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Description & Specification
WC-28-UBR-A6-KF WR-28 Waveguide to Coaxial Adapter
Ka-Band Precision Transition | 26.5 - 40.0 GHz | Model: WC-28-UBR-A6-KF
The WC-28-UBR-A6-KF is a precision Type: A6 Ka-band waveguide to coaxial adapter professionally engineered and manufactured by Fei Teng Wireless Technology Co., Ltd. (FT-RF) in Taiwan. Operating across the 26.5 GHz to 40.0 GHz frequency range, it provides an efficient and low-loss transition between standard WR-28 rectangular waveguides and 50-ohm 2.92mm (K-type) coaxial systems. Built with tight mechanical tolerances, it delivers a low maximum VSWR of 1.25:1 with outstanding repeatability. Featuring a compact aluminum body with an integrated square UBR flange (UBR320 / FBP320 / UG-599/U pattern) and a passivated stainless steel K-Female connector, it handles up to 20W CW / 400W Peak power, serving as an essential transition for satellite communications, 5G backhaul development, and precision laboratory RF measurements.
Technical Specifications
| Frequency Range | 26.5 - 40.0 GHz |
| Waveguide Size | WR-28 (WG22 / R320) |
| Flange Type | UBR (UBR320 / FBP320 / UG-599/U Compatible) |
| Connector Interface | 2.92mm K-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) | 21.90 x 19.10 x 16.50 mm |
| Component Weight | 20 g (Estimated ~13.70 g) |
| Body Material | Aerospace Aluminum Alloy (Surface Treated) |
| Connector Material | Passivated Stainless Steel |
| Flange Hole Pattern | 4 x 3.00 mm Thru Holes (12.7 x 13.46 mm Spacing) |
| 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
Tight Mechanical Tolerance
Precision CNC machined structure ensures low insertion loss and dependable signal transition across Ka-band.
Stainless Steel K-Connector
Durable 2.92mm K-Female interface provides exceptional mechanical strength and repeatable testing accuracy.
Ultra-Compact Architecture
Engineered with a streamlined 21.90 mm length and lightweight aluminum body for tight system integration.
Taiwanese Precision
Manufactured in Taiwan under strict quality control to satisfy international microwave testing standards.
Contact FT-RF Engineering Division
Contact our technical engineering division today to request official quotes or customized mounting solutions.
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