Feed interfaces and materials
Model selection
Some abbreviated model names repeat with different bands. Keep the full frequency requirement with the part number.
Material and power
The family lists aluminum/copper; all eight model rows specify Al. No numeric high-power rating is given; include CW and peak requirements.
Polarization and ports
Isolation and cross-polarization are separate ratings. Confirm the common-port drawing and any accompanying polarizer for the required feed-system polarization.
Specifications and configuration details
OMT electrical model data
| Model | Freq Range (Ghz) | VSWR | IL (dB) | Cross Pol.(dB) |
|---|---|---|---|---|
| DH-OMT-X-RT… | 9.3-9.8 | 1.15 | 0.2 | 35 |
| DH-OMT-C-RT… | 5.8-7.2 | 1.2 | 0.1 | 35 |
| DH-OMT-C-RT… | 3.4-6.725 | 1.2 | 0.1 | 35 |
| DH-OMT-Ku-RT… | 10.7-14.5 | 1.25 | 0.1 | 30 |
| DH-OMT-Ku-RT… | 10.7-14.8 | 1.25 | 0.1 | 30 |
| DH-OMT-DBS-RT… | 15.0-22.0 | 1.4 | 0.5 | 35 |
| DH-OMT-DBS-RT… | 17.7-19.7 | 1.25 | 0.15 | 35 |
| DH-OMT-Ka-RT… | 17.7-31.0 | 1.25 | 0.15 | 35 |
Isolation and waveguide interfaces
| Isolation (dB) | Waveguide Type | Com.Port | Material |
|---|---|---|---|
| 35 | WR90 | TBD | Al |
| 35 | WR137 | TBD | Al |
| 35 | WR137/WR229 | TBD | Al |
| 35 | WR75 | TBD | Al |
| 35 | WR75 | TBD | Al |
| 45 | WR51 | TBD | Al |
| 40 | WR42 | TBD | Al |
| 35 | WR42/WR28 | TBD | Al |
The eight rows follow the source order. All common-port entries remain TBD.
Ordering information: DH – OMT – Ext.Ku – RT – X – 02
| Code | Published meaning |
|---|---|
| DH | Dolph Microwave |
| OMT | Orthogonal Mode Transducer |
| Ext. Ku | Extend Ku-band |
| RT | Transceiver |
| X | Cross Pol. |
| 2 | Second Generation |
Product-family reference from the original page
The entries below are retained as published. Where they differ from the model-specific catalogue, confirm the selected configuration using the notes above.
| Specification | Details |
|---|---|
| Frequency Bands | C, X, Ku, Ka |
| Polarization | Linear/Circular, Dual, Coaxial |
| VSWR | 1.2:1 |
| Material | Aluminum (Al), Copper (Cu) |
| Isolation | High |
| Power Handling | High |
| Customization | Available for standard and special needs |
Drawings and original documents
OMT (Orthogonal Mode Transducer)
Download PDFView original pages (1)
FLANGE TYPE DESIGNATIONS INFORMATION
Download PDFOriginal flange designations and dimensional reference. Match the exact interface shown on your assembly drawing.
Related products
Check the common-port drawing against the Microwave Feedhorn. For circular polarization, review the Waveguide Phase Shifter & Septum Circular Polarizer as part of the complete feed.
Include these details in your inquiry
- Operating frequency bands
- Polarization arrangement and signal paths
- Isolation, cross-polarization and insertion-loss requirements
- Common-port and branch-port drawings
- CW/peak power and environment
- Material, quantity and required documents
