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1. 发明公开

EP0580320A1 High performance oscillator with low frequency pulling at turn on 失效
标题翻译：振荡器高性能，在启动过程中夹带低频率。
公开(公告)号：EP0580320A1
公开(公告)日：1994-01-26
申请号：EP93305328.2
申请日：1993-07-07
申请人： Hughes Aircraft Company
发明人： Estrick, Vaughn H. , Safford, John P.
IPC分类号： H03B5/36
CPC分类号： H03B5/36 , H03B2200/0034
摘要： A high performance oscillator with low frequency pulling at turn on includes an oscillator transistor (12), a resonating element (34) and a common base buffer transistor (38). The resonating element of the oscillator is a circuit having a crystal oscillator (30) that is connected in parallel with a transformer winding. This resonating element is connected between the emitter (18) of the oscillator transistor and the emitter (40) of the buffer transistor. More specifically, a tap connects the emitter of the buffer transistor to the transformer winding of the resonating element. With this connection, a low transformed power oscillating output is taken from the collector (48) of the buffer transistor with minimized degradation in the symbol of merit for the crystal oscillator.
摘要翻译：与低频在导通晶体管拉动高性能振荡器包括在振荡器（12），谐振元件（34）和一个共基极缓冲晶体管（38）。振荡器的谐振元件是没有被并联连接的变压器绕组具有晶体振荡器（30）的电路。这个谐振元件被连接在振荡器晶体管的发射极（18）和缓冲晶体管的发射极（40）之间。更具体地，抽头缓冲晶体管的发射极连接到变压器绕组的谐振元件的。与此相关，低功率转化振荡输出从与优点的用于晶体振荡器的符号最小化降解的缓冲晶体管的集电极（48）截取。

2. 发明公开

EP0508671A2 MMIC amplifier with extended dynamic range 失效
标题翻译： MMIC-Verstärkermit erweitertem Dynamikbereich。
公开(公告)号：EP0508671A2
公开(公告)日：1992-10-14
申请号：EP92302862.5
申请日：1992-04-01
申请人： Hughes Aircraft Company
发明人： Siddoway, Ronald T. , Estrick, Vaughn H.
IPC分类号： H03F3/16 , G01S7/02 , G01S7/66 , H03G7/06 , H03F3/345
CPC分类号： H03F1/3229 , G01S7/03
摘要： A Monolithic Microwave Integrated Circuit (MMIC) amplifier (10) with extended dynamic range includes a base circuit (12) for receiving both a first input signal, which is the signal to be amplified, and an amplifier generated second input signal. A power amplifier (14) in the base circuit (12) directly receives and amplifies the first input signal, with some unavoidable distortion to the first input signal. A first directional coupler (18) is connected with the base circuit (12) to couple the output of the power amplifier (14) with the first input signal to cancel the first input signal component from the output of the power amplifier and generate the second input signal which is only distortion. This distortion is then amplified by an error amplifier (16) in the base circuit (12), and the output of the error amplifier (16) is coupled with the output of the power amplifier (14) through a second directional coupler (20). This coupling at the second directional coupler (20) cancels the distortion from the output of the power amplifier to provide the desired amplified signal.
摘要翻译：具有扩展动态范围的单片微波集成电路（MMIC）放大器（10）包括用于接收作为要被放大的信号的第一输入信号和放大器产生的第二输入信号的基本电路（12）。基极电路（12）中的功率放大器（14）直接接收并放大第一输入信号，并对第一输入信号产生一些不可避免的失真。第一定向耦合器（18）与基极（12）连接，以将功率放大器（14）的输出与第一输入信号耦合，以从功率放大器的输出中消除第一输入信号分量，并产生第二定向耦合器输入信号只有失真。然后，该失真被基极（12）中的误差放大器（16）放大，并且误差放大器（16）的输出通过第二定向耦合器（20）与功率放大器（14）的输出耦合，。第二定向耦合器（20）处的该耦合消除了功率放大器输出端的失真，以提供所需的放大信号。

3. 发明授权

EP0557800B1 Receiver distortion correction circuit 失效
标题翻译：电路，用于失真的在接收器的校正
公开(公告)号：EP0557800B1
公开(公告)日：1997-12-17
申请号：EP93102069.7
申请日：1993-02-10
申请人： Hughes Aircraft Company
发明人： Estrick, Vaughn H. , Siddoway, Ronald T.
IPC分类号： H04B1/12
CPC分类号： H04B1/123 , H04B17/20

