LTC5583設(shè)計(jì)的雙路6GHz RMS功率檢測(cè)技術(shù)
本文介紹了LTC5583主要特性,方框圖, 單端輸入配置和差分輸入配置測(cè)試電路圖以及單端輸入配置圖和差分輸入配置圖.
Linear公司的LTC5583是匹配的雙路6GHz RMS功率檢測(cè)器,能測(cè)量?jī)陕稟C信號(hào),動(dòng)態(tài)范圍從-59dBm 到4dBm,頻率范圍從40MHz 到6GHz,整個(gè)溫度范圍精度為±0.5dB,兩路的匹配輸出小于1.25dB,快速響應(yīng)時(shí)間,上升時(shí)間140ns,主要用在VSWR監(jiān)視器,MIMO發(fā)送功率控制,基站功率放大器控制,發(fā)送和接收增益控制以及RF儀表.
LTC5583主要特性:
Frequency Range: 40MHz to 6GHz
Linear Dynamic Range: Up to 60dB
±0.5dB (Typ) Accuracy Over Temperature
40dB Channel-to-Channel Isolation at 2GHz Even with Single-Ended RF Inputs
Matched Dual-Channel Outputs: 1.25dB (Typ)
Single-Ended RF Inputs—No Transformer Required
Accurate RMS Power Measurement of High Crest
Factor Modulated Waveforms
Difference Output Provides VSWR Measurement
Fast Envelope Detector Outputs
Fast Response Time: 140ns Rise Time
Small 4mm ??4mm QFN24 Package
LTC5583應(yīng)用:
VSWR Monitor
MIMO Transmit Power Control
Basestation PA Control
Transmit and Receive Gain Control
RF Instrumentation
圖1.LTC5583方框圖
圖2.LTC5583測(cè)試電路圖:40MHz-3GHz,單端輸入配置
圖3.LTC5583測(cè)試電路圖:2GHz-6GHz,差分輸入配置
圖4.LTC5583單端輸入配置圖
圖5.LTC5583差分輸入配置圖
圖6.LTC5583評(píng)估板單端輸入配置PCB布局圖(頂層)
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