Samsung Confidential
[29]
a
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless)
telephones and land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast
cannot be predicted theoretically with accuracy. To assess the electromagnetic environment due
to fixed RF transmitters, an electromagnetic site survey should be considered. If the measured
field strength in the location in which the S-PATCH is used exceeds the applicable RF compliance
level above, the S-PATCH should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as re-orienting or
relocating the S-PATCH.
b
Over the frequency range 150kHz to 80MHz, field strengths should be less than [V
1
] V/m.
7.4.
Recommended separation distances between portable and mobile RF
communications equipment and the S-PATCH
-
There is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the S-PATCH can help prevent
electromagnetic interference by maintaining a minimum distance between portable and
mobile RF communications equipment (transmitters) and the S-PATCH as
recommended below, according to the maximum output power of the communications
equipment.
Rated maximum
output power of
transmitter
[W]
Separation distance according to frequency of transmitter [m]
150kHz to 80MHz
80MHz to
800MHz
800MHz to
2.5GHz
V
1
=3Vrms
E
1
=3V/m
E
1
=3V/m
0.01
0.116
0.1166
0.2333
0.1
0.368
0.3687
0.7378
1
1.166
1.1660
2.3333
10
3.687
3.6872
7.3785
100
11.660
11.6600
23.333
For transmitters rated at a maximum output power not listed above, the recommended
separation distance d in meters (m) can be estimated using the equation applicable to the
frequency of the transmitter, where p is the maximum output power rating of the transmitter in
watts (W) according to the transmitter manufacturer.
NOTE 1) At 80MHz and 800MHz, the separation distance for the higher frequency range applies.
NOTE 2) These guidelines may not apply in all situations. Electromagnetic propagation is
affected by absorption and reflection from structures, objects and people.
7.5.
Immunity and Compliance Level
