INDUSTRY COMPONENT

Antenna Reflector

A precision-engineered parabolic or shaped surface that collects and focuses electromagnetic signals in antenna systems.

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Component Specifications

Definition
An antenna reflector is a critical component in directional antenna systems that uses a precisely shaped metallic surface to reflect and concentrate electromagnetic waves toward the feed element. It functions as a passive element that enhances antenna gain, directivity, and signal-to-noise ratio by focusing incoming or outgoing radio frequency energy. Common configurations include parabolic dishes, corner reflectors, and shaped reflectors optimized for specific frequency bands and radiation patterns.
Working Principle
Operates on the principle of electromagnetic wave reflection, where incident radio waves strike the conductive surface and are reflected toward a focal point (in parabolic designs) or in a specific direction. The geometric shape determines the phase coherence and beamforming characteristics, converting spherical wavefronts into planar waves for transmission or focusing received signals onto the feed.
Materials
Typically aluminum alloys (e.g., 6061-T6) for lightweight durability, or steel with protective coatings for harsh environments. High-frequency applications may use carbon fiber composites or copper-clad laminates. Surface treatments include anodizing, galvanizing, or conductive paints to ensure consistent reflectivity and corrosion resistance.
Technical Parameters
  • Gain 30-50 dBi (typical parabolic)
  • Weight 5-5000 kg depending on size
  • Wind Load Up to 200 km/h survival
  • Polarization Linear or Circular
  • Diameter/Range 0.5m to 30m
  • Frequency Range UHF to Ku-band (300 MHz to 18 GHz)
  • Surface Accuracy ≤0.1mm RMS (for Ka-band)
Standards
ISO 1101, DIN 7186, IEEE 149

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Antenna Reflector.

parabolic reflector antenna dish RF reflector satellite antenna radar reflector electromagnetic focusing antenna gain Antenna Reflector Antenna Reflector in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

Antenna Subsystem

The antenna subsystem is a critical component of satellite communication systems responsible for transmitting and receiving electromagnetic signals between the satellite and ground stations or other satellites.

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Engineering Analysis

Risks & Mitigation
  • Surface deformation from thermal stress
  • Corrosion degrading reflectivity
  • Structural failure under high wind loads
  • Misalignment causing beam deviation
FMEA Triads
Trigger: Thermal expansion mismatch in composite materials
Failure: Surface distortion altering focal point
Mitigation: Use coefficient-matched materials and thermal coatings; implement active deformation compensation systems
Trigger: Salt spray or industrial corrosion
Failure: Increased surface roughness reducing reflectivity
Mitigation: Apply protective anodizing or conductive polymer coatings; specify marine-grade alloys
Trigger: Fatigue from wind-induced vibration
Failure: Crack propagation in support structure
Mitigation: Design with aerodynamic shapes; include dampers; follow IEC 61400-2 wind load standards

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Surface profile tolerance per ISO 1101: ±0.05mm for high-frequency applications
Test Method
Laser scanning or photogrammetry for surface verification; far-field pattern testing per IEEE 149

Buyer Feedback

★★★★☆ 4.5 / 5.0 (22 reviews)

"The technical documentation for this Antenna Reflector is very thorough, especially regarding technical reliability."

"Reliable performance in harsh Computer, Electronic and Optical Product Manufacturing environments. No issues with the Antenna Reflector so far."

"Testing the Antenna Reflector now; the technical reliability results are within 1% of the laboratory datasheet."

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Frequently Asked Questions

What is the primary function of an antenna reflector?

To collect and concentrate electromagnetic signals, increasing antenna directivity and gain by reflecting waves toward the feed element.

How does surface accuracy affect performance?

Surface deviations must be less than 1/16 of the wavelength; inaccuracies cause phase errors, reducing gain and increasing sidelobes.

Can reflectors be used for both transmission and reception?

Yes, they are reciprocal components that enhance both outgoing and incoming signal efficiency through the same reflection principle.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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