Appendix B - Wireless Antenna; The Antenna; Gsm And E-Gsm Radio Characteristics - Multitech MultiModem rCell MTCBA-H-EN2 User Manual

Appendix B – Wireless Antenna

The Antenna

The antenna sub-system and integration in the application is a major issue: Choice of antenna (type, length, performances,
thermal resistance, etc.) These elements could affect GSM performances such as sensitivity and emitted power.
PTCRB Requirements Note:
There cannot be any alteration to the authorized antenna system. The antenna system must be the same type with
similar in-band and out-of-band radiation patterns and maintain the same specifications.
FCC Requirements Note:
The antenna gain, including cable loss, must not exceed 3.0 dBi at 1900 MHz / 1.6 dBi at 850 MHz for mobile
operating configurations and 7.0 dBi at 1900 MHz / 2.3 dBi at 850 MHz for fixed mounted operations, as defined in
2.1091 and 1.1307 of the rules for satisfying RF exposure compliance.

GSM and E-GSM Radio Characteristics

GSM 850
869 to 894 MHz
Frequency RX
824 to 849 MHz
Frequency TX
RF Power Stand 2W at 12.5% duty cycle 2W at 12.5% duty cycle 1W at 12.5% duty cycle 1W at 12.5% duty cycle
Impedance
VSWR
Typical Radiated Gain
Multi-Tech Systems, Inc. MultiModem rCell User Guide
E-GSM 900 GSM 1800
925 to 960 MHz 1805 to 1880 MHz
880 to 915 MHz 1710 to 1785 MHz
50 ohms
<2
0 dBi on azimuth plane
Appendix B – Wireless Antenna
GSM 1900
1930 to 1990 MHz
1850 to 1910 MHz
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