Patent ID: 7924117
Filing Date: 2011-04-12
Classification: H04B

Abstract:
1. A high-frequency component comprising a laminate of substrates having electrode patterns and a multi-band high-frequency circuit for performing wireless communications among different communication systems having high-frequency bands and low-frequency bands, the multi-band high-frequency circuit comprising a high-frequency switch circuit comprising switching elements for switching the connection of at least one multi-band antenna to transmitting circuits and receiving circuits, a first diplexer circuit disposed between said high-frequency switch circuit and said transmitting circuits for branching a high-frequency signal into frequency bands of said communication systems, a second diplexer circuit disposed between said high-frequency switch circuit and said receiving circuits for branching a high-frequency signal into frequency bands of said communication systems, filter circuits disposed between said second diplexer circuit and said receiving circuits, respectively, and balanced-to-unbalanced converters disposed between said filter circuits and said receiving circuits, respectively, said first and second diplexers, filter circuits and balanced-to-unbalanced converters having inductance elements and capacitance elements, at least part of said inductance elements and capacitance elements being constituted by said electrode patterns, the electrode patterns of said first diplexer and the electrode patterns of said second diplexer not overlapping in a direction perpendicular to the laminate of substrates.