Here's what you should know:
Patterns, directivity, gain measurements, and set-up criteria. ANTENNA AND WAVE PROPAGATION antenna and wave propagation by kd prasad google books
Performance Analysis of Directional Antennas and Their Impact on Sky-Wave Propagation [Your Name] References: Based on principles from Antennas and Wave Propagation by K.D. Prasad. I. Abstract Here's what you should know: Patterns, directivity, gain