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High Power Waveguide Rotating Joint

High Power Waveguide Rotating Joint

Dolph Microwave High Power Waveguide Rotating Joint​​ enables seamless transfer of high-power RF signals (up to ​​12,000 Watts​​ at S-band) between stationary and rotating assemblies in critical radar and satellite systems. Engineered with ​​double bearings​​, ​​precision seals​​ (IP65 rating), and ​​≤ 0.2 dB insertion loss​​, it ensures exceptional performance, durability, and reliability across ​​1.72 to 40.0 GHz​​ frequencies.

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High-power rotary joints matched to the RF path

The standard family covers 1.72–40.0 GHz with 10% operating bandwidth. Published model ratings run from 300 W to 12,000 W average power, with maximum insertion loss of 0.2–0.25 dB and IP65 protection.

1.72–40.0 GHzPublished frequency range
300–12,000 WAverage power by model
0.2–0.25 dBMaximum insertion loss
IP65Published ingress protection
Request a Model CheckCustom High-Power Components
Dolph Microwave high power waveguide rotating joint with rectangular waveguide flanges
Dolph Microwave WR75 waveguide rotary joint examples

Send the values that determine the build

Frequency and waveguide size

Send the complete operating band and required waveguide size. The listed high-power models use 10% operating bandwidth.

Average and peak power

State CW or average power, peak power, pulse width and duty condition. Do not select from average power alone.

Joint geometry

Choose the required I-, L- or U-style routing around the rotation axis and provide the available installation envelope.

Both flange interfaces

Confirm cover or grooved construction and the exact mating designation on each side.

Environment

Standard rows list IP65. State any pressurization, sealing, temperature or finish requirement that must be reviewed.

Drawing or envelope

Send a drawing, sketch or dimensional limit when the catalog geometry does not fit the assembly.

Send Frequency, Power and Flange Data

Choose the arm layout around the rotation axis

I-, L- and U-style models are published across the standard matrix. Final geometry should be checked against the installation envelope and flange orientation.

I

In-line

Both waveguide arms remain collinear with the rotation axis.

L

Right-angle on one side

One arm turns perpendicular to the rotation axis.

U

Right-angle on both sides

Both arms are perpendicular to the rotation axis.

Need the nearest standard model before you issue an RFQ?

Send frequency range, waveguide size, I/L/U layout, both flanges, average/peak power and the available envelope.

Get a Model Recommendation

Standard model matrix

All published model rows are retained below. On mobile, swipe horizontally to review every parameter.

