) : Derived by integrating the Poynting vector over a closed sphere:
E-plane, H-plane, and Pyramidal horns used as feeds for satellite dishes due to their high gain and impedance matching capabilities.
: Focuses on the wave propagation aspects frequently cited in K.D. Prasad's curriculum. antenna and wave propagation by kd prasad ppt full
The PPT (PowerPoint Presentation) full of "Antenna and Wave Propagation" by KD Prasad is a comprehensive resource that provides a detailed overview of the topic. The PPT covers a wide range of topics, including:
Space waves travel through the lowest layer of the atmosphere (troposphere) via direct line-of-sight (LoS) or tropospheric scatter. Because the Earth curves, the maximum line-of-sight distance ( ) between a transmitting antenna of height and a receiving antenna of height is bounded by the horizon formula: ) : Derived by integrating the Poynting vector
The apparent height from which a reflected wave seems to return, assuming no bending occurred in the medium.
). It usually consists of a main lobe, side lobes, and back lobes. Radiation Intensity ( The PPT (PowerPoint Presentation) full of "Antenna and
) features a sinusoidal current distribution that drops to zero at the ends and peaks in the center. , which offers an excellent match to standard coaxial cables. Directivity: 3. Quarter-Wave Monopole A quarter-wave monopole (
The Principle of Pattern Multiplication with Examples
A hypothetical, lossless antenna that radiates power equally in all directions. It serves as a universal reference point for measuring antenna gain. Directivity (
The principle stating that the total field of an array of identical elements is the product of the field of a single element and the array factor. Unit 4: VHF, UHF, and Microwave Antennas (Slides 46–60)