Appendix B - Cellular Information; Antenna System For Cellular Devices; Fcc Requirements For The Antenna; Antenna Specifications - Multitech MultiModem Cell MTCBA-E1 User Manual

Antenna System for Cellular Devices

The cellular/wireless performance is completely dependent on the implementation and antenna design. The
integration of the antenna system into the product is a critical part of the design process; therefore, it is essential
to consider it early so the performance is not compromised. If changes are made to the certified antenna system
of the MultiModem, then recertification will be required by specific network carriers such as Sprint. The Antenna
System is defined as the UFL connection point from the MultiModem to the specified cable specifications and
specified antenna specifications.

FCC Requirements for the Antenna

The antenna gain, including cable loss, for the radio you are incorporating into your product design must not
exceed the requirements at 850 MHz and 1900 MHz as specified by the FCC grant for mobile operations and fixed
mounted operations as defined in 2.1091 and 1.1307 of the FCC rules for satisfying RF exposure compliance. The
antenna used for transmitting must be installed to provide a separation distance of at least 20cm from all persons
and must not transmit simultaneously with any other antenna transmitters. User and installers must be provided
with antenna installation instructions and transmitter operating conditions to satisfying RF exposure compliance.

Antenna Specifications

CDMA RF Specifications

Frequency RX
Frequency TX

CDMA Antenna Requirements/Specifications

Frequency Range
Impedance
VSWR
Typical Radiated Gain
Radiation
Polarization
Antenna Loss
TRP/TIS

GSM/EGSM RF Specifications

Frequency RX
Frequency TX
35
CDMA 800
869 to 894 MHz
824 to 849 MHz
824 – 894 MHz / 1850 – 1990 MHz
50 Ohms
VSWR shall not exceed 2.0:1 at any point across the bands of operation
3 dBi on azimuth plane
Omni-directional
Vertical
Free space not to exceed -3dB
The total radiated power (TRP) at the antenna shall be no less than
+21/20 dBm for PCS/Cell channels respectively, and the total isotropic
sensitivity (TIS) at the antenna shall be no less than -104/104 dBm for
PCS/Cell channels respectively.
GSM 850 EGSM 900
869 to 894 MHz 925 to 960 MHz
824 to 849 MHz 880 to 915 MHz
CDMA 1900
1930 to 1990 MHz
1850 to 1910 MHz
GSM 1800
1805 to 1880 MHz
1710 to 1785 MHz
Multi-Tech Systems, Inc. MultiModem Cell User Guide
GSM 1900
1930 to 1990 MHz
1850 to 1910 MHz