Dolph Microwave · Standard Rectangular Waveguide
Waveguide Twist
WR430–WR10
Match the polarization orientation between rectangular waveguide interfaces with 20 listed models spanning 1.72–112 GHz. Choose by waveguide size, model-specific VSWR and insertion loss, flange designation and minimum length; specify the twist angle and direction for your assembly.
Configuration & fit
Select the twist that matches your interface.
Flange designation, rotation angle, twist direction and minimum available length should all match the mating waveguide assembly.
WR430 through WR10
Compare the individual frequency span and WR size before selecting a model. The complete 20-model table is below.
Standard and requested angles
The source lists 90° as the default, with 30°, 45°, 60° and other requested angles described in the product overview.
Flange & handedness options
Check cover/grooved flange codes row by row. Right- and left-handed 45° configurations are described in the original overview.
Complete live-page model data
Waveguide twist specifications
All 20 DH model rows are reproduced individually, including original codes, figures, finish, compliance labels and PDF / STEP availability labels.
Frequency, VSWR and insertion loss are model-specific figures as published on this product page. Minimum length is not the ordered length. For the last five models, the source provides one combined flange designation rather than distinct cover and grooved values.
| Model | Freq. range (GHz) | WG size | VSWR | IL (dB) | Flanges type | Min. length (mm) | Material | Finish | RoHS / REACH | Datasheet | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Cover | Grooved | ||||||||||
| DH-22WTA… | 1.72-2.61 | WR430 | 1.1:1 | 0.15 | UDR22 | PDR22 | 800 | Al/Cu | Chromate/Painted | Comply | PDFSTEP |
| DH-26WTA… | 2.17-3.3 | WR340 | 1.1:1 | 0.15 | UDR26 | PDR26 | 400 | Al/Cu | Chromate/Painted | Comply | PDFSTEP |
| DH-32WTA… | 2.6-3.95 | WR284 | 1.1:1 | 0.15 | UDR32 | PDR32 | 300 | Al/Cu | Chromate/Painted | Comply | PDFSTEP |
| DH-40WTA… | 3.22-4.9 | WR229 | 1.1:1 | 0.15 | UDR40 | PDR40 | 250 | Al/Cu | Chromate/Painted | Comply | PDFSTEP |
| DH-48WTA… | 3.94-5.99 | WR187 | 1.1:1 | 0.15 | UDR48 | PDR348 | 200 | Al/Cu | Chromate/Painted | Comply | PDFSTEP |
| DH-58WTA… | 4.64-7.05 | WR159 | 1.1:1 | 0.15 | UDR58 | PDR58 | 170 | Al/Cu | Chromate/Painted | Comply | PDFSTEP |
| DH-70WTA… | 5.38-8.17 | WR137 | 1.1:1 | 0.15 | UDR70 | PDR70 | 150 | Al/Cu | Chromate/Painted | Comply | PDFSTEP |
| DH-84WTA… | 6.57-9.99 | WR112 | 1.1:1 | 0.15 | UDR84/UBR84 | PDR84/PBR84 | 120 | Al/Cu | Chromate/Painted | Comply | PDFSTEP |
| DH-100WTA… | 8.2-12.5 | WR90 | 1.1:1 | 0.15 | UDR100/UBR100 | PDR100/PBR100 | 60 | Al/Cu | Chromate/Painted | Comply | PDFSTEP |
| DH-120WTA… | 9.84-15 | WR75 | 1.1:1 | 0.15 | UBR120 | PBR120 | 60 | Al/Cu | Chromate/Painted | Comply | PDFSTEP |
| DH-140WTA… | 11.9-18 | WR62 | 1.1:1 | 0.15 | UBR140 | PBR140 | 50 | Al/Cu | Chromate/Painted | Comply | PDFSTEP |
| DH-180WTA… | 14.5-22 | WR51 | 1.1:1 | 0.15 | UBR180 | PBR180 | 50 | Al/Cu | Chromate/Painted | Comply | PDFSTEP |
| DH-220WTA… | 17.6-26.7 | WR42 | 1.1:1 | 0.15 | UBR220 | PBR220 | 50 | Al/Cu | Chromate/Painted | Comply | PDFSTEP |
| DH-260WTA… | 21.7-33 | WR34 | 1.15:1 | 0.2 | UBR260 | PBR260 | 50 | Al/Cu | Chromate/Painted | Comply | PDFSTEP |
| DH-320WTA… | 26.3-40 | WR28 | 1.15:1 | 0.2 | UBR320 | PBR320 | 50 | Al/Cu | Chromate/Painted | Comply | PDFSTEP |
| DH-400WTA… | 32.9-50.1 | WR22 | 1.15:1 | 0.2 | FUGP400/UG-383U/M | 50 | Al/Cu | Chromate/Painted | Comply | PDFSTEP | |
| DH-500WTA… | 39.2-59.6 | WR19 | 1.15:1 | 0.25 | FUGP500/UG-383U/M | 50 | Al/Cu | Chromate/Painted | Comply | PDFSTEP | |
| DH-620WTA… | 49.8-75.8 | WR15 | 1.15:1 | 0.25 | FUGP620/UG-385U/M | 50 | Al/Cu | Chromate/Painted | Comply | PDFSTEP | |
| DH-740WTA… | 60.5-91.9 | WR12 | 1.15:1 | 0.3 | FUGP740/UG-387U/M | 50 | Al/Cu | Chromate/Painted | Comply | PDFSTEP | |
| DH-900WTA… | 73.8-112 | WR10 | 1.15:1 | 0.3 | FUGP900/UG-387U/M | 50 | Al/Cu | Chromate/Painted | Comply | PDFSTEP | |
“Comply,” “Al/Cu,” “Chromate/Painted,” PDF and STEP are reproduced as they appear in the source table; confirm current compliance documentation and model-specific files for your requested configuration.
