Draytek ANT-1205B Stick WiFi Antenna with RP-SMA Connector, IEEE 802.11a

The Rextron High-Gain Dual-Band Antenna is a replacement aerial (antenna) for any wireless access point. It provides up to a 5dBi gain (vs. the 2 or 3 dBi standard aerial supplied with the product). The antenna can increase coverage in your environment, creating a stronger signal for your WiFi coverage. A high-gain aerial achieves this by creating a narrower and therefore more concentrated radiation pattern. It is still an omnidirectional aerial, i.e. signal radiates in all directions (360 degrees) perpendicular to the aerial's length. Aerial gain occurs by concentrating the beam - reducing its vertical angle, so for best all-round coverage (above and below as well as to the sides), use the aerials included with your router.

High-Gain Dual-Band Aerials