7.3 A Yagi aerial consists of a dipole of 73 + j0 22 imped- ance and a parasitic element of 81 +j108 2 impedance. The mutual impedance between the two elements is 40 - j30 2. Calculate the ratio of the powers radiated in the directions dipole to parasitic and parasitic to dipole. Hence state whether the parasitic element is a reflector or a director.

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Q: 7.3 A Yagi aerial consists of a dipole of 73 + j0 2 imped- ance and a parasitic element of 81 +j108…

A: A parasitic element refers to an unintended or unwanted component that affects the performance of a…

Q: 7.3 A Yagi aerial consists of a dipole of 73 + j0 22 imped- ance and a parasitic element of 81 +…

A: A parasitic element refers to an unintended or unwanted component that affects the performance of a…

Antenna Characteristics

The antenna is an important concept in the domain of electronics and communication engineering. An antenna forms an integral part of many commonly used devices such as wireless modems, routers, game controllers, mobile phones, bluetooth devices, and so on. In simple terms, any wireless communication makes use of antennas to serve the purpose. An antenna, also known by the term 'arial', is an electrical device that converts electrical signals into electromagnetic waves or electromagnetic waves into electrical signals. An antenna contains a transmission line usually made up of co-axial cable, it then receives the signals and converts them into electromagnetic waves, which are then transmitted via space into their required destination. A communication system essentially makes use of two antennas, a transmission antenna, which converts electrical signals into electromagnetic waves, and a receiving antenna, which receives the electromagnetic waves and converts them back into electrical signals.