I am measuring the return loss at common port of the switch (RFC) with RF1- RFC path is activated. Return loss at RFC is -2 dB for frequencies 23 GHz - 26 GHz which is quite different from what is given in datasheet. Then I looked at the impedance (Resistance) between the central pin and outer conductor of the 2.92 mm connector at RFC and shows it is short circuited. I checked the impedance at all other ports also,which also gives me zero resistance. I was wondering whether it should be like that? If yes what is the reason?
In addition to this insertion loss for all ports are -15 dB , which is also different from datasheet.
Looking forward to hear from you soon,