Journal ArticleDOI
On The Problem of Using Guard Traces for High Frequency Differential Lines Crosstalk Reduction
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In this article, the problem of using guard traces for reducing crosstalk between differential transmission line pairs is investigated, both experimentally and by full-wave electromagnetic (EM) simulations.Abstract:
In this paper, the problem of using guard traces for reducing crosstalk between differential transmission line pairs is investigated, both experimentally and by full-wave electromagnetic (EM) simulations. Different cases of differential lines crosstalk are treated with and without guard trace separation between the differential line pairs. Coated microstrip printed circuit board test structures including thru-reflect-line calibration standards are designed and fabricated on a high frequency laminate material, allowing direct measurement of crosstalk between adjacent differential line pairs in the absence and in the presence of guard traces stitched with vias of regular spacing. The test structures are characterized with mixed-mode scattering parameters using a physical layer test system. Different configurations (of differential line pairs) without guard trace, with floating guard traces (which are terminated and nonterminated) and with a solid guard trace separation are investigated using a High Frequency Structure Simulator (a commercial full-wave 3-D EM simulation tool). The experimental data are compared with the simulation results, and some conclusions and guidelines on the effect of guard traces for alleviating crosstalk between differential transmission lines are presentedread more
Citations
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Journal ArticleDOI
Overview of Signal Integrity and EMC Design Technologies on PCB: Fundamentals and Latest Progress
TL;DR: The fundamentals and latest progress of modeling, analysis, and design technologies for signal integrity and electromagnetic compatibility on PCB and package in the past decades are reviewed and the necessity of practical training of designers is mentioned.
Patent
Three dimensional integrated automotive radars and methods of manufacturing the same
TL;DR: In this article, a low-cost, compact radar for adaptively forming beams and independently steering the beams to improve the noise and sensitivity of the radar is presented, which includes a printed circuit board, a low cost multi-layer organic substrate, and a three dimensional (3D) radio frequency (RF) front end that is flood mounted on the substrate.
Patent
Dual-band antenna array and rf front-end for mm-wave imager and radar
TL;DR: In this paper, the authors proposed a radar with a perforated patch, an antenna positioned underneath the patch and connected to the second microstrip array, and a transmit/receive module connected to a bottom surface of the second liquid crystal polymer layer.
Journal ArticleDOI
Suppression of crosstalk using serpentine guard trace vias
TL;DR: The SGT via (SGTV) approach is proposed in which grounded vias are added to the SGT at appropriate locations, and the ratio between the lengths of the horizontal and vertical sections of the guard trace is adjusted to minimize NEXT and FEXT.
Patent
Dual-band antenna array and RF front-end for automotive radars
TL;DR: In this paper, the automotive radar includes a printed circuit board having a top surface and a bottom surface, and a processor mounted on the bottom surface of the printed circuit, which is configured to transmit a first frequency signal to the first microstrip array and a second frequency signal in a perforated patch.
References
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High-speed digital design: a handbook of black magic
TL;DR: In this paper, the high speed properties of logic gates measurement techniques are discussed, including transmission lines, ground planes and layer stacking terminations, connectors, ribbon cables, clock distribution clock oscillators, etc.
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TL;DR: In this paper, the authors present a theoretical analysis of planar transmission lines with parallel-coupled TEM Directional Couplers and tight couplers, as well as Coupled-Line Filter Fundamentals.
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TL;DR: This book provides a much-needed, practical guide to the state of the art of modern digital system design, combining easily accessible explanations with immensely useful problem-solving strategies.
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Signal Integrity Issues and Printed Circuit Board Design
TL;DR: In this paper, renowned engineer, author, and seminar leader Douglas Brooks teaches PCB designers how to successfully design boards for any high-speed application, starting with an easy-tounderstand electronics primer for every PCB designer, then offers practical, real-world solutions for every important signal-integrity problem.
Journal ArticleDOI
Twisted differential line structure on high-speed printed circuit boards to reduce crosstalk and radiated emission
TL;DR: In this article, a twisted differential line (TDL) structure was proposed for high-speed multilayer PCB by using a concept similar to a twisted pair in a cable interconnection.
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