专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20120206201A1 SEMICONDUCTOR DEVICE 有权
标题翻译：半导体器件
公开(公告)号：US20120206201A1
公开(公告)日：2012-08-16
申请号：US13360323
申请日：2012-01-27
申请人： Masakazu Mizokami , Kazuaki Hori
发明人： Masakazu Mizokami , Kazuaki Hori
IPC分类号： H03G3/20 , H03F3/45
CPC分类号： H03F3/245 , H03F1/0266 , H03F1/0277 , H03F1/223 , H03F1/56 , H03F3/195 , H03F3/211 , H03F3/45179 , H03F3/45654 , H03F3/72 , H03F2200/222 , H03F2200/301 , H03F2200/453 , H03F2200/462 , H03F2200/555 , H03F2203/21142 , H03F2203/21175 , H03F2203/45212 , H03F2203/45418 , H03F2203/45544 , H03F2203/45728 , H03F2203/7209 , H03F2203/7221 , H03F2203/7236 , H03G3/3042
摘要： A variable gain amplifier circuit includes output nodes, a plurality of amplifiers, and a detection circuit. The amplifiers are coupled in parallel with each other between the output nodes and a reference node and selectively assume an operating state in accordance with a control signal. The detection circuit outputs a detection signal according to the magnitude of an input signal to each amplifier. Each amplifier includes a first transistor, a second transistor, and a bias circuit. The first transistor receives, at its control electrode, the input signal or a signal proportional to the input signal. The second transistor is series-coupled to the first transistor between the first reference node and an output node. The bias circuit applies a DC voltage of a magnitude according to the detection signal to a control electrode of the second transistor.
摘要翻译：可变增益放大器电路包括输出节点，多个放大器和检测电路。放大器在输出节点和参考节点之间彼此并联耦合，并且根据控制信号选择性地采取操作状态。检测电路根据输入信号的幅度向每个放大器输出检测信号。每个放大器包括第一晶体管，第二晶体管和偏置电路。第一晶体管在其控制电极处接收与输入信号成比例的输入信号或信号。第二晶体管与第一参考节点和输出节点之间的第一晶体管串联耦合。偏置电路将根据检测信号的幅度的DC电压施加到第二晶体管的控制电极。

2. 发明申请

US20100231305A1 SEMICONDUCTOR DEVICE FOR SIGNAL AMPLIFICATION 有权
标题翻译：用于信号放大的半导体器件
公开(公告)号：US20100231305A1
公开(公告)日：2010-09-16
申请号：US12721261
申请日：2010-03-10
申请人： Masakazu Mizokami , Takaya Maruyama , Kazuaki Hori
发明人： Masakazu Mizokami , Takaya Maruyama , Kazuaki Hori
IPC分类号： H03F3/68
CPC分类号： H03F3/245 , H03F1/301 , H03F3/195 , H03F3/45179 , H03F2200/222 , H03F2200/336 , H03F2200/447 , H03F2200/451 , H03F2200/456 , H03F2200/534 , H03F2203/45544 , H03F2203/45604 , H03F2203/45616 , H03F2203/45728 , H03G1/0088 , H03G3/3042
摘要： A semiconductor device for transmitting-signal amplification which has a fine resolution, a high dynamic range, a small occupied area, and low power consumption, is realized. An input signal amplitude is reduced every one half by a ladder network, and a transconductance amplifier stage is arranged corresponding to each node of the ladder network. An output of the transconductance amplifier stage is coupled to an output signal line in common. According to a control word WC , the transconductance amplifier stage is enabled selectively, and the output current which appears in the output signal line is added.
摘要翻译：实现了具有精细分辨率，高动态范围，小占用面积和低功耗的用于发射信号放大的半导体器件。输入信号幅度由梯形网络每半衰减一次，跨梯级放大级与梯形网络的每个节点相对应设置。跨导放大器级的输出共同地耦合到输出信号线。根据控制字WC <21：0>，跨导放大器级选择性地被使能，并且添加出现在输出信号线中的输出电流。

