3) Two half-wave dipole antennas, each with impedance of 750, are connected in parallel through a pair of transmission lines, and the combination is connected to a feed transmission line as shown below: Zin- 0.32- -0.22 0.22- 75 92 (Antenna) 195 Ω (Antenna) Assume that the pair of transmission lines (blue lines) has a characteristic impedance of 500, and the feed transmission line (red line) has a characteristic impedance of 1000. a. Find the input impedance at 0.32 away from the pair of antennas. b. Assume that a generator with V=250e/T/2 and Zg = 500 is connected at 0.32 away from the pair of antennas. How much average power is delivered to each antenna?

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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.