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1. 发明授权

US5543742A Phase shifting circuit 失效
标题翻译：移相电路
公开(公告)号：US5543742A
公开(公告)日：1996-08-06
申请号：US305877
申请日：1994-09-15
申请人： Isoshi Takeda , Yoshikazu Shimada
发明人： Isoshi Takeda , Yoshikazu Shimada
IPC分类号： H03B5/12 , H03D3/06 , H03K3/0231 , H03K3/282 , H04B1/16 , H03K3/00
CPC分类号： H03K3/0231 , H03K3/2821
摘要： A phase shifting circuit has an oscillation circuit. The oscillation circuit is provided with a charging and discharging capacitor at which the oscillation signal is generated. The oscillation signal has a constant level period and a saw tooth wave period. A valve of current flowing through the capacitor is changed in the middle of the saw tooth wave period by an input signal. An output of the phase shifting circuit is phase-shifted by 90.degree. with respect to the input signal.
摘要翻译：移相电路具有振荡电路。振荡电路设置有产生振荡信号的充放电电容器。振荡信号具有恒定电平周期和锯齿波周期。流过电容器的电流阀通过输入信号在锯齿波周期的中间改变。移相电路的输出相对于输入信号相移90°。

2. 发明授权

US5712601A Oscillation circuit 失效
标题翻译：振荡电路
公开(公告)号：US5712601A
公开(公告)日：1998-01-27
申请号：US603869
申请日：1996-02-22
申请人： Yoshikazu Shimada , Isoshi Takeda
发明人： Yoshikazu Shimada , Isoshi Takeda
IPC分类号： H03B5/20 , H03B1/00 , H03B5/12 , H03B5/24
CPC分类号： H03B5/24 , H03B2201/0291
摘要： An oscillation circuit is provided which is easily adjusted with a high degree of accuracy. The oscillation circuit including a filter having a time constant and an inverting amplifier which feeds back the output of the filter to the input side of the filter so that an oscillation condition is fulfilled. The filter includes a gm amplifier formed of a differential amplifier, and a capacitor. The constant current source of the differential amplifier is connected to a free running oscillation frequency adjusting circuit. The adjusting circuit includes a microcomputer, a decoder which decodes the output data of the microcomputer and a switching circuit driven by the output of the decoder and varying the current value according to the output of the decoder. A current in accordance with a current value depending on the setting of the switch flows through the constant current source.
摘要翻译：提供了可以高精度地容易地调节的振荡电路。该振荡电路包括具有时间常数的滤波器和反相放大器，其将滤波器的输出反馈到滤波器的输入侧，使得满足振荡条件。滤波器包括由差分放大器和电容器组成的gm放大器。差分放大器的恒流源连接到自由振荡频率调节电路。调整电路包括：微型计算机，对微型计算机的输出数据进行解码的解码器和由解码器的输出驱动的切换电路，并根据解码器的输出改变电流值。根据当前值取决于开关的设置的电流流过恒流源。

3. 发明授权

US5604808A FM signal processor 失效
标题翻译： FM信号处理器
公开(公告)号：US5604808A
公开(公告)日：1997-02-18
申请号：US338771
申请日：1994-11-10
申请人： Isoshi Takeda , Yoshikazu Shimada
发明人： Isoshi Takeda , Yoshikazu Shimada
IPC分类号： H03B5/20 , H03D3/06 , H03H11/16 , H04B1/16 , H04B1/26 , H04H5/00
CPC分类号： H04B1/1646 , H03D3/06
摘要： An FM signal phase-shifted by 90.degree. and an FM signal not phase-shifted are supplied to a multiplier to demodulate a stereo composite signal. A 90.degree. phase shifting circuit has a first oscillation circuit whose phase shift amount varies according to a timing at which the amount of a current flowing through a charging and discharging capacitor is changed. A multiplexer is provided to process the stereo composite signal to output left and right channel signals. The multiplexer has a second oscillation circuit for generating a signal multiplied by the stereo composite signal to extract the left and right channel signals from the composite signal. The first and second oscillation circuits each have a differential amplifier. The constant current of the constant current source of each differential amplifier is set by trimming-regulate it by a regulating circuit.
摘要翻译：相移90°的FM信号和不相移的FM信号被提供给乘法器以解调立体声复合信号。 90°移相电路具有第一振荡电路，其相移量根据流经充电和放电电容器的电流量改变的时刻而变化。提供多路复用器来处理立体声复合信号以输出左声道和右声道信号。复用器具有第二振荡电路，用于产生乘以立体声合成信号的信号，从复合信号中提取左右声道信号。第一和第二振荡电路各自具有差分放大器。每个差分放大器的恒流源的恒定电流通过调节电路进行调整来设定。

