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. 发明授权

US08095094B2 Communication semiconductor integrated circuit, communication electronic component and wireless communication system 有权
标题翻译：通信半导体集成电路，通信电子元件和无线通信系统
公开(公告)号：US08095094B2
公开(公告)日：2012-01-10
申请号：US12263571
申请日：2008-11-03
申请人： Hiroaki Matsui , Taizo Yamawaki , Yoshiaki Harasawa , Steve Williams
发明人： Hiroaki Matsui , Taizo Yamawaki , Yoshiaki Harasawa , Steve Williams
IPC分类号： H01Q11/12 , H04B1/04
CPC分类号： H03F3/211 , H03F3/45085 , H03F2200/78 , H03G3/3042
摘要： A communication semiconductor integrated circuit includes a phase control loop and an amplitude control loop. A gain of a variable gain amplifier when it is detected from an output of the comparator that the amplitudes of the reference signal and the feedback signal are equal to each other while a predetermined DC voltage is applied to an amplifier which amplifies an output of a transmission oscillation circuit and is controlled by the amplitude control loop to vary the gain of the variable gain amplifier on a feedback path is held in a register. Thereafter, the DC voltage is changed to another value to detect the gain of the variable gain amplifier, so that the gain of a variable gain amplifier on the forward path is decided on the basis of the detected gain and the gain held in the register.
摘要翻译：通信半导体集成电路包括相位控制环路和幅度控制环路。当从比较器的输出检测到可变增益放大器的增益时，参考信号和反馈信号的幅度彼此相等，同时将预定的DC电压施加到放大器，其放大传输的输出振荡电路并由幅度控制环路控制，将可变增益放大器的增益在反馈路径上保持在寄存器中。此后，将DC电压改变为另一个值以检测可变增益放大器的增益，从而基于检测到的增益和保持在寄存器中的增益来确定正向通路上的可变增益放大器的增益。

2. 发明授权

US07486142B2 Radio frequency power amplifying module with hetero junction bipolar transistor 有权
标题翻译：具有异质结双极晶体管的射频功率放大模块
公开(公告)号：US07486142B2
公开(公告)日：2009-02-03
申请号：US11618197
申请日：2006-12-29
申请人： Hirokazu Tsurumaki , Hiroyuki Nagai , Tomio Furuya , Yoshiaki Harasawa , Makoto Tabei
发明人： Hirokazu Tsurumaki , Hiroyuki Nagai , Tomio Furuya , Yoshiaki Harasawa , Makoto Tabei
IPC分类号： H03G3/30
CPC分类号： H03G3/3047 , H03F1/302 , H03F3/195 , H03F3/343 , H03F2200/447 , H03F2200/451
摘要： The present invention is directed to compensate electric properties of an RF power module depending on changes with time, temperature dependency, variations, and the like of grounded emitter current amplification factor of an HBT. A compound semiconductor integrated circuit supplies reference current of a reference HBT depending on hFE of an HBT to an input terminal of a first current mirror of a bias circuit of a silicon semiconductor integrated circuit. The base of an output HBT of the compound semiconductor integrated circuit is biased with bias current which increases in response to decrease in hFE of the HBT from an output of the first current mirror of the silicon semiconductor integrated circuit.
摘要翻译：本发明旨在根据HBT的接地发射极电流放大因子随时间，温度依赖性，变化等的变化来补偿RF功率模块的电性能。化合物半导体集成电路将HBT的hFE的参考电流提供给硅半导体集成电路的偏置电路的第一电流镜的输入端。化合物半导体集成电路的输出HBT的基极由偏置电流偏置，该偏置电流响应于HBT的hFE从硅半导体集成电路的第一电流镜的输出的减小而增加。

3. 发明授权

US07444123B2 Transmitter and mobile communication terminal using the same 失效
标题翻译：发射机和移动通信终端使用相同
公开(公告)号：US07444123B2
公开(公告)日：2008-10-28
申请号：US11335510
申请日：2006-01-20
申请人： Taizo Yamawaki , Yoshiaki Harasawa
发明人： Taizo Yamawaki , Yoshiaki Harasawa
IPC分类号： H01Q11/12 , H04B1/04
CPC分类号： H04B1/04 , H04B1/406 , H04B2001/0416
摘要： With a dual mode transmitter capable of handling two modulation methods for nonconstant amplitude modulation and constant amplitude modulation, respectively, speed-up of transition between modes is implemented. In a mode handling the constant amplitude modulation, first capacitors included in a low-pass filter constituting an AM loop, and a second capacitor included in an integrator are kept recharged from a first constant-voltage power supply and a second constant-voltage power supply by use of a first switch and a second switch, respectively. By doing so, a value of voltage to be recharged at the time of a mode changeover is decreased, and further, a first variable-gain amplifier starts control of a gain while avoiding a region where the output voltage of the first variable-gain amplifier has slow response against an input voltage.
摘要翻译：利用双模式发射机能够分别处理非恒定幅度调制和恒定幅度调制的两种调制方式，实现了模式间转换的加速。在处理恒定幅度调制的模式中，包括在构成AM环路的低通滤波器中的第一电容器和积分器中包括的第二电容器从第一恒压电源和第二恒压电源保持再充电分别使用第一开关和第二开关。通过这样做，减少在模式切换时要再充电的电压值，此外，第一可变增益放大器开始增益控制，同时避免第一可变增益放大器的输出电压对输入电压响应缓慢。

