Page 245 - Antennas for Base Stations in Wireless Communications
P. 245

218     Chapter Six

                                0                                 0
                         30           330                  30            330

                    60                     300         60                     300


                  90                         270     90                        270
                               −40 −30 −20  −10  0               −40 −30 −20  −10  0

                   120                     240        120                     240

                        150           210                  150           210
                               180                                180
                            (a) 1.37 GHz                       (b) 1.37 GHz

                                0                                 0
                         30           330                  30            330

                    60                     300         60                     300


                   90                        270     90                         270
                               −40 −30 −20  −10  0               −40 −30 −20  −10  0

                    120                    240        120                     240

                        150           210                  150           210
                               180                                180
                            (a) 2.17 GHz                       (b) 2.17 GHz

                                0                                 0
                         30           330                  30            330

                    60                      300        60                     300


                   90                        270     90                         270
                               −40 −30 −20  −10  0               −40 −30 −20  −10  0

                    120                     240       120                     240

                        150           210                  150           210
                               180                                180
                            (a) 2.97 GHz                       (b) 2.97 GHz

                                      E-plane Co-polar  H-plane Co-polar
                                      E-plane cross polar  H-plane cross polar
                  Figure 6.12  (a) Simulated and (b) measured radiation patterns of the patch antenna
                                                        50
                  fed by a vertical plate pair at different frequencies  (© 2007 IEEE)
   240   241   242   243   244   245   246   247   248   249   250