- Joined Aug 17, 2019
I got the module of FM tuner (picture above) working properly with Arduino. This is small 1x1 cm PCB containing only RDA5807M chip (I2C control) and quartz crystal.
The problem I have is poor sensitivity because of antenna. At this moment I just solder piece of wire to ANT pin.
Poor sensitivity exist due to the temporary antenna. At the moment I just soldered a piece of wire to the ANT pin.
I'm not a specialist in antennas, hence I wanted to ask more experienced colleagues.
The same chip is used in many smartphones, where the headphone cable is used as the antenna. I use it in the Arduino project as a "desktop" device. I tried to connect the telescopic antenna to the pin but it did not increase the sensitivity of the tuner. At least to a small extent.
So how should the antenna be properly connected and what other (most likely) elements to use so that the whole device has the same good sensitivity as in a smartphone.
Anyone can help me?