December 19th 06, 09:20 PM
posted to rec.radio.amateur.antenna
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First recorded activity by RadioBanter: Dec 2006
Posts: 44
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Rectangular waveguide
wrote in message
ups.com...
In air-filled rectangular waveguide, what is the meaning by " the
operating frequency is to be at least 25% greater than the cutoff
frequency of the dominant mode"?
Can show it in mathematically?
Thanks
Laura
Try this:
http://www.microwaves101.com/encyclo...ath.cfm#cutoff
Regards,
Frank
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