Why Do We Need Wi-fi Antennas For Long Range Internet Connectivity?

Long range Wi-Fi antennas are the driving force behind long range wireless networks

. An antenna is a device that transmits and receives electromagnetic signals. A transmission antenna converts alternating voltage electrical signals into electromagnetic waves and a receiver antenna converts electromagnetic signals back to electrical signals. A long range Wi-Fi antenna is used for providing Internet connectivity, or wireless connectivity, between two geographically separated, distant points. Long range antennas can pick up network signals from distant networks.

Most Wi-Fi antennas have dBi as their standard measure rather than dBd. Dipole reference antennas work at 2.14 dBi that corresponds to 0 dBd. Higher values of gain indicate an antenna capable of working at higher levels of power, which usually results in greater range.

The Wi-Fi antennas attached to the wireless routers are omni-directional. The omni-directional antennas transmit and receive data from all the sides, i.e. the range of these antennas is 360 degrees. If the router is kept near the walls or some obstruction, the 360 degree full range will be obstructed and you will utilize only a part of the receiver strength. Also, you can upgrade the antenna of your router to a highly directional antenna. The directional antennas receive signals only in a particular direction. With the directional antennas, you can direct the signal according to your needs. This is one way of increasing the range of wireless network.

Wi-Fi antennas encounter several problems in rural environments, primarily landscape interference and signal reception difficulty resulting from long-range transmission. To compensate for these factors, rural users must select an antenna designed for long-range transmission as well as their location. Directional antennas radiate signals in a focused signal, making them ideal for areas that allow for a direct line of sight with the receiver. Omni-directional antennas; due to their signal pattern, are more suited to areas with uneven terrain and varying elevation.

Directional Wi-Fi antennas are most often seen in outdoor settings, particularly when bridging between two buildings. However, they can also assist with indoor communications, especially in crowded environments where signals may have to bounce off of many objects before reaching their destinations. The trick lies in pinpointing the client's location and orienting the access point's directional antenna for maximum reception, much like aligning a satellite dish with a geosynchronous satellite.

Wi-Fi antennas are available in a wide variety of mounting styles to suit the needs of diverse projects. From low-profile ceiling, corner, patch and surface mounts to omni-directional and magnet mounts, the range of designs allows for great flexibility when creating and installing Wi-Fi networks.

by: Chris Cowper

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