Conference Paper

Investigation of oil palm ash microwave absorber for broadband application

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Abstract

The investigation of oil palm ash microwave absorbers involves the design, simulation and fabrication of an effective broadband frequency for anechoic chamber. The resistive and magnetic materials in the oil palm ash compose its potential to be used as microwave absorbing materials. These oil palm ash absorbers are simulated using CST Microwave Studio. The arch measurement is executed to investigate the reflectivity performance of the oil palm ash absorbers. These absorbers are designed to operate effectively between the frequencies of 8 GHz and 12 GHz for broadband application.

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... Biowaste such as bagasse is a very efficient material for microwave absorption and is reported better than rice husks due to its more carbon content. Noordin et al. (2012) reported the fabrication of microwave absorber using oil palm ash. The chemical composition of oil palm ash consists of CaO, MgO, SO 3 , K 2 O, SiO 2 , Fe 2 O 3 and CO 2 . ...
... ), banana leaves(Noordin et al. 2012), dried banana leaves(Kaur et al. 2015), agriculture waste (banana leaves/rice husk/rice straw, wheat straw)(Ma et al. 2019), rice husk(Nornikman et al. 2011), coconut shells(Salleh et al. 2011), tea waste(Akgül et al. 2019), peanut and hazelnut shells ...
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... The others material that used is sugar cane baggase , banana leaves (Farhany, 2012), rubber tire dust (Cheng, 2012), rubber wood sawdust-based (Azizah, 2015), corn stover (Smythe, 2014) absorbing paint (Hasnain, 2012), rice husk-carbon nanotube composites (Lee, 2013, oil palm ash (Noordin, 2012), sugarcane-beach sand based (Panwar, 2014) and others. ...
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... With the development of high-tech surveillance and precision guidance technologies, the demand of stealth ability in weapons has reached a higher level [1][2][3], especially in air weaponry operated on high temperature [4][5][6][7][8][9][10][11][12]. Ceramic matrix composite is one of the most advantageous high-temperature stealth materials presently studied due to their desirable properties of high specific strength and specific modulus, as well as resistance to erosion and oxidation. ...
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... The two most popular microwave absorbers that are currently on the market are Eccosorb's VHP-8-NRL absorber [17] and TDK ICT-030 absorber [18]. The following are references to others who have conducted research on microwave absorbers: Hasnain et al. [19], Salleh et al. [20], Yusof et al. [21], Farhany et al. [22], Noordin et al. [23], Nornikman et al. [24], Malek et al. [25], and Ibrahim et al. [26]. ...
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