Waveguide Bulkhead Feedthrus
Waveguide bulkhead feedthroughs are specialized components designed to facilitate the transmission of electromagnetic waves through barriers, such as walls or enclosures, in microwave systems. These devices ensure minimal signal loss and leakage while maintaining the integrity of the waveguide path. They are crucial for applications requiring isolated environments or separated compartments, such as in radar systems, satellite communications, and scientific research equipment, providing a secure and efficient means of signal passage.
Double-Ridged Waveguide Bulkhead Feedthroughs
Dolph Microwave waveguide bulkhead feedthroughs route a double-ridged waveguide connection through an equipment wall, mounting panel, or enclosure partition.
The product family includes separate models covering frequency ranges from 0.84 to 40.0 GHz. Available waveguide sizes extend from WRD840 to WRD180, with aluminum or copper construction and model-specific cover and grooved flange designations.
Model selection should be based on the complete operating frequency range, adjoining waveguide size, mating flange configuration, material, and available installation dimensions.
Coverage across separate models
Double-ridged waveguide sizes
Listed model-dependent VSWR
Published material options
Waveguide Bulkhead Feedthrough Specifications
Use the frequency range, WRD size, flange designations, and dimensions together when comparing catalog models.
| Model Family | Frequency Range (GHz) |
Waveguide Size | VSWR | Cover Flange | Grooved Flange | A (mm) |
B (mm) |
C (mm) |
D (mm) |
Material |
|---|---|---|---|---|---|---|---|---|---|---|
| DH-840DRBFU… | 0.84-2.0 | WRD840 | 1.15:1 | FPWRD840U24 | FMWRD840U24 | 250 | 120 | 255 | 268 | Al/Cu |
| DH-150DRBFU… | 1.5-3.6 | WRD150 | 1.15:1 | FPWRD150D24 | FMWRD150D24 | 250 | 120 | 255 | 268 | Al/Cu |
| DH-200DRBFU… | 2.0-4.8 | WRD200 | 1.15:1 | FPWRD200D24 | FMWRD200D24 | 250 | 120 | 120 | 133 | Al/Cu |
| DH-250DRBFU… | 2.6-7.8 | WRD250 | 1.15:1 | FPWRD250D30 | FMWRD250D30 | 250 | 120 | 133.35 | 152.4 | Al/Cu |
| DH-350DRBFU… | 3.5-8.2 | WRD350 | 1.15:1 | FPWRD350D24 | FMWRD350D24 | 250 | 120 | 100 | 113 | Al/Cu |
| DH-475DRBFU… | 4.75-11.0 | WRD475 | 1.15:1 | FPWRD475D24 | FMWRD475D24 | 108 | 41.4 | 82.6 | 101.6 | Al/Cu |
| DH-500DRBFU… | 5.0-18.0 | WRD500 | 1.15:1 | FPWRD500D36 | FMWRD500D36 | 95.3 | 35.1 | 73.2 | 88.9 | Al/Cu |
| DH-580DRBFU… | 5.8-16.0 | WRD580 | 1.15:1 | FPWRD580D28 | FMWRD580D28 | 95.3 | 35.1 | 73.2 | 88.9 | Al/Cu |
| DH-650DRBFU… | 6.5-18.0 | WRD650 | 1.15:1 | FPWRD650D28 | FMWRD650D28 | 95.3 | 35.1 | 73.2 | 88.9 | Al/Cu |
| DH-700DRBFU… | 7.0-18.5 | WRD700 | 1.15:1 | FPWRD700D26 | FMWRD700D26 | 95.3 | 35.1 | 73.2 | 88.9 | Al/Cu |
| DH-750DRBFU… | 7.5-18.0 | WRD750 | 1.15:1 | FPWRD750D24 | FMWRD750D24 | 95.3 | 35.1 | 73.2 | 88.9 | Al/Cu |
| DH-110DRBFU… | 11.0-26.5 | WRD110 | 1.2:1 | FPWRD110C24 | FMWRD110C24 | 76.2 | 25.4 | 63.5 | 76.2 | Al/Cu |
| DH-180DRBFU… | 18.0-40.0 | WRD180 | 1.2:1 | FPWRD180C24 | FMWRD180C24 | 76.2 | 25.4 | 63.5 | 76.2 | Al/Cu |
How to Select a Waveguide Bulkhead Feedthrough
Match the Complete Frequency Range
Select a model whose listed frequency range covers the complete operating band. Do not select a model only according to the nominal or center frequency.
