Multimedia Training Kit Antenna Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Multimedia Training Kit www.itrainonline.org Antenna In a wireless system, antennas are used to convert electrical waves into electromagnetic waves. Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Multimedia Training Kit www.itrainonline.org Antenna Gain The amount of energy the antenna can ‘boost’ the sent and received signal by is referred to as the antennas gain. Antenna gain is measured in: dBi - relative to an isotropic radiator dBd - relative to a dipole radiator The relationship between dBd and dBi can be represented in the following equation 0 dBd = 2.15 dBi In most cases, we use dBi as our antenna gain measurement. Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Multimedia Training Kit www.itrainonline.org Antenna Type Access Point Omnidirectional Sectoral Antenna Client or Point To Point Yagi Parabolic Reflector Tin Can Antenna Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Multimedia Training Kit www.itrainonline.org At the Access Point Omnidirectional Antenna Sectoral Antenna Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Omnidirectional Antenna Omnidirectional antennas have normally a 360-degree RF radiation from it. It is normally vertically polarized E-field. Omnidirectional antenna gain is normally low around 3 to 12 dBi. It is used for Point-to-Multi-Point (P2MP) links. It is quite good for 1-5 km coverage, especially if the client uses high gain directional antenna. Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Omnidirectional Antenna Ref: RFLinx http://www.rflinx.com. Model RFDG140 6.5 dBi. Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Omnidirectional Antenna Ref: YDI.COM http://www.ydi.com Mode: A2408, A2412-D, A2412-O gain 8 dBi and 12 dBi. Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Omnidirectional Antenna Ref: Evercom Taiwan http://www.evercom-ind.com Model OM88LNF 12dBi length 121cm Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Omnidirectional Antenna Ref: jbudisantosa@groundsys.com. Homebrew 6 dBi antenna 75 cm length Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Multimedia Training Kit www.itrainonline.org Sectoral Antenna Sectoral is used for the Access Point to serve a Point-to-Multi-Point (P2MP) links. Some sectoral antennas are vertically polarized, some horizontally polarized. It has higher gain of 10-19 dBi. Good for serving an area of 6-8 km distances. It has narrow horizontal beam-width to about 45-180 degree. Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Multimedia Training Kit www.itrainonline.org Sectoral Antenna Ref: YDI.COM Model A2.45LP14 vertically polarized 180 deg. sectoral antenna. Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Multimedia Training Kit www.itrainonline.org Sectoral Antenna Ref: Evercom Taiwan http://www.evercom-ind.com Model FG-Panel-56LB 19dBi Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Multimedia Training Kit www.itrainonline.org Sectoral Antenna Ref: johny@marscyber.net Homebrew 16 dBi sectoral. Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

At Client / Point To Point Parabolic Antenna Flat Panel Antenna Tincan Antenna Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Radome Enclosed Antenna Ref: YDI.COM http://www.ydi.com Model P2412 12dBi. Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Multimedia Training Kit www.itrainonline.org Yagi Antenna Ref: Kenbotong Communication Ltd. Taiwan http://www.kenbotong.com Model TDJ-2400C15 Gain 13 dBi Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Multimedia Training Kit www.itrainonline.org Parabolic Antenna Ref: RFLinx http://www.rflinx.com Model RFL-MANT19 & RFL-MANT24. Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Multimedia Training Kit www.itrainonline.org Parabolic Antenna Ref: Tongyu Communication Equipment Co Ltd. , Guangdong, China http://www.tycc.cn Model PST-2424C-08-GS High Gain 24 dBi Grid Parabolic Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Multimedia Training Kit www.itrainonline.org Flat Panel Antenna Ref: YDI.COM http://www.ydi.com Model FP12 & FP18, 12 & 18 dBi. Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Multimedia Training Kit www.itrainonline.org Backhaul Antenna High Gain Antennas for Long Range Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Multimedia Training Kit www.itrainonline.org Antenna Polarization Electromagnetic radio signal propagate through the air in two polarizations, electric field (E-field) or magnetic field (H-field), crossing 90-degree each other. An antenna polarization is relative to the E-field of antenna. If the E-field is horizontal, than the antenna is Horizontally Polarized. If the E-field is vertical, than the antenna is Vertically Polarized. Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Multimedia Training Kit www.itrainonline.org Antenna Polarization No matter what polarity you choose, all antennas in the same RF network must be polarized identically regardless of the antenna type. Using a correct polarized antenna, it would be possible for us to: Increase isolation on unwanted signal source. Cross polarization (x-pol) discrimination is around 20-25 dB. Reducing interference. Defining coverage area. Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org

Multimedia Training Kit www.itrainonline.org Antenna Polarization Horizontally Polarized. Vertically Polarized. Saturday, April 27, 2019Saturday, April 27, 2019 Multimedia Training Kit www.itrainonline.org