Patent ID: 7680509

Claim:
A transmission/reception integrated radio-frequency apparatus comprising: a frame-like external shield plate surrounding a periphery of a board; an input/output terminal provided on one side of the frame-like shield plate; an internal shield plate for dividing the board surrounded by the external shield plate into, a first region including an area of the input/output terminal and a second region adjacent to the input/output terminal; a reception system block, formed on the first region of the board, for receiving a first radio-frequency signal supplied to the input/output terminal, converting the first radio-frequency signal to an intermediate-frequency signal, and outputting the intermediate-frequency signal; a transmission system block, formed on the second region of the board, for processing a second radio-frequency signal for transmission, and outputting the processed second radio-frequency signal to the input/output terminal; and an output terminal for deriving the output signal from the reception system block and an input terminal for supplying the second radio-frequency signal to the transmission system block, the output terminal and the input terminal being provided on a side of the external shield plate which is adjacent to said side provided with the input/output terminal and is opposed to the transmission system block.