Waveguide Straights and Transitions
Waveguide straights and transitions are fundamental components in microwave systems, facilitating efficient signal propagation and enabling seamless connectivity between different waveguide sections or interfaces. These parts ensure minimal signal loss and are essential for maintaining the integrity and performance of communication and radar systems.
Published Frequency
0.84–40.0 GHz
Waveguide Range
WRD840–WRD180
Published VSWR
1.15:1 or 1.20:1
Catalog IL*
0.15–1.50 dB/m
Straight Length
Up to 1500 mm
Materials
Aluminum / Copper
Double-Ridged Interconnects
Use Straight Sections for Length and Transitions for Interface Changes
The published table covers double-ridged straight waveguide sections. Transition geometry is project-specific and should be defined by the two mating waveguide interfaces, overall length and flange arrangement.
Straight Sections
Maintain the Same WRD Interface
Straight sections extend a double-ridged transmission path between matching waveguide families. Define the finished length, flange type at each end, material and finish.
Transition Sections
Connect Different Waveguide Interfaces
A transition should be specified from the actual input and output interfaces. Do not select it from the straight-section table alone.
Published Straight-Section Data
Double-Ridged Straight Waveguide Model Range
The table keeps the current catalog values and reserves the first column for individual PDF links.
Swipe horizontally to view all columns.
| WRD Family / Model | Frequency | VSWR | Catalog IL* | Length | Cover Flange | Grooved Flange | Material | Finish | RoHS & REACH |
|---|---|---|---|---|---|---|---|---|---|
| WRD840 / DH-840DRWAL… | 0.84–2.0 | 1.15:1 | 0.20 | Up to 1500 mm | FPWRD840U24 | FMWRD840U24 | Al/Cu | Chromate / Painted | Comply |
| WRD150 / DH-150DRWAL… | 1.5–3.6 | 1.15:1 | 0.15 | Up to 1500 mm | FPWRD150D24 | FMWRD150D24 | Al/Cu | Chromate / Painted | Comply |
| WRD200 / DH-200DRWAL… | 2.0–4.8 | 1.15:1 | 0.15 | Up to 1500 mm | FPWRD200D24 | FMWRD200D24 | Al/Cu | Chromate / Painted | Comply |
| WRD250 / DH-250DRWAL… | 2.6–7.8 | 1.15:1 | 0.15 | Up to 1500 mm | FPWRD250D30 | FMWRD250D30 | Al/Cu | Chromate / Painted | Comply |
| WRD350 / DH-350DRWAL… | 3.5–8.2 | 1.15:1 | 0.25 | Up to 1500 mm | FPWRD350D24 | FMWRD350D24 | Al/Cu | Chromate / Painted | Comply |
| WRD475 / DH-475DRWAL… | 4.75–11.0 | 1.15:1 | 0.20 | Up to 1500 mm | FPWRD475D24 | FMWRD475D24 | Al/Cu | Chromate / Painted | Comply |
| WRD500 / DH-500DRWAL… | 5.0–18.0 | 1.15:1 | 0.50 | Up to 1500 mm | FPWRD500D36 | FMWRD500D36 | Al/Cu | Chromate / Painted | Comply |
| WRD580 / DH-580DRWAL… | 5.8–16.0 | 1.15:1 | 0.35 | Up to 1500 mm | FPWRD580D28 | FMWRD580D28 | Al/Cu | Chromate / Painted | Comply |
| WRD650 / DH-650DRWAL… | 6.5–18.0 | 1.15:1 | 0.35 | Up to 1500 mm | FPWRD650D28 | FMWRD650D28 | Al/Cu | Chromate / Painted | Comply |
| WRD700 / DH-700DRWAL… | 7.0–18.5 | 1.15:1 | 0.40 | Up to 1500 mm | FPWRD700D26 | FMWRD700D26 | Al/Cu | Chromate / Painted | Comply |
| WRD750 / DH-750DRWAL… | 7.5–18.0 | 1.15:1 | 0.60 | Up to 1500 mm | FPWRD750D24 | FMWRD750D24 | Al/Cu | Chromate / Painted | Comply |
| WRD110 / DH-110DRWAL… | 11.0–26.5 | 1.20:1 | 0.75 | Up to 1500 mm | FPWRD110C24 | FMWRD110C24 | Al/Cu | Chromate / Painted | Comply |
| WRD180 / DH-180DRWAL… | 18.0–40.0 | 1.20:1 | 1.50 | Up to 1500 mm | FPWRD180C24 | FMWRD180C24 | Al/Cu | Chromate / Painted | Comply |
*Catalog IL field: the product table labels this value in dB/m. Confirm the applicable loss definition, test length, measurement method and acceptance limit in the approved quotation or drawing.
