Dolphin Series Antenna

Low Profile Multi-Element Antenna (RFT-LPMBA-1301-xS)

Roof-top Bus, Railway/Light Rail, Car Antenna

  • Mounted on Vehicles such as buses, trucks and trains
  • Multi-Element - Innovative Dual-Frequency VHF, GSM/GPRS, GPS, UMTS/3G
  • Now fitted on over 1000 Transport for London Buses (iBus Project)
  • Can be tailored to the requirements of the customer

Performance Advantage


  • Innovative Dual-Frequency VHF Element (Patent Pending)
  • The VHF Element is capable of being tuned to two frequencies, when the seperation between Rx and Tx is in excess of 5MHz
  • Superior Performance within both the Tx and Rx bands when compared to Standard Antenna Technology, hence improving the efficiency of the antenna
  • Mechanical Strength and High Electrical Efficiency to provide maximum Reliability

Key Features

  • Capable of withstanding induced vibration by the vehicle, as well as withstanding the environmental and operational requirement for this type of hardware
  • Sealed to IP67 Standards
  • ABS Radome is durable, resistant to washes, UV Stable and Weather Proof
  • Omnidirectional pattern (except GPS)
  • No tuning required on installation, pre-tuned by design to meet user requirements

Technical Specifications

VHF

Frequency Range
130MHz - 220MHz
Gain
4 dBi
Radiation Pattern
Omnidirectional
Nominal Impedence
50 Ohm
VSWR
2:1 (Max)
Maximum Input Power
50 W
Grounding
Direct Grounding at Mounting Stud
Ground Plane
1.5m x 1.5m typical (Optional Ground Plane Kit supplied for GRP Roofs)

GSM/GPRS

Frequency Band
870 - 960MHz / 1710 - 1880MHz
Gain
5 dBi
Nominal Impedence
50 Ohm
VSWR
2.0 : 1.0 (Max)
Maximum Input Power
25 W

GPS

Frequency Band
1575.42MHz
Gain
3.0 dBi Min
Polarisation
Right Hand Circular
Nominal Impedence
50 Ohm
LNA Gain
28 dB +/- 3dB
Noise Figure
1.5 dB
VSWR
2.0 : 1.0 Max)
DC Characteristics
5V +/- 0.5v, 30mA Max

UMTS/3G

Frequency Band
1900 - 2200MHz
Gain
5 dBi
Polarisation
Vertical
Nominal Impedence
50 Ohm
VSWR
2.0 : 1.0 (Max)
Maximum Input Power
25 W

WLAN

Frequency Band
5.0 - 5.9GHz (802.11 a), 2.4 - 2.5GHz (802.11 b/g)
Gain
3 dBi
Polarisation
Vertical
Nominal Impedence
50 Ohm
VSWR
2.0 : 1.0 (Max)
Maximum Input Power
20 W
Grounding
Direct Grounding at Mounting Stud
Ground Plane
1.5m x 1.5m typical (Optional Ground Plane Kit supplied for GRP Roofs)


Size and Weight

  • Length: 980 mm
  • Width: 210 mm
  • Height: 60 mm
  • Weight: 3 Kg approx

Environmental Requirements

  • Operating Temperature: -40° to 70°C
  • Relative Humidity: 5% to 95% RH

RF Interface

  • Output Connectors: Automotive Fakra Connector - SMB Male (Other Connectors available on request)
  • Feeder Cable: Low Smoke Halogen Free LMR195 equivalent cable

This product is RoHS Compliant

Vehicle Antennas










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