Millimeterwave lenses can convert a spherical wave into a plane wave, which realizes precise directivity. KEYCOM has a line of millimeterwave lenses for microwave, millimeterwave, and sub-millimeterwave applications. A reflection prevention film developed by KEYCOM resolved an increase in insertion loss caused by wave reflections at the lens surface, and resonance phenomena caused by multiple reflections. Application examples of millimeterwave lenses
| 1.Application to lens antennas | 2. Application to electromagnetic wave sensors | 3. Application to cassegrain antennas |
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| The lens antenna is a type of an open surface antenna. Not like other open surface antenna, a lens antenna does not block a wave path, and can receive a cross-polarized wave. This application also improves directivity. |
Millimeterwave lenses improve performance of a sensor by placing the sensor at a focal point of the lens. This application is also effective when heat insulation is required. |
This application improves the performance of a cassegrain antenna by reducing the size of the secondary reflection mirror when a millimeterwave lens is used at the primary radiator of the antenna. |
Model No.
Millimeterwave lenses
| ML | F | ARL | |||
| Lens effective diameter mm 030,050,100,200,300 |
Focal length mm 030,050,100,200,300 |
Frequency GHz | |||
| Enter when a reflection prevention film (both phases) is used. | |||||
#Common antenna patters
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Lens holding parts
| MLA | B | OP |
| A part size mm | B part size mm | Comments (Diagram number, etc.) |
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#Graphs
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Radiators
1 Connecting to metal waveguide tubes| RMD | F | ||||
| Interchangeable lens effective diameter mm | Focal length of interchangeable lenses mm | EIA Standards for metal waveguide tubes | Flange type |
| EIA Standards for metal waveguide tubes | Flange type | Frequency | |||||
| WR- | 28 | UG- | 380 | /U | 26.5 | ~ | 40.0 |
| 22 | 383 | 33.0 | 50.0 | ||||
| 19 | 383 | /U-M | 40.0 | 60.0 | |||
| 15 | 385 | /U | 50.0 | 75.0 | |||
| 12 | 387 | 60.0 | 90.0 | ||||
| 10 | 387/U-M | 75.0 | 110.0 | ||||
| 8 | 90.0 | 140.0 | |||||
| 7 | 110.0 | 170.0 | |||||
| 5 | 140.0 | 220.0 | |||||
| 4 | 170.0 | 260.0 | |||||
| 3 | 220.0 | 325.0 | |||||
2 See a separate document for connections to a dielectric material waveguide.
