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Description & Specification
WR42 Standard Gain Horn Antenna (Model: WI-42-UBR-20)
18 - 26.5 GHz | 20 dBi High Gain | K-Band Precision Measurement
The WI-42-UBR-20 is a high-precision Standard Gain Horn Antenna designed for K-Band applications (18 to 26.5 GHz). Unlike assemblies requiring separate adapters, this model features a direct WR42 waveguide input with a UBR (UG-419/U) flange, minimizing insertion loss and maximizing signal fidelity. With a nominal gain of 20 dBi and a lightweight 50g aluminum structure, it acts as an ideal reference standard for EMI/EMC testing chambers, antenna gain calibration, and directional K-band sensing systems.
Technical Specifications
Electrical Specifications
| Frequency Range | 18 GHz to 26.5 GHz (K Band) |
| Waveguide Size | WR-42 (R220) |
| Gain | 20 dBi |
| Beamwidth (-3dB) | H-plane: 20° / E-plane: 19° |
| Max Power Handling | 500 Watts (CW) |
| V.S.W.R | 1.3 : 1 (Typical) |
Mechanical Specifications
| Dimensions | 63 x 48 x 99 mm |
| Net Weight | 50 g (Lightweight Aluminum) |
| Flange Type | UG-419/U (Square Cover) |
| Material | Aluminum |
Key Features (Model Specific)
20 dBi High Gain
Provides strong signal amplification with focused directionality (approx. 20° beamwidth), ideal for long-range detection.
Direct Waveguide Input
Features a native WR42 interface without internal coax transitions, ensuring the lowest possible insertion loss for testing.
K-Band Spectrum
Covers 18-26.5 GHz, widely used in automotive radar testing, satellite links, and high-speed data research.
EMI/EMC Standard
Designed with predictable gain characteristics, making it a reliable reference antenna for electromagnetic compatibility testing.
50g Compact Build
Extremely light and compact, allowing for easy mounting on tripods, PTZ systems, or inside small anechoic chambers.
Get a Quote / Customization
Contact us for custom mounting brackets, tripod kits, or waterproof coating options.
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