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    High frequency semiconductor integrated circuit and radio communication system
    4.
    发明授权
    High frequency semiconductor integrated circuit and radio communication system 失效
    高频半导体集成电路和无线电通信系统

    公开(公告)号：US07020444B2

    公开(公告)日：2006-03-28

    申请号：US10372922

    申请日：2003-02-26

    申请人： Jiro Shinbo ,  Hirotaka Oosawa ,  Noriyuki Kurakami ,  Masumi Kasahara ,  Robert Astle Henshaw

    发明人： Jiro Shinbo ,  Hirotaka Oosawa ,  Noriyuki Kurakami ,  Masumi Kasahara ,  Robert Astle Henshaw

    IPC分类号： H04B1/40

    CPC分类号： H03L7/10 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1265 ,  H03B2201/025 ,  H03D3/008 ,  H03J1/005 ,  H03J2200/10 ,  H03L7/0891 ,  H03L7/099 ,  H03L7/193

    摘要： A communication semiconductor integrated circuit has an oscillator circuit forming part of a transmission PLL circuit fabricated on a single semiconductor chip together with an oscillator circuit forming part of a reception PLL circuit and an oscillator circuit for an intermediate frequency. The oscillator circuit for the transmission PLL circuit is configured to be operable in a plurality of bands. The communication semiconductor integrated circuit also comprises a circuit for measuring the oscillating frequency of the oscillator circuit for the transmission PLL circuit, and a storage circuit for storing the result of measurement made by the measuring circuit. A band to be used by the oscillator circuit for the transmission PLL circuit is determined based on values for setting the oscillating frequencies of the oscillator circuit forming part of the reception PLL circuit and the intermediate frequency oscillator circuit, and the result of measurement stored in the storage circuit.

    摘要翻译： 通信半导体集成电路具有形成在单个半导体芯片上的传输PLL电路的一部分的振荡器电路以及形成接收PLL电路的一部分的振荡器电路和用于中频的振荡器电路。 用于传输PLL电路的振荡器电路被配置为可在多个频带中操作。 通信半导体集成电路还包括用于测量用于传输PLL电路的振荡器电路的振荡频率的电路和用于存储由测量电路进行的测量结果的存储电路。 用于传输PLL电路的振荡电路使用的频带基于用于设置构成接收PLL电路和中频振荡器电路的一部分的振荡电路的振荡频率的值和存储在传输PLL电路中的测量结果的值来确定 存储电路。

    Communication semiconductor integrated circuit and radio communication system
    5.
    发明授权
    Communication semiconductor integrated circuit and radio communication system 有权
    通信半导体集成电路和无线电通信系统

    公开(公告)号：US07313369B2

    公开(公告)日：2007-12-25

    申请号：US11122062

    申请日：2005-05-05

    申请人： Hirotaka Oosawa ,  Jiro Shinbo ,  Noriyuki Kurakami ,  Masumi Kasahara ,  Robert Astle Henshaw

    发明人： Hirotaka Oosawa ,  Jiro Shinbo ,  Noriyuki Kurakami ,  Masumi Kasahara ,  Robert Astle Henshaw

    IPC分类号： H04B1/40

    CPC分类号： H03D3/008 ,  H03J1/005 ,  H03J7/06 ,  H03L7/0891 ,  H03L7/10 ,  H03L7/193

    摘要： A communication semiconductor integrated circuit has an oscillator circuit forming part of a transmission PLL circuit fabricated on a single semiconductor chip together with an oscillator circuit forming part of a reception PLL circuit and an oscillator circuit for an intermediate frequency. The oscillator circuit forming part of the transmission PLL circuit is configured to be operable in a plurality of bands. A circuit for measuring the oscillating frequency of the oscillator circuit forming part of the transmission PLL circuit is also used for measuring the oscillating frequency of the oscillator circuit forming part of the reception PLL circuit or for measuring the oscillating frequency of the oscillator circuit for the intermediate frequency.

