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

US20070142012A1 Wireless communication receiver 审中-公开
标题翻译：无线通信接收机
公开(公告)号：US20070142012A1
公开(公告)日：2007-06-21
申请号：US11702493
申请日：2007-02-06
申请人： Yukinori Akamine , Hisayoshi Kajiwara , Satoshi Tanaka , Takashi Yano , Hirotake Ishii , Akio Yamamoto , Kazuaki Hori , Kazuhiko Hikasa
发明人： Yukinori Akamine , Hisayoshi Kajiwara , Satoshi Tanaka , Takashi Yano , Hirotake Ishii , Akio Yamamoto , Kazuaki Hori , Kazuhiko Hikasa
IPC分类号： H04B1/06 , H04B7/00
CPC分类号： H03G3/3078 , H03G3/3052 , H04B1/707
摘要： A wireless communication receiver that is able to lessen the effect of noise that accompanies gain change by programmable gain amplifiers. The receiver includes an AGC controller which controls the timing at which the programmable gain amplifiers make gain change, using a terminal counter and a sequencer. The receiver prevents gain change noise signals during the reception of control signals and other signals that are susceptible to noise. By the timing control feature, the programmable gain amplifiers make gain change while reducing noise impact.
摘要翻译：一种无线通信接收机，能够通过可编程增益放大器减轻伴随增益变化的噪声影响。接收机包括AGC控制器，其使用终端计数器和定序器来控制可编程增益放大器使增益改变的定时。接收器在接收到易受噪声的控制信号和其它信号期间防止增益变化噪声信号。通过定时控制功能，可编程增益放大器可实现增益改变，同时降低噪声影响。

2. 发明授权

US07194244B2 Wireless communication receiver 失效
公开(公告)号：US07194244B2
公开(公告)日：2007-03-20
申请号：US10253648
申请日：2002-09-25
申请人： Yukinori Akamine , Hisayoshi Kajiwara , Satoshi Tanaka , Takashi Yano , Hirotake Ishii , Akio Yamamoto , Kazuaki Hori , Kazuhiko Hikasa
发明人： Yukinori Akamine , Hisayoshi Kajiwara , Satoshi Tanaka , Takashi Yano , Hirotake Ishii , Akio Yamamoto , Kazuaki Hori , Kazuhiko Hikasa
IPC分类号： H04B1/06
CPC分类号： H03G3/3078 , H03G3/3052 , H04B1/707
摘要： A wireless communication receiver that is able to lessen the effect of noise that accompanies gain change by programmable gain amplifiers. The receiver includes an AGC controller which controls the timing at which the programmable gain amplifiers make gain change, using a terminal counter and a sequencer. The receiver prevents gain change noise signals during the reception of control signals and other signals that are susceptible to noise. By the timing control feature, the programmable gain amplifiers make gain change while reducing noise impact.

3. 发明授权

US07260373B2 Direct conversion receiver 有权
标题翻译：直接转换接收机
公开(公告)号：US07260373B2
公开(公告)日：2007-08-21
申请号：US10727612
申请日：2003-12-05
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： H04B1/10
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

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

US07856218B2 Direct conversion receiver 有权
标题翻译：直接转换接收机
公开(公告)号：US07856218B2
公开(公告)日：2010-12-21
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： H04B1/10
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

6. 发明申请

US20130100999A1 SEMICONDUCTOR DEVICE 审中-公开
标题翻译：半导体器件
公开(公告)号：US20130100999A1
公开(公告)日：2013-04-25
申请号：US13806460
申请日：2010-06-22
申请人： Yoshikazu Furuta , Kazuaki Hori , Yukinori Akamine
发明人： Yoshikazu Furuta , Kazuaki Hori , Yukinori Akamine
IPC分类号： H04B1/40
CPC分类号： H04B1/40 , H03F1/0227 , H03F1/30 , H03F1/56 , H03F3/189 , H03F3/195 , H03F3/24 , H03F3/245 , H03F3/45968 , H03F2200/222 , H03F2200/318 , H03F2200/336 , H03F2200/375 , H03F2200/387 , H03F2200/408 , H03F2200/447 , H03F2200/451 , H03F2200/504 , H03G3/004 , H03G3/3042
摘要： In a transmission portion of a semiconductor device, a first amplification portion receives a digital baseband signal and amplifies the signal with a first gain through digital processing. A digital-to-analog conversion portion converts the digital baseband signal amplified by the first amplification portion into an analog baseband signal. A modulation portion generates a transmission signal by modulating a local oscillation signal with the analog baseband signal. A second amplification portion amplifies the transmission signal with a variable second gain. A control unit receives information representing a transmission mode and adjusts the first gain in accordance with the transmission mode.
摘要翻译：在半导体器件的透射部分中，第一放大部分接收数字基带信号，并通过数字处理以第一增益放大信号。数模转换部分将由第一放大部分放大的数字基带信号转换为模拟基带信号。调制部分通过用模拟基带信号调制本地振荡信号来产生发送信号。第二放大部分以可变的第二增益放大发送信号。控制单元接收表示传输模式的信息，并根据传输模式调整第一增益。

7. 发明申请

US20060293004A1 Semiconductor integrated circuit device and wireless communication system 审中-公开
标题翻译：半导体集成电路器件和无线通信系统
公开(公告)号：US20060293004A1
公开(公告)日：2006-12-28
申请号：US11510764
申请日：2006-08-28
申请人： Kiyoshi Irie , Kazuaki Hori , Kazuhiko Hikasa
发明人： Kiyoshi Irie , Kazuaki Hori , Kazuhiko Hikasa
IPC分类号： H01Q11/12 , H04B1/06 , H04B1/04
CPC分类号： H03G1/0088 , H03F3/45098 , H03F2200/294 , H03F2203/45496 , H03F2203/45504 , H03F2203/45722 , H03G1/0023 , H04B1/707 , H04B2201/70706
摘要： The dynamic range is changed by switching a current applied to an amplifying circuit to obtain the minimum ICP required to keep linearity with the number of multiplexes even when the number of multiplexes of data is changed by switching the operation current of the amplifying circuits of the transmission system and also supplying the information about number of multiplexes of data to be transmitted to the amplifying circuits of the transmission system from the baseband circuit. Thereby, the signal can be transmitted without distortion even when the number of multiplexes increases and the current of the amplifying circuit may be reduced when the number of multiplexes is small in order to reduce the current consumption in the communication semiconductor integrated circuit device which can form a wireless communication system of the code division multiplex system such as W-CDMA system.
摘要翻译：通过切换施加到放大电路的电流来改变动态范围，以便即使当通过切换传输的放大电路的操作电流来改变数据的多路复用数量时，获得与多路复用数保持线性关系所需的最小ICP 并且还从基带电路向发送系统的放大电路提供关于要发送的数据的复用数量的信息。因此，即使多路复用数量增加，信号也可以无失真地发送，并且当多路复用数量少时可以减小放大电路的电流，以便减少可形成的通信半导体集成电路器件中的电流消耗诸如W-CDMA系统的码分多路复用系统的无线通信系统。

8. 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。

9. 发明授权

US07463091B2 Communication semiconductor integrated circuit device and wireless communication system 失效
公开(公告)号：US07463091B2
公开(公告)日：2008-12-09
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： H03G3/20
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.

10. 发明授权

US06750719B2 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：US06750719B2
公开(公告)日：2004-06-15
申请号：US10323819
申请日：2002-12-20
申请人： Kenji Toyota , Kazuaki Hori , Kazuhiko Hikasa
发明人： Kenji Toyota , Kazuaki Hori , Kazuhiko Hikasa
IPC分类号： H03G310
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。

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