ESP8266 Developer Zone The Official ESP8266 Forum 2017-04-10T16:29:14+08:00 https://bbs.espressif.com:443/feed.php?f=6&t=3751 2017-04-10T16:29:14+08:00 2017-04-10T16:29:14+08:00 https://bbs.espressif.com:443/viewtopic.php?t=3751&p=12166#p12166 <![CDATA[Re: What is the real Impedance of ESP8266 LNA?]]>
Sorry for the inconvenience, we will revise it.

This is correct.

in the ducument "esp8266-hardware matching guide", it says "The impedance of ESP8266 PA output end is 39+j6 Ω, so the matched impedance is 39-j6Ω (from antenna to the chip)."


Thanks for your interest in ESP8266!

Statistics: Posted by ESP_Faye — Mon Apr 10, 2017 4:29 pm

]]> 2017-04-08T22:52:01+08:00 2017-04-08T22:52:01+08:00 https://bbs.espressif.com:443/viewtopic.php?t=3751&p=12124#p12124 <![CDATA[What is the real Impedance of ESP8266 LNA?]]>
In the datasheet 0a-esp8266-datasheet document, it says "LNA, RF Antenna Interface. Chip Output Impedance=50Ω No matching required. It is suggested to retain the π-type matching network to match the antenna."

However, in the ducument "esp8266-hardware matching guide", it says "The impedance of ESP8266 PA output end is 39+j6 Ω, so the matched impedance is 39-j6Ω (from antenna to the chip)."

Which one is correct ? or any explanations ?

Thanks,

YimingLi

Statistics: Posted by Guest — Sat Apr 08, 2017 10:52 pm

]]>