Ask About a Listed Model
MODELFREQ RANGE (GHz)OPERATING BWVSWR (Max)IL(dB) (Max)AVG. POWER (W)FLANGES TYPEINGRESS PROTECTIONMATERIALFINISHDATASHEET
COVERGROOVEDPDFSTEP
DH-22WHPJI1.72-2.6110%1.15:10.212000UDR32PDR32IP65Al/CuChromate/PaintedPDFSTEP
DH-22WHPJL1.72-2.6110%1.15:10.212000UDR32PDR32IP65Al/CuChromate/PaintedPDFSTEP
DH-22WHPJU1.72-2.6110%1.15:10.212000UDR32PDR32IP65Al/CuChromate/PaintedPDFSTEP
DH-32WHPJI2.60-3.9510%1.15:10.210000UDR32PDR32IP65Al/CuChromate/PaintedPDFSTEP
DH-32WHPJL2.60-3.9510%1.15:10.210000UDR32PDR32IP65Al/CuChromate/PaintedPDFSTEP
DH-32WHPJU2.60-3.9510%1.15:10.210000UDR32PDR32IP65Al/CuChromate/PaintedPDFSTEP
DH-40WHPJI3.22-4.9010%1.15:10.23000UDR40PDR40IP65Al/CuChromate/PaintedPDFSTEP
DH-40WHPJL3.22-4.9010%1.15:10.23000UDR40PDR40IP65Al/CuChromate/PaintedPDFSTEP
DH-40WHPJU3.22-4.9010%1.15:10.23000UDR40PDR40IP65Al/CuChromate/PaintedPDFSTEP
DH-48WHPJI3.94-5.9910%1.15:10.23000UDR48PDR348IP65Al/CuChromate/PaintedPDFSTEP
DH-48WHPJL3.94-5.9910%1.15:10.23000UDR48PDR348IP65Al/CuChromate/PaintedPDFSTEP
DH-48WHPJU3.94-5.9910%1.15:10.23000UDR48PDR348IP65Al/CuChromate/PaintedPDFSTEP
DH-58WHPJI4.64-7.0510%1.15:10.23000UDR58PDR58IP65Al/CuChromate/PaintedPDFSTEP
DH-58WHPJL4.64-7.0510%1.15:10.23000UDR58PDR58IP65Al/CuChromate/PaintedPDFSTEP
DH-58WHPJU4.64-7.0510%1.15:10.23000UDR58PDR58IP65Al/CuChromate/PaintedPDFSTEP
DH-70WHPJI5.38-8.1710%1.15:10.22000UDR70PDR70IP65Al/CuChromate/PaintedPDFSTEP
DH-70WHPJL5.38-8.1710%1.15:10.22000UDR70PDR70IP65Al/CuChromate/PaintedPDFSTEP
DH-70WHPJU5.38-8.1710%1.15:10.22000UDR70PDR70IP65Al/CuChromate/PaintedPDFSTEP
DH-84WHPJI6.57-9.9910%1.2:10.22000UDR84/UBR84PDR84/PBR84IP65Al/CuChromate/PaintedPDFSTEP
DH-84WHPJL6.57-9.9910%1.2:10.22000UDR84/UBR84PDR84/PBR84IP65Al/CuChromate/PaintedPDFSTEP
DH-84WHPJU6.57-9.9910%1.2:10.22000UDR84/UBR84PDR84/PBR84IP65Al/CuChromate/PaintedPDFSTEP
DH-100WHPJI8.20-12.410%1.2:10.22000UDR100/UBR100PDR100/PBR100IP65Al/CuChromate/PaintedPDFSTEP
DH-100WHPJL8.20-12.410%1.2:10.22000UDR100/UBR100PDR100/PBR100IP65Al/CuChromate/PaintedPDFSTEP
DH-100WHPJU8.20-12.410%1.2:10.22000UDR100/UBR100PDR100/PBR100IP65Al/CuChromate/PaintedPDFSTEP
DH-120WHPJI9.84-15.010%1.2:10.21000UBR120PBR120IP65Al/CuChromate/PaintedPDFSTEP
DH-120WHPJL9.84-15.010%1.2:10.21000UBR120PBR120IP65Al/CuChromate/PaintedPDFSTEP
DH-120WHPJU9.84-15.010%1.2:10.21000UBR120PBR120IP65Al/CuChromate/PaintedPDFSTEP
DH-140WHPJI11.9-18.010%1.25:10.22000UBR140PBR140IP65Al/CuChromate/PaintedPDFSTEP
DH-140WHPJL11.9-18.010%1.25:10.22000UBR140PBR140IP65Al/CuChromate/PaintedPDFSTEP
DH-140WHPJU11.9-18.010%1.25:10.22000UBR140PBR140IP65Al/CuChromate/PaintedPDFSTEP
DH-180WHPJI14.5-22.010%1.25:10.25500UBR180PBR180IP65Al/CuChromate/PaintedPDFSTEP
DH-180WHPJL14.5-22.010%1.25:10.25500UBR180PBR180IP65Al/CuChromate/PaintedPDFSTEP
DH-180WHPJU14.5-22.010%1.25:10.25500UBR180PBR180IP65Al/CuChromate/PaintedPDFSTEP
DH-220WHPJI17.6-26.710%1.25:10.25500UBR220PBR220IP65Al/CuChromate/PaintedPDFSTEP
DH-220WHPJL17.6-26.710%1.25:10.25500UBR220PBR220IP65Al/CuChromate/PaintedPDFSTEP
DH-220WHPJU17.6-26.710%1.25:10.25500UBR220PBR220IP65Al/CuChromate/PaintedPDFSTEP
DH-260WHPJI21.7-33.010%1.25:10.25300UBR260PBR260IP65Al/CuChromate/PaintedPDFSTEP
DH-260WHPJL21.7-33.010%1.25:10.25300UBR260PBR260IP65Al/CuChromate/PaintedPDFSTEP
DH-260WHPJU21.7-33.010%1.25:10.25300UBR260PBR260IP65Al/CuChromate/PaintedPDFSTEP
DH-320WHPJI26.3-40.010%1.25:10.25300UBR320PBR320IP65Al/CuChromate/PaintedPDFSTEP
DH-320WHPJL26.3-40.010%1.25:10.25300UBR320PBR320IP65Al/CuChromate/PaintedPDFSTEP
DH-320WHPJU26.3-40.010%1.25:10.25300UBR320PBR320IP65Al/CuChromate/PaintedPDFSTEP

