MRF24WG0MA_12 Datasheet, PDF (23/38 Pages) Microchip Technology – MRF24WG0MA/MB Data Sheet 2.4 GHz IEEE 802.11b/g™

3.2.1
APPROVED EXTERNAL ANTENNA
TYPES
Transmitter Antenna (from Section 7.1.2 RSS-Gen,
Issue 3, December 2010):
The MRF24WG0MB module can only be sold or
operated with antennas with which it was approved.
Transmitter may be approved with multiple antenna
types. An antenna type comprises antennas having
similar in-band and out-of-band radiation patterns.
Testing shall be performed using the highest gain
antenna of each combination of transmitter and
antenna type for which approval is being sought, with
the transmitter output power set at the maximum level.
Any antenna of the same type having equal or lesser
gain as an antenna that had been successfully tested
with the transmitter, will also be considered approved
with the transmitter, and may be used and marketed
with the transmitter.
When a measurement at the antenna connector is
used to determine RF output power, the effective gain
of the device's antenna shall be stated, based on
measurement or on data from the antenna
manufacturer. For transmitters of output power greater
than 10 milliwatts, the total antenna gain shall be added
to the measured RF output power to demonstrate
compliance to the specified radiated power limits. User
manuals for transmitters shall display the following
notice in a conspicuous location:
Under Industry Canada regulations, this radio
transmitter may only operate using an antenna of a
type and maximum (or lesser) gain approved for
the transmitter by Industry Canada. To reduce
potential radio interference to other users, the
antenna type and its gain should be so chosen that
the equivalent isotropically radiated power (e.i.r.p.)
is not more than that necessary for successful
communication.
Conformément à la réglementation d'Industrie
Canada, le présent émetteur radio peut
fonctionner avec une antenne d'un type et d'un
gain maximal (ou inférieur) approuvé pour
l'émetteur par Industrie Canada. Dans le but de
réduire les risques de brouillage radioélectrique à
l'intention des autres utilisateurs, il faut choisir le
type d'antenne et son gain de sorte que la
puissance isotrope rayonnée équivalente (p.i.r.e.)
ne dépasse pas l'intensité nécessaire à
l'établissement d'une communication satisfaisante.
The above notice may be affixed to the device instead
of displayed in the user manual.
MRF24WG0MA/MB
User manuals for transmitters equipped with detach-
able antennas shall also contain the following notice in
a conspicuous location:
This radio transmitter (identify the device by certifi-
cation number, or model number if Category II) has
been approved by Industry Canada to operate with
the antenna types listed below with the maximum
permissible gain and required antenna impedance
for each antenna type indicated. Antenna types not
included in this list, having a gain greater than the
maximum gain indicated for that type, are strictly
prohibited for use with this device.
Conformément à la réglementation d'Industrie
Canada, le présent émetteur radio peut
fonctionner avec une antenne d'un type et d'un
gain maximal (ou inférieur) approuvé pour
l'émetteur par Industrie Canada. Dans le but de
réduire les risques de brouillage radioélectrique à
l'intention des autres utilisateurs, il faut choisir le
type d'antenne et son gain de sorte que la
puissance isotrope rayonnée équivalente (p.i.r.e.)
ne dépasse pas l'intensité nécessaire à
l'établissement d'une communication satisfaisante.
Immediately following the above notice, the
manufacturer shall provide a list of all antenna types
approved for use with the transmitter, indicating the
maximum permissible antenna gain (in dBi) and
required impedance for each.
Approved external antenna types for the
MRF24WG0MA/MB module are listed in Table 2-2 in
Section 2.0 “Circuit Description”.
3.2.2 HELPFUL WEB SITES
Industry Canada: http://www.ic.gc.ca/
 2012 Microchip Technology Inc.
Preliminary Information
DS70686B-page 23