Mechanical Interfaces
Cover and Grooved Double-Ridged Flanges
FPWRD Cover Flange
Use the model-specific FPWRD designation when a rectangular flat or cover-style interface is required.
FMWRD Grooved Flange
Use the corresponding FMWRD designation for the rectangular grooved interface.
Ordering Code
Part Number Interpretation
Applications
Where Straight and Transition Sections Are Used
Radar Assemblies
Connect double-ridged components while maintaining the required routing length.
Broadband Test Systems
Build repeatable waveguide paths between calibration and measurement hardware.
Antenna Feed Networks
Join feed, coupler, filter and adapter sections inside a broadband assembly.
Custom RF Integration
Transition between different mechanical interfaces where a standard section is not sufficient.
Specification-Based Quotation
Submit the WRD Family, Length and Both End Interfaces
For a transition, include drawings or dimensions for both mating interfaces and identify critical envelope, tolerance and performance requirements.
| MODEL | FREQ. RANGE (GHz) | WG Size | VSWR | IL (dB/m) | FLANGES TYPE | LENGTH (mm) | MATERIAL | FINISH | ROHS & REACH | DATASHEET | ||
| COVER | GROOVED | |||||||||||
| DH-840DRWAL… | 0.84-2.0 | WRD840 | 1.15:1 | 0.2 | FPWRD840U24 | FMWRD840U24 | Up to 1500 | Al/Cu | Chromate/Painted | Comply | STEP | |
| DH-150DRWAL… | 1.5-3.6 | WRD150 | 1.15:1 | 0.15 | FPWRD150D24 | FMWRD150D24 | Up to 1500 | Al/Cu | Chromate/Painted | Comply | STEP | |
| DH-200DRWAL… | 2.0-4.8 | WRD200 | 1.15:1 | 0.15 | FPWRD200D24 | FMWRD200D24 | Up to 1500 | Al/Cu | Chromate/Painted | Comply | STEP | |
| DH-250DRWAL… | 2.6-7.8 | WRD250 | 1.15:1 | 0.15 | FPWRD250D30 | FMWRD250D30 | Up to 1500 | Al/Cu | Chromate/Painted | Comply | STEP | |
| DH-350DRWAL… | 3.5-8.2 | WRD350 | 1.15:1 | 0.25 | FPWRD350D24 | FMWRD350D24 | Up to 1500 | Al/Cu | Chromate/Painted | Comply | STEP | |
| DH-475DRWAL… | 4.75-11.0 | WRD475 | 1.15:1 | 0.2 | FPWRD475D24 | FMWRD475D24 | Up to 1500 | Al/Cu | Chromate/Painted | Comply | STEP | |
| DH-500DRWAL… | 5.0-18.0 | WRD500 | 1.15:1 | 0.5 | FPWRD500D36 | FMWRD500D36 | Up to 1500 | Al/Cu | Chromate/Painted | Comply | STEP | |
| DH-580DRWAL… | 5.8-16.0 | WRD580 | 1.15:1 | 0.35 | FPWRD580D28 | FMWRD580D28 | Up to 1500 | Al/Cu | Chromate/Painted | Comply | STEP | |
| DH-650DRWAL… | 6.5-18.0 | WRD650 | 1.15:1 | 0.35 | FPWRD650D28 | FMWRD650D28 | Up to 1500 | Al/Cu | Chromate/Painted | Comply | STEP | |
| DH-700DRWAL… | 7.0-18.5 | WRD700 | 1.15:1 | 0.4 | FPWRD700D26 | FMWRD700D26 | Up to 1500 | Al/Cu | Chromate/Painted | Comply | STEP | |
| DH-750DRWAL… | 7.5-18.0 | WRD750 | 1.15:1 | 0.6 | FPWRD750D24 | FMWRD750D24 | Up to 1500 | Al/Cu | Chromate/Painted | Comply | STEP | |
| DH-110DRWAL… | 11.0-26.5 | WRD110 | 1.2:1 | 0.75 | FPWRD110C24 | FMWRD110C24 | Up to 1500 | Al/Cu | Chromate/Painted | Comply | STEP | |
| DH-180DRWAL… | 18.0-40.0 | WRD180 | 1.2:1 | 1.5 | FPWRD180C24 | FMWRD180C24 | Up to 1500 | Al/Cu | Chromate/Painted | Comply | STEP | |
| Part Number Guide: DH-840DRWAL100PMA "840DR"—Waveguide Size | WRD840 "WAL"—Waveguide Type | Straight Waveguide "100"— Length | 100 mm "P"— Flange Type | Rectangular Flat "M"— Flange Type | Rectangular Grooved "A/C"— Material | Aluminium, Cu |
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| 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. |
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