Date of Graduation

5-2023

Document Type

Thesis

Degree Name

Bachelor of Science in Electrical Engineering

Degree Level

Undergraduate

Department

Electrical Engineering

Advisor/Mentor

El-Ghazaly, Samir

Committee Member/Reader

Mantooth, H. Alan

Abstract

This thesis focuses on creating and testing two different simulation environments in HFSS and analyzing the effectiveness of a micro-Faraday Cage on the RF Sensitive component by exchanging the SMPS and RF Sensitive component with 25GHz Microstrip Patch Antennas. Modern integrated circuit board systems consist of components that can generate electromagnetic signals and components that may be sensitive to electromagnetic interference. A switched-mode power supply (SMPS) is one component capable of producing electromagnetic interference (EMI) through its fundamental and harmonic switching frequency. By using a Faraday Cage to shield the RF-sensitive element, it is possible to reduce its susceptibility to EMI from other systems and retain the signal's integrity. To develop the micro-Faraday cage, HFSS can be used to create a simulation environment to design a micro-Faraday cage in an LTCC (Low-Temperature Co-Fired Ceramics) substrate as LTCC allows components to be embedded within the substrate. The initial dimensions were 40mm x 40mm x 10mm but then the height was reduced to 0.254 mm (10 mil) to cut down on sim run time. After corrections, The Micro Faraday cage was shown to attenuate the signal in both two and three antenna systems when compared to the antenna that was surrounded only by the core material which only experienced a minor loss. This preliminary data shows promising results for the effectiveness of the MFC however before an affirmative decision can be made on the Micro-Faraday Cage’s effectiveness more trials need to be done using different cage configurations and alternate antenna positioning.

Keywords

Micro-Faraday Cage; Antenna Design; Shielding; S-Parameters

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