Yagi Antenna 19 Element (Yagi in a drainpipe)!
Easy build yagi that gives at least 15dbi. A long range antenna for 2.4 ghz wifi 802.11 b/g/n frequencies. Yagi antennas exhibit a narrow beamwidth and high front to back ratios to help minimise any potential interference to and from other systems.
Templates : https://drive.google.com/folderview?id=0BzmJxxD-Z4B6ZmgtNzl2bzdvTDg&usp=sharing