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    • 1. 发明授权
    • Semiconductor integrated circuit device and wireless communication system
    • 半导体集成电路器件和无线通信系统
    • US08396430B2
    • 2013-03-12
    • US13114340
    • 2011-05-24
    • Taizo YamawakiTomonori TanoueKazuaki Hori
    • Taizo YamawakiTomonori TanoueKazuaki Hori
    • H04B1/44
    • H04B1/006H04B1/52
    • 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.
    • 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。