On my mini quadcopter I have a 2.4 GHz quarter wavelength monopole antenna that is close to defective (due to crashes and therelike) and that I need to replace. This antenna is used to recieve control input and send back telemetry data, so it is sending and receiving at the same time.
The ground plane of the quadcopter does not seem to be too good, so I was thinking about replacing the monopole antenna with a dipole antenna, e.g. from an old WIFI router.
Is it possible to use a dipole antenna in a monopole design? Can I just connect the second half of the dipole antenna to ground?
If I build the dipole antenna myself from two pieces of wire, do both halves of the antenna need to be aligned directly in one line or can I place the halves apart from each other to where they are convenient on the board?
Is there anything else I need to know about that topic?