Page 262 - Antennas for Base Stations in Wireless Communications

New Unidirectional Antennas for Various Wireless Base Stations 235

Simulated Measured
Eco Eco
Ex Ex
0 Hx 0 Hx
0 330 30 Hco 0 330 30 Hco
−10 −10
−20 300 60 −20 300 60
−30 −30
−40 270 90 −40 270 90 1.83 GHz
−30 −30
−20 240 120 −20 240 120
−10 −10
0 210 150 0 210 150
180 180

Eco Eco
Ex Ex
0 Hx 0 Hx
0 330 30 Hco 0 330 30 Hco
−10 −10
−20 300 60 −20 300 60
−30 −30
−40 270 90 −40 270 90 2.50 GHz
−30 −30
−20 240 120 −20 240 120
−10 −10
0 210 150 0 210 150
180 180

Eco Eco
Ex Ex
0 Hx 0 Hx
0 330 30 Hco 0 330 30 Hco
−10 −10
−20 300 60 −20 300 60
−30 −30
−40 270 90 −40 270 90 3.50 GHz
−30 −30
−20 240 120 −20 240 120
−10 −10
0 210 150 0 210 150
180 180
Figure 6.32 Radiation pattern of a square-cap coupled fed wideband unidirectional
antenna