Confirm the Waveguide Size
The feedthrough WRD size should match the adjoining double-ridged waveguide components. Overlapping frequency ranges do not make different waveguide sizes mechanically interchangeable.
Verify Both Flange Interfaces
Check the listed cover and grooved flange designations against the mating interfaces on both sides of the equipment wall or mounting panel.
Check the Installation Dimensions
Compare dimensions A, B, C, and D with the enclosure space, panel layout, adjacent waveguide routing, and mating flange position.
Materials, Flanges and Surface Finish
Aluminum and Copper
The product table lists aluminum and copper options for each available model family. Include the required material in the RFQ.
Cover and Grooved Flanges
Each model has published cover and grooved flange designations. Select the combination that matches the adjoining double-ridged waveguide assembly.
Standard Body Treatment
Published product information states that standard models receive a Surtec/corrosion-protection treatment and flat-black paint.
Flange and Finish Options
Flange surfaces are stated as unplated, polished, and Surtec-treated. Other finishes and paint colors are available upon request.
Waveguide Bulkhead Feedthru Part Number Guide
- 840DR — WRD840 waveguide size
- BFU — Bulkhead Feedthrus product type
- P — Rectangular flat flange
- M — Rectangular grooved flange
- A/C — Aluminum or copper material designation
Provide the required frequency range, WRD waveguide size, flange arrangement, material, and installation dimensions when requesting the final orderable part number.
Waveguide Component Design and Manufacturing Scope
Dolph Microwave’s quality management system is certified to GB/T19001-2016/ISO 9001:2015.
The stated certification scope covers Waveguide Components Design, Manufacture and Sale.
Technical Downloads
Waveguide Bulkhead Feedthrus
Download the product-family document containing model frequency ranges, waveguide sizes, VSWR values, flange designations, dimensions, and material options.
Double-Ridged Flange Type Designations
Review the flange designations associated with the available double-ridged waveguide interfaces.
Frequently Asked Questions
What frequency range do these waveguide bulkhead feedthroughs cover?
The product family covers separate model ranges from 0.84 to 40.0 GHz. Each model has a defined frequency range and corresponding WRD waveguide size.
Which double-ridged waveguide sizes are available?
Available sizes include WRD840, WRD150, WRD200, WRD250, WRD350, WRD475, WRD500, WRD580, WRD650, WRD700, WRD750, WRD110, and WRD180.
What VSWR values are listed?
Models from WRD840 through WRD750 are listed with a VSWR of 1.15:1. The WRD110 and WRD180 models are listed with a VSWR of 1.2:1.
Are aluminum and copper versions available?
Yes. The published model table lists aluminum and copper material options for the available model families.
What flange types are available?
The listed models include cover and grooved flange designations. Match both interfaces to the adjoining waveguide components before ordering.
Can a different finish or paint color be requested?
Yes. Other finishes and paint colors are stated as available upon request.
Continue the Waveguide System Design
Waveguide Straights and TransitionsContinue or adapt the double-ridged waveguide run.
Waveguide to Coaxial AdaptersChange from a waveguide interface to a coaxial connection.
Waveguide Pressure WindowsReview a pressure-boundary component for the waveguide path.
Request a Waveguide Bulkhead Feedthrough Quote
Provide the main electrical and mechanical requirements so the applicable catalog model and configuration can be reviewed.
- Operating frequency range
- Required WRD waveguide size
- Flange configuration on each side
- Aluminum or copper material
- Available installation dimensions
- Required finish or paint color
- Prototype or production quantity
- Required delivery date
