What is the coverage pattern of a semi-directional antenna?

The coverage pattern of a semi-directional antenna is accurately described as a 180-degree pattern. This means that the antenna can effectively transmit and receive signals over a broad area in one direction but does not cover the full 360 degrees around it. This design is particularly useful in applications where coverage is needed in a specific area, such as in point-to-point communication or when aiming to reduce interference from signals coming from the opposite direction.

Semi-directional antennas focus their energy in a half-circle, allowing for greater signal strength and quality in the intended coverage area compared to omnidirectional antennas, which cover the full 360 degrees. This means that while signals can be picked up and transmitted within that 180-degree arc, there is limited or no reception from angles outside of that range. Understanding the coverage pattern is crucial for network design and deployment, ensuring that antennas are placed strategically to maximize performance based on the specific layout and needs of the environment.