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    • 2. 发明授权
    • Apparatus for determining range and bearing
    • 用于确定范围和方位的装置
    • US4604733A
    • 1986-08-05
    • US567592
    • 1984-01-03
    • Billy F. BrownKenneth J. Petrosky
    • Billy F. BrownKenneth J. Petrosky
    • G01S15/74G01S15/42
    • G01S15/74
    • Apparatus which provides both range and bearing information between a transponder and a transponder interrogator. The interrogator transmits an acoustic interrogating pulse which is received by the transponder and in response thereto transmits back a first signal of a certain frequency f1. Two spaced apart hydrophones on the transponder provide their respective output signals to a phase meter, the output signal of which is indicative of the direction, that is, bearing, from which the interrogating pulse impinged. The phase meter output is converted to a corresponding time delay after which a second signal of a frequency f2 is transmitted. A counter in the interrogator starts counting upon transmission of the interrogating pulse and stops upon reception of the first signal of frequency f1. A second counter of the interrogator starts its count when the first counter turns off and terminates its count when the second signal f2 is received. The count in the first counter is converted to a corresponding range display and the count in the second counter is converted to a corresponding bearing display.
    • 在应答器和应答器询问器之间提供范围和方位信息的装置。 询问器发送由发送应答器接收的响应询问脉冲,并响应于此发送回一定频率f1的第一信号。 应答器上的两个间隔开的水听器将相应的输出信号提供给相位计,其相位计的输出信号指示询问脉冲从该方向发射的方向,即轴承。 相位计输出被转换成对应的时间延迟,之后发送频率为f2的第二信号。 询问器中的计数器在发送询问脉冲时开始计数,并且在接收到频率f1的第一信号时停止。 当第一计数器关闭时,询问器的第二计数器开始计数,并且当接收到第二信号f2时终止其计数。 将第一个计数器的计数转换为相应的范围显示,并将第二个计数器中的计数转换为相应的轴承显示。
    • 6. 发明授权
    • CCD Signal processor
    • CCD信号处理器
    • US4253168A
    • 1981-02-24
    • US953810
    • 1978-10-23
    • Kenneth J. PetroskyMarvin H. White
    • Kenneth J. PetroskyMarvin H. White
    • G10K11/34H01L27/105H03H15/02H03H7/20G01S3/80
    • H03H15/02G10K11/345H01L27/1057
    • Apparatus for forming one or more sonar beams in response to acoustic energy received by a transducer array. To minimize volume utilization, a plurality of CCD's are formed on an integrated circuit chip with the CCD's being of progressively smaller length. Half of the CCD array is folded over to match the other half so that each CCD has an opposing CCD with both CCD's propagating a signal toward a common output diode. By providing one integrated circuit chip for each desired beam with appropriately different clocking frequencies multiple beams may be formed, and with the provision of a variable clocking frequency, one or more beams may be steered.Transversal filter operations may also be performed by the apparatus.
    • 用于响应于由换能器阵列接收的声能形成一个或多个声纳束的装置。 为了最小化体积利用率,在集成电路芯片上形成多个CCD,CCD的长度逐渐变小。 CCD阵列的一半被折叠以匹配另一半,使得每个CCD具有相对的CCD,两个CCD将信号传播到公共输出二极管。 通过为每个期望的波束提供具有适当不同的时钟频率的一个集成电路芯片,可以形成多个波束,并且通过提供可变的时钟频率,可以控制一个或多个波束。 横向滤波器操作也可以由该装置执行。
    • 7. 发明授权
    • Power saturation control of class C bipolar amplifiers
    • C类双极型放大器的功率饱和控制
    • US06535067B1
    • 2003-03-18
    • US09952400
    • 2001-09-14
    • Kenneth J. Petrosky
    • Kenneth J. Petrosky
    • H03G310
    • H03F3/20H03F1/30H03F3/343H03G3/3042
    • A Class C bipolar transistor amplifier including circuit means having a non-linear, high-current, low-knee voltage transfer characteristic in series with the emitter RF choke of a common base bipolar transistor, which increases the emitter bias voltage, and in turn forces the amplifier deeper into Class C operation during overdrive, effectively limiting the output power. In one embodiment, a low ohmic resistor and a MOSFET device are connected in series with the emitter RF choke of a common base bipolar transistor Class C amplifier. An active feedback control loop implemented with conventional operational amplifier (OP AMP) circuitry controls the MOSFET device so as to operate in the knee region of its current-voltage characteristic during power overdrive. In a second embodiment, a single non-linear circuit element such as a constant current diode having a high-current, low-knee voltage transfer characteristic is connected in series with the emitter RF choke. The constant current diode consists of a depletion mode MOSFET or JFET having the gate directly connected to the drain.
    • C类双极晶体管放大器包括具有与公共基极双极晶体管的发射极RF扼流圈串联的非线性,高电流,低拐点电压传递特性的电路装置,其增加了发射极偏置电压,反过来又 放大器在过驱动期间更深入C类操作,有效地限制了输出功率。 在一个实施例中,低欧姆电阻器和MOSFET器件与公共基极双极晶体管C类放大器的发射极RF扼流圈串联连接。 用常规运算放大器(OP AMP)电路实现的主动反馈控制回路控制MOSFET器件,以便在电源过驱动期间在其电流 - 电压特性的拐点区域中工作。 在第二实施例中,诸如具有大电流,低拐点电压传递特性的恒流二极管的单个非线性电路元件与发射极RF扼流圈串联连接。 恒流二极管由耗尽型MOSFET或JFET组成,栅极直接连接到漏极。