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[原创] ADI ADRF5547双通道RF(3.7-5.3 GHz)前端解决方案

关键词:无线通信 时分复用(TDD) MIMO ADRF5547

时间:2019-10-29 11:19:36       来源:中电网

ADI公司的ADRF5547是双通道集成RF前端多芯片模块,工作频率3.7- 5.3 GHz,具有2 级 LNA 和高功率 SPDT 开关,片内偏置和匹配,单电源供电,高增益模式4.6 GHz 时为 33 dB(典型值),低增益模式4.6 GHz 时为 18 dB(典型值),噪声指数高增益模式时4.6 GHz 时为 1.6 dB(典型值),低增益模式4.6 GHz 时为1.6 dB(典型值),LTE 平均功率 (9 dB PAR)为40 dBm,OIP3为31 dBm(典型值),插入损耗4.6 GHz 时为 0.5 dB(典型值),高增益模式电源电流5 V 时为 86 mA(典型值),低增益模式电源电流5 V 时为 36 mA(典型值),关断模式电源电流5 V 时为 12 mA(典型值).正逻辑控制,主要用在无线基础设备,TDD多输入和多输出(MIMO)和有源天线系统,基于TDD的通信系统.本文介绍了ADRF5547主要特性,功能框图, 应用电路图,评估板ADRF5547-EVALZ主要特性,测试建立图,电路图,材料清单和PCB装配图.

The ADRF5547 is a dual-channel, integrated RF, front end multichip module designed for time division duplexing (TDD) applications that operates from 3.7 GHz to 5.3 GHz. The ADRF5547 is configured in dual channels with a cascading two-stage low noise amplifier (LNA) and a high power silicon, single-pole, double-throw (SPDT) switch.

In high gain mode, the cascaded, two-stage LNA and switch offer a low noise figure of 1.6 dB and high gain of 33 dB at 4.6 GHz with an output third order intercept point (OIP3) of 31 dBm (typical).

In low gain mode, one stage of the two-stage LNAs is in bypass, providing 18 dB gain at lower current of 36 mA. In power-down mode, the LNAs are turned off and the devi..

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