kae_jolie
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can I use a coax with inner conductor (probe) radius of 4mm to feed microstrip antenna? Is there a limit to how big of a coax you can use with a microstrip?
The bigger the probe radius, the better the bandwidth.
A related question, for probe inner radius 4mm and outer radius 9.16mm for air substrate, the cutoff frequency is 7.25 GHz. My microstrip is getting bandwidth between 4 and 10.5 GHz. So, shall I ignore all frequencies over 7.25 GHz since coax won't support them? So, my actual bandwidth become 4 to 7.25, instead?
Thanks.
The bigger the probe radius, the better the bandwidth.
A related question, for probe inner radius 4mm and outer radius 9.16mm for air substrate, the cutoff frequency is 7.25 GHz. My microstrip is getting bandwidth between 4 and 10.5 GHz. So, shall I ignore all frequencies over 7.25 GHz since coax won't support them? So, my actual bandwidth become 4 to 7.25, instead?
Thanks.