4. 发明授权

US06489669B2 Integrated circuit device 失效
标题翻译：集成电路器件
公开(公告)号：US06489669B2
公开(公告)日：2002-12-03
申请号：US09938498
申请日：2001-08-27
申请人： Yoshikazu Shimada , Hiroo Mochida
发明人： Yoshikazu Shimada , Hiroo Mochida
IPC分类号： H01L2302
CPC分类号： H01L25/0657 , H01L23/13 , H01L23/552 , H01L24/45 , H01L24/48 , H01L2224/16145 , H01L2224/45144 , H01L2224/48091 , H01L2224/48464 , H01L2225/06513 , H01L2225/06517 , H01L2225/06527 , H01L2924/00014 , H01L2924/01013 , H01L2924/01029 , H01L2924/01079 , H01L2924/14 , H01L2924/15153 , H01L2924/1517 , H01L2924/16152 , H01L2924/30107 , H01L2924/3025 , H01L2224/0401 , H01L2224/45015 , H01L2924/207
摘要： An integrated circuit device as a first IC chip, a second IC chip, and a circuit board having a hole formed therein that is large enough to permit the second IC chip to be accommodated therein. The first and second IC chips are bonded together so as to be electrically connected together, and the first IC chip is mounted on the circuit board with the second IC chip accommodated in the hole formed in the circuit board. Here, one of the IC chips forming a chip-on-chip structure is accommodated in the hole formed in the circuit board, making further thickness reduction possible. Moreover, the obverse surfaces of the IC chips are located closer to the circuit board, making possible wireless mounting of the IC chips, despite forming a chip-on-chip structure, on the circuit board through connection using bumps. This helps reduce trouble due to inductance in a circuit that handles a high-frequency signal.
摘要翻译：作为第一IC芯片的集成电路器件，第二IC芯片和在其中形成有足够大以允许第二IC芯片容纳在其中的孔的电路板。将第一和第二IC芯片接合在一起以电连接在一起，并且第一IC芯片安装在电路板上，第二IC芯片容纳在电路板中形成的孔中。这里，形成片上芯片结构的IC芯片之一被容纳在形成在电路板中的孔中，从而可以进一步减小厚度。此外，IC芯片的正面靠近电路板，尽管通过使用凸块的连接在电路板上形成片上芯片结构，也可以无线地安装IC芯片。这有助于减少处理高频信号的电路中的电感引起的故障。

5. 发明授权

US5548829A PLL circuit having a low-pass passive filter coupled to a varactor diode 失效
标题翻译： PLL电路具有耦合到变容二极管的低通无源滤波器
公开(公告)号：US5548829A
公开(公告)日：1996-08-20
申请号：US350039
申请日：1994-11-29
申请人： Tamotsu Suzuki , Yoshikazu Shimada
发明人： Tamotsu Suzuki , Yoshikazu Shimada
IPC分类号： H03J1/00 , H03L7/089 , H03L7/093 , H03L7/107 , H03L7/183 , H04B1/06
CPC分类号： H03J1/005 , H03L7/0891 , H03L7/107 , H03L7/093 , H03L7/183
摘要： A low-pass passive filter is inserted in the phase locked loop of a voltage-controlled oscillating circuit having a varactor diode. The filter has a first resistor, a capacitor and a second resistor connected in that order and the blocking characteristics of the filter are changed in accordance with a selected value of the second resistor. A push-pull output circuit in which the upstream transistor is connected directly to the supply voltage line receives the signal from a phase comparator circuit (which is indicative of the result of phase comparison) and outputs it to the low-pass passive filter. The low-pass passive filter controls the terminal voltage of the varactor diode in accordance with the terminal voltage of the capacitor and the value of the second resistor is selected depending on the desired blocking characteristics of the filter.
摘要翻译：在具有变容二极管的压控振荡电路的锁相环中插入低通无源滤波器。滤波器具有按照该顺序连接的第一电阻器，电容器和第二电阻器，并且滤波器的阻塞特性根据第二电阻器的选定值而改变。其中上游晶体管直接连接到电源电压线的推挽输出电路接收来自相位比较器电路的信号（其表示相位比较的结果），并将其输出到低通无源滤波器。低通无源滤波器根据电容器的端子电压来控制变容二极管的端子电压，并且根据滤波器的期望的阻塞特性来选择第二电阻器的值。

