Hi,
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
What is the real Impedance of ESP8266 LNA?
Re: What is the real Impedance of ESP8266 LNA?
Postby ESP_Faye » Mon Apr 10, 2017 4:29 pm
Hi,
Sorry for the inconvenience, we will revise it.
This is correct.
Thanks for your interest in ESP8266!
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!
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