kae_jolie
Full Member level 4
- Joined
- Oct 13, 2006
- Messages
- 234
- Helped
- 9
- Reputation
- 18
- Reaction score
- 8
- Trophy points
- 1,298
- Activity points
- 3,158
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.
