2.4M Ka-Band Terminal Remote Auto Acquire / Auto ... - O3b Networks

2.4M Ka-Band Terminal
Remote Auto Acquire / Auto Tracking
O3bTrunk customer terminals are sized to meet the customer’s Service Data Rate (SDR)
requirements and offers service availability targets of 100%. The O3bTrunk recommended
terminals for each region are based on link budget calculations based on the customer’s
location and are designed to work with existing VSAT modems and transceivers.
Ka-Band Azimuth +/- 10 deg measured (Tx) Band pattern coverage
Description
The new series auto acquire / auto track, General Dynamics
SATCOM Technologies’ 2.4m Ka-Band tracking antenna has been
designed to provide a reliable, trouble free solution for the O3b
terminal installations. Each terminal comprises a pair of tracking
antennas under the control of a dedicated antenna control unit
[ACU]. One antenna acquires and follows a rising O3b satellite in
MEO orbit while the second antenna is parked in a home position
for the next rising satellite. The O3b service is maintained by the
antenna pair acquiring and tracking alternate satellites in the O3b
constellation. Terminals have been designed to support a range of
Ka-band SSPB’s ranging in output powers from 10 watts to 40 watts.
The mechanical design has been optimized for high efficiency
packaging to reduce shipping costs. Material selections for the
reflector significantly reduce the risk for shipping damage when
compared to metal reflector solutions. Factory pre-assembly of
critical components eliminates the requirement for complex
assembly procedures in the field.
Ka-Band Azimuth +/- 10 deg measured (Rx) Band pattern coverage
Key Features
— AUTOMATED ACQUIRE AND PRECISE
TRACKING ACCURACY FOR TERMINALS
REQUIRING HIGHER UPLINK EIRP MARGINS
— RELIABLE ALL-WEATHER PERFORMANCE
— INCREASED ANTENNA STRENGTH TO
SUPPORT A VARIETY OF SSPB OPTIONS
RANGING FROM 10 TO 40 WATTS
— INTEGRATED POSITIONER PEDESTAL
AND ANTENNA CONTROL UNIT
— FIELD FRIENDLY INSTALLATION WITHOUT
REQUIREMENT FOR SPECIALIZED TOOLS
— OPTIMIZED, 4-PIECE REFLECTOR DESIGN
FOR MAXIMUM SHIPPING EFFICIENCIES
— COMPLIANT WITH MAJOR INTERNATIONAL
REGULATORY REQUIREMENTS (ITU-R S.580,
FCC 47 CFR 25.209 SIDELOBE SPECIFICATIONS)

Continued
Electrical Performance
Antenna size
Operating Frequency (GHz)
Midband Gain ( +/- .2 dB)
HPBW Nominal Mid-Band
to -3 dB points (degrees)
Receive
Transmit
Receive
Transmit
Receive
Transmit
2.4M (4-piece)
17.960 – 19.163 GHz
27.760 – 28.963 GHz
51.2 dBi
55.0 dBi
0.47 deg
0.30 deg
Antenna Noise G/T (dB/K) at 19.2 GHz & 15 deg elevation
Uplink EIRP (dBW) with
Multiple SSPB/HPA Options:
5 watt SSPB
10 watt SSPB
20 watt SSPB
40 watt SSPB
29.0 dB/K
–
65.0 dBW
68.0 dBW
71.0 dBW
Sidelobe Envelope Co-pol (Azimuth) Meets or exceeds requirements of FCC 47 CRF 25.209
and ITU-R S.580-6
Polarization (co-pol)
Feed Interface
Cross Pol Isolation
Tx-Rx Port to Port Isolation
VSWR (Tx & Rx Bands)
Mechanical
Receive
Transmit
RHCP/LHCP (Field Selectable)
WR-42
WR-28
>20 dB on axis
>80 dB
1.3:1 Max (Γ