极层的空穴或电子电流的附加驱动电位。
    • 4. 发明授权
    • Digital signal transmission
    • 数字信号传输
    • US4410878A
    • 1983-10-18
    • US201266
    • 1980-10-27
    • Ralf-Michael Stach
    • Ralf-Michael Stach
    • H04L1/00H03M5/16H04B10/50H04L25/49H03K13/24
    • H04L25/4923H04B10/504
    • In a method and apparatus for transmitting digital signals by means of signal generators by initially converting a double current pulse train, under control of bit clock pulses and before transmission, into a first unipolar pulse train composed of pulses corresponding to all positive transmission pulses and into a second unipolar pulse train composed of pulses corresponding to all negative transmission pulses, the pulse trains are code converted independently of the duration of the bit clock pulses for producing a converted signal having a first transmitting amplitude in correspondence with each pulse of the first pulse train and a second transmitting amplitude in correspondence with each pulse of the second pulse train, the second amplitude differing from the first, and the converted signal is applied to a signal generator for producing an output signal corresponding to the converted signal and in which the transmitting amplitudes corresponding to both unipolar pulse trains vary the output signal in the same polarity direction.
    • 在用于通过信号发生器发送数字信号的方法和装置中,通过在比特时钟脉冲和传输之前的初始转换双电流脉冲串到由对应于所有正传输脉冲的脉冲组成的第一单极脉冲串中, 由对应于所有负传输脉冲的脉冲组成的第二单极脉冲串,脉冲串被独立于比特时钟脉冲的持续时间进行编码转换,以产生与第一脉冲串的每个脉冲对应的具有第一发射幅度的转换信号 以及与第二脉冲序列的每个脉冲相对应的第二发射幅度,第二振幅不同于第一振幅,并且转换的信号被施加到信号发生器,用于产生对应于转换的信号的输出信号,并且其中发射振幅 对应于单极脉冲串,o变化 在相同的极性方向输出信号。
    • 5. 发明授权
    • Superheterodyne receiver frequency tracking circuit
    • 超外差接收机频率跟踪电路
    • US4384365A
    • 1983-05-17
    • US245603
    • 1981-03-19
    • Christopher W. MalinowskiHeinz Rinderle
    • Christopher W. MalinowskiHeinz Rinderle
    • G01R23/00G01R23/06H03J3/28H03J5/02H04B1/26
    • H03J3/28G01R23/005G01R23/06H03J5/0281
    • In a superheterodyne signal receiver including an input circuit arranged to be tuned to a frequency to be received and including a signal controllable variable reactance element presenting a reactance whose value is adjusted by a tuning signal and determines the frequency to which the input circuit is tuned, and a controllable local oscillator producing an alternating signal to be mixed with a received signal to produce an intermediate frequency received signal, a tracking circuit composed of: a first frequency control circuit including the local oscillator; a second frequency control circuit including a controllable sampling oscillator and a member connected to respond to the frequency of the output from the sampling oscillator to derive a signal related thereto and supplying that signal, as the tuning signal, to the controllable element; and a control signal generating unit generating first and second control signals and connected for supplying the first control signal to the first frequency control circuit for adjusting the frequency of the signal produced by the local oscillator, and for supplying the second control signal to the second frequency control circuit for adjusting the value of the tuning signal to tune the input circuit to a selected frequency, the generating unit maintaining a relationship between the first and second control signals such that the output frequency of the local oscillator is adjusted to the value corresponding to the received signal frequency to which the input circuit is tuned.
