公开(公告)号：US4330866A

公开(公告)日：1982-05-18

申请号：US143503

申请日：1980-04-24

Applicant: Max E. Malchow

Inventor： Max E. Malchow

IPC: H03G3/34 ,  H03J7/18

CPC classification number: H03G3/341 ,  H03J7/18

Abstract: An integrated circuit for processing the IF signal of a radio receiver to produce an audio signal also includes a muting circuit for muting the audio signal, detector circuits for generating a stop signal which, e.g., may be used to stop the operation of a scanning tuner when the IF signal has a predetermined condition, an inhibiting circuit for inhibiting the generation of the stop signal and a signal strength for generating positive-going and negative-going signals representing the amplitudes of an RF input signal. The integrated circuit also includes a comparator circuit having first and second input terminals to which the signal strength and stop pulse signals may be applied in a variety of configurations to determine when the RF signal has respective predetermined amplitude conditions and a signal routing circuit for selectively applying the output signal of the comparator circuit to the muting and stop pulse inhibiting circuits in different combinations to accommodate different operating environments of the receiver in response to the level of a routing control signal applied to a control terminal.

Abstract translation: 用于处理无线电接收机的IF信号以产生音频信号的集成电路还包括用于静音音频信号的静噪电路，用于产生停止信号的检测器电路，例如可用于停止扫描调谐器的操作 当IF信号具有预定条件时，禁止产生停止信号的抑制电路和用于产生表示RF输入信号幅度的正向和负向信号的信号强度。 集成电路还包括具有第一和第二输入端的比较器电路，信号强度和停止脉冲信号可以以各种配置施加到该比较器电路，以确定RF信号何时具有相应的预定幅度条件，以及用于选择性地施加的信号路由电路 响应于施加到控制终端的路由控制信号的电平，比较器电路的输出信号以不同组合的静噪和停止脉冲抑制电路来适应接收机的不同操作环境。

公开(公告)号：US4272726A

公开(公告)日：1981-06-09

申请号：US59469

申请日：1979-07-20

Applicant: Max E. Malchow

Inventor： Max E. Malchow

IPC: H03D3/14 ,  H03D3/26

CPC classification number: H03D3/26 ,  H03D3/14

Abstract: A balanced discriminator for frequency modulation systems particularly useful in integrated circuit applications. A source of FM signal having substantially zero source impedance drives a discriminator circuit-differential peak detector combination. The discriminator comprises first and second like capacitors connected between the FM source and first and second input connections to the differential peak detector respectively, an inductor connected between the input connections of the differential peak detector, and a third capacitor connected between said second input connection and a point of fixed potential.

Abstract translation: 用于频率调制系统的平衡鉴频器，在集成电路应用中特别有用。 具有基本上零源阻抗的FM信号源驱动鉴别器电路 - 差分峰值检测器组合。 鉴频器包括分别连接在FM源和分别与差分峰值检测器的第一和第二输入连接点之间的第一和第二类似电容器，连接在差分峰值检测器的输入连接之间的电感器和连接在所述第二输入连接和 一个固定的潜力点。

公开(公告)号：US4370520A

公开(公告)日：1983-01-25

申请号：US266984

申请日：1981-05-26

Applicant: Max E. Malchow

Inventor： Max E. Malchow

IPC: G01R15/09 ,  G01R23/15 ,  H04H1/00 ,  H04H20/49 ,  H04B1/12 ,  H04H5/00

CPC classification number: H04H20/49 ,  G01R15/09 ,  G01R23/15

Abstract: An AM stereo receiver includes an AGC system with first and second AGC system characteristics. The first AGC system characteristic provides a relatively constant receiver output signal for increasing received signal strength, i.e., a hard AGC characteristic. The second AGC characteristic provides a somewhat increasing receiver output signal for increasing received signal strength, i.e., a soft AGC system characteristic. A tuning detector is used to detect when the receiver is being tuned. When the receiver is being tuned, the AGC system is conditioned to provide a relatively soft AGC characteristic, which facilitates accurate receiver tuning. When the receiver is not being tuned, the AGC system is conditioned to provide a relatively hard AGC characteristic, which facilitates accurate left and right stereo channel separation.

