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Description & Specification
4 GHz Precision Reference Antenna
CTIA Symmetry Compliant | Reference Sleeve Dipole | Model: SL-4000-SF
The SL-4000-SF is a high-precision reference sleeve dipole antenna professionally engineered and manufactured by Fei Teng Wireless Technology Co., Ltd. (FT-RF) for absolute system calibration and trace profiling. Operating within a tightly optimized microwave spectrum across the continuous 3800 MHz to 4200 MHz band, this premium radiator provides an omnidirectional horizontal radiation profile paired with a stable nominal gain of 2.15 dBi ± 1 dBi. Featuring a standard high-grade SMA-Female connector interface (with custom N-Female available), it ensures flawless structural impedance coplanarity and ultra-low-loss power transfer. Enclosed in a rugged omnidirectional fiberglass radome and precision constructed in Taiwan, it exhibits exceptional electromechanical longevity, an ultra-lightweight 100g profile, and rigorous pattern symmetry metrics meeting strict CTIA compliance guidelines. It stands as the definitive choice for broad-area OTA chamber reflectivity evaluations, automated antenna characterization ranges, industrial ripple tests, and calibration setups demanding uncompromised signal symmetry parameters.
Electrical & RF Performance
| Frequency Range Class | 3800 MHz to 4200 MHz (Precision 4 GHz Spectral Optimization) |
| Nominal Gain (Typical) | 2.15 dBi ± 1 dBi |
| Pattern Symmetry Accuracy | ± 0.1 dB (Strict CTIA Compliance Standard) |
| Antenna Radiator / Radome Type | Precision Sleeve Dipole Layout Geometry / Omnidirectional Fiberglass |
| Nominal System Impedance | 50 Ohms |
Mechanical & Environmental Data
| Physical Dimensions (L x W x H) | 145 x 26 x 26 mm |
| Net Weight Profile | 100 g (Ultra-Lightweight Footprint) |
| Standard Connection Interface | SMA-Female (Optional High-Isolation N-Female Custom Layout Available) |
| Manufacturing Origin | Taiwan Design & Made in Taiwan (FT-RF Professional Grade) |
CTIA Symmetry Precision
Engineered to meet rigorous +/- 0.1 dB symmetry requirements, providing high-level accuracy for OTA chamber reflectivity evaluation and professional ripple tests.
Feed Point Contact Isolation
The specialized sleeve design prevents the feed cable from interfering with the antenna's effectiveness, ensuring a pure toroidal radiation pattern layout.
Reference Grade Dominance
Serves as a reliable gain reference and low-gain efficiency standard for calibrating high-frequency tactical monitoring systems and electronic protection equipment.
Ultra-Lightweight Design
Weighing only 100g, its professional aesthetic and compact profile allow for easy integration into precision 3D positioning towers and fiber-optic masts.
Contact FT-RF Engineering Team
Contact our technical engineering division today to request official quote sheets, custom connector builds, certified individual radiation patterns, or specialized chamber layout reports.
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