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Quantic ECI: Custom Antenna Coils & Sensor Coils for Mission-Critical Applications 

Quantic ECI specializes in custom antenna coils and sensor coils for mission-critical applications. Our antenna coils range from miniature ferrite-wound components for near field (LF & HF) RFID transponder applications, to large self-supporting air coils measuring up to 3 feet in diameter. We provide reliable and cost-effective electromagnetic component solutions for the aerospace, defense, security, medical & commercial industries. 

Our engineers are recognized experts in the challenging field of antenna coil design and electromagnetics. We partner with our customers to solve tough, unorthodox engineering challenges through expertise, experience and creativity in custom electromagnetic components.


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Learn about our Capabilities

2-D and 3-D Transponder Coil Series 

A2D8 Series - SMT 2-D Transponder Coil

Compact surface-mount antenna coils designed for space-constrained applications requiring high-reliability electromagnetic components

A2D8 Transponder Coil


3-D Transponder Coil Series

Three-dimensional antenna coil designs optimized for enhanced field generation and superior electromagnetic component performance in aerospace and defense applications

A3D4-25 transponder coil

A3D6-35 transponder coil

A3d9 transponder coil

A3D22 transponder coil

Specialized Antenna Coil Series 

Az10 Series - Z-Axis Antenna Coil

Specialized Z-axis antenna coil design for applications requiring precise directional field generation and control

Az10 antenna coil

Antenna Coil & Sensor Coil Product Applications

Transmit/Receive Coils

RFID transponder systems and wireless communication applications requiring reliable signal transmission and reception

EMI Detection Coils

Electromagnetic interference monitoring and detection systems for critical electronic applications

3-Axis Field Generation Coils

Multi-dimensional magnetic field generation for navigation, positioning, and orientation systems

Telemetry Coils

Remote monitoring and data transmission systems for aerospace and defense applications


Sensor Coils

Position sensing, current detection, and proximity sensing applications across multiple industries

Communications Coils

RF transmission systems and wireless communication networks requiring high-reliability performance

Test & Measurement Coils

Precision instrumentation and calibration systems for laboratory and field applications


Engineering Excellence & Custom Design

Comprehensive Engineering

Established in 1947, Quantic ECI is your complete source for leading-edge passive magnetic components spanning a broad range of reliable and cost-effective solutions. Our expert engineering department leverages decades of electromagnetic component design experience.

Engineering Highlights:

  • Custom antenna coil design for specialized applications

  • Electromagnetic component optimization

  • Design verification and validation

  • Advanced materials selection

  • Manufacturability-focused design approach


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mission-critical
Mission-Critical Reliability

At Quantic ECI, customization goes far beyond adjusting specs. It's about end-to-end collaboration — from understanding your application's environment to selecting materials and designing for manufacturability. 


Our antenna coils are engineered for demanding applications where reliability and performance are critical, including extreme temperature, vibration, radiation, and size constraints.


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State-of-the-Art Manufacturing

ECI is a global designer/manufacturer of custom electromagnetic components. From our facilities in the U.S. and Europe, we support worldwide markets ranging from consumer & commercial to military & aerospace. Our manufacturing capabilities support antenna coil production from prototype through high-volume production, utilizing advanced winding technologies and precision assembly processes.

Manufacturing Capabilities:

  • Miniature ferrite-wound components

  • Large self-supporting air coils (up to 3 feet diameter)

  • Precision SMT transponder coil manufacturing

  • 2-D and 3-D transponder coil assembly

  • Z-axis antenna coil production

  • Custom coil form fabrication

  • Advanced materials processing

  • Quality control and testing

Antenna Coil Technology & Operation

Antenna Coils operate by current flowing through the Transmitting Antenna (Tx), which generates a radiating magnetic field. A current is induced in a receiving antenna (Rx) while in proximity of this magnetic field, developing a signal across the coil.

Ferrite core antennas are typically used for lower frequencies (125kHz & 13.56 MHz are common) and can be designed in various shapes and aspect ratios to optimize field direction and intensity, including 3D for near isotropy.

Advanced Design Approaches

Additional design approaches include reducing capacitance using single-layer windings, Litz wire to minimize high frequency AC losses, Ceramic coil forms for mechanical stability, self-supporting air coils for maximum space utilization, etc.

Key design features:

  • Single-layer windings for reduced capacitance

  • Litz wire construction for minimized high-frequency AC losses

  • Ceramic coil forms for enhanced mechanical stability

  • Self-supporting air coil designs for maximum space utilization

  • Custom shapes and aspect ratios for optimized field direction

 Quality and Testing Excellence

Advanced Testing Capabilities

In-house environmental testing ensures long-term durability. Our comprehensive testing ensures antenna coil performance in the most demanding applications.

Testing Services:

  • Electromagnetic field testing

  • Frequency response analysis

  • Environmental stress testing

  • Performance validation

  • Quality assurance protocols

LEARN ABOUT OUR TESTING SERVICES →

Industry Certifications and Standards

Quantic ECI antenna coils are manufactured to the highest quality standards for mission-critical applications:

  • AS9100 / ISO9001 certified manufacturing

  • ITAR registered facility

  • Military specification compliance

  • Aerospace quality standards

  • Defense industry certifications

VIEW QUALITY CERTIFICATIONS  →

 Get Started with Your Antenna Coil or Sensor Coil Solution

 Ready to discuss your antenna coil or sensor coil requirements? ECI's team of experts is standing by to help you find the perfect electromagnetic component solution for your application. 


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