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Design of a 2.4ghz wireless transmitter/Lum Sek Kok

Design of a 2.4ghz wireless transmitter_Lum Sek Kok_E3_2008_NI
Projek ini memperkenalkan satu reka bentuk pemancar wayarles berfrekuensi 2.4GHz dengan menggunakan teknik pemodulatan bernama Quadrature Phase-Shift Keying (QPSK), di mana QPSK adalah teknik modulasi berdigit yang paling terkenal dalam aplikasi seperti satelit dan komunikasi bergerak selular yang berdigit. Reka bentuk pemancar wayarles berfrekuensi 2.4GHz ini tertumpu pada reka bentuk perkakasan dengan menggunakan perisian OrCAD, di mana ia meliputi empat bahagian iaitu Digital-to-Analog Converter (DAC), satu penguat arus untuk DAC, pemodulat I-Q (I-Q Modulator) dan penguat kuasa. Projek ini merangkumi reka bentuk seni bina pemancar wayarles, simulasi reka bentuk seluruh litar terlibat, reka bentuk dan pembuatan litar pada Papan Litar Bercetak (PCB), dan pengukuran dan analisis pada reka letak PCB (PCB Layout). Pelaksanaan pemancar wayarles di papan PCB telah siap, bersama dengan hasil simulasi, selaras dengan prestasi dan kekompleksan yang wujud dari pelaksanaan yang fleksibel ini. Dengan fleksibiliti pendekatan perisian, prestasi keseluruhan pemancar wayarles yang diperoleh ini dianalisa dengan menggunakan perisian Advanced Design System (ADS), membolehkan pemancar wayarles berfrekuensi 2.4GHz ini berguna dalam beberapa aplikasi di alam komunikasi pesat, di mana prestasi tahap pencapaian, saiz dan berat adalah aspek kritikal dalam menentukan kekompleksan perkakasan atau kos. ___________________________________________________________________________________ This project introduces design of a 2.4GHz wireless transmitter using Quadrature Phase-Shift Keying (QPSK) modulation technique, where QPSK is the most popular digital modulation technique used for satellite and digital cellular mobile communications. The design of 2.4GHz wireless transmitter concentrates on hardware design using OrCAD software where it consists of four parts of designs which are Digital-to-Analog Converter (DAC), a current amplifier for DAC, I-Q Modulator and Power Amplifier. This project includes the architecture design of wireless transmitter, simulation of the entire design involved, design and fabrication of the circuit on Printed Circuit Board (PCB), and measurement and analysis on the PCB Layout of the circuit. The wireless transmitter implementation on PCB is completed, along with the simulation results with regards to the performance and complexity associated with such a flexible implementation. The obtained overall performance of the wireless transmitter using Advanced Design System (ADS) software is analyzed, along with the flexibility of the software approach, which makes 2.4GHz wireless transmitter implementation effective for several applications with rapid communications, where state of the art performance, size and weights are critical aspects with respect to hardware complexity or cost.
Contributor(s):
Lum Sek Kok_ - Author
Primary Item Type:
Final Year Project
Language:
English
Subject Keywords:
wireless ; transmitter ; architecture
First presented to the public:
5/1/2008
Original Publication Date:
2/19/2020
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Electrical & Electronic Engineering
Citation:
Extents:
Number of Pages - 90
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2020-02-24 16:55:58.552
Submitter:
Nor Hayati Ismail

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