Hi,
I'm trying to design a replacement antenna for a GSM phone. One that will cover 850MHZ, 900MHZ, 1800MHZ and 1900MHZ (Quad band GSM).
Doing a bit of reading on the internet I came up with an antenna that is made out of a piece of wire at 1/4 length of the average frequency (1350MHZ). The antenna is just over 5CM (2 inches) long.
It seem to work fine and I get good reception with the phone but here are my questions.
- Do I need to take anything else into consideration? Like the material the antenna is made of?
- Did I even do my calculations right?
Thanks, zoti