Relationship between Reflection Coefficient and Moisture Content of Oil Palm Fruit Using an Open-Ended Rectangular Waveguide Technique

Ali, Adib (2007) Relationship between Reflection Coefficient and Moisture Content of Oil Palm Fruit Using an Open-Ended Rectangular Waveguide Technique. Masters thesis, Universiti Putra Malaysia.

[img] PDF
230Kb

Abstract

The thesis describes the development of an open-ended waveguide technique for the determination ofof complex permittivity and moisture content of the oil palm fruits of various degree of fruit ripeness. The operating frequency of the waveguide operate betweenwas between 8 GHz and 12 GHz. A theoretical analysis has beenncarried out to determine the relationship between reflection coefficient, frequency and moisture content in the oil palm fruit. The propagation of electromagnetic wave is assumed to be transverse electric (TZE) mode. The measurement system consists of thea standard waveguide and a PC-controlled vector network analyzer (VNA). Dielectric measurement software A computer program has been developed to control and acquire reflection data from the VNA using Agilent VEE at each 201 frequency points between 8 GHz and 12 GHz. Comparison results between calculated and measured reflection coefficient are presented. A calibration equation relating the measured and predicted moisture content has been established based on more than 1500 fruit samples. The actual moisture content werewas found determineddetermining by standard oven drying method. The calibration equation was found to be accurate within ± 5 % when tested on 50 different fruit samples which each biker have 30 fruits with same moisture content.of various moisture contents.

Item Type:Thesis (Masters)
Subject:Wave guides.
Subject:Oil palm - Moisture.
Chairman Supervisor:Zulkifly Abbas, PhD
Call Number:FS 2007 15
Faculty or Institute:Faculty of Science
ID Code:4997
Deposited By: Rosmieza Mat Jusoh
Deposited On:02 Apr 2010 06:45
Last Modified:27 May 2013 07:19

Repository Staff Only: Edit item detail


Universiti Putra Malaysia Institutional Repository

Universiti Putra Malaysia Institutional Repository is an on-line digital archive that serves as a central collection and storage of scientific information and research at the Universiti Putra Malaysia.

Currently, the collections deposited in the IR consists of Master and PhD theses, Master and PhD Project Report, Journal Articles, Journal Bulletins, Conference Papers, UPM News, Newspaper Cuttings, Patents and Inaugural Lectures.

As the policy of the university does not permit users to view thesis in full text, access is only given to the first 24 pages only.