I have some question regarding using titanium as antenna. I have to think about an implantable tracking system for animals. One of the requirements is that it should be as small as possible. Other requirements is that it should has good range and transmission power, while being super low power.
For this I am thinking of using CC430F5137 uC that has embedded radio (433MHz) and wake on radio capabilities. The design should also have accelerometer and temperature sensor as well. This components added together, will exceed the maximum length and diameter of the capsule I have in mind which is around 2(w) by 8(l) cm dimensions.
So basically it will be a battery and PCB inside some sort of bio safe capsule. This forces using an external antenna, basically a piece of wire that exits the capsule. Since the only metal I know that does not react with body is titanium, what would be your thoughts about this?
The length would be something around 8cm (considering 1/8 of wavelength)
Also it comes the problem of soldering the titanium on PCB which I believe it is not possible, unless I think of a socket that antenna goes in and fixes in place.
please let me know what you think.