filter
时间：04-11
整理：3721RD
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what is the advantages of hairpin-line filter to the parallel-coupled or interdigital filters?
a gain of space
And you do not need ground vias, like you do with an interdigital. Ground vias are a real pain--not repeatable!
I think the interdigital filter is more suitable for high frequency and more area-saving.
Yibin.