Patent ID: 8022784
Filing Date: 2011-09-20
Classification: H01P

Abstract:
1. A wireless communication module, comprising: a multi-layer low temperature co-fired ceramic (LTCC) substrate; a plurality of monolithic millimeter-wave integrated circuits (MMICs) attached to the top surface of the multi-layer substrate for signal processing; a planar transmission line formed on the top surface of the multi-layer substrate for communications between the MMICs; a metal base which is attached to the bottom surface of the multi-layer substrate, and has an opening to which an antenna is attached; a plurality of vias, for connecting the metal base and the planar transmission line, within the multi-layer substrate to establish a uniform potential on a ground plane of the multi-layer substrate; an embedded waveguide formed over the opening and surrounded with the vias within the multi-layer substrate; and a planar transmission line-to-waveguide transition apparatus for the transition of waves between the planar transmission line and the embedded waveguide, wherein the planar transmission line-to-waveguide transition apparatus includes a bent stub that is built in the embedded waveguide, the bent stub including first and second vias spaced from each other and a transition line installed on the embedded waveguide to connect the first and second vias, and wherein the first and second vias are located in an identical layer.