The 2.4G rubber rod antenna operates through electromagnetic induction and resonance. The copper oscillators are mostly designed as λ/4 (matching the 2.4GHz wavelength), and the transmission and reception follow the reciprocity theorem. The standing wave ratio is ≤1.5 for loss control, achieving the conversion between high-frequency current and electromagnetic waves.

Main shape classification

Vertical cylindrical type: 29-200mm, 50Ω impedance, long model (≥110mm) gain 3-5dBi, suitable for routers, short model for smart home.

Bending/Folding type: The 90° elbow model is suitable for narrow Spaces, and the 19.5cm folding model can be unfolded to λ/4, with a gain of 6dBi, and is used for drones.

Mini Special type: 13-32mm, capacitor-loaded size reduction, gain 2-3dBi, waterproof version suitable for outdoor/bathroom use.

Blade Special Type: Flattened microstrip oscillator, supporting omnidirectional/directional radiation, suitable for ultra-thin terminals and in-vehicle central control systems.