A dipole antenna is two pieces of wire, rod, or tubing that are one quarter. While still retaining the length between the ends of half a wavelength, an additional length of conductor connects the two ends together i. The length of the total wire, which is being used as a dipole, equals half of the wavelength i. The half wave dipole is formed from a conducting element which is. Pdf design of dual feeding fullwave dipole antenna for vhf. Half wave dipole and yagiuda antenna study material exams. The halfwave dipole, also called a doublet, is formally known as the hertz antenna. A half wave dipole wire antenna is introduced which is operating at 1. Design of a half wave dipole antenna using cst studio suite. As the name implies, the half wave dipole is a half wavelength long. Simple half wave dipole antenna analysis for wireless applications by cst microwave studio article pdf available in international journal of computer applications 947. Half wave antenna free download as powerpoint presentation. Halfwave dipole antenna for gsm applications techrepublic. The g0kya efhw an endfed half wave monoband hf antenna.
The length if the antenna is much smaller than the half wavelength. Pdf simple halfwave dipole antenna analysis for wireless. This is the shortest resonant length that can be used for a resonant dipole. A more practical dipole is the halfwave dipole referring to the fact that it is. Malaysia design of dual feeding full wave dipole antenna for vhf khedher a hmood, s. The logperiodic halfwave dipole antenna is driven from one end with spacings between adjacent dipoles so that the waves radiated in the. Half wave dipole antenna for satellite communication. Pdf in this paper, a simple halfwave dipole antenna has been designed and analyzed for wireless applications.
This is a special case of the dipole antenna, and one of the most commonly used. Halfwave dipole antenna for gsm applications citeseerx. The half wave dipole, also called a doublet, is formally known as the hertz antenna. Both these facts are a result of the electrically small nature of the antenna. Simple half wave dipole antenna analysis for wireless applications by cst microwave studio. A dipole antenna is two pieces of wire, rod, or tubing that are onequarter wavelength long at the operating resonant frequency. The dipole antenna is cut and bent for effective radiation.
Received by the antenna dipole antenna one of the most widely used antenna types is the half wave dipole. A dipole antenna approximately one half wavelength long is the half wave dipole antenna. Homemade half wave dipole antenne for 70 mhz youtube. A more practical dipole is the half wave dipole referring to the fact that it is 2 long. This would be the sortest variant of the dipole antenna. What i really wanted to do was have a vertical half wave dipole, but the problem is that while the impedance at the centre of a dipole is about 5075 ohms, and very easy to match to coax, an endfed half wave has a very high impedance indeed, around 20003000 ohms. The radiation pattern and basic properties impedance, directivity are presented along with plots, graphs of the radiation pattern. Used where a singlefrequency application is needed. This results in an almost real value of the input impedance, which can be easily matched to an input source having a real source impedance for maximum power transfer. The half wave dipole hertz antenna the dipole antenna dates back to the early rf experiments of. The half wave dipole is the most popular version of the dipole antenna or aerial. Half wave dipole and yagiuda antenna study material.