US 11,758,647 B2
Inhomogeneous dielectric medium high-speed stripline trace system
Arun Reddy Chada, Round Rock, TX (US); and Bhyrav Mutnury, Round Rock, TX (US)
Assigned to Dell Products L.P., Round Rock, TX (US)
Filed by Dell Products L.P., Round Rock, TX (US)
Filed on Jan. 26, 2021, as Appl. No. 17/158,769.
Prior Publication US 2022/0240374 A1, Jul. 28, 2022
Int. Cl. H05K 1/02 (2006.01); H05K 1/03 (2006.01); H01P 3/08 (2006.01)
CPC H05K 1/0245 (2013.01) [H01P 3/085 (2013.01); H05K 1/0353 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An inhomogeneous dielectric medium high-speed signal trace system, comprising:
a first ground layer;
a second ground layer;
a first dielectric layer having a first dielectric constant, wherein the first dielectric layer is located adjacent the first ground layer and includes a first thickness and;
a second dielectric layer having a second dielectric constant that is different than the first dielectric constant, wherein the second dielectric layer is located between the first dielectric layer and the second ground layer and includes a second thickness that is greater than or equal to the first thickness;
a second differential trace pair that is located between the first dielectric layer and the second dielectric layer; and
a first differential trace pair that is located between the first dielectric layer and the second dielectric layer and adjacent the second differential trace pair, wherein the first differential trace pair is configured to transmit signals and, in response, produce a magnetic field, and wherein the first differential trace pair includes a trace spacing that is less than or equal to the first thickness and that prevents a magnetic field strength of the magnetic field from exceeding a magnetic field strength threshold at the second differential trace pair.