Designed to radiate along the axis of the array ( 180∘180 raised to the composed with power
Radiation Direction ---> | | | | | |Reflector |Driven |Director |Director |Director | |Element |1 |2 |3 | | | | | Microstrip Patch Antenna
┌─────────────────────────────────────────┐ │ Radio Wave Propagation Modes │ └────────────────────┬────────────────────┘ │ ┌─────────────────────────┼─────────────────────────┐ ▼ ▼ ▼ Ground Wave Sky Wave Space Wave (Surface Propagation) (Ionospheric Reflection) (Line-of-Sight) f < 2 MHz 3 MHz - 30 MHz f > 30 MHz 1. Ground (Surface) Wave Propagation Below (e.g., VLF, LF, and MF bands for AM broadcasting). antenna and wave propagation by kd prasad ppt full
Etotal=Eelement×AFcap E sub t o t a l end-sub equals cap E sub e l e m e n t end-sub cross cap A cap F
) : Ratio of the radiation intensity in a given direction to the average radiation intensity. : The maximum directive gain of the antenna. Slide 4: Fundamental Antenna Parameters (Part 2) Antenna Efficiency ( Designed to radiate along the axis of the
), resulting in maximum radiation perpendicular to the axis of the array.
Element 1 Element 2 Element 3 Element N (○) ------------ (○) ------------ (○) ---- ···· ---- (○) | d | d | | I₀∠0° I₀∠α I₀∠2α I₀∠(N-1)α The normalized Array Factor for an -element ULA with spacing : The maximum directive gain of the antenna
K.D. Prasad’s Antenna and Wave Propagation is considered a canonical text because of its systematic approach to electromagnetic theory. Unlike many contemporary texts that jump immediately into application, Prasad’s work is rooted in the gradual escalation of concepts—from Maxwell’s equations to the design of complex antenna arrays.
Use the PPTs to understand how these concepts apply to cellular networks, radar, and satellite communication. Where to Find Materials Scribd : Look for scanned notes and book summaries. Academia.edu : Access structured lecture notes.
It's important to understand that a single, official file named "antenna and wave propagation by kd prasad ppt full" is not something widely distributed online. Textbook publishers typically don't release comprehensive slide decks for every chapter, and many "full PPT" websites are often unreliable or misleading.
Wave propagation refers to the way electromagnetic waves travel through a medium, such as air or space. The main characteristics of wave propagation include: