ANTENNAS
16
SocketModem
®
Cell MTSMC-LSP3 Device Guide
Chapter 4 – Antennas
Antenna System Cellular Devices
The antenna system is defined as the UFL connection point from the device through the cable and antenna. Device
performance depends on implementation and antenna system design. Integrating the antenna system is a critical
part of the design process; therefore, it is essential to consider it early so the performance is not compromised.
Requirements for Cellular Antennas with regard to FCC/IC Compliance
The antenna must be the same type, with similar performance and in- and out-of-band radiation patterns as the
listed antenna. The antenna used must stay below the FCC/IC maximum gain.
For our bundles, MultiTech may change antennas over time. The listed antenna(s) is used as a reference or was
shipping when this document was last updated.
LTE Antenna
The cellular radio portion of the device is approved with the following antenna or for alternate antennas meeting
the given specifications. If using a different antenna, ensure
Manufacturer:
Wieson Technologies
Description:
LTE Antenna
Model Number:
GY115-Big Type
MultiTech ordering information:
Model
Quantity
ANLTE4-2HRA
2
ANLTE4-10HRA
10
ANLTE4-50HRA
50
LTE Antenna Diversity
Antenna diversity uses two receive antennas to improve the downlink connection (cell tower to mobile). It has no
effect on the uplink (mobile to cell tower).
Antenna diversity is useful in environments where the signal arrives at the device after bouncing off or around
buildings or other objects. The bounced signal may be attenuated by going through semi-transparent (to the
signal) objects. Each signal alteration can change its magnitude, phase, orientation, or polarization. This complex
environment can exist in cities, inside buildings or in traffic. In this environment, signal paths from the cell tower
form an interference pattern of peaks and nulls. These peaks and nulls can be very close together.
Antenna diversity provides an advantage in complex environments because if one receive antenna has a poor
signal due to an interference null pattern, the other antenna is likely not in the null and has better reception. The
radio compares the reception from both receive antennas and uses the one with the strongest signal.
Important:
You must deploy with two antennas, unless your carrier has authorized you to deploy with one
antenna.