3. 发明申请

US20080024227A1 Communication semiconductor integrated circuit device and wireless communication system 失效
标题翻译：通信半导体集成电路器件和无线通信系统
公开(公告)号：US20080024227A1
公开(公告)日：2008-01-31
申请号：US11902968
申请日：2007-09-27
申请人： Kenji Toyota , Kazuaki Hori , Kazuhiko Hikasa
发明人： Kenji Toyota , Kazuaki Hori , Kazuhiko Hikasa
IPC分类号： H03G3/10
CPC分类号： H03F1/0261 , H03F3/245 , H03F3/45085 , H03G1/00 , H03G1/0023 , H03G3/3042 , H03G2201/40
摘要： The present invention provides a communication semiconductor integrated circuit device equipped with a high-frequency power amplifier circuit including a gain control amplifier and a bias circuit which supplies such a bias current as to linearly change the gain of the gain control amplifier, and a wireless communication system using the same. A bias current generating circuit which supplies a bias current to a linear amplifier that constitutes the communication high-frequency power amplifier circuit, comprises a plurality of variable current sources respectively different in current value and start level. These variable current sources are controlled according to an input control voltage and thereby combine their currents into a bias current. The combined bias current changes exponentially with respect to the input control voltage.
摘要翻译：本发明提供了一种配备有包括增益控制放大器和偏置电路的高频功率放大器电路的通信半导体集成电路装置，该偏置电路提供这样的偏置电流以线性地改变增益控制放大器的增益，以及无线通信系统使用相同。向构成通信高频功率放大器电路的线性放大器提供偏置电流的偏置电流产生电路包括分别与电流值和起始电平不同的多个可变电流源。这些可变电流源根据输入控制电压进行控制，从而将它们的电流组合成偏置电流。组合的偏置电流相对于输入控制电压呈指数变化。

4. 发明申请

US20070190960A1 Direct conversion receiver 有权
标题翻译：直接转换接收机
公开(公告)号：US20070190960A1
公开(公告)日：2007-08-16
申请号：US11725475
申请日：2007-03-20
申请人： Yukinori Akamine , Satoshi Tanaka , Akio Yamamoto , Kazuaki Hori
发明人： Yukinori Akamine , Satoshi Tanaka , Akio Yamamoto , Kazuaki Hori
IPC分类号： H04B1/26
CPC分类号： H04B1/30 , H03G3/3052
摘要： In a direct conversion receiver, to cancel a DC offset generated in the baseband processing block, negative feedback arrangements comprising a gain control amplifier and a low-pass filter are respectively attached to the I and Q signal branches of the baseband block following mixer outputs. The gain control amplifier in each negative feedback circuit is gain adjusted so that the product G·B of the gain G of a primary gain control amplifier and its own gain B will be constant and thereby the DC offset is cancelled. This DC offset cancellation can be applied in a continuous receiving system with no intermittent time during a receiving operation. Capacitance elements located off-chip can be reduced to those to be used only in the low-pass filters in the negative feedback circuits, whereas many off-chip capacitance elements have been required to be inserted between each stage of gain control amplifiers in conventional baseband chains.
摘要翻译：在直接转换接收机中，为了消除在基带处理块中产生的DC偏移，包括增益控制放大器和低通滤波器的负反馈装置分别附加到混频器输出之后的基带块的I和Q信号分支。每个负反馈电路中的增益控制放大器被增益调整，使得主增益控制放大器的增益G的乘积G.B和其自身的增益B将恒定，从而DC偏移被消除。该DC偏移消除可以应用于在接收操作期间没有间歇时间的连续接收系统中。位于片外的电容元件可以减少到仅在负反馈电路中的低通滤波器中使用的电容元件，而许多芯片外电容元件需要插入到常规基带中的增益控制放大器的每个级之间链条

5. 发明授权

US07224948B1 Transmitter and radio communication terminal using the same 有权
标题翻译：发射机和无线电通信终端使用相同的
公开(公告)号：US07224948B1
公开(公告)日：2007-05-29
申请号：US10148960
申请日：2000-01-11
申请人： Taizo Yamawaki , Satoshi Tanaka , Masaru Kokubo , Kazuo Watanabe , Masumi Kasahara , Kazuaki Hori , Julian Hildersley
发明人： Taizo Yamawaki , Satoshi Tanaka , Masaru Kokubo , Kazuo Watanabe , Masumi Kasahara , Kazuaki Hori , Julian Hildersley
IPC分类号： H04B1/04 , H01Q11/12
CPC分类号： H03C3/0983 , H03C3/0925 , H03C3/0966 , H03D7/163 , H03J2200/17 , H03L7/23 , H04B1/0475 , H04B2001/0491 , H04L25/03343
摘要： There are provided a transmitter and a wireless communication terminal apparatus using the same for solving a problem of undesired spurs due to harmonics of an output signal of a frequency synthesizer, and further solving a problem of the undesired spurs occurring when the harmonics of an output signal of a crystal oscillator are mixed into a VCO to facilitate to design a circuit or a mounting substrate. The transmitter has a relationship between an output frequency of a PLL frequency conversion circuit (5) and output frequencies of frequency synthesizers (1, 2) stored therein, and the output frequencies of the frequency synthesizers (1, 2) input into the PLL frequency conversion circuit (5) are controlled on the basis of the relationship so that the undesired spurs are suppressed. Thereby, even when the undesired spurs occur in the output of the transmitter due to a crosstalk between circuits or through a substrate, which can be easily suppressed, it is therefore possible to reduce time and cost for redesigning the circuit or the substrate.
摘要翻译：提供了一种使用该发送器和无线通信终端装置的方法，用于解决由于频率合成器的输出信号的谐波引起的不期望的杂散问题，并且进一步解决了当输出信号的谐波发生时出现的不需要的杂散的问题的晶体振荡器混合到VCO中以便于设计电路或安装衬底。发射机具有PLL频率转换电路（5）的输出频率和存储在其中的频率合成器（1,2）的输出频率与输入到PLL频率的频率合成器（1,2）的输出频率之间的关系基于该关系来控制转换电路（5），从而抑制不需要的杂散。因此，即使由于电路之间的串扰或通过可以容易地抑制的基板而在发射机的输出端发生不想要的杂散，因此可以减少重新设计电路或基板的时间和成本。

