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Definition: A type of antenna which is formed by bending of a coil or uniform wire in the form of loop is known as a loop antenna. Basically, in loop antenna, the RF current-carrying coil is bent to various shapes like circle, square, rectangle, ellipse, etc.
A loop antenna is a coil carrying radio frequency current. It may be in any shape such as circular, rectangular, triangular, square or hexagonal according to the designer’s convenience. Loop antennas are of two types. Large loop antennas. Small loop antennas. Large loop antennas are also called as resonant antennas.
A loop antenna is a radio antenna consisting of a loop or coil of wire, tubing, or other electrical conductor, that for transmitting is usually fed by a balanced power source or for receiving feeds a balanced load. Within this physical description there are two (possibly three) distinct types:
Oct 26, 2023 · A loop antenna is a type of radio antenna that is comprised of a loop or coil of wire, tubing, or other conducting material. The loop can vary in size, shape, and orientation, which all influence the antenna’s performance.
The small loop antenna is explained, and the loop antenna is described. The electric and magnetic fields radiated from these antennas are presented. This antenna radiates the way a magnetic dipole would.
A loop antenna has directional properties whereas a simple vertical antenna not has the same. The induced e.m.f around the loop must be equal to the difference between the two vertical sidesonly. No e.m.f is produced in case of horizontal arms of a loop antenna.
Nov 28, 2023 · The full wave loop forms a second basic building block of antennas, along with the the half wave dipole. In fact, the two are similar in many ways: the full wave loop can be thought of two dipoles with the ends connected together, or a folded dipole opened up into a 2-dimensional shape.
Loop Antenna Theory. Loop antennas can be analyzed as several separate types, with very different characteristics: small receiving loops, less than about 0.1 wavelengths, where the current is approximately constant around the loop. These have a broadside null and maximum radiation off the edges.
Dec 2, 2023 · Theory of Large Loop Antennas. last updated 2 December 2023. While 1 wavelength loops radiate broadside to the plane of the antennas, larger sizes tend to radiate more off the edges, and may have a broadside null. With larger loops (in terms of wavelengths), the patterns can have multiple lobes and nulls.
A loop antenna consists of a wire loop of arbitrary shape fed by an input current Iin. A circular loop, as shown in Figure 6.15, is the shape most commonly used. The radius of the loop, R, could be electrically small or large.
