Patent ID: 6232849
Filing Date: 2001-05-15
Classification: H01P,H05K

Abstract:
A transition for minimizing the leakage of electromagnetic energy from a signal passing between microstrip circuits, comprising:a circuit board including a circuit board ground plane;a first microstrip circuit located on one side of said circuit board for carrying said signal, said first microstrip circuit comprising a first microstrip conductor separated from a first ground plane by a first insulating layer;a second microstrip circuit located on a side of the circuit board opposite to said one side for receiving said signal, said second microstrip circuit comprising a second microstrip conductor separated from a second ground plane by a second insulating layer;signal conducting means passing through said circuit board and connected to first and second microstrip circuit conductors of the first and second microstrip circuits, respectively; anda plurality of plated holes disposed in said circuit board and surrounding said signal conducting means, said plurality of plated holes being coupled to said first, second, and circuit-board ground plane to minimize leakage of electromagnetic energy from said signal conducting means to said board as said signal passes through said board between the first and second microstrip circuits.