CWNA Chapter 18 – 802.11n

My Notes from chapter 18 of the CWNA study guide 802.11n-2009 amendment Defines High Throughput (HT) Clause 20 radios that use multiple-input, multiple-output (MIMO) technology in unison with Orthogonal Frequency Division Multiplexing (OFDM) technology Benefits of using MIMO are increased throughput and even greater range 802.11n radios are backward compatible with legacy 802.11a/b/g radios A …

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CWNA Chapter 4 – Radio Frequency Signal and Antenna Concepts

My Notes from chapter 4 of the CWNA study guide Azimuth and Elevation Charts (Antenna Radiation Envelopes) In either chart, the antenna is placed at the centre of the chart. Azimuth chart = H-plane = top-down view Elevation chart = E-plane = side view Interpreting Polar Charts Represent the decibel (dB) mapping of the antenna …

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