Method of making a high frequency device package
View Patent ↗A fabrication method for a low-cost high-frequency electronic device package having waveguide structures formed from the high frequency device to the package lead transition. The package lead transition is optimized to take advantage of waveguide interconnect structure.
1. A process for creating a high frequency package, comprising:
forming a conductive leadframe having one or more leads, said leadframe having top and bottom surfaces, said bottom surface forming one or more printed circuit board attachment areas,
said top surface forming a wirebond and one or more conductive electrical component attachment areas;
forming an insulating material around said conductive leadframe;
attaching at least one electrical component to the one or more conductive electrical component attachment areas; and
forming a waveguide between the at least electrical component and at least one of the leads of the leadframe.
2. The process of claim 1 , wherein the insulating material is not formed on the one or more printed circuit board attachment areas, the wirebond and the one or more conductive electrical component attachment areas.
3. The process of claim 1 further comprising forming a non-conductive electrical component attachment area in the leadframe and attaching at least one electrical component to the non-conductive electrical component attachment area.
4. The process of claim 1 , wherein said waveguide further comprises a micro-coaxial interconnect formed by: attaching a wirebond between the at least one electrical component and leadframe lead, coating said wirebond with an insulating layer and coating wirebond/insulator composite with an electrically conductive shield layer.
5. The process of claim 1 further comprising forming a ground via to attach the electrically conductive shield layer to a grounded element within the package.
6. The process of claim 1 further comprising forming a ground via to attach the electrically conductive shield layer to a grounded element on the at least one electrical component.
7. The process of claim 1 further comprising adding of extra dielectric in the lead-to-wirebond region.