User's Manual

URD1 – OTL 5696.1– 022 / 72740 Edition 0.4 HILONC- 3GPS APPLICATION NOTE
: RF pads
6.1.2. Antenna Recommendations
 Antenna for HILONC-3GPS should resonate in the operating bands (GSM 850, 900, 1800, 1900 + UMTS
band 1, 8) depending on the actual application of the specific HILONC-3GPS module.
Note that the RF-impedance of the HILONC-3GPS is 50
Ω
.
Use low loss antenna cable (max. 0.5dB).
 To avoid interference choose an antenna type with a radiation pattern that does not interfere with the
module. .
Circular polarized antennas are preferable.
Verify operation of the antenna by measuring the total radiated power.
Avoid placing a transmitting antenna near sensitive areas.
Apply EMC-design rules and follow shielding concepts.
Note d’étude / Technical document :
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