A waveguide of rectangular cross-section
width a=4 cm length b=5 cm
in which microwave signals of frequency f propagate solely in the TE10 mode.
There are limits on the frequencies of microwaves that can propagate. For very high frequencies in which landa (?) is much smaller than both a and b, many modes exist that can carry energy. Such modes do not exist when lamda(?) exceeds twice the dimension which is orthogonal to the field E.
i.e. no mode when (lamda)?> 2b (the short direction)
or when (lamda) ? >2a
Hello and thank you for posting your question to BrainMass.
The solution is attached below in two files. the files are identical in content, only differ in format. The first is in MS Word format, while the other is in Adobe pdf ...
A waveguide of rectangular cross section is examined.