Manufacturer specification PDF ↗Mechanical & ordering details
Specify every interface detail.
Use the drawing labels and example part-number fields to communicate the intended assembly; final code and dimensions require supplier confirmation.
Construction, flanges & finish
- Material
- Al/Cu in all 20 live-page model rows; the introductory specification also lists Oxygen Free Hard Copper and Copper Alloy.
- Flange types
- Cover and grooved codes in the model table; the overview additionally lists UG, CPR and other options.
- Finish
- Chromate/Painted in every model row; corrosion protection with a black/grey top coat is described in the overview.
- Standard treatment
- Surtec/corrosion protection, flat black paint; flanges unplated, polished and Surtec-treated per the original note.
- Other finishes
- Other finishes and paint colors are available on request.
- Twist direction
- Direction is Dolph Microwave’s choice unless specified; right- and left-handed 45° configurations are described in the overview.
- Twist angle
- 90° default; other angles on request. Original introductory specification: 0°–90°, with 30°, 45°, 60° and 90° listed as standard twists.
Live-page part number guide
- “840DR”
- Waveguide size | WRD840 (literal original guide entry; inconsistent with the DH-100 example and WR430–WR10 table)
- “WTA”
- Waveguide type | Rectangular Right-Handed Twisted Waveguide
- “WLTA”
- Waveguide type | Rectangular Left-Handed Twisted Waveguide
- “60”
- Length | 60 mm
- “P”
- Flange type | Rectangular Flat
- “M”
- Flange type | Rectangular Grooved
- “A/C”
- Material | Aluminium, Cu
- “45”
- Twisting angle | 45° (90° as default)
The live-page example and its “840DR / WRD840” legend do not describe one consistent model. The PDF uses a different example with a 100 mm length; see the source-document comparison below. Verify the complete code for your quotation.
Applications listed by Dolph Microwave
Where polarization alignment matters.
Radar
Align polarization between waveguide-connected radar components.
Satellite
Match antenna and feed-system polarization orientation.
Telecom
Adapt the orientation of waveguide-fed communication hardware.
R&D
Arrange controlled polarization configurations in microwave laboratories.
Aerospace
Match polarization orientation in applicable waveguide assemblies.
Source documentation & verification
Keep model data traceable.
The product overview, the live model table and the linked manufacturer PDF contain different figures and coding conventions. Their separate original details are retained below rather than combined into an unsupported single specification.
Original overview-only specifications and claims
Introductory text: 18 to 110 GHz across seven frequency bands; WR10 through WR430; polarization rotation without changing the waveguide’s overall routing direction.
- Wide Frequency Range: 18 to 110 GHz; seven frequency bands.
- Customizable Twist Angles: 45° and 90° options and customer-specified angles.
- Superior Electrical Performance: gold-plated brass; VSWR as low as 1.02:1 and insertion loss as low as 0.2 dB. These claims are not substantiated by a corresponding entry in the 20-row live model table; do not apply them to a selected DH model without confirmation.
- Versatile Configuration Options: right-hand and left-hand twist configurations for 45° versions.
- High-Quality Materials: Oxygen Free Hard Copper or Copper Alloy.
- Precision Engineering: precision machining is described in the original overview; no machining tolerance is supplied.
- Protective Finish: corrosion protection plus black/grey top coat.
Original Product Specifications summary: Frequency Range — 18 to 110 GHz; Waveguide Sizes — WR-430 to WR-10; VSWR — As low as 1.02:1; Insertion Loss — As low as 0.2 dB; Twist Range — 0°-90°, with standard twists of 30°, 45°, 60°, 90°; Material — Oxygen Free Hard Copper, Copper Alloy; Flange Types — UG and CPR, with other options available; Finish — Corrosion-resistant with black/grey top coat.
Interpretation: The live model rows instead start at 1.72 GHz and end at 112 GHz, list 1.1:1 or 1.15:1 for VSWR, and list 0.15–0.30 dB for IL; they specify Al/Cu and Chromate/Painted. These are separate source statements, not interchangeable performance guarantees.
