Antenna Basics

Antenna Basics:

Antenna Characteristics : The following Antenna Basics Characteristics isolated from surfaces which will alter or change their radiation patterns and efficiency. Current and Voltage Distribution: When an RF signal voltage is applied at some point …


Antenna Coupling : Antenna Coupling : Low and medium frequency antennas are the ones least likely to be of resonant effective height and are therefore the least likely to have purely resistive …


Antenna Definition : The Antenna Definition is a quick review of impedance matching (basic transformer theory) and resonant circuits. It was pointed out that maximum power transfer could be achieved only when …


Directional High Frequency Antenna : Directional High Frequency Antenna are likely to differ from lower-frequency ones for two reasons. These are the HF transmission/reception requirements and the ability to meet them. Antenna Basics …


Effects of Antenna Height : At low and medium frequencies, where wavelengths are long, it often becomes im­practicable to use an antenna of resonant length. The vertical antennas used at those frequencies …


Effects of Ground on Antenna Performance : The Effects of Ground on Antenna Performance on a detailed discussion of the interaction (see Figure 9-11). Ungrounded Antennas: As was know, when a radiation source is placed …


Horn Antenna Design : Horn Antenna Design – As we know, a waveguide is capable of radiating energy into open space if it is suitably excited at one end and open at …


Lens Antenna : The paraboloid reflector is one example of how optical principles may be applied to microwave lens antenna, and the Lens Antenna is yet another. Antenna Basics …


Parabolic Antenna : The Parabolic Antenna is a plane curve, defined as the locus of a point which moves so that its distance from another point (called the focus) plus its distance …


Radiation Pattern of Antenna : The important terms and definitions used in connection with antennas and their Radiation Pattern of Antenna are Antenna Gain and Effective Radiated Power: Certain types of antennas focus their …


Wideband Antenna Types : It is often desirable to have an antenna capable of operating over a wide frequency range. This may occur because a number of widely spaced channels are used, …


Antenna Basics

Updated: April 29, 2020 — 5:26 pm