Antenna Geometries and Circuit Theory in Electrical Engineering
Explore the concepts of antennas in electrical engineering including definitions, circuit theory, equivalent circuits, and a review of antenna geometries such as wire radiators, aperture antennas, printed antennas, leaky-wave antennas, reflector antennas, and lens antennas. Learn about the fundamental principles and applications of antennas in transmitting and receiving electromagnetic waves.
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Presentation Transcript
Class : 3rd-year First Lecture Faculty of Engineering, Electrical Engineering Department Definition and circuit theory description By: Asst. Prof. Dr. Malik Jasim Asst. Lect. Mustafa Mahdi 1
Antenna: An antenna: is defining as a metallic device (rod or wire) for radiating or receiving electromagnetic waves. In other words, the antenna is transitional structure between free-space and guiding device
The equivalent circuit of an antenna: Radiating antenna Receiving antenna Vg - voltage-source generator Zg - impedance of the generator Zc - impedance of the transmission lines; Rrad - radiation resistance RL -loss resistance Antenna impedance : (??= ????+ ?? + ???) jXA - antenna reactance.
General review of antenna geometries: - 1.Single-element radiators A. Wire radiators B. Aperture antennas C. Printed antennas D. Leaky-wave antennas E. Reflector antennas F. 2. Antenna arrays Lens antennas
