Page 254 - Antennas for Base Stations in Wireless Communications
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New Unidirectional Antennas for Various Wireless Base Stations 227
0
0 330 30 Eco
Ex
−10 Hx
300 60 Hco
−20
−30 270 90
−20
240 120
−10
0 210 150
180 Freq = 1.75 GHz
0
0 330 30 Eco
Ex
−10 Hx
300 60 Hco
−20
−30 270 90
−20
240 120
−10
0 210 150
180 Freq = 2.50 GHz
0
0 330 30 Eco
Ex
−10 Hx
300 60 Hco
−20
−30 270 90
−20
240 120
−10
0 210 150
180 Freq = 3.0 GHz
Figure 6.21 Measured radiation pattern at frequencies of 1.75,
2.5, and 3.0 GHz 41
