Patent ID: 7167688
Filing Date: 2007-01-23
Classification: H04B

Abstract:
1. An RF transceiver module for wireless communication devices comprising: a multi-layered substrate; an RF transceiver IC mounted on the multi-layered substrate for receiving and transmitting voice or data signals; at least one band selection filter mounted on the multi-layered substrate for filtering received RF signals; an antenna switch integrated in the multi-layered substrate which is capable of being switched to transmit RF signals to the external antenna or to receive RF signals from an external antenna to the RF transceiver IC through the band selection filter; a plurality of passive devices embedded in the multi-layered substrate; wiring embedded in the multi-layered substrate for electrically connecting the passive devices, the RF transceiver, and the band selection filter, a shielding via fence formed under the band selection filter for isolating high power RF signals produced by a power amplifier from the RF transceiver IC; a shielding ground plane formed one or two substrate layers beneath the transceiver IC for providing isolation between the embedded passive devices and the RF transceiver IC; and a plurality of input, output, and grounding pads formed on the bottom of multi-layered substrate.