Microwave variable waveguide attenuator.
A new type of cutoff attenuator is presented. The attenuator works in the X-band in conditions of almost perfect matching. This means that the phase of the wave, which propagates inside the guide, does not suffer sensible variation in the passage between X- and K(u)-bands. Moreover, the attenuator works directly in the X-band, avoiding the passage between waveguide and cable, thus eliminating spurious effects due to this (double) passage. Experimental results of attenuation and dephasing using a prototype are also presented.
Fabeni
P
P
Nello Carrara Institute of Applied Physics, CNR Florence Research Area, Via Madonna del Piano 10, Sesto Fiorentino, Firenze, Italy.
Mugnai
D
D
Pazzi
G P
GP
Ranfagni
A
A