Flexible substrate circular polarized antenna for automotive radar

　　Flexible Substrate Circular Polarized Antenna: Ideal Solution for Automotive Radar Systems

　　As intelligent driving and ADAS (Advanced Driver Assistance Systems) become core competitiveness in the global automotive industry, automotive radar—especially millimeter-wave radar—has become a "critical eye" for vehicle safety. To meet the strict requirements of radar systems (e.g., space constraints, environmental adaptability, and detection accuracy), our Flexible Substrate Circular Polarized Antenna integrates the flexibility of advanced substrates with the anti-interference of circular polarization, creating a high-performance, reliable solution for global automotive electronics clients.

　　1. Core Advantages: Tailored for Automotive Radar Scenarios

　　① Flexible Substrate: Break Through Space Limitations

　　Ultra-thin & Lightweight: Thickness as low as 0.15mm, weight <5g, easily fits curved surfaces (e.g., bumper inner walls, fender gaps) and narrow spaces of radar modules—solving the installation challenges of traditional rigid antennas.

　　High Environmental Resistance: Adopts high-performance PI (Polyimide) substrate, resistant to -40℃~105℃ extreme temperatures (meets automotive electronics Grade A standards), and withstands vibration (ISO 16750-3) and humidity (IP6K9K) tests—stable operation in harsh automotive environments.

　　Durable & Easy Integration: Excellent mechanical flexibility (can be bent 10,000+ times without performance degradation); compatible with SMT (Surface Mount Technology) and radar module assembly processes, reducing client production costs.

　　② Circular Polarization: Enhance Radar Detection Performance

　　Strong Anti-Interference: Circular polarization eliminates signal crosstalk from linear polarization sources (e.g., road reflections, other vehicle radars), improving target recognition accuracy by ≥30% in rainy, foggy, or dusty environments.

　　Precise Target Localization: Axial Ratio (AR) ≤2.5dB (full operating frequency band), ensuring consistent signal polarization characteristics; supports accurate measurement of target distance, angle, and speed—critical for adaptive cruise control (ACC) and automatic emergency braking (AEB).

　　Wide Beam Coverage: Half-power beamwidth (HPBW) up to 80° (azimuth) and 60° (elevation), covering blind spots of automotive radar (e.g., front-facing radar, corner radar, surround-view radar).

　　2. Key Technical Parameters: Meet Industry Standards

　　Operating Frequency Band: Covers 24-26GHz (for short-range radar) and 76-81GHz (for long-range radar), matching global mainstream automotive radar frequency requirements to ensure compatibility with diverse radar systems.

　　Gain: ≥8dBi for 24GHz band and ≥10dBi for 77GHz band, which ensures long detection distance—up to 200m for long-range radar, meeting the performance needs of high-speed driving assistance functions.

　　Polarization Isolation: ≥30dB, effectively minimizing unwanted signal interference and maintaining stable signal transmission, which is essential for accurate target recognition.

　　Impedance: 50Ω, perfectly matched with mainstream radar transceivers to reduce signal reflection loss and improve energy utilization efficiency.

　　Connector Type: Standard SMP/SMB connectors (customizable according to client needs), ensuring seamless compatibility with most radar modules and reducing assembly complexity.

　　Certification: Compliant with IATF16949 (automotive industry quality management standard), CE, FCC, and RoHS, meeting global automotive market access requirements and helping products smoothly enter European, American, and Asian markets.

　　3. Application Scenarios: Full Coverage of Automotive Radar Systems

　　Our flexible substrate circular polarized antenna is widely applicable to various automotive radar types, helping clients optimize system performance:

　　Front-Facing Long-Range Radar: Supports ACC, AEB, and lane centering assist (LCA)—stable signal transmission even in high-speed driving.

　　Corner Radar: Fits narrow spaces of vehicle corners, enhancing blind-spot detection (BSD) and lane change assist (LCA) functions.

　　Surround-View Radar: Flexible design adapts to different body contours, enabling 360° environmental perception for automatic parking.

　　In-Cabin Radar: Thin, lightweight, and non-intrusive, suitable for occupant detection and child presence alert (CPA).

　　4. Why Choose Our Antennas?

　　Automotive-Grade Quality Control: From raw material selection to final assembly, we implement a full-process quality management system compliant with IATF16949, with a product qualification rate of ≥99.8%.

　　Customization Capabilities: We provide tailored solutions based on client radar module size, installation location, and performance requirements—sample development can be completed within 7 working days.

　　Global Supply Chain Support: We have 2 production bases (China, Vietnam) with a monthly capacity of 500,000 units, ensuring fast delivery (15-20 days for bulk orders) and supporting local after-sales service.

　　Technical Collaboration: Our R&D team (15+ engineers with 10+ years of automotive antenna experience) can provide pre-integration technical consulting and post-sales debugging support.

　　5. Target Clients & Cooperation Models

　　Target Clients

　　Automotive radar Tier 1 suppliers (e.g., Continental, Bosch, Aptiv)

　　Vehicle OEMs (passenger cars, commercial vehicles)

　　Automotive electronics module manufacturers

　　ADAS solution providers

　　Cooperation Models

　　Customized development (based on radar system requirements)

　　Bulk supply (long-term stable cooperation)

　　Technical joint development (for new radar product R&D)