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Description & Specification
WC-28-UBR-A1-VF WR-28 Waveguide to Coaxial Adapter
Millimeter-Wave Precision Transition | 26.5 - 54.0 GHz | Model: WC-28-UBR-A1-VF
The WC-28-UBR-A1-VF is a high-performance millimeter-wave waveguide to coaxial adapter professionally engineered and manufactured by Fei Teng Wireless Technology Co., Ltd. (FT-RF) in Taiwan. Operating across the extended frequency spectrum from 26.5 GHz to 54.0 GHz, it provides an efficient and low-loss transition between standard WR-28 rectangular waveguides and 50-ohm 1.85mm (V-type) coaxial systems. Built with tight mechanical tolerances, it delivers a low maximum VSWR of 1.25:1 with exceptional repeatability. Featuring a lightweight aluminum body with an integrated square UBR flange (UG-599/U pattern) and a durable passivated stainless steel V-Female connector, it handles power levels up to 20W CW / 400W Peak, providing an industry-standard solution for 5G/6G research, satellite communications, and high-frequency laboratory testing.
Technical Specifications
| Frequency Range | 26.5 - 54.0 GHz |
| Waveguide Size | WR-28 (WG22 / R320) |
| Flange Type | UBR (UG-599/U Compatible Square Flange) |
| Connector Interface | 1.85mm V-Female |
| Impedance | 50 Ω |
| V.S.W.R (Max) | 1.25 : 1 |
| Continuous Power (CW) | 20 Watts |
| Peak Power Handling | 400 Watts |
Mechanical & Physical Data
| Dimensions (L x W x H) | 30.05 x 19.10 x 26.00 mm |
| Component Weight | 10 g (Estimated ~8.93 g) |
| Body Material | Aerospace Aluminum Alloy (Surface Treated) |
| Connector Material | Passivated Stainless Steel |
| Flange Screws Interface | 4 x 2.95 mm Thru Holes (P.C.D Pattern) |
| Country of Origin | Taiwan |
Insertion Loss Calibration Plot
Calibration in Progress
Laboratory measurement data pending official upload. Available upon request.
VSWR Performance Curve
Calibration in Progress
Laboratory measurement data pending official upload. Available upon request.
Return Loss Calibration Plot
Calibration in Progress
Laboratory measurement data pending official upload. Available upon request.
Key Design & Feature Highlights
Extended Millimeter-Wave Range
Covers continuous broadband operation from 26.5 GHz up to 54 GHz for next-generation RF applications.
Stainless Steel V-Connector
Premium 1.85mm V-Female interface delivers repeatable signal integrity and superior mechanical strength.
Compact & Lightweight Build
Precision CNC machined from aerospace aluminum weighing only 10 g with specialized surface passivation.
Taiwanese Precision
Engineered and manufactured in Taiwan to provide dependable laboratory accuracy and metrology performance.
Contact FT-RF Engineering Division
Contact our technical engineering division today to request official quotes or customized mounting solutions.
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