Abstract translation: AM立体声接收机包括具有第一和第二AGC系统特性的AGC系统。 第一AGC系统特性提供了相对恒定的接收机输出信号，用于增加接收信号强度，即硬AGC特性。 第二AGC特征提供了稍微增加的接收机输出信号，用于增加接收信号强度，即软AGC系统特性。 调谐检测器用于检测接收机何时被调谐。 当接收机正在调谐时，AGC系统被调节以提供相对软的AGC特性，这有助于精确的接收器调谐。 当接收机未被调谐时，AGC系统被调节以提供相对较硬的AGC特征，这有助于精确的左右立体声声道分离。

公开(公告)号：US4322691A

公开(公告)日：1982-03-30

申请号：US143346

申请日：1980-04-24

Applicant: Max E. Malchow

Inventor： Max E. Malchow

IPC: H03F3/343 ,  H03F3/26

CPC classification number: H03F3/343

Abstract: The circuitry comprises a source of input signal current, a common-base transistor amplifier or its equivalent supplying a first load means from its output connection, a first resistive means connected at its first end to the source of input signal current and at its second end to the input connection of the common-base transistor amplifier or its equivalent, a voltage follower with input connection from the first end of the first resistive means, a current mirror amplifier supplying a second load means from its output connection, and a second resistive means connected at its first end to the output connection of said voltage follower and connected at its second end to the input connection of the current mirror amplifier.

Abstract translation: 该电路包括输入信号电流源，共基极晶体管放大器或其等效端从其输出连接端提供第一负载装置，第一电阻装置在其第一端连接到输入信号电流源，并在其第二端 涉及共基晶体管放大器或其等效物的输入连接，具有来自第一电阻装置的第一端的输入连接的电压跟随器，从其输出连接器提供第二负载装置的电流镜放大器和第二电阻装置 在其第一端连接到所述电压跟随器的输出连接并在其第二端连接到电流镜放大器的输入连接。

公开(公告)号：US4385400A

公开(公告)日：1983-05-24

申请号：US143347

申请日：1980-04-24

Applicant: Max E. Malchow

Inventor： Max E. Malchow

IPC: H03G3/30 ,  H03G3/20 ,  H04B1/26

CPC classification number: H03G3/3052

Abstract: In an FM receiver including a plurality of cascaded amplifier stages for successively amplifying an IF signal to form a pulse signal which is demodulated to derive an audio signal, an auxiliary amplifier section beside the cascade is provided to amplify a signal developed at an intermediate point in the cascade to form a signal from which a control signal for controlling the gain of an RF amplifier. The auxiliary amplifier section includes a first linear amplifier including degenerative signal feedback followed in cascade by a second linear amplifier including a gain control arrangement. The latter is responsive to a logarithmic gain control signal generated by a logarithmic amplifier in response to the output signal of a peak detector following the auxiliary amplifier. The control signal has a relatively wide control range, e.g., 10 to 500 microvolts of RF input signal, suitable for controlling the gain of an RF stage.

Abstract translation: 在包括多个级联放大器级的FM接收机中，用于连续放大IF信号以形成被解调以导出音频信号的脉冲信号，提供级联旁边的辅助放大器部分，以放大在中间点处产生的信号 级联以形成用于控制RF放大器的增益的控制信号的信号。 辅助放大器部分包括第一线性放大器，其包括由包括增益控制装置的第二线性放大器级联的退化信号反馈。 后者响应于对数放大器响应于辅助放大器之后的峰值检测器的输出信号产生的对数增益控制信号。 控制信号具有相对较宽的控制范围，例如10至500微伏的RF输入信号，适用于控制RF级的增益。

