IMPEDANCE CONVERSION RATIO SETTING METHOD, IMPEDANCE CONVERSION CIRCUIT, AND COMMUNICATION TERMINAL APPARATUS

摘要

Coil openings of a primary side coil element of a first transformer, a secondary side coil element of the first transformer, a primary side coil element of a second transformer, and a secondary side coil element of the second transformer overlap with one another when viewed from above in a lamination direction. The primary side coil element of the first transformer and the primary side coil element of the second transformer are connected in parallel, and the secondary side coil element of the first transformer and the secondary side coil element of the second transformer are connected in parallel. An impedance conversion ratio is defined in accordance with a lamination order of the primary side coil element and the secondary side coil element of the first transformer with respect to a lamination order of the primary side coil element and the secondary side coil element of the second transformer within a multilayer body.

主权项

1. An impedance conversion ratio setting method for an impedance conversion circuit that includes, in a multilayer body where a plurality of base material layers are laminated, a first transformer including a primary side coil element and a secondary side coil element being coupled to each other through an electromagnetic field and a second transformer including a primary side coil element and a secondary side coil element being coupled to each other through an electromagnetic field, the method comprising:
making coil openings of the primary side coil element of the first transformer, the secondary side coil element of the first transformer, the primary side coil element of the second transformer, and the secondary side coil element of the second transformer overlap with one another when viewed from above in a lamination direction; making the primary side coil element of the first transformer and the primary side coil element of the second transformer be connected in parallel, and making the secondary side coil element of the first transformer and the secondary side coil element of the second transformer be connected in parallel; and defining an impedance conversion ratio realized by the first transformer and the second transformer in accordance with a lamination order of the primary side coil element of the first transformer and the secondary side coil element of the first transformer as well as a lamination order of the primary side coil element of the second transformer and the secondary side coil element of the second transformer within the multilayer body.