FILTER, ANTENNA SHARING UNIT AND COMMUNICATION MACHINE EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide a filter where the occurrence of unnecessary electrostatic capacity between resonance circuits is suppressed and to provide an antenna sharing unit and communication machine equipment. SOLUTION: A trap capacitor C1 and a frequency adjusting capacitor C3 are formed on one capacitor substrate 24. A trap capacitor C2 and a frequency adjusting capacitor C4 are formed in one different capacitor substrate 25. Namely, the trap capacitors C1 and C2 and the frequency adjusting capacitors C3 and C4 are constituted in the capacitor substrates 24 and 25 which are independent for respective resonance circuits by a band-pass blocking filter 21.