| 摘要 |
<p>PROBLEM TO BE SOLVED: To widen the band without making elements large-sized by forming a resonance circuit on a circuit board where the irreversible circuit element and other circuit elements are mounted and grounding the ground terminal of the irreversible element through the resonance circuit. SOLUTION: The irreversible circuit element 40 is used and has two input/ output terminals 5 and two ground terminals 3 from its flank to the bottom surface. On the circuit board 31 where the irreversible circuit element 40 is mounted, a pattern electrode 32 to which the input/output terminals 5 are connected and a pattern electrode 33 to which the ground terminals 3 are connected are formed. To the pattern electrode 33 to which the earth terminals 3, a strip line inductor 34 is connected. A stack chip inductor 36 is connected between the strip line inductor 34 and ground electrodes 35. Consequently, the irreversible circuit equivalent to an equivalent circuit can be obtained and the band of the irreversible circuit element can be widened.</p> |
