In layman's terms, antenna gain refers to the ability to focus on the scattered radio frequency (RF) waves on the narrow and useful plane, thereby increasing the signal strength. The antenna gain is expressed as decibel (DB) and under other conditions, the higher-gain antenna will be able to use weaker signals more effectively than a lower antenna. Under more practical cases, consumers living outside the scope of their local network broadcasts will obtain a better receiving effect than a low-gain antenna.
The antenna design determines the efficiency of the antenna in collecting design receiving. The high-gain antenna uses additional components to pull into the radio frequency wave, focusing the radiation into a stream of the "flat" trajectory. In a rough analogy, considering a magnifying glass that focuses on scattered sunlight into a beam, which greatly enhances the power of the beam. The component plays the same role, focusing on the ability of scattered radiation frequency waves to cause signal strength or antenna gain gain.
People who have difficulty receiving wireless broadcasts may benefit from the high-gain antenna, although it cannot create miracles. Regional terrain can reduce the broadcast range by blocking or scattering radio frequency waves.
You may want to know that if a high-gain antenna can provide better receiving results, why not buy a high-gain antenna? The answer is dual. High-gain antennas are usually more expensive than low-gain models, so if you don't need it, you can save some money. In addition, the higher the gain, the more important the antenna points to the radio you want to receive. If it deviates a few degrees, it may not receive the signal at all. Therefore, if an antenna gain is not required, it is best to buy antenna that can accommodate a wider receiving angle, so that it is not so important to point it to the accurate position.
In addition to height, gain and scope, some antennas can also withstand extreme weather; for those who are under bad climate, this is a good investment.
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