6. 发明授权

US07194242B2 Direct-conversion transmitter circuit and transceiver system 失效
标题翻译：直接转换发射机电路和收发器系统
公开(公告)号：US07194242B2
公开(公告)日：2007-03-20
申请号：US10739282
申请日：2003-12-19
申请人： Satoshi Tanaka , Taizo Yamawaki , Kazuaki Hori , Kazuo Watanabe
发明人： Satoshi Tanaka , Taizo Yamawaki , Kazuaki Hori , Kazuo Watanabe
IPC分类号： H04B1/04 , H03G3/20
CPC分类号： H03D3/007 , H03C3/40 , H04B1/30
摘要： Disclosed is a direct conversion type transmitter or transceiver circuit suitable for a mobile communication device which corresponds to broad signal output level variable width to be required by W-CDMA, which does not necessitate any high-performance low noise VCO and RF filter, capable of reducing a number of components and the cost. In the input portion of an orthogonal modulator composed of a divider, mixers, and a common load, there are provided variable attenuators. If an input signal level of the orthogonal modulator within the transmitter circuit lowers, this variable attenuator circuit is operated so as to lower the bias of the orthogonal modulator to reduce the amount of occurrence of carrier leak, and to prevent the signal during low output level and carrier leak ratio from being deteriorated. The direct conversion transmitter circuit is capable of easily realizing output level variable width of 70 dB or higher and reducing a variable amount in the high frequency circuit in which it is difficult to secure the variable gain width.
摘要翻译：公开了一种适用于移动通信设备的直接转换型发射器或收发器电路，其对应于由W-CDMA所要求的宽信号输出电平可变宽度，其不需要任何高性能低噪声VCO和RF滤波器，其能够减少了一些组件和成本。在由分频器，混频器和公共负载组成的正交调制器的输入部分中，提供可变衰减器。如果发射机电路内的正交调制器的输入信号电平降低，则该可变衰减器电路被工作，以降低正交调制器的偏置，以减少载波泄漏的发生量，并且防止在低输出电平期间的信号并且载体泄漏率不劣化。直接变换发送电路能够容易地实现70dB以上的输出电平可变宽度，并且在难以确保可变增益宽度的高频电路中减少可变量。

7. 发明授权

US06970683B2 PLL circuit and radio communication terminal apparatus using the same 失效
标题翻译： PLL电路和使用其的无线通信终端装置
公开(公告)号：US06970683B2
公开(公告)日：2005-11-29
申请号：US10375241
申请日：2003-02-28
申请人： Taizo Yamawaki , Takefumi Endo , Kazuo Watanabe , Kazuaki Hori , Julian Hildersley
发明人： Taizo Yamawaki , Takefumi Endo , Kazuo Watanabe , Kazuaki Hori , Julian Hildersley
IPC分类号： H03L7/10 , H03D13/00 , H03L7/00 , H03L7/08 , H03L7/085 , H03L7/093 , H03L7/099 , H03L7/107 , H03L7/16 , H03L7/18 , H04B1/3822 , H04B1/40 , H04L7/033
CPC分类号： H03L7/10 , H03D13/007 , H03L7/08 , H03L7/085 , H03L7/093 , H03L7/099 , H03L7/16 , H03L2207/12 , H04B1/406
摘要： In a PLL circuit, the number of LPFs is reduced to one to reduce mounting area and pin number, and to simplify design. In one embodiment, the PLL circuit includes a variable-gain phase comparator, a mixer, an LPF, VCOs, couplers, and a control circuit to controlling the on/off operation of the VCOs. The variable-gain phase comparator is capable of varying a phase difference gain. The on/off of the operation of the VCOs is controlled by the control circuit so that one of the VCOs is turned off. The phase difference conversion gain is varied in accordance with the sensitivity of the VCOs so the number of LPFs required for the PLL circuit can be reduced to only one.
摘要翻译：在PLL电路中，将LPF的数量减少到一个，以减少安装面积和引脚数量，并简化设计。在一个实施例中，PLL电路包括可变增益相位比较器，混频器，LPF，VCO，耦合器以及控制VCO的开/关操作的控制电路。可变增益相位比较器能够改变相位差增益。 VCO的操作的开/关由控制电路控制，使得VCO中的一个被关断。相位差转换增益根据VCO的灵敏度而变化，因此PLL电路所需的LPF的数量可以减少到一个。

