公开(公告)号：US07184491B2

公开(公告)日：2007-02-27

申请号：US10655045

申请日：2003-09-05

申请人： May Suzuki ,  Satoshi Tanaka ,  Taizo Yamawaki ,  Tomonori Tanoue

发明人： May Suzuki ,  Satoshi Tanaka ,  Taizo Yamawaki ,  Tomonori Tanoue

IPC分类号： H04K1/02

CPC分类号： H03F3/24 ,  H03F1/02 ,  H03F1/0205 ,  H03F1/0227 ,  H03F1/32 ,  H03F2200/102 ,  H03F2200/324 ,  H03F2200/451 ,  H03F2200/504 ,  H03F2200/66 ,  H04B2001/045 ,  H04L27/20

摘要： A linear system and an EER system are used in combination such that the EER system can also be used in a cellular phone with a wide output dynamic range. In the EER system, linear control of an amplifier becomes difficult in a low output range. Thus, use of the EER system is limited to a high output range, and the linear system is used in the low output range as in the past. A power efficiency is improved while requirements of linearity are satisfied by this structure. An effective circuit structure is proposed for a switching control system for two systems. In addition, an up-converter is constituted in combination with a step-down element with high responsiveness, whereby a power supply voltage control circuit for the EER system with a wide control range and high responsiveness is provided.

摘要翻译： 线性系统和EER系统组合使用，使得EER系统也可以用在具有宽输出动态范围的蜂窝电话中。 在EER系统中，放大器的线性控制在低输出范围内变得困难。 因此，EER系统的使用被限制在高输出范围，并且线性系统如以往那样在低输出范围内使用。 通过这种结构满足线性要求，提高了功率效率。 提出了一种用于两个系统的开关控制系统的有效电路结构。 此外，上变频器与具有高响应性的降压元件组合构成，由此提供了具有宽控制范围和高响应性的EER系统的电源电压控制电路。

公开(公告)号：US20100113089A1

公开(公告)日：2010-05-06

申请号：US12684256

申请日：2010-01-08

申请人： May Suzuki ,  Taizo Yamawaki ,  Satoshi Tanaka ,  Akio Yamamoto

发明人： May Suzuki ,  Taizo Yamawaki ,  Satoshi Tanaka ,  Akio Yamamoto

IPC分类号： H04W88/06 ,  H04M1/00

CPC分类号： H04W88/06

摘要： A multimode wireless communication apparatus including a radio frequency unit having controllable communication mode and a control unit for periodically making the radio frequency unit operate in a mobile telephone mode and, after predetermined time, switching the mode to a wireless LAN mode, wherein if occurrence of an incoming call event is detected when the radio frequency unit is in standby reception in the mobile telephone mode, the control unit suppresses the switching to the wireless LAN mode and determines whether the communication in the mobile telephone mode should be continued or not.

摘要翻译： 一种多模无线通信装置，包括具有可控通信模式的射频单元和用于周期性地使射频单元以移动电话模式工作的控制单元，并且在预定时间之后将模式切换到无线LAN模式，其中如果发生 当无线电频率单元在移动电话模式下处于待机接收时，检测到呼入事件，控制单元禁止切换到无线LAN模式，并确定是否应该继续移动电话模式的通信。

公开(公告)号：US07657282B2

公开(公告)日：2010-02-02

申请号：US10372269

申请日：2003-02-25

申请人： May Suzuki ,  Taizo Yamawaki ,  Satoshi Tanaka ,  Akio Yamamoto

发明人： May Suzuki ,  Taizo Yamawaki ,  Satoshi Tanaka ,  Akio Yamamoto

IPC分类号： H04M1/00

CPC分类号： H04W88/06

摘要： A multimode wireless communication apparatus including a radio frequency unit having controllable communication mode and a control unit for periodically making the radio frequency unit operate in a mobile telephone mode and, after predetermined time, switching the mode to a wireless LAN mode, wherein if occurrence of an incoming call event is detected when the radio frequency unit is in standby reception in the mobile telephone mode, the control unit suppresses the switching to the wireless LAN mode and determines whether the communication in the mobile telephone mode should be continued or not.

