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公开(公告)号：US11758647B2
公开(公告)日：2023-09-12
申请号：US17158769
申请日：2021-01-26
申请人： Dell Products L.P.
发明人： Arun Reddy Chada , Bhyrav Mutnury
CPC分类号： H05K1/0245 , H01P3/085 , H05K1/0353
摘要： An inhomogeneous dielectric medium high-speed signal trace system includes a first and second ground layer. A first dielectric layer is located adjacent the first ground layer. A second dielectric layer has a different dielectric constant and a greater thickness than the first dielectric layer, and is located between the first dielectric layer and the second ground layer. A first differential trace pair is located between the first dielectric layer and the second dielectric layer, and includes a trace spacing that is less than or equal to a thickness of the first dielectric layer. The first different trace pair transmit signals and, in response, produces a magnetic field, and the trace spacing prevents a magnetic field strength of the magnetic field from exceeding a magnetic field strength threshold at a second differential trace pair that is located adjacent the first differential trace pair.
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公开(公告)号：US20220240373A1
公开(公告)日：2022-07-28
申请号：US17158618
申请日：2021-01-26
申请人： Dell Products L.P.
发明人： Arun Reddy Chada , Bhyrav Mutnury , Jiayi He
摘要： An inhomogeneous dielectric medium high-speed signal trace system includes first and second ground layers. A first dielectric layer has a first dielectric constant and is located adjacent the first ground layer, and a second dielectric layer has a second dielectric constant that is different than the first dielectric constant and is located between the first dielectric layer and the second ground layer. A first differential trace pair is located between the first and second dielectric layer. A plurality of first vias extend between the first ground layer and the second ground layer and are spaced part from each other and the first differential trace pair. A plurality of second vias extend between the first ground layer and the second ground layer, are spaced part from each other and the first differential trace pair, and are located opposite the first differential trace pair from the plurality of first vias.
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公开(公告)号：US20230389174A1
公开(公告)日：2023-11-30
申请号：US18448598
申请日：2023-08-11
申请人： Dell Products L.P.
发明人： Arun Reddy Chada , Bhyrav Mutnury
CPC分类号： H05K1/0245 , H05K1/0353 , H01P3/085
摘要： An inhomogeneous dielectric medium high-speed signal trace system includes a first and second ground layer. A first dielectric layer is located adjacent the first ground layer. A second dielectric layer has a different dielectric constant and a greater thickness than the first dielectric layer, and is located between the first dielectric layer and the second ground layer. A first differential trace pair is located between the first dielectric layer and the second dielectric layer, and includes a trace spacing that is less than or equal to a thickness of the first dielectric layer. The first different trace pair transmit signals and, in response, produces a magnetic field, and the trace spacing prevents a magnetic field strength of the magnetic field from exceeding a magnetic field strength threshold at a second differential trace pair that is located adjacent the first differential trace pair.
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公开(公告)号：US20220240374A1
公开(公告)日：2022-07-28
申请号：US17158769
申请日：2021-01-26
申请人： Dell Products L.P.
发明人： Arun Reddy Chada , Bhyrav Mutnury
摘要： An inhomogeneous dielectric medium high-speed signal trace system includes a first and second ground layer. A first dielectric layer is located adjacent the first ground layer. A second dielectric layer has a different dielectric constant and a greater thickness than the first dielectric layer, and is located between the first dielectric layer and the second ground layer. A first differential trace pair is located between the first dielectric layer and the second dielectric layer, and includes a trace spacing that is less than or equal to a thickness of the first dielectric layer. The first different trace pair transmit signals and, in response, produces a magnetic field, and the trace spacing prevents a magnetic field strength of the magnetic field from exceeding a magnetic field strength threshold at a second differential trace pair that is located adjacent the first differential trace pair.
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公开(公告)号：US10103910B1
公开(公告)日：2018-10-16
申请号：US15903978
申请日：2018-02-23
申请人： Dell Products L.P.
发明人： Umesh Chandra , Bhyrav M. Mutnury , Arun Reddy Chada , Han Deng
摘要： A PAM equalization optimization system includes a BIOS coupled to a PAM engine and an equalization engine. The BIOS determines an effective equalization tap number of equalization taps that each provide an equalization result above a predetermined amount. The BIOS then determines whether the effective equalization tap number is greater than a predetermined fraction of an available equalization tap number of equalization taps that are available for equalizing a signal. When the effective equalization tap number is greater than the predetermined fraction of the available equalization tap number, the BIOS causes the equalization engine to perform per-symbol equalization on signals modulated using the PAM engine. When the effective equalization tap number is not greater than the predetermined fraction of the available equalization tap number, the BIOS causes the equalization engine to perform per-bit equalization on signals modulated using the PAM engine.
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