"Massi" ha scritto nel messaggio
...
Thanks a lot for all the answers,
I'm doing some tests in laboratory with a network analyzer and will let
you
know asap what I will find.
Massimo

I have done some tests with trasmission line builded in FR4 (30cm long, 2cm
wide), according to them I have the following notes:
VSWR MICROSTRIP 50 OHM
13.56 MHz = 1.0129
1 GHz = 1.0457
3 GHz = 1.0994
VSWR COPLANAR WAVEGUIDE 50 OHM
13.56 MHz = 1.0250
1 GHz = 1.1698
3 GHz = 1.3500
VSWR STRIPLINE 50 OHM
13.56 MHz = 1.0315
1 GHz = 1.0269
3 GHz = 1.2665

LOSS MICROSTRIP 50 OHM
13.56 MHz = - 0.03360 dB
1 GHz = - 0.83380 dB
3 GHz = - 2.40590 dB
LOSS COPLANAR WAVEGUIDE 50 OHM
13.56 MHz = - 0.04660 dB
1 GHz = - 0.84300 dB
3 GHz = - 2.12640 dB
LOSS STRIPLINE 50 OHM
13.56 MHz = - 0.06340 dB
1 GHz = - 1.00830 dB
3 GHz = - 3.05160 dB

bye,
Massimo