公开(公告)号：US4327332A

公开(公告)日：1982-04-27

申请号：US117079

申请日：1980-01-31

Applicant: Max E. Malchow

Inventor： Max E. Malchow

IPC: H03F3/343 ,  H03F1/30 ,  H03F3/195 ,  H03F3/34 ,  H03F3/347 ,  H03F3/45

CPC classification number: H03F1/302 ,  H03F3/195

Abstract: In an integrated circuit structure including IF amplifier stages coupled in cascade by d-c blocking capacitors to restrict the noise bandwidth of an FM receiver in which it is employed and receiving power from a common power supply line, separate operating voltage generating circuits are provided for each amplifier stage to inhibit undesired oscillations. Each voltage generating circuit is decoupled from the power supply line by a respective lateral transistor configuration cooperative with a current mirror amplifier arrangement to supply a reference current to the voltage generating circuit.

Abstract translation: 在包括由直流阻塞电容器串联耦合的IF放大器级以限制其中使用的FM接收机的噪声带宽并从公共电源线接收功率的集成电路结构中，为每个放大器提供单独的工作电压发生电路 以抑制不需要的振荡。 每个电压产生电路通过与电流镜放大器装置协调的相应横向晶体管配置与电源线解耦，以将电压提供给电压产生电路。

公开(公告)号：US4334198A

公开(公告)日：1982-06-08

申请号：US143504

申请日：1980-04-24

Applicant: Max E. Malchow

Inventor： Max E. Malchow

IPC: H03F1/30 ,  H03F3/343 ,  H03F3/04

CPC classification number: H03F3/343 ,  H03F1/302

Abstract: A common-collector-amplifier transistor is followed in direct-coupled cascade connection by a common-emitter amplifier transistor. A multiple-V.sub.BE supply biases the base of the common-collector-amplifier transistor respective to the emitter of the common-emitter amplifier, so the quiescent collector current of the common-emitter-amplifier transistor can be accurately defined. To improve the high-frequency response of the common-collector amplifier transistor, while preserving the capability of accurately defining the quiescent collector current of the common-emitter-amplifier transistor, the emitter of the common-collector amplifier transistor is supplied bias current from the collector of a constant-current-generator transistor having its emitter-to-base voltage related to that of one of the transistors in the multiple-V.sub.BE supply.

Abstract translation: 通过共发射极放大器晶体管在直接耦合级联中遵循公共集电极放大器晶体管。 多VBE电源偏置共发射极放大器晶体管的基极，共同发射极放大器的发射极，因此可以准确地定义共发射极 - 放大器晶体管的静态集电极电流。 为了提高公共集电极放大器晶体管的高频响应，同时保持精确定义共发射极 - 放大器晶体管的静态集电极电流的能力，共集电极放大器晶体管的发射极被提供来自 具有与多VBE电源中的晶体管之一相关的发射极到基极电压的恒流发生器晶体管的集电极。

公开(公告)号：US4295088A

公开(公告)日：1981-10-13

申请号：US113372

申请日：1980-01-18

Applicant: Max E. Malchow

Inventor： Max E. Malchow

IPC: H01L27/06 ,  H03G3/30 ,  H04R25/00 ,  G05F3/20

CPC classification number: H03G3/3063 ,  H01L27/0652 ,  H04R25/00 ,  Y10S323/907

Abstract: A temperature-sensitive voltage divider for monolithic i.c.'s using singly and doubly diffused resistors avoids the problems with tracking their resistance characteristics owing to diffusion process variations. This is done by using the pinch resistor in conjunction with the base-emitter circuit of a bipolar transistor arranged in common-collector amplifier configuration. The impedance transformation properties of the transistor ease the problems of scaling otherwise encountered in many potential divider arrangements of supply and doubly diffused resistors. The utility of the voltage divider is illustrated in the shunt regulation of the operating voltage of an AM radio receiver.

