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Antenna Coil Component – Computer, Electronic and Optical Product Manufacturing

Component Specifications

Definition

An antenna coil is a passive electronic component consisting of a conductor wound into a coil shape, designed to generate or receive electromagnetic fields in RF applications. In industrial contexts like antenna/scanner heads, it converts electrical signals into electromagnetic waves for transmission or vice versa for reception, operating within specific frequency ranges determined by its inductance, geometry, and material properties. It is critical for wireless communication, RFID systems, and scanning technologies.

Working Principle

The antenna coil operates on electromagnetic induction principles. When an alternating current flows through the coil, it generates a varying magnetic field that radiates as electromagnetic waves for transmission. Conversely, when exposed to an external electromagnetic field, it induces a voltage across the coil for signal reception. Its performance depends on factors like inductance, resonance frequency, and quality factor (Q), often tuned with capacitors for optimal operation in specific RF bands.

Materials

Typically made from copper or aluminum wire with enamel or polymer insulation, wound around a core material such as air, ferrite, or powdered iron to enhance magnetic properties. High-frequency applications may use litz wire to reduce skin effect losses. Cores can be cylindrical, toroidal, or planar, with materials selected based on frequency range and permeability requirements.

Technical Parameters

Tolerance ±5% to ±10%
Inductance 1 μH to 100 mH
DC Resistance <1 ohm
Frequency Range 100 kHz to 2.4 GHz
Quality Factor (Q) >50 at operating frequency
Operating Temperature -40°C to +85°C

Standards

ISO 11452, DIN EN 55022

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Antenna Coil.

Parent Products

This component is used in the following industrial products

Antenna/Scanner Head

The electromagnetic signal transmission/reception and scanning component of an identification reader

View Product Details

Engineering Analysis

Risks & Mitigation

Electromagnetic interference (EMI)
Thermal overheating due to high currents
Mechanical damage from vibration or impact
Degradation from environmental exposure (e.g., moisture, chemicals)

FMEA Triads

Trigger: Poor soldering or connection faults
Failure: Intermittent signal loss or complete failure
Mitigation: Implement automated optical inspection (AOI) and rigorous electrical testing during assembly.

Trigger: Exposure to harsh environments
Failure: Corrosion or insulation breakdown leading to short circuits
Mitigation: Use conformal coatings and select materials with high environmental resistance, such as encapsulated coils.

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

Inductance tolerance typically ±5% to ±10%, with tighter tolerances available for precision applications

Test Method

Testing includes inductance measurement using LCR meters, Q factor analysis, and environmental testing per standards like ISO 16750 for automotive or industrial use.

Buyer Feedback

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Serial interface for industrial data transmission between IoT gateways and legacy equipment using RS-232/422/485 protocols.

Frequently Asked Questions

What is the primary function of an antenna coil in a scanner head?

In a scanner head, the antenna coil transmits and receives RF signals to read data from tags or labels, such as in RFID systems, enabling wireless identification and tracking.

How does material choice affect antenna coil performance?

Material selection impacts inductance, frequency response, and efficiency. For example, ferrite cores increase inductance and are used in lower frequencies, while air cores are preferred for high-frequency applications to minimize losses.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Antenna Coil