Design and Optimization of a Plasma-Based Power Limiter for 24 GHz Automotive Radar Systems with Enhanced Electromagnetic Interference Suppression

Taghi zadeh, Hamed; Rashidi, Ali Jabbar; Taskhiri, Mohammad Mahdi

doi:10.22068/ase.2025.715

Volume 15, Issue 3 (9-2025) ASE 2025, 15(3): 4811-4817 | Back to browse issues page

‎ 10.22068/ase.2025.715

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Taghi zadeh H, Rashidi A J, Taskhiri M M. Design and Optimization of a Plasma-Based Power Limiter for 24 GHz Automotive Radar Systems with Enhanced Electromagnetic Interference Suppression. ASE 2025; 15 (3) :4811-4817
URL: http://www.iust.ac.ir/ase/article-1-715-en.html

Design and Optimization of a Plasma-Based Power Limiter for 24 GHz Automotive Radar Systems with Enhanced Electromagnetic Interference Suppression

Hamed Taghi zadeh

, Ali Jabbar Rashidi

, Mohammad Mahdi Taskhiri

Malek Ashtar University of Technology

Abstract: (1002 Views)

Automotive radar systems operating in the 24 GHz band are widely used in Advanced Driver Assistance Systems (ADAS) due to their cost-effectiveness and robust performance across diverse environmental conditions. However, these systems face critical vulnerabilities from electromagnetic interference (EMI) and high-power microwave (HPM) threats, which can degrade detection accuracy. This study presents a novel plasma-based limiter employing a Gas Discharge Tube (GDT) within an optimized K-band waveguide (10.668 × 4.318 mm) filled with Rogers RO3035 dielectric (εr = 3.6). The design achieves exceptional metrics: 0.9 dB insertion loss and 21.5 dB return loss during normal operation, while providing over 30 dB isolation against HPM signals with a sub-100 ns response time. These characteristics position this solution as an industry-leading protection mechanism for next-generation automotive radars.

Keywords: Plasma, limiter, 24 GHz radar, EMI protection, Automotive safety, GDT technology

Full-Text [PDF 462 kb] (470 Downloads)

Type of Study: Research | Subject: Automotive electrical systems