normally you get this attenuation
in the coupler - ie if you have a coupling factor
of let say 60dB you will have a signal 60dB
lower at your measuring output. In your example
150kW is the same as about 82dBm, with 60dB
coupling you will have 22dBm to your powermeter.
If this is to high you can easily attenuate
it with a small attenuator - or choose a higher
Remember that you could
be interested of a lower coupling factor for
reflected power measurement since the reflected
power, under normal conditions, is much lower
than forward power.
Thank you for your reply
May i ask, this coupler
that you mentioned, it should be built-in inside
commercially available power meters??