The published range uses Al/Cu construction, Chromate/Painted finish and IP65 protection. Confirm the final model against your exact RF, power and mechanical conditions.

Part Number Guide: DH-100WHPJI/L/UPMA400

"100"—Waveguide SizeWHP90
"WHPJ"—Waveguide TypeHigh Power Waveguide Rotating Joint
"I/L/U"— Joint StyleI, L, U-Shape
"P"— Flange TypeRectangular Flat
"M"— Flange TypeRectangular Grooved
"A/C"— MaterialAluminium, Cu
"400"— Power Rating400 W CW.
Note: All Dolph-MW models include an surtec/corrosion protection treatment and are painted flat black. Flanges are unplated, polished and surtec. Other finishes and paint colors are available upon request.
High power waveguide rotating joint shown with Dolph Microwave part number guide

Manufacturing and test support

Dolph Microwave lists CNC machining, turning, waveguide forming and bending, soldering and brazing of copper, copper alloys and aluminium, anodising and passivation, electrolytic and electroless plating, diamond grinding and electroforming among its manufacturing capabilities.

Build around your drawing

For non-standard geometry, Dolph can review custom waveguide assemblies from detailed drawings or simple sketches.

RF verification

The high-power rotating-joint product information states simulation and physical testing, including verification at the specified maximum peak-power condition before delivery.

View ManufacturingCustom Waveguide Assemblies
Dolph Microwave CNC machining equipment

CNC machining

Milling and turning support for waveguide component manufacture.

Dolph Microwave RF testing laboratory

Test laboratory

RF measurement support for microwave components.

Dolph Microwave microwave chamber

Microwave chamber

Published in-house measurement capability for RF and antenna work.

Have a drawing, replacement part or non-standard flange?

Send the drawing with the RF band and power data. Dolph can check the standard range first, then review a custom build where needed.

Send Your Drawing
Dolph Microwave waveguide rotary joint product

Related parts for the same waveguide line

Use the adjacent product family when the interface or power function changes.

Waveguide Rotary JointUse the standard rotary-joint range when the high-power ratings above are not required.High-Power Waveguide Coaxial AdapterUse when the RF path must transition between rectangular waveguide and coaxial interface.High Power TerminationUse for a matched high-power load at the end of a rectangular waveguide path.Seamless Flexible WGUse where installation alignment or routing needs a flexible waveguide section.Waveguide Flange Standard EIA & IECCheck flange families and designation conventions before mating the rotary joint.Standard Waveguide ComponentsBrowse bends, transitions, switches, pressure parts, couplers, loads and related standard waveguide hardware.

Engineering references

Waveguide Power Handling

Check CW power, peak power, duty cycle, breakdown limits and cooling before final component selection.

Waveguide Flange Size Guide

Compare EIA and IEC flange types and confirm the mating interface before release.

Waveguide Frequency Bands Chart

Cross-check the WR size and operating band when reviewing the model matrix.

Factory history and published support

Dolph Microwave states that it has operated since 2001 in Xi’an and that its Quality Manual and Quality Procedure use ISO 9001:2015. The published product warranty covers defective material and workmanship for one year from delivery, subject to the stated warranty terms.

About Dolph MicrowaveDiscuss Your Requirement
Dolph Microwave CNC workshop in Xi'an

Product and flange reference files

The original download links are retained for the high-power termination reference and flange designation information.

High Power TerminationOriginal product PDFFLANGE TYPE DESIGNATIONS INFORMATIONOriginal IEC and EIA flange reference PDF
Request Quote or Model Check

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