Antenna Gain and diversity

Unanswered Question
Sep 17th, 2008
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Hi guys!


I've heard that "high" gain antennas shouldnt be used in diversity configuration (antennas like 1728), is this true?


Also.. while using this antenna, I dont see much difference in coverage than using the regular 2.2 dBi antennas that comes with the 1242 AP. At least in numbers the coverage should be like 2 times bigger, right?


Any tips or explanations are greatly appretiated :)

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changing the gain of an antenna also changes the shape a little of the radio footprint.I still struggle a little with this but as I understand it if you double the gain you give the signal more power and a flatter radiation pattern, forgetting about panel and yagis for now. This greater power punches the signal through objects more easily not necessarily improving the distance significantly.


I havnt heard of any reason not to use them for diversity but if its a relatively clear space there isnt that big an advantage using diverse antennas its more for internal apps where there are more obstacles


This might help


http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a008019f646.shtml


http://www.cisco.com/en/US/prod/collateral/wireless/ps7183/ps469/product_data_sheet09186a008008883b.html

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