4. 发明申请

US20060135093A1 Transmitter and mobile communication terminal using the same 失效
公开(公告)号：US20060135093A1
公开(公告)日：2006-06-22
申请号：US11304914
申请日：2005-12-16
申请人： Masahiro Ito , Taizo Yamawaki , Yoshiaki Harasawa
发明人： Masahiro Ito , Taizo Yamawaki , Yoshiaki Harasawa
IPC分类号： H01Q11/12
CPC分类号： H04B1/0475 , H03F1/0205 , H03F1/0261 , H03F2200/294
摘要： A transmitter employing variable gain amplifiers and operating with both constant and nonconstant envelope modulation systems is contrived to suppress variation in the transmitting power when constant envelope modulation is performed. The transmitter comprises a PM loop, an AM loop, and a variable gain amplifier which is shared by the PM loop and the AM loop and combines phase information that the PM loop outputs and envelope information that the AM loop outputs by gain control. The variable gain amplifier comprises a variable gain amplifier body having a supply voltage terminal and a bias current detection terminal for extracting a bias current corresponding to a gain, wherein the gain changes with a change in the potential of the supply voltage terminal, and a bias control block connected to the supply voltage terminal and the bias current detection terminal. Thereby, a bias control loop is formed to control the bias current so that the gain in the case of constant envelope modulation becomes a predetermined value.

5. 发明申请

US20050118976A1 Receiving system and semiconductor integrated circuit device for processing wireless communication signal 有权
标题翻译：接收系统和半导体集成电路设备，用于处理无线通信信号
公开(公告)号：US20050118976A1
公开(公告)日：2005-06-02
申请号：US10842445
申请日：2004-05-11
申请人： Motoki Murakami , Yutaka Igarashi , Akio Yamamoto , Isao Ikuta , Yoshiaki Harasawa
发明人： Motoki Murakami , Yutaka Igarashi , Akio Yamamoto , Isao Ikuta , Yoshiaki Harasawa
IPC分类号： H04B1/30 , H04B1/16 , H03H11/16 , H03K3/00 , H03K5/13
CPC分类号： H04B1/30
摘要： The invention provides a receiving system and a transmitting system capable of decreasing an offset between differential signals and between quadrature signals and improving a manufacturing yield and a semiconductor integrated circuit device for processing a wireless communication signal having therein the systems. A receiving system includes: a local oscillator for generating an oscillation signal in a desired frequency; a 90-degree phase-shifting circuit for generating a signal by shifting a phase of the oscillation signal output from the local oscillator by 90 degrees; a first mixer for mixing one of differential reception signals with an output signal of the first 90-degree phase-shifting circuit and outputting frequency-converted differential signals; and a second mixer for mixing another one of the differential reception signals with an output signal of the local oscillator and outputting frequency-converted differential signals.
摘要翻译：本发明提供一种能够减少差分信号与正交信号之间的偏移并提高制造成品率的接收系统和发送系统，以及用于处理其中具有系统的无线通信信号的半导体集成电路装置。接收系统包括：本地振荡器，用于产生期望频率的振荡信号; 用于通过将从本地振荡器输出的振荡信号的相位相移90度来产生信号的90度相移电路; 第一混频器，用于将差分接收信号中的一个与第一90度移相电路的输出信号混频并输出经频率转换的差分信号; 以及第二混频器，用于将另一个差分接收信号与本地振荡器的输出信号混频并输出经变频的差分信号。

