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Forum 直接变频接收机设计可实现多标准/多频带运行
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  • 频带
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直接变频接收机设计可实现多标准/多频带运行

铁丝19
铁丝19 over 14 years ago

作者:Rakesh Soni,Eric Newman,ADI公司

 

 

美国国家半导体为无线通信基站(BTS)及无线通信基础设施应用提供一系列的高性能信号路径解决方案,适用于 2G、2.5G、3G 及 4G 移动电话、微波回传及智能天线系统。为应付日益增长及成熟的2G及2,5G (GSM / GPRS / EDGE / cdmaOne / IS-95, PDC, PCS and iDEN)系统之要求,美国国家半导体以PowerWise技术开发出更全面和更高能效的解决方案,这些PowerWise产品包括数据转换器(ADC及DAC)、高速放大器、定时及计时解决方案及电源管理产品等。由于不断发展的3G系统(由UMTS 到 HSDPA、HSUPA, HSPA、HSOPA;由cdmaONE 到 cdma2000 1xRTT、 EV-DO、EV-DV)以及其它新建立的系统均需提供更高数据传送率和更高的话音能力,使设计要求更高性能及更省电的信号路径解决方案。配合OFDMA和长期演进项目(LTE)在4G方面的发展,美国国家半导体推出更具能源效益和更高性能的信号路径及电源转换解决方案。无论将无线电机集成到基站或远程射频转发器(RRH),均可按照CPRI、OBSAI或以太网(IEEE-1588)标准并通过一个特殊接口设备来连接,美国国家半导体所提供的高速数据接口解决方案具备有每秒传送千兆(GSPS)的速率和毫瓦级的功耗。

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