会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明申请
    • Transmission circuit and communication device
    • 传输电路和通信设备
    • US20080031384A1
    • 2008-02-07
    • US11882251
    • 2007-07-31
    • Yoshihiro HaraKatsuhiko MoriokaKaoru Ishida
    • Yoshihiro HaraKatsuhiko MoriokaKaoru Ishida
    • H03C1/62H03C3/02H04L27/04
    • H04L27/368H03C5/00H04L27/361
    • Provided is a transmission circuit 1 which is capable of precisely compensating for an offset characteristic of an amplitude modulation section 15, and operating with low distortion and high efficiency over a wide output electric power range. A signal generation section 11 outputs an amplitude signal and an angle modulation signal. An amplitude amplifying section 14 inputs, to the amplitude modulation section 15, a signal corresponding to a magnitude of the amplitude signal having been inputted. The amplitude modulation section 15 amplitude-modulates the angle modulation signal with the signal inputted from the amplitude amplifying section 14, and outputs a resultant signal as a modulation signal. The power measuring section 18 measures an output power of the amplitude modulation section 15. An offset compensation section 12 reads an offset compensation value from a memory 13 in accordance with the output power of the amplitude modulation section 15, and adds the read offset compensation value to the amplitude signal.
    • 提供了能够精确地补偿振幅调制部15的偏移特性并且在宽输出功率范围内以低失真和高效率工作的发送电路1。 信号生成部11输出振幅信号和角度调制信号。 振幅放大部分14向幅度调制部分15输入与已经输入的幅度信号的大小对应的信号。 振幅调制部15利用从幅度放大部14输入的信号对角度调制信号进行振幅调制,并输出合成信号作为调制信号。 功率测量部18测量振幅调制部15的输出功率。 偏移补偿部分12根据幅度调制部分15的输出功率从存储器13读取偏移补偿值,并将读出的偏移补偿值与振幅信号相加。
    • 5. 发明授权
    • Transmission circuit and communication device
    • 传输电路和通信设备
    • US07940859B2
    • 2011-05-10
    • US11882251
    • 2007-07-31
    • Yoshihiro HaraKatsuhiko MoriokaKaoru Ishida
    • Yoshihiro HaraKatsuhiko MoriokaKaoru Ishida
    • H03C1/52H04L27/04
    • H04L27/368H03C5/00H04L27/361
    • A transmission circuit is capable of precisely compensating for an offset characteristic of an amplitude modulation section, and operating with low distortion and high efficiency over a wide output electric power range. A signal generation section outputs an amplitude signal and an angle modulation signal. An amplitude amplifying section inputs, to the amplitude modulation section, a signal corresponding to a magnitude of the amplitude signal having been inputted. The amplitude modulation section amplitude-modulates the angle modulation signal with the signal inputted from the amplitude amplifying section, and outputs a resultant signal as a modulation signal. The power measuring section measures an output power of the amplitude modulation section. An offset compensation section reads an offset compensation value from a memory in accordance with the output power of the amplitude modulation section, and adds the read offset compensation value to the amplitude signal.
    • 传输电路能够精确地补偿幅度调制部分的偏移特性,并且在宽输出功率范围内以低失真和高效率工作。 信号生成部输出振幅信号和角度调制信号。 幅度放大部分向幅度调制部分输入与已经输入的幅度信号的大小对应的信号。 振幅调制部利用从幅度放大部输入的信号对角度调制信号进行振幅调制,并输出合成信号作为调制信号。 功率测量部分测量幅度调制部分的输出功率。 偏移补偿部根据振幅调制部的输出功率从存储器读出偏移补偿值,并将读取的偏移补偿值与振幅信号相加。
    • 6. 发明授权
    • Wireless communications device
    • 无线通信设备
    • US07639990B2
    • 2009-12-29
    • US11435893
    • 2006-05-18
    • Katsuhiko Morioka
    • Katsuhiko Morioka
    • H04B1/44
    • H04B1/0483H04B1/406
    • A wireless communications device comprises a common amplifier for amplifying a plurality of high-frequency signals of different communications systems, a plurality of signal channels provided subsequent to the common amplifier, each of the plurality of high-frequency signals being passed through the respective signal channels, and a switch circuit provided between the plurality of signal channels and the common amplifier, for connecting the common amplifier and one of the plurality of signal channels. Each of the plurality of signal channels is provided with a power amplifier having power amplification efficiency optimal with respect to a high-frequency signal passed through the signal channel.
    • 无线通信设备包括用于放大不同通信系统的多个高频信号的公共放大器,设置在公共放大器之后的多个信号通道,多个高频信号中的每一个通过相应的信号通道 以及设置在所述多个信号通道和所述公共放大器之间的开关电路,用于连接所述公共放大器和所述多个信号通道中的一个。 多个信号通道中的每一个都具有功率放大器功率放大效率相对于通过信号通道的高频信号而最佳。