An air$-$filiea rectangular waveguide nas Clrnenstoned a$-6$ cm and cm$.$ The signal frequency iS $6$ GHz$.$ Compute the following in

the T Mll mode

$($iii$)$

$($iv$)$

$($v$)$

Cut$-$off frequency

Cut$-$off wave number

Cut$-$off wavelength

Guide phase constant

Guide attenuation constant