6. 发明授权

US08649741B2 Radio frequency module having an isolation mode between transmission mode and power saving mode 有权
标题翻译：射频模块在传输模式和省电模式之间具有隔离模式
公开(公告)号：US08649741B2
公开(公告)日：2014-02-11
申请号：US13204400
申请日：2011-08-05
申请人： Masanori Iijima , Yoshiaki Harasawa
发明人： Masanori Iijima , Yoshiaki Harasawa
IPC分类号： H04B1/44
CPC分类号： H03K17/6221
摘要： A radio frequency module is configured to enter a power saving mode with high reliability. The radio frequency module includes, e.g., a first switch transistor for coupling a transmission node to an antenna, a second switch transistor for shunting the transmission node to a ground voltage, and a level shift circuit for performing on-off control of the first and second switch transistors by positive and negative power supply voltages. The level shift circuit, upon receiving a sleep instruction while the module is in a transmission operation mode in which the first switch transistor for coupling a transmission node to an antenna is turned on and the second switch transistor for shunting the transmission node to a ground voltage is turned off, first transitions to an isolation operation mode in which the first switch transistor for coupling a transmission node to an antenna is turned off and the second switch transistor for shunting the transmission node to a ground voltage is turned on for a first period of time, and then transitions to a sleep mode in which the positive and negative power supply voltages are deactivated.
摘要翻译：射频模块被配置为以高可靠性进入省电模式。射频模块包括例如用于将发送节点耦合到天线的第一开关晶体管，用于将发送节点分流到接地电压的第二开关晶体管，以及用于执行第一和第二开关晶体管的开关控制的电平移位电路，第二开关晶体管由正和负电源电压。电平移位电路在模块处于用于将发送节点耦合到天线的第一开关晶体管接通的传输操作模式下接收到休眠指令时，以及用于将发送节点分流到接地电压的第二开关晶体管关闭，首先转换到隔离操作模式，其中用于将传输节点耦合到天线的第一开关晶体管被截止，并且用于将发送节点分流到接地电压的第二开关晶体管接通第一周期时间，然后转换到休眠模式，其中正和负电源电压被去激活。

7. 发明申请

US20120163247A1 RADIO-FREQUENCY MODULE AND RADIO COMMUNICATION SYSTEM 有权
标题翻译：无线电频率模块和无线电通信系统
公开(公告)号：US20120163247A1
公开(公告)日：2012-06-28
申请号：US13314241
申请日：2011-12-08
申请人： Kenichi SHIMAMOTO , Yoshiaki HARASAWA , Tadashi MATSUOKA
发明人： Kenichi SHIMAMOTO , Yoshiaki HARASAWA , Tadashi MATSUOKA
IPC分类号： H04B1/02 , H04B7/005
CPC分类号： H04B1/006 , H04B1/525
摘要： There is provided a radio-frequency module and a radio communication system capable of supporting multiple bands at low cost or small size. A high-frequency power amplifier device includes a power amplifier circuit unit for GSM and a control circuit outputting antenna switch control signals with a VSW1 level or a VSW2 level in response to a mode setting signal for selecting GSM or W-CDMA. The VSW2 level is generated by boosting the VSW1 level using a clock signal from an oscillation circuit. When GSM is selected by the mode setting signal, the high-frequency power amplifier device stops the oscillation circuit and outputs the antenna switch control signals of the VSW1 level to an antenna switch device. When W-CDMA is selected by the mode setting signal, the high-frequency power amplifier device outputs the antenna switch control signals of the VSW2 level to the antenna switch device, using the oscillation circuit.
摘要翻译：提供了能够以低成本或小尺寸支持多个频带的射频模块和无线电通信系统。高频功率放大器装置包括用于GSM的功率放大器电路单元和响应于用于选择GSM或W-CDMA的模式设置信号而输出具有VSW1电平或VSW2电平的天线切换控制信号的控制电路。通过使用来自振荡电路的时钟信号来提升VSW1电平来产生VSW2电平。当通过模式设置信号选择GSM时，高频功率放大器装置停止振荡电路，并将天线开关控制信号VSW1电平输出到天线开关装置。当通过模式设置信号选择W-CDMA时，高频功率放大器装置使用振荡电路向天线开关装置输出VSW2电平的天线开关控制信号。

8. 发明申请

US20120064952A1 Radio Frequency Module Having an Isolation Mode Between Transmission Mode and Power Saving Mode 有权
标题翻译：射频模块在传输模式和省电模式之间具有隔离模式
公开(公告)号：US20120064952A1
公开(公告)日：2012-03-15
申请号：US13204400
申请日：2011-08-05
申请人： Masanori Iijima , Yoshiaki Harasawa
发明人： Masanori Iijima , Yoshiaki Harasawa
IPC分类号： H04W52/02 , H04W88/02
CPC分类号： H03K17/6221
摘要： A radio frequency module is configured to enter a power saving mode with high reliability. The radio frequency module includes, e.g., a first switch transistor for coupling a transmission node to an antenna, a second switch transistor for shunting the transmission node to a ground voltage, and a level shift circuit for performing on-off control of the first and second switch transistors by positive and negative power supply voltages. The level shift circuit, upon receiving a sleep instruction while the module is in a transmission operation mode in which the first switch transistor for coupling a transmission node to an antenna is turned on and the second switch transistor for shunting the transmission node to a ground voltage is turned off, first transitions to an isolation operation mode in which the first switch transistor for coupling a transmission node to an antenna is turned off and the second switch transistor for shunting the transmission node to a ground voltage is turned on for a first period of time, and then transitions to a sleep mode in which the positive and negative power supply voltages are deactivated.
摘要翻译：射频模块被配置为以高可靠性进入省电模式。射频模块包括例如用于将发送节点耦合到天线的第一开关晶体管，用于将发送节点分流到接地电压的第二开关晶体管，以及用于执行第一和第二开关晶体管的开关控制的电平移位电路，第二开关晶体管由正和负电源电压。电平移位电路在模块处于用于将发送节点耦合到天线的第一开关晶体管接通的传输操作模式下接收到休眠指令时，以及用于将发送节点分流到接地电压的第二开关晶体管关闭，首先转换到隔离操作模式，其中用于将传输节点耦合到天线的第一开关晶体管被截止，并且用于将发送节点分流到接地电压的第二开关晶体管接通第一周期时间，然后转换到休眠模式，其中正和负电源电压被去激活。

