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

). It usually consists of a main lobe, side lobes, and back lobes. Radiation Intensity (

Antenna & Wave Propagation – K. D. Prasad

Ensuring the antenna matches the transmission line to prevent power loss. 2. Antenna Arrays

Once an electromagnetic wave detaches from an antenna, it travels through Earth's environments via different propagation modes depending on its operational frequency.

A flaring waveguide structure used to smoothly transition waves from a transmission line into free space. It provides moderate directivity and low losses at microwave frequencies.