6. 发明授权

US07308241B2 Receiver system 有权
公开(公告)号：US07308241B2
公开(公告)日：2007-12-11
申请号：US11488768
申请日：2006-07-19
申请人： Yoshikazu Shimada , Hiroyuki Ashida
发明人： Yoshikazu Shimada , Hiroyuki Ashida
IPC分类号： H04B1/00 , H04B1/16
CPC分类号： H04B1/12 , H04B1/1036
摘要： A conventional receiver system has a filter circuit with unsatisfactory gain characteristics, and thus does not offer satisfactory reception performance. A receiver system of the invention has a filter circuit employing an equivalent inductor circuit including a capacitor, a gyrator composed of a plurality of operational transconductance amplifiers and having the capacitor as a load, and a resistor connected in series with the capacitor. A conventional receiver system has a band-pass filter circuit with a low third-order input intercept point, and thus does not offer satisfactory reception performance. The receiver system of the invention has, in the stage following a mixer, a band-pass filter circuit composed of a low-pass filter and a band-pass filter receiving the output signal of the low-pass filter, wherein the value obtained by dividing the higher cutoff frequency of the band-pass filter by the lower cutoff frequency thereof is smaller than 2, the center frequency of the band-pass filter is within a range of from about 1 to 3 MHz, and the cutoff frequency of the low-pass filter is higher than the center frequency of the band-pass filter.

7. 发明授权

US07203474B2 Receiver system 有权
标题翻译：接收机系统
公开(公告)号：US07203474B2
公开(公告)日：2007-04-10
申请号：US10277870
申请日：2002-10-23
申请人： Yoshikazu Shimada , Hiroyuki Ashida
发明人： Yoshikazu Shimada , Hiroyuki Ashida
IPC分类号： H04B1/10 , H03H7/00
CPC分类号： H04B1/12 , H04B1/1036
摘要： A conventional receiver system has a filter circuit with unsatisfactory gain characteristics, and thus does not offer satisfactory reception performance. A receiver system of the invention has a filter circuit employing an equivalent inductor circuit including a capacitor, a gyrator composed of a plurality of operational transconductance amplifiers and having the capacitor as a load, and a resistor connected in series with the capacitor. A conventional receiver system has a band-pass filter circuit with a low third-order input intercept point, and thus does not offer satisfactory reception performance. The receiver system of the invention has, in the stage following a mixer, a band-pass filter circuit composed of a low-pass filter and a band-pass filter receiving the output signal of the low-pass filter, wherein the value obtained by dividing the higher cutoff frequency of the band-pass filter by the lower cutoff frequency thereof is smaller than 2, the center frequency of the band-pass filter is within a range of from about 1 to 3 MHz, and the cutoff frequency of the low-pass filter is higher than the center frequency of the band-pass filter.
摘要翻译：传统的接收机系统具有不令人满意的增益特性的滤波器电路，因此不能提供令人满意的接收性能。本发明的接收机系统具有采用等效电感电路的滤波电路，该等效电感电路包括电容器，由多个运算跨导放大器组成的回转器，并具有作为负载的电容器和与该电容器串联连接的电阻器。传统的接收机系统具有带三通道输入截点低的带通滤波器电路，因此不能提供令人满意的接收性能。本发明的接收机系统在混频器之后的阶段中，具有由低通滤波器和接收低通滤波器的输出信号的带通滤波器构成的带通滤波器电路，其中，由将带通滤波器的较高截止频率除以其较低截止频率小于2，带通滤波器的中心频率在约1至3MHz的范围内，并且低通滤波器的截止频率通滤波器高于带通滤波器的中心频率。

8. 发明申请

US20060258321A1 Receiver system 有权
公开(公告)号：US20060258321A1
公开(公告)日：2006-11-16
申请号：US11488768
申请日：2006-07-19
申请人： Yoshikazu Shimada , Hiroyuki Ashida
发明人： Yoshikazu Shimada , Hiroyuki Ashida
IPC分类号： H04B1/28 , H04B1/16
CPC分类号： H04B1/12 , H04B1/1036
摘要： A conventional receiver system has a filter circuit with unsatisfactory gain characteristics, and thus does not offer satisfactory reception performance. A receiver system of the invention has a filter circuit employing an equivalent inductor circuit including a capacitor, a gyrator composed of a plurality of operational transconductance amplifiers and having the capacitor as a load, and a resistor connected in series with the capacitor. A conventional receiver system has a band-pass filter circuit with a low third-order input intercept point, and thus does not offer satisfactory reception performance. The receiver system of the invention has, in the stage following a mixer, a band-pass filter circuit composed of a low-pass filter and a band-pass filter receiving the output signal of the low-pass filter, wherein the value obtained by dividing the higher cutoff frequency of the band-pass filter by the lower cutoff frequency thereof is smaller than 2, the center frequency of the band-pass filter is within a range of from about 1 to 3 MHz, and the cutoff frequency of the low-pass filter is higher than the center frequency of the band-pass filter.

