Microwave Wire Grid Polarizers
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Download Microwave Wire Grid Polarizers Datasheet (PDF, 484 KB) |
For microwave range we produce wire grid polarizers intended to polarize radiation from 600 µm to centimeter wavelengths. They are made of 20 μm thick parallel tungsten wires mounted in a holder with no substrate.
Applications:
• Spectroscopy;
• Polarimetry;
• Astronomy;
• Antenna engineering.
Features:
• Can withstand high energies of incident radiation;
• Due to no substrate provide high transmissivity of desired polarization;
• Provide high degree of polarization;
• Made of tungsten wires;
• Mounted in holders (protective rings marked with wire direction).
The advantages of wire grid polarizers over polypropylene grid polarizers:
• Better transmission of desired polarization due to no substrate;
• Can withstand high-intensity radiation.
Specification:
| Wavelength range, μm | ≥ 600 |
| Holder diameter, mm | ≤ 152 |
| Working aperture, mm | ≤ 136 |
| Transmission of desired polarization K1, % | > 95 |
| Transmission of non-desired polarization K2, % | < 0,1 |
| Extinction coefficient Е=10*Log(K1/K2), dB | > 30 |
Fig. 1. Extinction coefficient, dB
Fig. 2. Transmission of non-desired polarization, %
As standart, polarizers are supplied in a round (2 - 6 inch diameter) holder. Working aperture is 36 mm for 2-inch and 136 mm for 6-inch polarizer. On customer's request polarizers can be equipped with a rotator.
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