Hello
I've a query about antennas. I'm building something that I need to be really small, about 1.2cm cubed, and which includes a 433MHz ASK transmitter. I'm using a very small transmitter chip, very basic, from Radiotronix, which is about 6mm x 4mm. It all works fine but I have a problem with the antenna. I had hoped that I could use enamelled wire of the right length (i.e. about 17cm) and wrap it round itself, so it can fit in the 1.2cm cube. Unfortunately this drastically reduces the range so it is really unuseable. This is all very rough and ready, and I'm wondering whether I might get a better result if I made a kind of trace antenna on a PCB, and if so if there is one pattern that might work better than another. Or is there another solution altogether? I know that a higher frequency transmitter would need a shorter antenna but I don't know if there is anything out there as small as I have got.
Thanks
I've a query about antennas. I'm building something that I need to be really small, about 1.2cm cubed, and which includes a 433MHz ASK transmitter. I'm using a very small transmitter chip, very basic, from Radiotronix, which is about 6mm x 4mm. It all works fine but I have a problem with the antenna. I had hoped that I could use enamelled wire of the right length (i.e. about 17cm) and wrap it round itself, so it can fit in the 1.2cm cube. Unfortunately this drastically reduces the range so it is really unuseable. This is all very rough and ready, and I'm wondering whether I might get a better result if I made a kind of trace antenna on a PCB, and if so if there is one pattern that might work better than another. Or is there another solution altogether? I know that a higher frequency transmitter would need a shorter antenna but I don't know if there is anything out there as small as I have got.
Thanks