Absorption study of triangular and rectangular slotted on hollow pyramidal absorber / Mohamad Faisal Asmadi … [et al.]

Asmadi, Mohamad Faisal and Abdullah, Hasnain and Fazin, Mas Izzaty and Razali, Ahmad Rashidy and Taib, Mohd Nasir and Ahmad, Azizah and Mohamad Noor, Norhayati (2020) Absorption study of triangular and rectangular slotted on hollow pyramidal absorber / Mohamad Faisal Asmadi … [et al.]. ESTEEM Academic Journal, 16. pp. 21-30. ISSN 2289-4934

Official URL: https://uppp.uitm.edu.my

Abstract

Today, electromagnetic wave theory is commonly used in many engineering devices. However, such devices produce electromagnetic (EM) radiation, damaging people's health and the impact of other electronic device's operation. Therefore, Microwave Absorber has been widely used in anechoic chamber to measure equipment radiation and prevent unwanted radiation and electromagnetic interference. This research investigates the absorption performance of pyramidal absorbers with a slotted method design. This research used rectangular and triangular slotted on the hollow pyramidal absorber. There are six types of slotted: Design 1, Design 2, and Design 3 which have triangular shapes, and Design 4, Design 5, and Design 6, have rectangular shapes. The pyramidal absorber is produced using CST Microwave Studio Suite. Afterward, the fabrication process is performed using cardboard and coated with Powdered Activated Carbon (PAC). Measurement had been done successfully via far-field measurement using an arch method at 1 GHz to 12 GHz. The slotted pyramidal absorber's absorptivity was taken in each frequency band and was tabulated in figure 10. The result is compared with their maximum absorption in each of the four frequency bands. Comparison based on slot design, triangular and rectangular each had its own advantages at a certain frequency. However, small rectangular slot of Design 1 shows consistent absorption performance at all frequency band.

Metadata

Item Type: Article
Creators:
Creators
Email / ID Num.
Asmadi, Mohamad Faisal
faisallasmadi21@gmail.com
Abdullah, Hasnain
UNSPECIFIED
Fazin, Mas Izzaty
UNSPECIFIED
Razali, Ahmad Rashidy
UNSPECIFIED
Taib, Mohd Nasir
UNSPECIFIED
Ahmad, Azizah
UNSPECIFIED
Mohamad Noor, Norhayati
UNSPECIFIED
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Microwave communication systems
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Microelectronics
Divisions: Universiti Teknologi MARA, Pulau Pinang
Journal or Publication Title: ESTEEM Academic Journal
UiTM Journal Collections: UiTM Journal > ESTEEM Academic Journal (EAJ)
ISSN: 2289-4934
Volume: 16
Page Range: pp. 21-30
Keywords: microwave absorbers; hollow pyramidal absorber; slotted; absorption performance
Date: December 2020
URI: https://ir.uitm.edu.my/id/eprint/40644
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