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Method for active directivity and checking

IP.com Disclosure Number: IPCOM000008964D
Publication Date: 2002-Jul-26
Document File: 3 page(s) / 102K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for active directivity and checking. Benefits include improved ease of implementation and improved usability.

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Method for active directivity and checking

Disclosed is a method for active directivity and checking. Benefits include improved ease of implementation and improved usability.

Background

              Federal Communications Commission (FCC) regulations require that 802.11a antennas, specifically those in the 5.15 to 5.25-GHz band, be permanently mounted to the card at the time of sale. However, consumers are expected to want to purchase wireless modules that they can plug into a PCI or other future input/output (I/O) technology slot that is within the computer. When consumers put the module inside the computer, an antenna must be on the outside of the computer. At the same time, requirements exist for standardized connectors and large antennas. Because a PCI mounting bracket cannot traverse a PCI slot, the antenna must pass through the slot.

              Manufacturers can select from a few alternatives and comply with the FCC regulations:

•             Not sell to retail markets

•             Permanently mount the antenna to the card and require the customer slide the antenna through the PCI slot

•             Check to make sure the correct antenna is there

              -             Use an active antenna encoder to verify that the correct antenna is installed on that port

              -             Match the performance characteristics of the antenna system to meet FCC requirements

•             Attach the PCI connector after point of sale, slide the card through the slot, and then attach the PCI bracket and mount

•             Not use a PCI slot and use a modular scheme that resides outside (such as USB and 1394)

•             Attach a digital cable to a radio with a directly mounted antenna

Description

              The disclosed method is the concept of testing passive antennas to recognize that they are functioning within a standard operating range and meet FCC regulations. A series of tests can be a...