amirsde
Newbie level 5

Hi all
As you know we have modes in wave guides
For example in parallel plate TM mode we have
h=nΠ/b , fc=n/2b(µε)^0.5
my question is that how do this modes change ?
We have n=1 , fc=1/2b(µε)^1/2
n=2 , fc=1/b(µε)^1/2 and so on
They change with my operation frequency ?
for example 100Mhz-200Mhz --> mode1
200Mhz-300Mhz --> mode 2 ?
Or not ?
Also how can I know the wave guide is on which mode on special frequency ?
As you know we have modes in wave guides
For example in parallel plate TM mode we have
h=nΠ/b , fc=n/2b(µε)^0.5
my question is that how do this modes change ?
We have n=1 , fc=1/2b(µε)^1/2
n=2 , fc=1/b(µε)^1/2 and so on
They change with my operation frequency ?
for example 100Mhz-200Mhz --> mode1
200Mhz-300Mhz --> mode 2 ?
Or not ?
Also how can I know the wave guide is on which mode on special frequency ?