摘要翻译： 一种多模无线通信装置，包括具有可控通信模式的射频单元和用于周期性地使射频单元以移动电话模式工作的控制单元，并且在预定时间之后将模式切换到无线LAN模式，其中如果发生 当无线电频率单元在移动电话模式下处于待机接收时，检测到呼入事件，控制单元禁止切换到无线LAN模式，并确定是否应该继续移动电话模式的通信。

公开(公告)号：US08359067B2

公开(公告)日：2013-01-22

申请号：US13197684

申请日：2011-08-03

申请人： Akira Kuriyama ,  Taizo Yamawaki ,  Satoshi Tanaka

发明人： Akira Kuriyama ,  Taizo Yamawaki ,  Satoshi Tanaka

IPC分类号： H04M1/00

CPC分类号： H04B1/0483 ,  H04B1/0458

摘要： There is provided a radio frequency circuit device for multi-band and multi-mode which is low in a circuit loss, and a mobile communication terminal using the radio frequency circuit device. The radio frequency circuit device has a first path 110 that includes an amplifier 10a that amplifies signals of at least two modulation techniques in power, a matching network 20 that is connected to the amplifier and a duplexer 50 and allows the matching network to be coupled with an antenna, and a second path 111 that does not include the duplexer and allows the matching network to be coupled with the antenna. The first path is selected when the amplifier amplifies one of the signals of at least two modulation techniques, and the second path is selected when the amplifier amplifies another signal. An output impedance of the amplifier is matched with an impedance when viewing the antenna side from the amplifier in the first path and the second path.

摘要翻译： 提供了一种电路损耗低的用于多频和多模的射频电路装置，以及使用射频电路装置的移动通信终端。 射频电路装置具有第一路径110，其包括放大器10a，其放大至少两个功率调制技术的信号，连接到放大器的匹配网络20和双工器50，并允许匹配网络与 天线和第二路径111，其不包括双工器并且允许匹配网络与天线耦合。 当放大器放大至少两个调制技术的信号之一时，选择第一路径，并且当放大器放大另一信号时选择第二路径。 当从第一路径和第二路径中的放大器观看天线侧时，放大器的输出阻抗与阻抗匹配。

公开(公告)号：US20110092175A1

公开(公告)日：2011-04-21

申请号：US12975488

申请日：2010-12-22

申请人： Satoshi Tanaka ,  Kazuo Watanabe ,  Masao Hotta ,  Toyohiko Hongo ,  Taizo Yamawaki ,  Masumi Kasahara ,  Kumiko Takikawa

发明人： Satoshi Tanaka ,  Kazuo Watanabe ,  Masao Hotta ,  Toyohiko Hongo ,  Taizo Yamawaki ,  Masumi Kasahara ,  Kumiko Takikawa

IPC分类号： H04B1/10 ,  H04B7/00

CPC分类号： H04B1/30 ,  H03D2200/0047 ,  H03K21/16

摘要： A transceiver suitable for larger scale of integration employs direct conversion reception for reducing the number of filters. Also, the number of VCOs is reduced by utilizing dividers to supply a receiver and a transmitter with locally oscillated signals at an RF band. Dividers each having a fixed division ratio are used for generating locally oscillated signals for the receiver, while a divider having a switchable division ratio are used for generating the locally oscillated signal for the transmitter. In addition, a variable gain amplifier for baseband signal is provided with a DC offset voltage detector and a DC offset canceling circuit for supporting high speed data communications to accomplish fast cancellation of a DC offset by eliminating intervention of a filter within a feedback loop for offset cancellation.

