COMPOSITE HIGH-FREQUENCY PART AND INFORMATION TERMINAL APPARATUS USING THE SAME

摘要

A composite high-frequency part capable of reducing the number of switching parts, being used in an information terminal apparatus, reducing the size and power consumption, and simplifying the circuit. The composite high-frequency part (10) used for transmission/reception of a first signal and a second signal of different frequency bands comprises a reception block (20) having an antenna (12), a first reception port Rx1 for receiving the first signal, a second reception port Rx2 for receiving the second signal, and a diplexer (22) connected to the reception ports and distributing the first signal and the second signal, a transmission block (30) having a first transmission port Tx1 for transmitting the first signal, a second transmission port Tx2 for transmitting the second signal, and a diplexer (32) connected to the transmission ports and coupling the first signal to the second signal, and a switch (16) capable of selectively connecting the diplexer of the transmission block (30) or the reception block (20) to the antenna (12).