Manufacturer PDF: all 20 DP-series specification rows (separate document revision)
This is the table in the manufacturer’s linked Waveguide Twist PDF. Its “DP-” model prefix, IEC designations, flange labels and certain numeric entries differ from the live “DH-” table above. It is reproduced for traceability, not combined with the DH ordering data.
| Model No* | Freq range (GHz) | VSWR (Max) | Minimum length (mm) | WG type IEC | WG type EIA | Flange | Material |
|---|---|---|---|---|---|---|---|
| DP-22WTA… | 1.72-2.61 | 1.10 | 800 | R22 | WR430 | FDP/FDM | Al/Cu |
| DP-26WTA… | 2.17-3.30 | 1.10 | 400 | R26 | WR340 | FDP/FDM | Al/Cu |
| DP-32WTA… | 2.60-3.95 | 1.10 | 300 | R32 | WR284 | FDP/FDM | Al/Cu |
| DP-40WTA… | 3.22-4.90 | 1.10 | 250 | R40 | WR229 | FDP/FDM | Al/Cu |
| DP-48WTA… | 3.94-5.99 | 1.10 | 200 | R48 | WR187 | FDP/FDM | Al/Cu |
| DP-58WTA… | 4.64-7.05 | 1.10 | 170 | R58 | WR159 | FDP/FDM | Al/Cu |
| DP-70WTA… | 5.38-8.17 | 1.10 | 150 | R70 | WR137 | FDP/FDM | Al/Cu |
| DP-84WTA… | 6.57-9.99 | 1.10 | 120 | R84 | WR112 | FBP/FBM/FBE | Al/Cu |
| DP-100WTA… | 8.20-12.40 | 1.10 | 60 | R100 | WR90 | FBP/FBM/FBE | Al/Cu |
| DP-120WTA… | 9.84-15.0 | 1.10 | 60 | R120 | WR75 | FBP/FBM/FBE | Al/Cu |
| DP-140WTA… | 11.9-18.0 | 1.10 | 50 | R140 | WR62 | FBP/FBM/FBE | Al/Cu |
| DP-180WTA… | 14.5-22.0 | 1.10 | 50 | R180 | WR51 | FBP/FBM/FBE | Al/Cu |
| DP-220WTA… | 17.6-26.7 | 1.10 | 50 | R220 | WR42 | FBP/FBM/FBE | Al/Cu |
| DP-260WTA… | 21.7-33.0 | 1.15 | 50 | R260 | WR34 | FBP/FBM/FBE | Al/Cu |
| DP-320WTA… | 26.3-40.0 | 1.15 | 50 | R320 | WR28 | FBP/FBM/FBE | Al/Cu |
| DP-400WTA… | 32.9-60.1 | 1.15 | 50 | R400 | WR22 | FUGP | Cu |
| DP-500WTA… | 39.2-59.6 | 1.15 | 50 | R500 | WR19 | FUGP | Cu |
| DP-620WTA… | 49.8-75.8 | 1.15 | 50 | R620 | WR15 | FUGP | Cu |
| DP-740WTA… | 60.5-91.9 | 1.15 | 50 | R740 | WR12 | FUGP | Cu |
| DP-900WTA… | 73.8-112 | 1.15 | 50 | R900 | WR10 | FUGP | Cu |
* Indicates model number. See ordering information for complete part number. The PDF’s illustration shows three product views plus a twist profile identified as “Flange 1,” “Flange 2,” and “L.” The schematic above retains these drawing labels.
Manufacturer PDF: illustrated part-number example and original ordering notes
Illustrated PDF example: DH-100WTA100PMA45. The illustrated callouts identify: Dolph Microwave / Product Type: WG Twist; WG Type: R100; Twist WG Length: L=100mm; Flange 1 Type: M=FBP100; Flange 2 Type: M=FBM100; Material: A=Aluminum C=Copper; Twisting Angle: 45° (90° as default). The figure uses an example length of 100 mm, unlike the live-page 60 mm example.
- Flange type: Multiple types available – see Dolph Microwave Flanges page.
- Finish: Corrosion protection plus black/grey top coat.
- Twist angle other than 90° available on request.
- Twist direction option of Dolph Microwave unless otherwise specified.
The manufacturer’s published PDF and the current web page also differ for WR90 (8.20–12.40 GHz versus 8.2–12.5 GHz) and WR22 (32.9–60.1 GHz versus 32.9–50.1 GHz); the PDF lists Cu and FUGP for WR22–WR10 while the current web table lists Al/Cu and combined FUGP/UG codes. The live DH-48WTA… grooved flange appears as “PDR348”; verify this designation rather than silently correcting it.
Technical sources: Dolph Microwave product page and its manufacturer Waveguide Twist PDF. Values are transcribed from those sources, not independently tested or certified on this page.
