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2.LNB
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Low Noise Box
In a system that requires to amplify in multi-stages very weak signals such as those of satellite broadcasting and satellite communication, if the entire noise is affected by the first-stage noise, and that portion requires very low noise design.
For this reason, a high Q is required and a resonator of TE mode is used. |
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■Shape
Those produced by MARUWA are in the frequency range of 4GHz to 20GHz, and there are two types, support attached type and resonator only.
The size differs depending on the frequency. Materials of various temperature characteristics are available. |
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3.Antenna block, board
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Plain antenna for car navigation (GPS antenna).
It is also called patch antenna. |
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■Shape
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Boards for GPS antennas for car navigation are available in 25mm square (M20, M21 material) and 20mm square (M38 material). Boards for GPS antennas for cell phone are available from 12 to 9mm square. Boards for capacitors for isolators are available in 50mm square with various types of material.
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