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I-Type End-Launch Waveguide-to-Coaxial Adapter
Model: BTHXXX-01
The BTH series is a family of I-type end-launch waveguide-to-coaxial adapters providing low-loss transition between rectangular waveguides and coaxial interfaces. The series covers 18–67 GHz in 6 models, spanning K, Ka, Q, V and E bands, with standard waveguide interfaces from WR-42 to WR-15 and coaxial connectors from 2.92mm to 1.0mm. Precision-machined from aluminum with natural conductive oxidation finish, suitable for millimeter-wave RF systems, antenna feeds and test & measurement applications.
Product Features
Wide Frequency Coverage: 18–67 GHz, covering K / Ka / Q / V / E bands
Low VSWR: ≤1.4
Low Insertion Loss: ≤0.4 dB
Standard Interfaces: WR-42 to WR-15 waveguide + 2.92mm to 1.0mm coax
6 Models Available: meeting different frequency band and connector requirements
Technical Specifications
| Model | Frequency | VSWR | IL | Waveguide | Coax | Dimensions (mm) |
| BTH220-01 | 18–26.5 GHz | ≤1.25 | ≤0.2 dB | WR-42 | 2.92mm | 24.25×22.4×22.4 |
| BTH260-01 | 22–33 GHz | ≤1.25 | ≤0.2 dB | WR-34 | 2.92mm | 24.25×23×23 |
| BTH320-01 | 26.5–40 GHz | ≤1.25 | ≤0.2 dB | WR-28 | 2.92mm | 22.25×19.1×19.1 |
| BTH400-01 | 33–50 GHz | ≤1.3 | ≤0.4 dB | WR-22 | 2.4mm | 21.35×19.1×19.1 |
| BTH500-01 | 40–60 GHz | ≤1.35 | ≤0.4 dB | WR-19 | 1.85mm | 21.35×19.1×19.1 |
| BTH620-01 |
50–67 GHz |
≤1.4 |
≤0.2 dB |
WR-15 |
1.0mm |
20.3×19.1×19.1 |
Submit your requirements and our engineers will customize a solution for you within 24 hours