Patent ID: 10382009

Abstract:
An RF front-end circuit (2) includes an antenna common terminal (20) connected to an antenna element (1), an SPDT switch circuit (21) having a common terminal (21c) and select terminals (21s1 and 21s2), and four filter elements (22A to 22D). The common terminal (21c) and the filter elements (22C and 22D) are connected to the antenna common terminal (20). The filter elements (22A and 22B) are connected to the select terminals (21s1 and 21s2), respectively. Pass bands of the filter elements (22A, 22C and 22D) do not overlap with one another, and pass bands of the filter elements (22B, 22C and 22D) do not overlap with one another. The pass bands of the filter elements (22A and 22B) partly overlap with each other.