Analysis of the Radiation Resistance and Gain of Full-Wave Dipole Antenna for Different Feeding Design

This paper demonstrates the analysis of antenna pattern and gain for different designs of full-wave dipole antenna feed-ing techniques. Seven such techniques were studied and analyzed; symmetrical dual feeding in phase, symmetrical dual feeding out of phase, asymmetrical dual feeding in phase, asymmetrical dual feeding out of phase, symmetrical triple feeding in phase and symmetrical triple feeding out of phase. Symmetrical dual feeding in phase produced high gain as compared to the single and center-fed antennas. An improvement of about 3 to 3.5 dB was achieved comparing to cen-ter tap fed and off center fed. It was found that an asymmetrical dual feeding in-phase provides good performance, con-sidering the directivity, pattern, and input impedance. A 2.46 dB gain has been obtained. It was found that a symmetri-cal triple feeding provides an overall best performance with respect to gain, radiation pattern, beam width and input impedance