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Integrated b/g Antenna Pattern on AP1020

Attempting to utilize AirMagnet 4.0 to plan AP placement for an indoor WiFi deployment. I will be using cisco AIR-AP1020-A-K9 AP's utilizing the internal 2.4GHz b/g radios. From the documentation I have seen on Cisco's site the integrated antennae on these WAP's are "bi-directional patch" type. There are two, A and B, antennae however the signal pattern depicted shows the signal propagating primarily to one side. Is this pattern only for the "A" antenna or is it for both? If it is only for the A side of the WAP, how do I configure the AirMagnet planner to plan for both the A and B side antenna being utilized at the same time?

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Hall of Fame Super Red

Re: Integrated b/g Antenna Pattern on AP1020

Hi Anthony,

Here is an excerpt from a good Cisco doc;

Q. How do you interpret the radiation pattern of the 1000 Series Lightweight Access Point (LAP) Antennas?

A. Azimuth diagrams are usually with the device/antenna in normal operating orientation (vertical, top up, in the center of the diagram for omni; horizontal, mount at the center, forward direction towards "0" on the diagram). The A side is most likely forward and represented at the 0 mark for azimuth, and the 90 mark for elevation. The B side is represented at the 180 mark for azimuth, and 270 for elevation. The pattern does not change in free-space if the unit is inverted. But the immediate surfaces can cause reflection/absorbtion and can alter the pattern. Metallic objects near the radiators (within ~2 wavelengths or so) can also distort the pattern significantly. The Cisco Aironet Antenna Reference Guide has more information. The 1000 Series Antennas are explained in the last section of the document.

Antenna Reference Guide

http://www.cisco.com/en/US/products/hw/wireless/ps469/products_data_sheet09186a008008883b.html

The 1020 Series LAP enclosure contains:

Four high-gain internal antennas (two 802.11a and two 802.11b/g)

You can enable or disable these antennas independently in order to produce a 180-degree sectorized or 360-degree omnidirectional coverage area.

Hope this helps!

Rob

Please remember to rate helpful posts.....

1 REPLY
Hall of Fame Super Red

Re: Integrated b/g Antenna Pattern on AP1020

Hi Anthony,

Here is an excerpt from a good Cisco doc;

Q. How do you interpret the radiation pattern of the 1000 Series Lightweight Access Point (LAP) Antennas?

A. Azimuth diagrams are usually with the device/antenna in normal operating orientation (vertical, top up, in the center of the diagram for omni; horizontal, mount at the center, forward direction towards "0" on the diagram). The A side is most likely forward and represented at the 0 mark for azimuth, and the 90 mark for elevation. The B side is represented at the 180 mark for azimuth, and 270 for elevation. The pattern does not change in free-space if the unit is inverted. But the immediate surfaces can cause reflection/absorbtion and can alter the pattern. Metallic objects near the radiators (within ~2 wavelengths or so) can also distort the pattern significantly. The Cisco Aironet Antenna Reference Guide has more information. The 1000 Series Antennas are explained in the last section of the document.

Antenna Reference Guide

http://www.cisco.com/en/US/products/hw/wireless/ps469/products_data_sheet09186a008008883b.html

The 1020 Series LAP enclosure contains:

Four high-gain internal antennas (two 802.11a and two 802.11b/g)

You can enable or disable these antennas independently in order to produce a 180-degree sectorized or 360-degree omnidirectional coverage area.

Hope this helps!

Rob

Please remember to rate helpful posts.....

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