FREQUENCY ADJUSTMENT METHOD FOR LAMINATION FILTER

摘要

PROBLEM TO BE SOLVED: To easily adjust the frequency of a lamination filter by providing a frequency adjustment electrode connecting to a shield electrode to a side face of a laminator opposed to an open end of a strip line electrode and trimming the frequency adjustment electrode. SOLUTION: Since an open end 3b of a strip line electrode 3 is formed closer to a frequency adjustment electrode 8 than other internal electrodes 5a, 5b trimming the frequency adjustment electrode 8 causes almost no effect onto the internal electrodes 5a, 5b and only the frequency of the strip line electrode 3 is positively adjusted. Each strip line electrode 3 is frequency-adjusted by trimming the frequency adjustment electrode 8 corresponding to each strip line electrode 3. Thus, the coupling between the frequency adjustment electrode 8 and the strip line electrode 3 is increased and the frequency adjustment width in the case of trimming the frequency adjustment electrode 8 to adjust the frequency.