Narda-MITEQ 4857/4858/4859/4862/4864 & 852/856/857/859 series 2.6–40GHz waveguide directional couplers
Narda-MITEQ Cross-Guide Directional Couplers
2.6 – 40 GHz | 30 dB Nominal Coupling | 20 dB Min. Directivity
Key Features
Full waveguide coverage from WR-284 (2.6 GHz) to WR-28 (40 GHz)
Ultra-flat coupling: ±0.5 dB deviation over entire band
Low VSWR: ≤1.05 (main line) / ≤1.25 (coupled port)
High directivity: 20 dB minimum, typical >25 dB
Choice of SMA, 2.92 mm (K) or Type N female connectors
Standard military flanges (UG, MIL-F-3922) for drop-in replacement
Aluminium body, conductive-oxide finish; stainless-steel flanges
一、SMA / 2.92 mm Connector Series
Frequency Range: 7.05 GHz to 40 GHz (covering X, Ku, K, Ka bands)
Typical Applications: Suitable for high-frequency, high-density integrated systems. The 2.92 mm connector offers superior performance in the Ka band.
Model
| Model | Waveguide | Frequency/GHz | Flange | Length × Width × Height/inch | COUPLING (dB) | DIRECTIVITY (dB min.) | VSWR |
| 4857 | WR112 | 7.05–10.0 | UG-138/U | 4.20×2.10×3.00 | 30 | 20 | ≤1.25 |
| 4858 | WR90 | 8.20–12.4 | UG-135/U | 4.00×2.00×2.75 | 30 | 20 | ≤1.25 |
| 4859 | WR75 | 10.0–15.0 | MIL-F-3922/70-017 | 3.75×1.87×2.50 | 30 | 20 | ≤1.25 |
| 4862 | WR42 | 18.0–26.5 | UG-597/U | 2.20×1.10×1.50 | 30 | 20 | ≤1.25 |
| 4864 | WR28 | 26.5–40.0 | UG-599/U | 2.00×1.00×2.50 | 30 | 20 | ≤1.25 |
二、Type N connector series
Frequency range: 2.6 GHz to 15 GHz (covering S, C, X, Ku bands)
Typical applications: Suitable for low-frequency bands, systems requiring high power capacity or universal N-junction interfaces.
Model list:
| Model | Waveguide | Frequency/GHz | Flange | Length × Width × Height/inch | COUPLING (dB) | DIRECTIVITY (dB min.) | VSWR |
| 852 | WR284 | 2.60–3.95 | UG-584/U | 7.50×3.75×5.00 | 30 | 20 | ≤1.25 |
| 856 | WR137 | 5.85–8.20 | UG-441/U | 6.00×3.00×4.00 | 30 | 20 | ≤1.25 |
| 857 | WR112 | 7.05–10.0 | UG-138/U | 4.20×2.10×3.00 | 30 | 20 | ≤1.25 |
| 859 | WR75 | 10.0–15.0 | MIL-F-3922/70-017 | 3.75×1.87×2.50 | 30 | 20 | ≤1.25 |
Typical Applications
On-line power monitoring in radar & EW transmit chains
Sampling port for satellite HPA redundancy loops
Broadband test-lab reference splitting
Industrial microwave heating forward/reflected power protection
Core Innovations Trade Limited is the authorized agent for MITEQ products.If you need to know more about and purchase MITEQ products, you can consult CORE customer service or fill out the RFQ.