    • 在包括被调谐到待接收频率的输入电路的超外差信号接收机中,并包括呈现电抗的信号可控可变电抗元件,该电抗器的值由调谐信号调节并确定输入电路调谐的频率, 以及可控制的本地振荡器,产生与接收信号混合的交流信号以产生中频接收信号;跟踪电路,包括:包括本地振荡器的第一频率控制电路; 第二频率控制电路,包括可控采样振荡器和被连接以响应于来自采样振荡器的输出频率的部件,以导出与其相关的信号,并将该信号作为调谐信号提供给可控元件; 以及控制信号生成单元,其生成第一和第二控制信号并被连接用于将第一控制信号提供给第一频率控制电路,用于调整由本机振荡器产生的信号的频率,并将第二控制信号提供给第二频率 控制电路,用于调节调谐信号的值以将输入电路调谐到选定的频率,生成单元保持第一和第二控制信号之间的关系,使得本地振荡器的输出频率被调整到与 输入电路调谐到的接收信号频率。
    • 6. 发明授权
    • Method for transmitting data in a time multiplex transmission
    • 用于在时间复用传输中发送数据的方法
    • US4356484A
    • 1982-10-26
    • US176558
    • 1980-08-08
    • Gert Eckhardt
    • Gert Eckhardt
    • G08G1/123H04J3/24H04B1/00H04Q7/00H04Q9/00
    • G08G1/20H04J3/242H04J3/245
    • A method for transmitting data between at least one central office and a plurality of mobile radio stations via a relay station by a time multiplex transmission procedure in which signals are transmitted in a succession of time frames structure and the central office transmits on a first frequency to all mobile radio stations via the relay station, which method includes:causing the central office to periodically transmit different messages at arbitrarily selected times, which messages include routine inquiry messages directed to each mobile station in sequence during each time frame;causing each mobile station to respond to an inquiry message by transmitting a selected short message on a second frequency;causing a selected mobile station to transmit data to the central office by transmitting to the central office an announcement of the intent to transmit data during a first time frame, causing the central office to set aside reception capacity for the data in a time frame following the first time frame, and transmitting the data to the central office during the following time frame; andcausing the duration of each time frame to vary, on the basis of data transmitted during at least one preceding time frame, between a minimum value determined by the time required to transmit a routine inquiry to each mobile station and a maximum value determined by the time required to transmit data to and from all mobile stations.
    • 一种用于经由中继站在至少一个中心局和多个移动无线电站之间通过时间复用传输过程在一系列时间帧结构中发送信号并且中心局以第一频率传输数据的方法, 所有移动无线电站通过中继站,该方法包括:使中心局在任意选择的时间周期性地发送不同的消息,哪些消息包括在每个时间帧期间按顺序指向每个移动台的常规查询消息; 使每个移动台通过在第二频率上发送所选择的短消息来响应查询消息; 使所选择的移动台通过向中心局发送在第一时间帧期间发送数据的意图的通知向中心局发送数据,使得中心局在该时间段之后的时间框架内留出数据的接收容量 并在以下时间段内将数据发送到中心局; 并且基于在至少一个先前时间帧期间发送的数据,使每个时间帧的持续时间根据由每个移动站发送例行询问所需的时间确定的最小值和由 向所有移动台发送数据所需的时间。
    • 10. 发明授权
    • Four-port network for separating two signals comprised of doubly
polarized frequency bands
    • 用于分离由双极化频带组成的两个信号的四端口网络
    • US4344048A
    • 1982-08-10
    • US177449
    • 1980-08-11
    • Gunter Morz
    • Gunter Morz
    • H01P1/161H01P1/17H01P1/213
    • H01P1/161H01P1/172H01P1/2131
    • A four-port network for separating signals comprised of two doubly polarized frequency bands for an antenna feeder system in directional or satellite radio operation, wherein a first polarization converter for converting linear polarization to circular polarization, and vice versa, is designed for the lowest inherent ellipticity in the lower frequency band and is connected ahead of a symmetric polarization filter for the lower frequency band, and a second polarization converter which compensates the remaining ellipticity in the upper frequency band is connected between the symmetrical polarization filter and a further polarization filter for the upper frequency band. The second polarization converter for compensating the remaining ellipticity in the upper frequency band includes two different types of wavecoupling means with the first wavecoupling means reducing the frequency dependence of the remaining ellipticity but simultaneously increasing the amount of the remaining ellipticity and the other wavecoupling means having the resulting effect that the amount of the remaining ellipticity and additionally its frequency dependence are reduced to a minimum.
    • 一种用于在定向或卫星无线电操作中分离用于天线馈线系统的两个双极化频带的信号的四端口网络,其中用于将线性偏振转换为圆偏振的反相器的第一偏振转换器设计成用于最低固有的 在较低频带上的椭圆率,并且连接在用于较低频带的对称偏振滤波器之前,补偿上部频带中的剩余椭圆率的第二偏振转换器连接在对称偏振滤波器和另一个偏振滤波器之间,用于 高频段。 用于补偿上频带中的剩余椭圆率的第二偏振转换器包括两种不同类型的波耦合装置,其中第一波耦合装置降低剩余椭圆率的频率依赖性,同时增加剩余椭圆率的量,而另一波耦合装置具有 导致剩余椭圆度的量和另外其频率依赖性的量减小到最小。