Patent ID: 7893794

Claim:
A surface acoustic wave (SAW) duplexer comprising: a transmitting SAW filter having an output portion; a receiving SAW filter having an input portion; a single piezoelectric substrate on which the transmitting and receiving SAW filters are formed; a package base board on which the single piezoelectric substrate is mounted, an input terminal which is positioned on the package base board and outside the single piezoelectric substrate; and an output terminal which is positioned on the package base board and outside the single piezoelectric substrate, wherein the input terminal of the package base board is electrically connected to the input portion of the receiving SAW filter and the output terminal of the package base board is electrically connected to the output portion of the transmitting SAW filter, wherein a distance between the input terminal and the output terminal of the package base board is greater than a distance between the output portion of the transmitting SAW filter and the input portion of the receiving SAW filter, wherein the output terminal of the package base board is positioned closer to the output portion of the transmitting SAW filter than the input portion of the receiving SAW filter, wherein the input terminal of the package base board is positioned closer to the input portion of the receiving SAW filter than the output portion of the transmitting SAW filter, and wherein the package base board is rectangular, and the input and output terminals are diagonally positioned on the package base board.