The Bow-Tie Antenna. As a simple (and non-manufacturable) infinitely wideband antenna, let's look at an infinite bow-tie antenna: Figure 1. Infinitely Long Bow-Tie Antenna. In Figure 1, we have an antenna that is specified solely by the angle between the two metal pieces, D.
A corner reflector antenna is a type of directional antenna used at VHF and UHF frequencies. It was invented by John D. Kraus in 1938. It consists of a dipole driven element mounted in front of two flat rectangular reflecting screens joined at an angle, usually 90°.
A dipole antenna is the simplest type of radio antenna, consisting of a conductive wire rod that is half the length of the maximum wavelength the antenna is to generate. This wire rod is split in the middle, and the two sections are separated by an insulator.
We will go through the design of a real world Log Periodic Dipole Antenna, which was done by a Mr. Enrique Ayala, shown in Figure 3: Figure 3. Enrique holding his LPDA Antenna. The design is broken down as shown in Figure 4. We will use a total of N=25 elements (dipole antennas), with diameters of 0.077".
The most common type of microstrip antenna is the patch antenna. Antennas using patches as constitutive elements in an array are also possible. A patch antenna is a narrowband, wide- Antennas using patches as constitutive elements in an array are also possible.
A parabolic antenna is an antenna that uses a parabolic reflector, a curved surface with the cross-sectional shape of a parabola, to direct the radio waves. The most common form is shaped like a dish and is popularly called a dish antenna or parabolic dish.
Construction & Working of Short Dipole. The Short dipole is the dipole antenna having the length of its wire shorter than the wavelength. A voltage source is connected at one end while a dipole shape is made, i.e., the lines are terminated at the other end. The circuit diagram of a short dipole with length L is shown.
The small loop antenna is a closed loop as shown in Figure 1. These antennas have low radiation resistance and high reactance, so that their impedance is difficult to match to a transmitter. As a result, these antennas are most often used as receive antennas, where impedance mismatch loss can be tolerated.
A list of different antennas (antenna types) with links to detailed descriptions. Particularly, wire antennas such as the short dipole and half-wave dipole antennas are presented, aperture, patch, reflector and travelling wave antenna types are presented.