| 摘要 |
PROBLEM TO BE SOLVED: To adjust the characteristic impedance of a laminated strip line filter. SOLUTION: A laminated strip line filter A is provided with a main body integrated by laminating dielectric substrates (t)-(z), internal ground electrodes 10 and 15, capacitor electrodes 11 and 14 and resonance electrodes 12 and 13 are respectively formed on the upper surfaces of the respective dielectric substrates (t)-(z), and a pair of external ground electrodes 11 and 12, a pair of input/output electrodes 21 and 22 and return electrodes 31 and 32 connected to these input/output electrodes are formed on the outer surfaces. Open stubs 20 and 21 formed so as to secure capacitance between the internal ground electrodes 10 and 15 electrically connect the resonance electrodes 12 and 13 and the input/output electrodes 21 and 22.
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