Ultra-miniature circular polarized antenna for wearable devices

　　Ultra-Miniature Circular Polarized Antenna for Wearable Devices

　　Compact, Stable & Wearable-Friendly—Powering Next-Gen Smart Wearables

　　Core Advantages for Wearable Scenarios

　　✅ Ultra-Mini Size & Lightweight Design

　　Optimized for wearable devices’ space constraints: typical dimensions as small as 5mm×5mm×1mm (customizable) and weight <0.3g. Enables seamless integration into slim, skin-comfortable products (e.g., smart watch casings, wristband straps) without compromising wearability.

　　✅ Circular Polarization for Stable Signal

　　Adopts RHCP/LHCP circular polarization to eliminate signal loss from body movement or angle shifts. Ensures reliable connectivity for critical wearable functions: GPS positioning (e.g., outdoor sports watches), Bluetooth health data transmission (e.g., heart rate monitors), and NB-IoT remote monitoring (e.g., medical wearables).

　　✅ Low Power Consumption

　　Engineered with low-power circuitry (<5mW operating power) to extend wearable devices’ battery life—addressing a key pain point for end-users. Compatible with low-power protocols (Bluetooth Low Energy 5.3, NB-IoT) commonly used in smart wearables.

　　✅ Wearable-Resistant Performance

　　Built to withstand daily wearable use: IP67 water/dust resistance (supports handwashing, sweating), flexible PCB material (resists bending during movement), and skin-safe coating (hypoallergenic, meets EU REACH standards).

　　Target Wearable Device Applications

　　Smart Watches & Fitness Trackers: Enables accurate GPS tracking (e.g., running, hiking) and stable Bluetooth sync with smartphones.

　　Smart Glasses: Supports hands-free data transmission (e.g., AR navigation, industrial wearable displays) in dynamic environments.

　　Medical Wearables: Powers reliable data upload for devices like continuous glucose monitors (CGMs), heart rate chest straps, and elderly fall detectors.

　　Sports Wearables: Fits into compression sleeves, smart shoes, or headbands for real-time motion data (e.g., cycling speed, running stride) transmission.

　　Kids’ Wearables: Compact design suits small-sized smart watches (for location tracking) with lightweight, child-safe materials.

　　Key Technical Specifications

　　Dimensions: 5mm×5mm×1mm (standard); customizable down to 3mm×3mm×0.8mm for ultra-slim devices

　　Weight: <0.3g

　　Operating Frequency: 1.1GHz–2.5GHz (covers GPS L1, Bluetooth 5.3, NB-IoT, Wi-Fi 4)

　　Polarization: Right/Left Hand Circular (RHCP/LHCP, selectable)

　　Axial Ratio: ≤3dB (across entire operating band)

　　Gain: 2–5dBi (optimized for short-to-medium range connectivity)

　　Operating Power: <5mW

　　Protection Grade: IP67 (water/dustproof); IP68 optional for underwater wearables

　　Operating Temperature: -20℃ to +60℃ (suits daily and outdoor use)

　　Integration Type: SMT (Surface Mount Technology) for easy assembly into wearable PCBs