Crosstalk Reduction Strategies on UCPW Transmission Lines Supported by Real Application Data: Experimental Analysis of Point Capacity

Crosstalk between transmission lines, primarily caused by capacitive coupling, is a major challenge in high-frequency electronic systems, leading to signal integrity degradation. This study investigates the effectiveness of capacitors placed between ground planes in ungrounded coplanar waveguide (UC...

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Main Authors: Suleyman Coskun, Merih Yildiz, Temel Sonmezocak
Format: Article
Language:English
Published: MDPI AG 2025-03-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/15/7/3589
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author Suleyman Coskun
Merih Yildiz
Temel Sonmezocak
author_facet Suleyman Coskun
Merih Yildiz
Temel Sonmezocak
author_sort Suleyman Coskun
collection DOAJ
description Crosstalk between transmission lines, primarily caused by capacitive coupling, is a major challenge in high-frequency electronic systems, leading to signal integrity degradation. This study investigates the effectiveness of capacitors placed between ground planes in ungrounded coplanar waveguide (UCPW) transmission lines fabricated on FR4 circuit boards. A vector network analyzer (VNA) was used to measure near-end crosstalk (S<sub>31</sub>) reduction, with improvements of up to −40 dB observed. Experiments were conducted on transmission lines of 100 mm and 200 mm lengths, demonstrating the impact of capacitor placement on mitigating interference. The results indicate that this method provides a scalable and practical approach to improving signal integrity in compact, high-density electronic designs. These findings contribute to a deeper understanding of crosstalk mitigation strategies, offering valuable insights for applications in high-speed communication and RF circuit design. This work systematically analyzes the role of capacitor placement in reducing crosstalk, addressing a critical gap in the literature and paving the way for future advancements in transmission line optimization.
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spelling doaj-art-bde1d4f371584c7793a149cb49f270f82025-08-20T03:06:31ZengMDPI AGApplied Sciences2076-34172025-03-01157358910.3390/app15073589Crosstalk Reduction Strategies on UCPW Transmission Lines Supported by Real Application Data: Experimental Analysis of Point CapacitySuleyman Coskun0Merih Yildiz1Temel Sonmezocak2Department of Electrical and Electronics Engineering, Dogus University, Istanbul 34775, TürkiyeDepartment of Electrical and Electronics Engineering, Dogus University, Istanbul 34775, TürkiyeDepartment of Electrical and Electronics Engineering, Dogus University, Istanbul 34775, TürkiyeCrosstalk between transmission lines, primarily caused by capacitive coupling, is a major challenge in high-frequency electronic systems, leading to signal integrity degradation. This study investigates the effectiveness of capacitors placed between ground planes in ungrounded coplanar waveguide (UCPW) transmission lines fabricated on FR4 circuit boards. A vector network analyzer (VNA) was used to measure near-end crosstalk (S<sub>31</sub>) reduction, with improvements of up to −40 dB observed. Experiments were conducted on transmission lines of 100 mm and 200 mm lengths, demonstrating the impact of capacitor placement on mitigating interference. The results indicate that this method provides a scalable and practical approach to improving signal integrity in compact, high-density electronic designs. These findings contribute to a deeper understanding of crosstalk mitigation strategies, offering valuable insights for applications in high-speed communication and RF circuit design. This work systematically analyzes the role of capacitor placement in reducing crosstalk, addressing a critical gap in the literature and paving the way for future advancements in transmission line optimization.https://www.mdpi.com/2076-3417/15/7/3589crosstalk noisesignal integritycoplanar waveguidesinterferenceprinted circuit
spellingShingle Suleyman Coskun
Merih Yildiz
Temel Sonmezocak
Crosstalk Reduction Strategies on UCPW Transmission Lines Supported by Real Application Data: Experimental Analysis of Point Capacity
Applied Sciences
crosstalk noise
signal integrity
coplanar waveguides
interference
printed circuit
title Crosstalk Reduction Strategies on UCPW Transmission Lines Supported by Real Application Data: Experimental Analysis of Point Capacity
title_full Crosstalk Reduction Strategies on UCPW Transmission Lines Supported by Real Application Data: Experimental Analysis of Point Capacity
title_fullStr Crosstalk Reduction Strategies on UCPW Transmission Lines Supported by Real Application Data: Experimental Analysis of Point Capacity
title_full_unstemmed Crosstalk Reduction Strategies on UCPW Transmission Lines Supported by Real Application Data: Experimental Analysis of Point Capacity
title_short Crosstalk Reduction Strategies on UCPW Transmission Lines Supported by Real Application Data: Experimental Analysis of Point Capacity
title_sort crosstalk reduction strategies on ucpw transmission lines supported by real application data experimental analysis of point capacity
topic crosstalk noise
signal integrity
coplanar waveguides
interference
printed circuit
url https://www.mdpi.com/2076-3417/15/7/3589
work_keys_str_mv AT suleymancoskun crosstalkreductionstrategiesonucpwtransmissionlinessupportedbyrealapplicationdataexperimentalanalysisofpointcapacity
AT merihyildiz crosstalkreductionstrategiesonucpwtransmissionlinessupportedbyrealapplicationdataexperimentalanalysisofpointcapacity
AT temelsonmezocak crosstalkreductionstrategiesonucpwtransmissionlinessupportedbyrealapplicationdataexperimentalanalysisofpointcapacity