润泰天线去耦 www.rimtai.com Proper decoupling: the key to good vertical antenna design 砞璸やぱ絬闽龄: 続讽癶寐 |[pic] | |FIGURE 1 | |Electric field in vicinity of | |an | |isolated center-driven dipole | |antenna | | | The need for decoupling a vertical antenna from its coaxial feedline can be appreciated by referring to Figure 1. Antennas which are driven by 2- conductor transmission lines always have two terminals, insulated from each other, between which the high frequency AC voltage generated by the transmitter is impressed. Figure 1 shows a typical center driven dipole antenna, with terminals a-b, across which the AC voltage generated by the transmitter is connected. During eac……