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21. 发明授权

US07366489B2 Mobile communication apparatus 有权
标题翻译：移动通信装置
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。

22. 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。

23. 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。

24. 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。

25. 发明申请

US20060068726A1 Transmitter and radio communication terminal using the same 审中-公开
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：US20060068726A1
公开(公告)日：2006-03-30
申请号：US11210734
申请日：2005-08-25
申请人： Taizo Yamawaki
发明人： Taizo Yamawaki
IPC分类号： H01Q11/12
CPC分类号： H03F1/32 , H03C1/06 , H03D3/007 , H03F1/0205 , H03F3/24 , H03F3/45286 , H03F2200/294 , H03F2203/45481 , H03F2203/45544 , H03F2203/45704 , H03G3/3047
摘要： A radio communication terminal is provided, in which the noise reduction and the cost reduction of a dual-mode transmitter handling two types of modulation systems of a non-constant amplitude modulation and a constant amplitude modulation can be realized. By applying a phase synchronization loop to the output signal of an orthogonal modulator and a synchronization loop to an envelope, a low-noise transmitter adapted to the constant amplitude modulation and the non-constant amplitude modulation is realized. Moreover, by preparing a variable gain amplifier for realizing the envelope modulation and a variable gain amplifier for realizing the output power control of a power amplifier, it becomes possible to use a general purpose PA with a fixed gain, and therefore, the cost reduction of the radio communication terminal can be achieved.
摘要翻译：提供了一种无线电通信终端，其中可以实现处理非恒定幅度调制和恒定幅度调制的两种调制系统的双模式发射机的降噪和降低成本。通过将相位同步环路应用于正交调制器的输出信号和向包络线的同步环路，实现了适用于恒定幅度调制和非恒定幅度调制的低噪声发射器。此外，通过制备用于实现包络调制的可变增益放大器和用于实现功率放大器的输出功率控制的可变增益放大器，可以使用具有固定增益的通用PA，因此成本降低可以实现无线通信终端。

26. 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。

27. 发明申请

US20050221855A1 Radio frequency device and mobile communication terminal using the same 失效
标题翻译：射频设备和移动通信终端使用相同
公开(公告)号：US20050221855A1
公开(公告)日：2005-10-06
申请号：US11028925
申请日：2005-01-05
申请人： Akira Kuriyama , Taizo Yamawaki , Satoshi Tanaka
发明人： Akira Kuriyama , Taizo Yamawaki , Satoshi Tanaka
IPC分类号： H04B1/44 , H03F3/60 , H04B1/04 , 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，并允许匹配网络耦合以及不包括双工器并允许匹配网络与天线耦合的第二路径111。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。

28. 发明授权

US06930549B2 Variable gain amplifier for use in communications 失效
标题翻译：用于通信的可变增益放大器
公开(公告)号：US06930549B2
公开(公告)日：2005-08-16
申请号：US10446859
申请日：2003-05-29
申请人： Hisayoshi Kajiwara , Kenji Toyota , Kazuhiko Hikasa , Taizo Yamawaki
发明人： Hisayoshi Kajiwara , Kenji Toyota , Kazuhiko Hikasa , Taizo Yamawaki
IPC分类号： H03G1/00 , H03G3/30 , H04B1/04 , H03F3/45
CPC分类号： H03G3/3042 , H03G1/0052
摘要： A variable gain amplifier of low amplitude distortion, and low noise, having a large variable range, is provided. A variable gain differential amplifier that controls a gain by use of bias current is used as each of unit amplifiers (VGAs) making up the variable gain amplifier. A large variable gain range is obtained by series-connecting a plurality of the variable gain differential amplifiers. An attenuator is installed on the input side of the unit amplifier (VGA) at least in the initial stage. By doing so, it becomes possible to prevent amplitude distortion from occurring to the respective VGAs. An attenuator utilizing voltage division by capacitors, generating no noise, is used for lowering noise. Further, the variable gain amplifier is provided with a fixed gain amplifier installed in the final stage as necessary in order to obtain a total gain as desired. With the use of the variable gain amplifier as a variable gain amplifier for output power control of a polar loop transmitter, an excellent function for output power control can be achieved without causing significant deterioration in distortion characteristic and noise characteristic thereof.
摘要翻译：提供了具有较大可变范围的低振幅失真和低噪声的可变增益放大器。使用通过使用偏置电流来控制增益的可变增益差分放大器被用作构成可变增益放大器的单位放大器（VGA）中的每一个。通过串联连接多个可变增益差分放大器来获得大的可变增益范围。至少在初始阶段，衰减器安装在单元放大器（VGA）的输入侧。通过这样做，可以防止对各个VGA产生振幅失真。使用由电容器分压而不产生噪声的衰减器用于降低噪声。此外，可变增益放大器设置有必要时安装在最后级的固定增益放大器，以便根据需要获得总增益。通过使用可变增益放大器作为用于极性环路发送器的输出功率控制的可变增益放大器，可以实现输出功率控制的优异功能，而不会引起失真特性和噪声特性的显着劣化。

29. 发明授权

US08396430B2 Semiconductor integrated circuit device and wireless communication system 有权
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：US08396430B2
公开(公告)日：2013-03-12
申请号：US13114340
申请日：2011-05-24
申请人： Taizo Yamawaki , Tomonori Tanoue , Kazuaki Hori
发明人： Taizo Yamawaki , Tomonori Tanoue , Kazuaki Hori
IPC分类号： H04B1/44
CPC分类号： H04B1/006 , H04B1/52
摘要： Disclosed are a semiconductor integrated circuit device and a wireless communication system that are capable of improving reception sensitivity. The wireless communication system includes, for instance, a first duplexer, a second duplexer, a first low-noise amplifier circuit, and a second low-noise amplifier circuit. A transmission band compliant with a communication standard is split into two segments for use, namely, low- and high-frequency transmission bands. A reception band compliant with the communication standard is split into two segments for use, namely, low- and high-frequency reception bands. The first duplexer uses the low-frequency transmission band and low-frequency reception band as passbands. The second duplexer uses the high-frequency transmission band and high-frequency reception band as passbands. A signal received from the first duplexer and a signal received from the second duplexer are respectively amplified by the first and the second low-noise amplifier circuits, which are respectively provided to handle such signals.
摘要翻译：公开了能够提高接收灵敏度的半导体集成电路装置和无线通信系统。无线通信系统包括例如第一双工器，第二双工器，第一低噪声放大器电路和第二低噪声放大器电路。符合通信标准的传输频带被分成两个段，即低频和高频传输频带。符合通信标准的接收频段被分为两段供低频和高频接收频段使用。第一双工器使用低频传输频带和低频接收频带作为通带。第二双工器使用高频传输频带和高频接收频带作为通带。从第一双工器接收的信号和从第二双工器接收的信号分别由分别提供以处理这种信号的第一和第二低噪声放大器电路放大。

30. 发明授权

US08359067B2 Radio frequency device and mobile communication terminal using the same 失效
标题翻译：射频设备和移动通信终端使用相同
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。

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