Patent ID: 7202419
Filing Date: 2007-04-10
Classification: B32B,H05K,Y10T

Abstract:
1. A multi-layered integrated RF/IF circuit board including a high radio frequency (RF) portion and a lower intermediate frequency (IF) portion, the board comprising: a center non-conductive layer; a first inner conductive layer on a first surface of the center non-conductive layer, and a second inner conductive layer on a second surface of the center non-conductive layer opposite to the first surface of the center non-conductive layer; a first core on the first inner conductive layer, and a second core on the second inner conductive layer; a first outer conductive layer on the first core, and a second outer conductive layer on the second core; a first outer non-conductive layer on the first outer conductive layer and a second outer non-conductive layer on the second outer conductive layer, the first outer non-conductive layer being of a same material as the first inner non-conductive layer; and a first outer-most conductive layer on the first outer non-conductive layer and a second outer-most conductive layer on the second outer non-conductive layer, wherein the first outer conductive layer underneath the lower intermediate frequency (IF) portion of the board is etched away such that the first outer non-conductive layer and the first core touch one another and form a single dielectric layer underneath the lower intermediate frequency (IF) portion of the board.