12/31/2022 0 Comments Microstrip antenna theoryA high-gain antenna will radiate most of its power in a particular direction, while a low-gain antenna will radiate over a wide angle. Gain is a parameter which measures the degree of directivity of the antenna’s radiation pattern. In two-way communication, the same antenna can be used for transmission and reception. Reception – collects electromagnetic energy from space. Transmission – radiates electromagnetic energy into space. An antenna may include components not connected to the transmitter, parabolic reflectors, horns, or parasitic elements, which serve to direct the radio waves into a beam or other desired radiation pattern.Īn antenna is an electrical conductor or system of conductors.An antenna is a circuit element that provides a transition form a guided wave on a transmission line to a free space wave and it provides for the collection of electromagnetic energy. Antennas can be designed to transmit and receive radio waves in all horizontal directions equally (omnidirectional antennas), or preferentially in a particular direction (directional, or high-gain, or “beam” antennas). Antennas are essential components of all radio equipment.Īn antenna is an array of conductors (elements), electrically connected to the receiver or transmitter. In reception, an antenna intercepts some of the power of a radio wave in order to produce an electric current at its terminals, that is applied to a receiver to be amplified. In transmission, a radio transmitter supplies an electric current to the antenna’s terminals, and the antenna radiates the energy from the current as electromagnetic waves (radio waves). In radio engineering, an antenna is the interface between radio waves propagating through space and electric currents moving in metal conductors, used with a transmitter or receiver.
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