摘要翻译： 适合较大规模集成的收发器采用直接转换接收，以减少滤波器的数量。 此外，通过利用分频器来为RF频带提供具有本地振荡信号的接收机和发射机来减少VCO的数量。 每个具有固定分频比的分频器用于产生用于接收机的局部振荡信号，而具有可切换分频比的分频器用于产生用于发射机的本地振荡信号。 另外，用于基带信号的可变增益放大器设置有DC偏移电压检测器和DC偏移消除电路，用于支持高速数据通信以通过消除用于偏移的反馈回路内的滤波器的干涉来实现DC偏移的快速消除 消除。

公开(公告)号：US20120069876A1

公开(公告)日：2012-03-22

申请号：US13238249

申请日：2011-09-21

申请人： Hiroshi Kamizuma ,  Satoshi Tanaka ,  Taizo Yamawaki ,  Yukinori Akamine ,  Koji Maeda

发明人： Hiroshi Kamizuma ,  Satoshi Tanaka ,  Taizo Yamawaki ,  Yukinori Akamine ,  Koji Maeda

IPC分类号： H04B1/38

CPC分类号： H04B1/0082

摘要： A transceiver includes an oscillator and a plurality of communication blocks. Each of the communication blocks includes frequency dividers and mixers. Frequency dividing number of the frequency divider included in one communication block is set to an even-numbered integer, and transmission local signals supplied from the frequency dividers to the mixer become quadrature signals having a phase difference of 90 degrees. The frequency dividing number of another frequency divider in the another communication block is set to a non-integer, and communication local signals supplied from the frequency divider to the mixers become non-quadrature signals having a phase difference at a predetermined offset angle from 90 degrees. The transceiver further includes a converting unit for giving a compensation offset amount having almost the same absolute value and having a polarity opposite to that of the offset angle to communication analog signals related to the mixer of the another communication block.

摘要翻译： 收发机包括振荡器和多个通信块。 每个通信块包括分频器和混频器。 包含在一个通信块中的分频器的分频数被设置为偶数整数，并且从分频器提供给混频器的发送本地信号变为具有90度相位差的正交信号。 将另一通信块中的另一个分频器的分频数设置为非整数，并且从分频器提供给混频器的通信本地信号变为具有从90度的预定偏移角的相位差的非正交信号 。 收发器还包括转换单元，用于给出具有与相对于另一通信块的混频器相关的通信模拟信号具有几乎相同的绝对值并且具有与偏移角的极性相反的极性的补偿偏移量。

公开(公告)号：US20090156135A1

公开(公告)日：2009-06-18

申请号：US12336178

申请日：2008-12-16

申请人： Hiroshi Kamizuma ,  Satoshi Tanaka ,  Taizo Yamawaki ,  Yukinori Akamine ,  Koji Maeda

发明人： Hiroshi Kamizuma ,  Satoshi Tanaka ,  Taizo Yamawaki ,  Yukinori Akamine ,  Koji Maeda

IPC分类号： H04B1/38 ,  H04B1/16

CPC分类号： H04B1/0082

摘要： A transceiver includes an oscillator and a plurality of communication blocks. Each of the communication blocks includes frequency dividers and mixers. Frequency dividing number of the frequency divider included in one communication block is set to an even-numbered integer, and transmission local signals supplied from the frequency dividers to the mixer become quadrature signals having a phase difference of 90 degrees. The frequency dividing number of another frequency divider in the another communication block is set to a non-integer, and communication local signals supplied from the frequency divider to the mixers become non-quadrature signals having a phase difference at a predetermined offset angle from 90 degrees. The transceiver further includes a converting unit for giving a compensation offset amount having almost the same absolute value and having a polarity opposite to that of the offset angle to communication analog signals related to the mixer of the another communication block. Increase in the number of voltage-controlled oscillators for multiband communication, broadening of the band, and increase in phase noise can be reduced.

摘要翻译： 收发机包括振荡器和多个通信块。 每个通信块包括分频器和混频器。 包含在一个通信块中的分频器的分频数被设置为偶数整数，并且从分频器提供给混频器的发送本地信号变为具有90度相位差的正交信号。 将另一通信块中的另一个分频器的分频数设置为非整数，并且从分频器提供给混频器的通信本地信号变为具有从90度的预定偏移角的相位差的非正交信号 。 收发器还包括转换单元，用于给出具有与相对于另一通信块的混频器相关的通信模拟信号具有几乎相同的绝对值并且具有与偏移角的极性相反的极性的补偿偏移量。 可以减少用于多频带通信的压控振荡器的数量的增加，频带的扩大以及相位噪声的增加。

