摘要 |
A pair of balanced terminals is connected to a pair of interdigital-coupled quarter-wave resonators in an electronic device. This electronic device has a first resonance mode that resonates at a first resonance frequency f<SUB>1 </SUB>higher than a resonance frequency f<SUB>0 </SUB>in each of the pair of quarter-wave resonators when establishing no interdigital-coupling, and a second resonance mode that resonates at a second resonance frequency f<SUB>2 </SUB>lower than the resonance frequency f<SUB>0</SUB>. The second resonance frequency f<SUB>2 </SUB>of a low frequency is set as an operating frequency. This provides an electronic device and a filter that facilitate miniaturization and enable a balanced signal to be transmitted with superior balance characteristics.
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