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:

Antenna One Port Insertion Loss Measurement

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!

  • \$\begingroup\$ Just in case you weren't aware: On September 21, 2003, after 14 years in space and 8 years in the Jovian system, Galileo's mission was terminated by sending it into Jupiter's atmosphere at a speed of over 48 kilometers per second (30 mi/s), eliminating the possibility of contaminating local moons with terrestrial bacteria \$\endgroup\$ – Andy aka Mar 20 at 11:07
  • \$\begingroup\$ @Andyaka The question is in reference to the Galileo GNSS constellation: m.esa.int/Our_Activities/Navigation/Galileo/Galileo_satellites \$\endgroup\$ – Blair Fonville Mar 20 at 11:23
  • \$\begingroup\$ You guys are just spoiling my fun LOL \$\endgroup\$ – Andy aka Mar 20 at 11:32
  • \$\begingroup\$ @Andyaka Sorry! It did cross my mind that you may have been joking. \$\endgroup\$ – Blair Fonville Mar 20 at 11:38
  • \$\begingroup\$ What is the link-margin of that RF system? assuming ZERO cable losses and ZERO antenna gain? does poor link-margin merely show up in time-to-lock? \$\endgroup\$ – analogsystemsrf Mar 20 at 13:50

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