公开(公告)号：US20080113625A1

公开(公告)日：2008-05-15

申请号：US11940733

申请日：2007-11-15

申请人： Koji Maeda ,  Satoshi Tanaka ,  Taizo Yamawaki ,  Yukinori Akamine ,  Masahiro Ito

发明人： Koji Maeda ,  Satoshi Tanaka ,  Taizo Yamawaki ,  Yukinori Akamine ,  Masahiro Ito

IPC分类号： H04B17/00

CPC分类号： H04B1/30

摘要： When generating an RF test signal for mismatch calibration for receiver in order to calibrate reception mismatch of an I-phase signal and a Q-phase signal that are output from demodulated signal processing circuits coupled to mixers for receiving, a Tx VCO avoids covering the higher frequency of an RF received signal in an FDD system. An RF test signal generating unit generates, in a calibration mode of a mismatch calibration for receiver circuit, the RF test signal by using an oscillation output signal of the Tx VCO and other circuits, and supplies the same to the mixers for receiving via a switch. The RF test signal has a frequency within an RF reception frequency band that is higher than that of an RF transmission signal with the maximum frequency band of multiband radio frequency communications. By switching the switch in a reception mode, an output of a low-noise amplifier that amplifies the RF received signal received by an antenna is supplied to each of the mixers for receiving.

摘要翻译： 为了校准从耦合到混频器进行接收的解调信号处理电路输出的I相信号和Q相信号的接收不匹配，为接收机生成用于失配校准的RF测试信号时，Tx VCO避免覆盖较高的 FDD系统中RF接收信号的频率。 RF测试信号产生单元通过使用Tx VCO和其它电路的振荡输出信号在接收机电路的不匹配校准的校准模式中产生RF测试信号，并将其提供给用于经由开关接收的混频器 。 RF测试信号具有比具有多频带无线电频率通信的最大频带的RF传输信号的RF接收频带内的频率。 通过在接收模式下切换开关，将放大天线接收到的RF接收信号的低噪声放大器的输出提供给每个混频器进行接收。

公开(公告)号：US07366489B2

公开(公告)日：2008-04-29

申请号：US10742813

申请日：2003-12-23

申请人： Satoshi Tanaka ,  Kazuo Watanabe ,  Masao Hotta ,  Toyohiko Hongo ,  Taizo Yamawaki ,  Masumi Kasahara ,  Kumiko Takikawa

发明人： Satoshi Tanaka ,  Kazuo Watanabe ,  Masao Hotta ,  Toyohiko Hongo ,  Taizo Yamawaki ,  Masumi Kasahara ,  Kumiko Takikawa

IPC分类号： H04B1/06 ,  H04B1/10

CPC分类号： H04B1/30 ,  H03D2200/0047 ,  H03K21/16

摘要： A transceiver suitable for larger scale of integration employs direct conversion reception for reducing the number of filters. Also, the number of VCOs is reduced by utilizing dividers to supply a receiver and a transmitter with locally oscillated signals at an RF band. Dividers each having a fixed division ratio are used for generating locally oscillated signals for the receiver, while a divider having a switchable division ratio are used for generating the locally oscillated signal for the transmitter. In addition, a variable gain amplifier for baseband signal is provided with a DC offset voltage detector and a DC offset canceling circuit for supporting high speed data communications to accomplish fast cancellation of a DC offset by eliminating intervention of a filter within a feedback loop for offset cancellation.

摘要翻译： 适合较大规模集成的收发器采用直接转换接收，以减少滤波器的数量。 此外，通过利用分频器来为RF频带提供具有本地振荡信号的接收机和发射机来减少VCO的数量。 每个具有固定分频比的分频器用于产生用于接收机的局部振荡信号，而具有可切换分频比的分频器用于产生用于发射机的本地振荡信号。 另外，用于基带信号的可变增益放大器设置有DC偏移电压检测器和DC偏移消除电路，用于支持高速数据通信以通过消除用于偏移的反馈回路内的滤波器的干涉来实现DC偏移的快速消除 消除。

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。