ماژول تشخیص اتلاف و فاز AD8302 برای آشکارسازی اختلاف فاز استفاده می شود. تراشه AD8302 تراشه اصلی
بوده که وظیفه تبدیل اختلاف فاز به ولتاژ را برعهده دارد. نحوه کارکرد ماژول به این صورت است که اختلاف فاز سیگنال ورودی و خروجی را برای اندازه گیری به سطح ولتاژ تبدیل می کند. حداقل اختلاف فاز قابل تشخیص برای این آشکارساز 1 درجه می باشد.
Description:
The AD8302 is a fully integrated system for measuring gain/loss and phase in numerous receive, transmit, and instrumentation applications. It requires few external components and a single supply of 2.7 V–5.5 V. The ac-coupled input signals can range from –60 dBm to 0 dBm in a 50 Ω system, from low frequencies up to 2.7 GHz. The outputs provide an accurate measurement of either gain or loss over a ±30 dB range scaled to 30 mV/dB, and of phase over a 0°–180° range scaled to 10 mV/degree.
Both subsystems have an output bandwidth of 30 MHz, which may optionally be reduced by the addition of external filter capacitors. The AD8302 can be used in controller mode to force the gain and phase of a signal chain toward predetermined setpoints.
Applications:
RF/IF PA Linearization
Precise RF Power Control
Remote System Monitoring and Diagnostics
Return Loss/VSWR Measurements
Log Ratio Function for AC Signals
Features:
Measures Gain/Loss and Phase up to 2.7 GHz
Dual Demodulating Log Amps and Phase Detector
Input Range –60 dBm to 0 dBm in a 50ohm System
Accurate Gain Measurement Scaling (30 mV/dB) Typical Nonlinearity < 0.5 dB
Accurate Phase Measurement Scaling (10 mV/Degree) Typical Nonlinearity < 1 Degree
Measurement/Controller/Level Comparator Modes
Operates from Supply Voltages of 2.7 V–5.5 V
Stable 1.8 V Reference Voltage Output
Small Signal Envelope Bandwidth from DC to 30 MHz
Working voltage:5V