How long is an 80 meter loop antenna?

Length of a full-wave 80-meter loop is about 270 feet long (1005 divided by frequency in MHz) or about 67 feet per side.

What is the impedance of a full wave loop?

100 ohms
Loop Antennas The feed point impedance of a full wave loop antenna is theoretically in the vicinity of 100 ohms and requires a 2:1 impedance transformer to match with 50 ohm line or a 1.5:1 transformer to match with 75 ohm cable.

What is a wave loop antenna?

A loop antenna is a radio antenna consisting of a loop or coil of wire, tubing receiving predominantly the magnetic component of the electromagnetic wave, or other electrical conductor usually fed by a balanced source or feeding a balanced load. These antennas are used for both transmission and reception.

What is the gain of a loop antenna?

The designed loop antenna is self-matched to the 50-ohm impedance of a source and provides a high directional gain of 8.2 dBi. The antenna gain is increased to 10.0 dBi by using a dual multi-loop geometry. Sample antennas are designed and manufactured for operating at 2250 MHz.

Why are loop antennas used?

Loop antennas feature simplicity, low cost and versatility. They may have various shapes: circular, triangular, square, elliptical, etc. They are widely used in communication links up to the microwave bands (up to ≈ 3 GHz). They are also used as electromagnetic (EM) field probes in the microwave bands.

What are the applications of loop antenna?

Applications of Loop Antenna Aircraft direction finders. In radio receivers for receiving high-frequency waves. Loop antennas are also used as ultra-high frequency transmitters. In RFID devices, to detect the position of the transmitter.

Why is a balun used in an antenna?

Radio and television To avoid feed line radiation, baluns are typically used as a form of common mode choke attached at the antenna feed point to prevent the coaxial cable from acting as an antenna and radiating power.