| 摘要 |
A filter includes a first resonance line and a second resonance line which extend from an input point where a high frequency signal is input, wherein an electrical propagation length L1 of the first resonance line is set at L1=[λ1/4]×n and an electrical propagation length L2 of the second resonance line is set at L2=[λ2/4]×n, wherein λ1 and λ2 are wavelengths of specified high frequency signals and n is positive odd number.
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