9. 发明申请

US20090068967A1 COMMUNICATION SEMICONDUCTOR INTEGRATED CIRCUIT, COMMUNICATION ELECTRONIC COMPONENT AND WIRELESS COMMUNICATION SYSTEM 有权
标题翻译：通信半导体集成电路，通信电子部件和无线通信系统
公开(公告)号：US20090068967A1
公开(公告)日：2009-03-12
申请号：US12263571
申请日：2008-11-03
申请人： Hiroaki Matsui , Taizo Yamawaki , Yoshiaki Harasawa , Steve Williams
发明人： Hiroaki Matsui , Taizo Yamawaki , Yoshiaki Harasawa , Steve Williams
IPC分类号： H01Q11/12
CPC分类号： H03F3/211 , H03F3/45085 , H03F2200/78 , H03G3/3042
摘要： A communication semiconductor integrated circuit includes a phase control loop and an amplitude control loop. A gain of a variable gain amplifier when it is detected from an output of the comparator that the amplitudes of the reference signal and the feedback signal are equal to each other while a predetermined DC voltage is applied to an amplifier which amplifies an output of a transmission oscillation circuit and is controlled by the amplitude control loop to vary the gain of the variable gain amplifier on a feedback path is held in a register. Thereafter, the DC voltage is changed to another value to detect the gain of the variable gain amplifier, so that the gain of a variable gain amplifier on the forward path is decided on the basis of the detected gain and the gain held in the register.
摘要翻译：通信半导体集成电路包括相位控制环路和幅度控制环路。当从比较器的输出检测到可变增益放大器的增益时，参考信号和反馈信号的幅度彼此相等，同时将预定的DC电压施加到放大器，其放大传输的输出振荡电路并由幅度控制环路控制，将可变增益放大器的增益在反馈路径上保持在寄存器中。此后，将DC电压改变为另一个值以检测可变增益放大器的增益，从而基于检测到的增益和保持在寄存器中的增益来确定正向通路上的可变增益放大器的增益。

10. 发明申请

US20060084399A1 Semiconductor device and module having a transceiver with a built-in regulator 有权
标题翻译：具有具有内置调节器的收发器的半导体器件和模块
公开(公告)号：US20060084399A1
公开(公告)日：2006-04-20
申请号：US11246253
申请日：2005-10-11
申请人： Taizo Yamawaki , Yoshiaki Harasawa
发明人： Taizo Yamawaki , Yoshiaki Harasawa
IPC分类号： H04B1/04
CPC分类号： H04B1/1607 , H04B1/38
摘要： An object of the present invention is to provide a transmitter-receiver RF-IC having a built-in regulator, which can reduce a minimum value of an input voltage of the regulator without increasing its area, the input voltage being supplied from a battery, the transmitter-receiver RF-IC being capable of normal operation with the input voltage, whereby the operating time of a mobile terminal can be improved as compared with the prior art. According to the present invention, in order to achieve the above object, an output end of a regulator built into a RF-IC is first led to the outside of the RF-IC. Then, the output end is led to an area in proximity to the circuit block by use of wiring on a mobile terminal substrate whose resistance is low, or by use of wiring on a module whose resistance is low, thereby shortening the wiring length inside the RF-IC.
摘要翻译：本发明的目的是提供一种具有内置调节器的发射器 - 接收器RF-IC，其可以减小调节器的输入电压的最小值而不增加其面积，从电池供应的输入电压，发射机 - 接收机RF-IC能够利用输入电压进行正常操作，由此与现有技术相比可以提高移动终端的操作时间。根据本发明，为了实现上述目的，首先将内置于RF-IC中的调节器的输出端引导到RF-IC的外部。然后，通过使用电阻较低的移动终端基板上的布线，或者通过使用电阻较低的模块上的布线，将输出端导向靠近电路块的区域，从而缩短电路内部的布线长度 RF-IC。

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