Table of Contents
Advertisement
Chapter 1 – Product Overview
Cellular Information
Antenna System for Cellular Devices
The cellular/wireless performance depends 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 is 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.
PTCRB Requirements for the Antenna
There cannot be any alteration to the authorized antenna system. The antenna system must maintain the same
specifications. The antenna must be the same type, with similar in-band and out-of-band radiation patterns.
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
16
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 rCell User Guide
GSM 1900
1930 to 1990 MHz
1850 to 1910 MHz
Advertisement
Table of Contents
Need help?
Do you have a question about the MultiModem MTCBA-G2-EN2 and is the answer not in the manual?