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Application — Antenna Positioning

BLDC Motor For Antenna Positioning And Satellite Tracking.

Antenna positioning systems operate outdoors, often on rooftops or remote towers, in temperature extremes and high winds. Brushless DC motors with worm gear self-locking hold pointing accuracy without consuming holding power, resist wind back-drive and survive years of outdoor exposure without brush maintenance. Shenghe builds BLDC worm gear motors for satellite dish tracking, radar pan-tilt, VSAT auto-pointing and weather station instrumentation.

  • 12V / 24V / 48V DC power supply
  • 20W — 500W rated power range
  • Worm gear self-locking for wind load resistance
  • IP65 outdoor rated, -30 °C to +70 °C
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Why BLDC For Antenna Systems

What Replaces Stepper And Brushed Motors In Antenna Positioning

  • Self-locking worm gear holds position without power — zero holding current
  • Smooth low-speed rotation for precise satellite tracking
  • No brush wear in remote unattended installations
  • Wide temperature operation: -30 °C to +70 °C standard
  • Higher efficiency than stepper motors reduces solar panel sizing
  • Compact form fits inside pedestal and turntable housings

Typical Antenna Motor Spec Range

ParameterRange
VoltageDC 12V / 24V / 48V
Rated power20 W — 500 W
Motor speed2000 — 4000 RPM
Gear ratio30:1 — 300:1 (worm)
Output torque5 Nm — 150 Nm
Pointing accuracy±0.05° with encoder
ProtectionIP65 / IP66
Operating temp-30 °C to +70 °C (extended: -40 °C to +85 °C)

Typical Antenna Positioning Use Cases

  • Satellite dish tracking: Azimuth and elevation drives for TVRO, DTH and LEO satellite auto-tracking
  • VSAT terminals: Auto-pointing motors for maritime, vehicle-mount and fly-away VSAT systems
  • Radar antenna: Continuous rotation and sector-scan pan drives for surveillance and weather radar
  • Communication towers: Remote tilt motors for cellular base station antenna down-tilt adjustment
  • Weather stations: Wind vane and anemometer positioning, solar radiation tracker drives
  • Radio telescope: Fine-adjustment actuators for dish surface panel alignment
  • Direction-finding: Rotating loop and Adcock array positioning for signal direction analysis

Technical Details For Antenna System Integrators

  • Worm gear self-locking: Gear ratio above 40:1 provides full self-locking — no holding brake needed
  • Absolute encoder option: Multi-turn absolute position known after power cycle — no homing required
  • Marine-grade finish: Anodized aluminum housing and stainless hardware for coastal salt spray
  • Lightning ground path: Motor frame provides continuous ground bond to tower structure
  • Low backlash: Double-lead worm achieves < 6 arcmin backlash for precision tracking
  • Cable pass-through: Hollow-shaft option for routing RF cables through the azimuth axis

Motor For Your Antenna System?

Send your dish size, wind load spec, pointing accuracy, operating temperature range and quantity. We recommend a motor-gearbox combination for your antenna platform and quote within one working day.

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