    摘要翻译： 通信半导体集成电路具有形成在单个半导体芯片上的传输PLL电路的一部分的振荡器电路以及形成接收PLL电路的一部分的振荡器电路和用于中频的振荡器电路。 形成传输PLL电路的一部分的振荡器电路被配置为可在多个频带中操作。 用于测量形成传输PLL电路的一部分的振荡电路的振荡频率的电路也用于测量形成接收PLL电路的一部分的振荡器电路的振荡频率或用于测量中间件的振荡器电路的振荡频率 频率。

    Communication semiconductor integrated circuit device and a wireless communication system
    6.
    发明授权
    Communication semiconductor integrated circuit device and a wireless communication system 有权
    通信半导体集成电路器件和无线通信系统

    公开(公告)号：US07148764B2

    公开(公告)日：2006-12-12

    申请号：US10495611

    申请日：2002-11-13

    申请人： Masumi Kasahara ,  Hirotaka Osawa ,  Robert Astle Henshaw

    发明人： Masumi Kasahara ,  Hirotaka Osawa ,  Robert Astle Henshaw

    IPC分类号： H03B1/00

    CPC分类号： H03L7/187 ,  H03L7/099

    摘要： In a communication semiconductor integrated circuit device, an oscillator (VCO 10) of a PLL circuit can operate in a plurality of frequency bands. With a control voltage (Vc) of the oscillator fixed to a predetermined value (VDC), an oscillation frequency of the oscillator is measured for each band to be stored in a storage (18). When the PLL operates, a setting value to specify a band is compared with the measured frequency values stored in the storage. As a result of the comparison, a band to be actually used by the oscillator is determined.

    摘要翻译： 在通信半导体集成电路器件中，PLL电路的振荡器（VCO10）可以在多个频带中工作。 在振荡器的控制电压（Vc）固定为预定值（VDC）的情况下，对要存储在存储器（18）中的每个频带测量振荡器的振荡频率。 当PLL操作时，将指定频带的设定值与存储在存储器中的测量频率值进行比较。 作为比较的结果，确定振荡器实际使用的频带。

    Direct-conversion transmitting circuit and integrated transmitting/receiving circuit
    10.
    发明授权
    Direct-conversion transmitting circuit and integrated transmitting/receiving circuit 有权
    直接转换发射电路和集成发射/接收电路

    公开(公告)号：US07116950B2

    公开(公告)日：2006-10-03

    申请号：US10073029

    申请日：2002-02-12

    申请人： Satoshi Tanaka ,  Masamichi Tanabe ,  Yasuyuki Okuma ,  Taizo Yamawaki ,  Koichi Yahagi ,  Hiroaki Matsui ,  Robert Astle Henshaw

    发明人： Satoshi Tanaka ,  Masamichi Tanabe ,  Yasuyuki Okuma ,  Taizo Yamawaki ,  Koichi Yahagi ,  Hiroaki Matsui ,  Robert Astle Henshaw

    IPC分类号： H04B1/04

    CPC分类号： H03D7/1433 ,  H03C3/40 ,  H03D7/145 ,  H03D7/1458 ,  H03D2200/0025 ,  H03D2200/0033 ,  H03D2200/0043 ,  H03D2200/0047

    摘要： A transmitter is provided which includes a transmitting circuit that does not require a high-performance low noise VCO restricting cost reduction thereof and that can reduce the number of parts without requiring an RF filter. A direct conversion that does not require a transmission VCO is applied to the transmitting circuit. In order to achieve noise reduction in a receiving band, low-pass filters are provided a IQ input sections of a modulator that converts IQ signals into RF signals. In comparison with a conventional transmitter using offset PLL, an external VCO required in addition to an RF integrated circuit, a power amplifier, and a front end circuit is reduced. Even in current transistor performance, by using a filter having rapid waveform characteristics such as a SAW more inexpensive than the VCO, or the like, it is possible to provide a GSM/GSM 1800/GSM1900 triple band transmitter.

    摘要翻译： 提供一种发送器，其包括不需要高性能低噪声VCO来限制其成本降低并且可以减少部件数量而不需要RF滤波器的发送电路。 将不需要传输VCO的直接转换应用于发送电路。 为了实现接收频带中的噪声降低，提供了将IQ信号转换成RF信号的调制器的IQ输入部分的低通滤波器。 与使用偏移PLL的常规发射机相比，减少了RF集成电路，功率放大器和前端电路之外需要的外部VCO。 即使在目前的晶体管性能中，通过使用具有比VCO更便宜的SAW等具有快速波形特性的滤波器等，也可以提供GSM / GSM 1800 / GSM1900三频发射机。