Combined system of the microstrip antennas with different frequencies

The combined system with microstrip antennas (f 1 =1.85GHz; f 2 =3.7GHz, f 3 =1.75GHz, f 4 = 3.5GHz) is presented. The measurements of the prototype characteristics have shown that elevation angle of peak directivity of the antennas is oriented to zenith. Simulated S 11 at stated frequencies with the following minimum values of S 11 = −34dB, f=1.85GHz; S 11 =−21dB, f=3.7GHz; S 11 = −22dB, f=1.75GHz; S 11 =−19dB, f=3.5GHz are observed.