8. 发明授权

US06384676B2 Signal processing semiconductor integrated circuit device 失效
公开(公告)号：US06384676B2
公开(公告)日：2002-05-07
申请号：US09789566
申请日：2001-02-22
申请人： Nobuhiro Kasa , Yoshiyasu Tashiro , Kazuaki Hori
发明人： Nobuhiro Kasa , Yoshiyasu Tashiro , Kazuaki Hori
IPC分类号： H01L2500
CPC分类号： H01L21/76264 , H01L27/0623 , H01L2924/0002 , H01L2924/00
摘要： A semiconductor integrated circuit comprising a first circuit block including an oscillation circuit considered to be a noise generator and a second circuit block including circuits considered to be easily affected by a noise generated by the oscillation circuit, being most likely led to a malfunction are created on a single semiconductor substrate with the first and second circuit blocks separated from each other. To put it more concretely, the first and second circuit blocks are respectively created in a first island area and a second island area on the surface of the semiconductor substrate. The first and second island areas are each enclosed by an insulating isolation band. A low-resistance semiconductor area is created in a base area excluding locations occupied by active elements in the first and second island areas and is connected to a stable voltage terminal.

9. 发明授权

US08320854B2 Semiconductor device for signal amplification 有权
公开(公告)号：US08320854B2
公开(公告)日：2012-11-27
申请号：US12721261
申请日：2010-03-10
申请人： Masakazu Mizokami , Takaya Maruyama , Kazuaki Hori
发明人： Masakazu Mizokami , Takaya Maruyama , Kazuaki Hori
IPC分类号： H01Q11/12 , H04B1/04
摘要： A semiconductor device for transmitting-signal amplification which has a fine resolution, a high dynamic range, a small occupied area, and low power consumption, is realized. An input signal amplitude is reduced every one half by a ladder network, and a transconductance amplifier stage is arranged corresponding to each node of the ladder network. An output of the transconductance amplifier stage is coupled to an output signal line in common. According to a control word WC , the transconductance amplifier stage is enabled selectively, and the output current which appears in the output signal line is added.

10. 发明申请

US20120146740A1 SEMICONDUCTOR DEVICE 审中-公开
标题翻译：半导体器件
公开(公告)号：US20120146740A1
公开(公告)日：2012-06-14
申请号：US13309350
申请日：2011-12-01
申请人： Yoshikazu FURUTA , Tetsuya Heima , Kazuaki Hori
发明人： Yoshikazu FURUTA , Tetsuya Heima , Kazuaki Hori
IPC分类号： H03C3/02 , H03H7/00
CPC分类号： H04B1/0475 , H04B1/30
摘要： The present invention provides a semiconductor device. In the semiconductor device, a signal distributor distributes a high frequency signal generated by an oscillator and inputted to an input part to first and second signals and outputs the same from first and second output parts respectively. A modulator modulates a baseband signal with the first signal and outputs the same therefrom. An offset adjustment unit compares the second signal and the first signal that leaks from the output of the modulator to thereby adjust an offset of the baseband signal. The signal distributor includes a first capacitive element provided between the input part and the first output part, and a second capacitive element provided between the first output part and the second output part. The electrostatic capacitance of the first capacitive element is larger than that of the second capacitive element.
摘要翻译：本发明提供一种半导体器件。在半导体器件中，信号分配器分配由振荡器产生的高频信号并将其输入到输入部分到第一和第二信号，并且分别从第一和第二输出部分输出。 A调制器用第一个信号调制基带信号并输出相同的信号。偏移调整单元将第二信号和从调制器的输出泄漏的第一信号进行比较，从而调整基带信号的偏移。信号分配器包括设置在输入部分和第一输出部分之间的第一电容元件和设置在第一输出部分和第二输出部分之间的第二电容元件。第一电容元件的静电电容大于第二电容元件的静电电容。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式