WR90 Waveguide to Coax Adapter END Launch, 8.2GHz to 12.4GHz, N-Female Connector, UBR Flange

Model No: WC-090-UBR-E1-NF

FT-RF          
Frequency Range: 8.2 - 12.4 GHz
Component Type: End Launch Waveguide to Coax Adapter
Waveguide Size: WR-90 (UG-39/U / N-Female)
V.S.W.R (Max): 1.3 : 1
Power Handling (CW): 300 Watts
Stock: 0
2026/10/12
Quantity:
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WR90 8.2 to 12.4GHz N-Female End Launch Waveguide to Coax Adapter

X-Band Precision In-Line Transition | Flange: UBR / UG-39/U | Model: WC-090-UBR-E1-NF
The WC-090-UBR-E1-NF is a high-performance Type: E1 X-band end launch rectangular waveguide to coaxial adapter professionally engineered and manufactured by Fei Teng Wireless Technology Co., Ltd. (FT-RF) in Taiwan. Operating across the 8.2 GHz to 12.4 GHz frequency range, it provides an in-line transition between standard WR-90 (WG16 / R100) rectangular waveguides and 50-ohm N-Female coaxial connections. Featuring a typical maximum VSWR of 1.3:1, this adapter is CNC machined from durable aluminum alloy with an integrated square UBR / UG-39/U flange and a passivated stainless steel N-Female connector. Supporting high continuous input power up to 300 Watts, it serves as a dependable transition for microwave telecommunications, test instrumentation, and high-power laboratory setups.
Technical Specifications
Frequency Range 8.2 - 12.4 GHz
Waveguide Size WR-90 (WG16 / R100)
Flange Type UBR / UG-39/U Compatible
Connector Interface N-Female (End Launch In-Line)
Impedance 50 Ω
V.S.W.R (Max) 1.3 : 1
Power Handling (CW) 300 Watts
Mechanical & Physical Data
Dimensions (L x W x H) 59.80 x 41.40 x 41.40 mm
Component Weight 96 g (Estimated ~90.34 g)
Body Material Precision CNC Aluminum Alloy
Connector Material Passivated Stainless Steel
Flange Hole Pattern 4 x 4.17 mm Thru Holes (30.99 x 32.51 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

In-Line End Launch Design

Axial coaxial configuration streamlines waveguide transitions for benchtop measurement setups.

High Power Rating

Handles robust power levels up to 300W continuous CW across the complete 8.2 to 12.4 GHz X-band.

Durable Stainless N-Connector

Passivated stainless steel N-Female interface provides exceptional mechanical strength and mating durability.

Taiwanese Precision

Engineered and manufactured in Taiwan to guarantee tight tolerances and reproducible metrology results.

Contact FT-RF Engineering Division

Contact our technical engineering division today to request official quotes or customized mounting solutions.

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