How to tune my POTY Patch Antenna

Hello

Below a sweep of my POTY with a cheap Spectrum Analyser from China.

I would like to 'move' the lowest deep towards 2'405 Mhz (now at 2.55 Ghz)

How should I proceed?

Thank you

Daniel

Hi Uli

Just google for 'Simple Spectrum Analyser D6 with Trace Generator'. Its about 50 USD and results so far on other antennas were satisfying. I recommend to use the 'SNA Sharp' software from F4HTQ (simple to use as a starting point).

73!

Daniel

Quote from G0MJW

Why do you want to do that? The idea is the wanted band is between the two resonances to get good circular polarisation. The response looks fine to me. The highest resonance is at the cut off corners so bending slightly towards the ground plane might work or perhaps a bit of kapton tape.

Mike

Thank you Mike for your post. Good lesson learned!