TIA-329.3:2011

$32.50

Minimum Standards for Communications Antennas – Part 3: Portable Antennas

Published By	Publication Date	Number of Pages
TIA	2011	50

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Category: TIA

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Description

The TIA-329.* series standards deal with antenna systems.
TIA-329.1-* deals with requirements for and measurements of Base
Station antennas. TIA-329.2-* deals with measurements of mobile
antennas. This standard, TIA-329.3, deals with measurements of
portable antennas.

The term "portable antennas" in this context is taken to mean
any antenna mounted on or built-in to a portable communication
device. It also includes any human-worn antenna intended to be used
exclusively with a portable communication device.

The term "portable communications device" includes, but is not
limited to, the following classes of devices:

• Hand-held portable transceivers (i.e. "walkie-talkies")

• Packset portable transceivers

• Paging receivers

• Hand-held mobile (cellular) telephones

• Portable information devices

• Devices intended to be plugged-in to a laptop computer via an
Accessory Port or a USB port

It is the intent of this document to present a method of
measuring in situ portable antenna performance for
application to network design. There are a number of factors that
affect antenna operation on a portable device that are part of the
ambient environment within a few wavelengths of the portable
antenna. These factors from the ambient environment are detached
from the portable transceiver and the portable antenna themselves.
The factors include the dielectric and absorption properties of the
bodies of the personnel holding the portable device with their
apparel, together with aspects of the posture, azimuth, and
orientation of the antenna, and any furnishings, vehicles, or
environmental edifices within a few wavelengths of the antenna.
Other details of the ambient environment can also introduce
factors, such as a factor for precipitation or moisture. A
measurement of portable antenna operation requires the selection of
some sample of the portable devices, and any associated factors,
combined with the technical means to make the measurement for all
the selected samples. This selection of factors constitutes the
test condition(s) of an experiment. If the selection of the factors
in the test condition is successful, then the measurement results
will be distributed to permit statistically valid conclusions about
portable device(s) operation in a network design. The method of
measurement includes an experimental design for the purposes of
measuring portable antenna operation for receiving or transmitting
messages with the selection of some set of test conditions that is
within the technical means of effort to apply the measurement. The
measurements results will then be a set of data points that are
statistically analyzed to draw valid conclusions, if there are any.
Since the factors from the ambient environment are likely to change
for different applications or purposes, the repeatability of the
measurement results may not be always possible, unless the
experiment is designed to tightly constrain the factors that affect
portable antenna operation. Any extension of experimental test
results to other portable devices, or other antennas, or to
different ambient factors is not anticipated by this standard..