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介绍了一种应用于下一代移动通信系统的高性能宽带射频收发信机的实现.本射频收发信机工作在6～6.3GHz频段,信道带宽达到100MHz,工作在时分双工模式并支持IMT-advanced系统采用的多输入多输出(MIMO)技术.为了获得最佳的性能,采用了经典的超外差结构.详细介绍了系统关键部件如低噪声放大器、功率放大器以及本地振荡器的设计问题.测试结果表明,射频收发信机的最大线性输出功率大于23dBm,低噪声放大器的增益和噪声系数分别为大约24dB和小于1dB.此外,误差矢量幅度(EVM)的测试结果表明实现的射频收发信机的性能远超过LTE-advanced系统的要求.采用最大8×8的MIMO配置,本射频收发信机在现场试验中支持超过1Gbit/s的数据传输率.
An implementation of a high performance wideband RF transceiver for next generation mobile communication system is introduced.The RF transceiver works in 6 ~ 6.3GHz frequency band with channel bandwidth up to 100MHz and works in TDD mode and supports IMT- The advanced system uses multiple input multiple output (MIMO) technology. For best performance, the classic superheterodyne structure is used. The design issues for key system components such as LNAs, power amplifiers and local oscillators are described in detail. The test results show that the maximum linear output power of RF transceiver is more than 23dBm, the gain and noise figure of low-noise amplifier are about 24dB and less than 1dB, respectively.In addition, the test results of error vector magnitude (EVM) show that the realized RF transceiver Of the performance far exceeds the requirements of LTE-advanced system.Use the maximum 8 × 8 MIMO configuration, the RF transceiver in the field test to support more than 1Gbit / s data transfer rate.