I have a passive antenna that covers a wide bandwidth (1.25 - 2.45GHz, RHCP, omnidirectional) which I'd like to re-purpose for Galileo signal detection. I don't have an option to get an application specific antenna - I'm stuck with this one.
Here is one port insertion loss measurement for the antenna:
I can see that at Galileo E1 frequency it is not very well matched (~5.5dB insertion loss). Additionally, there's no LNA and no out of band rejection for that frequency. My access to the antenna is after a few meters (~2.2dB) of cabling. If I add an LNA and/or filtering, I have a feeling I could re-purpose this antenna for Galileo/GPS and connect it to a commercial receiver.
Are there any practical limitations when using broadband antennas for GPS applications? What are the challenges I might face when selecting a receiver with this antenna?
Thanks! Any help would be much appreciated!