Patent ID: 7161227

Claim:
A semiconductor structure comprising: a monocrystalline compound semiconductor material; a source component overlying the monocrystalline compound semiconductor material, the source component being operable to generate electromagnetic energy; first interconnect coupled between the antenna and the source component, the first interconnect being operable to guide a first portion of the electromagnetic energy from the source component to an antenna that transmits the first portion of the electromagnetic energy; a receiver component overlying the monocrystalline compound semiconductor material; and a second interconnect coupled between the antenna and the receiver component, wherein the first interconnect is further coupled between the source component and the receiver component and operable to guide a second portion of the electromagnetic energy from the source component to the receiver component, the second portion being operable as a reference signal, and wherein the receiver component is operable to generate a detection signal in response to a reflection of the first portion of the electromagnetic energy received at the antenna from an object that is external to the semiconductor structure, the first portion of electromagnetic energy being coupled to the receive component by the second interconnect.