What's the difference between K and SMA connectors?
I'm looking forward to your help.
K connectors have better quality and could be used up to 46GHz, when standard SMA could be used up to 26GHz
http://www.wa1mba.org/rfconn.htm
Are they of same dimensions?
Yes, K connector it is compatible with SMA
They are mechanical compatible, but their dimensions are not exactly the same:
the inner diameter of the external conductor of the coaxial structure is 2.92 mm for the K connector and 3.5 mm for the sma connector.
In addition the dielectric material isn't the same:
SMA --> teflon
K --> air
They are not electricatly compatible.
Obviously these mismatch effectes could be often neglected .
They are mechanical compatible, but their dimensions are not exactly the same:
the inner diameter of the external conductor of the coaxial structure is 2.92 mm for the K connector and 3.5 mm for the sma connector.