4. 发明公开

EP0557800A1 Receiver distortion correction circuit and method 失效
标题翻译： Emperton的Schaltkreis und Verfahren zur Korrektur von Verzerrungen。
公开(公告)号：EP0557800A1
公开(公告)日：1993-09-01
申请号：EP93102069.7
申请日：1993-02-10
申请人： Hughes Aircraft Company
发明人： Estrick, Vaughn H. , Siddoway, Ronald T.
IPC分类号： H04B1/12
CPC分类号： H04B1/123 , H04B17/20
摘要： A distortion correction circuit (100) having a mechanism (134) for intercepting a distorted output signal from a receiver (114) and for generating an Nth order signal. A circuit (140) is provided to subtract the Nth order signal from the distorted output signal for providing a circuit output signal. Finally, a feedback loop (106) is provided to feed back the circuit output signal for controlling the Nth order signal and for providing a distortion corrected circuit output signal. In a preferred embodiment, the distortion correction circuit (200) includes a calibration circuit (220) which provides a calibration signal employed to linearize a receiver channel (102). The receiver channel (102) includes a plurality of receiver stages (214) which receive the calibration signal and provide the distorted output signal which is intercepted and directed to a cubing circuit (208). The cubing circuit (208) generates an error correction signal controlled by the feedback loop (206) to cancel the distortion component of the distorted output signal. In the preferred embodiment, the feedback loop (206) controls the amplitude and phase of the error correction signal while in another illustrative embodiment, only the amplitude of the error correction signal is controlled. Thus, the invention discloses a correction circuit arrangement for a receiver channel (102) which provides a distortion corrected output signal by effectively removing the distortion generated by the receiver (214).
摘要翻译：一种失真校正电路（100），具有用于截取来自接收机（114）的失真输出信号并产生N阶信号的机构（134）。提供电路（140）以从失真的输出信号中减去N阶信号以提供电路输出信号。最后，提供反馈回路（106）以反馈电路输出信号以控制第N阶信号并提供失真校正的电路输出信号。在优选实施例中，失真校正电路（200）包括校准电路（220），其提供用于线性化接收器通道（102）的校准信号。接收器通道（102）包括多个接收器级（214），其接收校准信号并提供被截获并被引导到立方电路（208）的失真输出信号。立方体电路（208）产生由反馈回路（206）控制的纠错信号，以消除失真输出信号的失真分量。在优选实施例中，反馈回路（206）控制误差校正信号的幅度和相位，而在另一说明性实施例中，仅控制纠错信号的振幅。因此，本发明公开了一种用于接收机通道（102）的校正电路装置，其通过有效地去除由接收器（214）产生的失真来提供失真校正的输出信号。

5. 发明公开

EP0508671A3 MMIC amplifier with extended dynamic range 失效
标题翻译：带扩展动态范围的MMIC放大器
公开(公告)号：EP0508671A3
公开(公告)日：1993-03-17
申请号：EP92302862.5
申请日：1992-04-01
申请人： Hughes Aircraft Company
发明人： Siddoway, Ronald T. , Estrick, Vaughn H.
IPC分类号： H03F3/16 , G01S7/02 , G01S7/66 , H03G7/06 , H03F3/345
CPC分类号： H03F1/3229 , G01S7/03
摘要： A Monolithic Microwave Integrated Circuit (MMIC) amplifier (10) with extended dynamic range includes a base circuit (12) for receiving both a first input signal, which is the signal to be amplified, and an amplifier generated second input signal. A power amplifier (14) in the base circuit (12) directly receives and amplifies the first input signal, with some unavoidable distortion to the first input signal. A first directional coupler (18) is connected with the base circuit (12) to couple the output of the power amplifier (14) with the first input signal to cancel the first input signal component from the output of the power amplifier and generate the second input signal which is only distortion. This distortion is then amplified by an error amplifier (16) in the base circuit (12), and the output of the error amplifier (16) is coupled with the output of the power amplifier (14) through a second directional coupler (20). This coupling at the second directional coupler (20) cancels the distortion from the output of the power amplifier to provide the desired amplified signal.

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