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เราจะทำแบบวิศวกรผู้ยิ่งใหญ่
27. July 2026
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Helical_Bandpass_Filter_Designer.php 7114 Bytes 14-12-2014 21:19:16
Helical Bandpass Filter Designer
Suiteable for the VHF range ( 1 ... 1000 MHz )
✈ Hints
More information can be found in the ARRL handbook, chapter 12, "Helical Resonators".
A second source to be mentioned is the "Handbook of Filter Synthesis" by Anatol I. Zverev, ISBN: 9780471749424
Instead of the tuning slug, a trimmer capacitor mayst be used. This has the advantage, that the helix is mechanically stabilised.
A second source to be mentioned is the "Handbook of Filter Synthesis" by Anatol I. Zverev, ISBN: 9780471749424
Instead of the tuning slug, a trimmer capacitor mayst be used. This has the advantage, that the helix is mechanically stabilised.
✈ Share your thoughts
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t1 = 7319 d
t2 = 250 ms |
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