The largest antenna supported by an ESP8266 is typically around 3.5 cm in length.
The largest antenna supported by an ESP8266 is typically around 3.5 cm in length.
An antenna is typically a passive component. A 100W transmitter will only send the energy you provide. As others mentioned, a higher gain design would be preferable. If you're transitioning from the PCB antenna on those ESP8266 boards, an external antenna should improve performance noticeably. You might connect two high-gain units using a Wilkinson divider, achieving better results than a single omnidirectional antenna while maintaining coverage in two directions. Be mindful of placement and cable length to prevent signal problems. What are your specific goals? Reaching 200 meters with Wi-Fi is quite challenging; a LORA system might be more suitable for your needs.