Simon,
the basic rule is "as long as you match the AP connector" you can use the antenna. So basically any dipole that is listed in the Cisco antenna reference you can use. Now since your requirement is a dual band, you just look for dual band dipole. Even with other antennas, you know you have 4 dual band antenna ports on the 2702e, so you just need to find an AP with 4 antenna leads with the proper connectors.
The antenna you stated will work.
-Scott
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-Scott
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