esp32-cam ai-thinker, antenna, ext.antenna, your experience
Posted: Sat Apr 24, 2021 5:15 pm
i have several esp32-cam modules.
they all have this pcd-antenna and an external connector via switchable resistor select.
recently i ordered one of these standard external stick-antenna with short cable to connect to the boards
antenna-socket.
my wifi performance increased with the external antenna.(mounted on a metal housing)
i am wondering, maybe one can just glue a 3.1cm Lambda/4 wire vertical (isolated) atop of the metal processor casing (ground plane) and connect it to the antenna output (onboard disconnected), to achieve the same as an external. ? (of corse this is not production style)
in other words, antenna experiments
Has anybody made some evaluation or experiments regarding antenna performance?
Is the onboard pcb-antenna in any way directional?
hoping for a vivid discussion
they all have this pcd-antenna and an external connector via switchable resistor select.
recently i ordered one of these standard external stick-antenna with short cable to connect to the boards
antenna-socket.
my wifi performance increased with the external antenna.(mounted on a metal housing)
i am wondering, maybe one can just glue a 3.1cm Lambda/4 wire vertical (isolated) atop of the metal processor casing (ground plane) and connect it to the antenna output (onboard disconnected), to achieve the same as an external. ? (of corse this is not production style)
in other words, antenna experiments
Has anybody made some evaluation or experiments regarding antenna performance?
Is the onboard pcb-antenna in any way directional?
hoping for a vivid discussion