Many vendors provide positioning modules that support active antennas as well as ones that don't. I am using 4 positioning modules out of which 3 of them support active antennas and the other , CC4000 by TI , supports only passive antennas. To be honest I am testing modules for performance, in terms of TTFF for SGEE, CGEE and A-GPS.
Take a look if its necessary.
However all three claim to have almost same acquisition gains,about 143 dBi. But let me make my question general so that it will help more people.
For all 4 positioning modules that claim to have almost same acquisition gains, how would the antenna type (active/passive) effect its performance? I mean with a passive antenna if the module can have a acquisition gain of 143dBi why bother fixing it an active antenna?
Is an active antenna necessary for applications that have really short antenna cables(about 2-3cm)?
If I have gone wrong somewhere, kindly direct me.