9. 发明申请

US20080207155A1 Receiver system 审中-公开
标题翻译：接收机系统
公开(公告)号：US20080207155A1
公开(公告)日：2008-08-28
申请号：US11979801
申请日：2007-11-08
申请人： Yoshikazu Shimada , Hiroyuki Ashida
发明人： Yoshikazu Shimada , Hiroyuki Ashida
IPC分类号： H04B1/10
CPC分类号： H04B1/12 , H04B1/1036
摘要： A receiver system includes an antenna to receive a high-frequency signal; a first band pass filter circuit to eliminate unnecessary frequency components from the high-frequency signal; a low-noise amplifier to amplify signal output from the first band pass filter circuit; a local oscillator to produce a local oscillation signal; a mixer to mix signal output from the low-noise amplifier and the local oscillation signal to produce an intermediate signal; a second band pass filter circuit to eliminate unnecessary frequency components from the intermediate signal; an amplifier to amplify signal output from the second band pass filter circuit; a demodulator circuit to demodulate signal output from the amplifier; an analog-to-digital converter circuit to convert signal output from the demodulator into digital signal.
摘要翻译：接收机系统包括：接收高频信号的天线; 第一带通滤波器电路，用于从高频信号中消除不必要的频率分量; 低噪声放大器，用于放大来自第一带通滤波器电路的信号输出; 本地振荡器产生本地振荡信号; 混合器，用于混合来自低噪声放大器的信号输出和本地振荡信号以产生中间信号; 第二带通滤波器电路，用于从所述中间信号中消除不必要的频率分量; 放大器，用于放大从第二带通滤波器电路输出的信号; 解调器电路，用于解调从放大器输出的信号; 用于将从解调器输出的信号转换为数字信号的模拟 - 数字转换器电路。

10. 发明授权

US06980776B2 Transceiver apparatus 有权
标题翻译：收发器
公开(公告)号：US06980776B2
公开(公告)日：2005-12-27
申请号：US10309344
申请日：2002-12-04
申请人： Yoshikazu Shimada , Hiroyuki Ashida , Katsuya Ogura , Sadao Igarashi
发明人： Yoshikazu Shimada , Hiroyuki Ashida , Katsuya Ogura , Sadao Igarashi
IPC分类号： H04B1/40 , H04B1/44
CPC分类号： H04B1/40
摘要： The present invention provides a transceiver apparatus that permits miniaturization even when the antenna thereof is an unbalanced circuit and the transmitter circuit section and receiver circuit section thereof are balanced circuits.The transceiver apparatus is constituted comprising: a semiconductor integrated circuit device that mounts on the same semiconductor chip a balanced receiver circuit 41 for receiving a received signal as a differential input and balanced transmitter circuit 52 for outputting a transmitted signal as a differential output, and that has at least two terminals 71,72 connected to connecting nodes that connect the balanced receiver circuit 41 and the balanced transmitter circuit 52; first and second capacitors C2,C3 connected to the terminals 71, 72 respectively; an external inductor L1 connected to the first and second capacitors C2, C3; a band pass filter 2 and an antenna 1 coupled to the first capacitor C2; and a third capacitor C1 connected to the second capacitor C3.
摘要翻译：本发明提供一种即使当其天线是不平衡电路且其发射机电路部分和接收机电路部分是平衡电路时也允许小型化的收发机装置。该收发器装置包括：半导体集成电路器件，其安装在同一半导体芯片上，用于接收作为差分输入的接收信号的平衡接收器电路41和用于输出作为差分输出的发送信号的平衡发送器电路52，并且连接到连接平衡式接收电路41和平衡发射机电路52的连接节点的至少两个终端71,72; 连接到端子71,72的第一和第二电容器C 2，C 3; 连接到第一和第二电容器C 2，C 3的外部电感器L 1; 带通滤波器2和耦合到第一电容器C 2的天线1; 以及连接到第二电容器C 3的第三电容器C 1。

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