Abstract translation: 用于单片式i.c.使用单和双扩散电阻的温度敏感分压器避免了由于扩散过程变化而跟踪其电阻特性的问题。 这是通过使用夹持电阻器与以共集电极放大器配置布置的双极晶体管的基极 - 发射极电路结合来完成的。 晶体管的阻抗变换特性可以缓解电源和双扩散电阻器的许多分压器布置中另外遇到的缩放问题。 在AM无线电接收机的工作电压的分流调节中示出了分压器的用途。

公开(公告)号：US4253196A

公开(公告)日：1981-02-24

申请号：US112173

申请日：1980-01-15

Applicant: Max E. Malchow

Inventor： Max E. Malchow

IPC: H03D7/12 ,  H04B1/28

CPC classification number: H03D7/12

Abstract: A frequency converter including a first pair of transistors with an interconnection between their emitters for receiving a unidirectional current with signal variations to be converted, at least one of their collectors arranged to supply converted signal currents. A second pair of transistors with an interconnection between their emitter electrodes connected by resistor to reference potential is connected to regenerate oscillations in a tank circuit. One of these transistors has its collector connected to the tank circuit; the other has its base connected to receive scaled-down oscillations from the tank circuit and has its collector provided with a resistive load to develop switching signal to be applied between the base electrodes of the first pair of transistors. Appropriate scaling of the resistive load to the emitter resistor shared by second pair of transistors results in maximum conversion efficiency.

Abstract translation: 一种频率转换器，包括第一对晶体管，其发射极之间具有互连，用于接收具有待转换的信号变化的单向电流，其集电器中的至少一个被布置成提供转换的信号电流。 连接第二对晶体管，它们通过电阻与参考电位相连的发射极之间的互连连接，从而再生振荡电路中的振荡。 其中一个晶体管的集电极连接到储能电路; 另一个具有其基极连接以从储能电路接收按比例缩小的振荡，并且其集电极设置有电阻负载以开发施加在第一对晶体管的基极之间的开关信号。 对第二对晶体管共享的发射极电阻的电阻负载的适当缩放导致最大的转换效率。

公开(公告)号：US4249137A

公开(公告)日：1981-02-03

申请号：US968443

申请日：1978-12-11

Applicant: Max E. Malchow

Inventor： Max E. Malchow

IPC: H03G3/30 ,  H04R25/00

CPC classification number: H03G3/3063 ,  H04R25/356

Abstract: A common-emitter-amplifier transistor with tuned collector circuit has its gain controlled by the variation of an emitter degeneration resistance responsive to an automatic gain control voltage. This emitter degeneration resistance is provided by the collector-to-emitter path of a gain-controlling transistor having relatively large emitter-base junction area and receiving the automatic gain control voltage at its base electrode. The amplifier transistor is provided temperature compensated base biasing so its emitter-follower action maintains its emitter electrode at a voltage, which applied as the emitter-to-collector voltage of the gain controlling transistor conditions the gain controlling transistor to operate in saturation. Under strong signal conditions the increase in emitter degeneration resistance reduces the severity of cross-modulation and inter-modulation effects. The disclosure describes an AM radio receiver using this type of automatic gain control for its r-f and i-f amplifier stages. Circuitry for avoiding overload distortion in the r-f amplifier is also described.

Abstract translation: 具有调谐集电极电路的共发射极 - 放大器晶体管的增益由响应于自动增益控制电压的发射极退化电阻的变化控制。 该发射极退化电阻由具有相对较大的发射极 - 基极结面积的增益控制晶体管的集电极到发射极路径提供，并且在其基极处接收自动增益控制电压。 放大器晶体管提供温度补偿基极偏置，因此其发射极跟随器动作将其发射极电极维持在电压上，该电压作为增益控制晶体管的发射极到集电极电压施加，使增益控制晶体管工作在饱和状态。 在强信号条件下，发射极退化电阻的增加降低了交叉调制和互调效应的严重性。 本公开描述了对其r-f和i-f放大器级使用这种类型的自动增益控制的AM无线电接收机。 还描述了用于避免r-f放大器中的过载失真的电路。