(For USM Staff/Student Only)

EngLib USM > Ω School of Electrical & Electronic Engineering >

Analysis of rf-to-voltage power detector for outdoor application / Ng Gua Bin

Analysis of rf-to-voltage power detector for outdoor application_Ng Gua Bin_E3_2009_875004514_00003095335_NI
Disertasi ini mengenai analisi RF-to- Voltan alat pengesan kuasa untuk kegunaan di luar. Alat pengesan kuasa RF ialah satu alat mengesan kuasa keluaran daripada alat penguat kuasa RF untuk bertujuan menyelaras kuasa itu. Alat ini amat penting dalam sistem perhubungan wayarles disebabkan oleh setiap sistem mempunyai piawai dan kekuatan kuasa tertentu. Ini menjadikan keperluan untuk memilih and menguasai tahap kuasa keluaran dengan tepat. Ia sebagai asas yang penting dalam pelbagai sistem perhubungan rekabentuk. Oleh itu, AGC menjadikan sistem yang penting terutamanya untuk alat atau sistem mempunyai variasi amplitude yang lebar pada isyarat keluaran kerana masalah ini akan merosakkan isyarat informasi. Walaupun pelbagai jenis alat pengesan kuasa RF boleh didapati di pasaran, penguat kuasa logarithmic akan digunakan dalam AGC aplikasi selepas beberapa faktor ditimbangkan. Sebelum memrealisasikan dalam pratikal, analisi tentang penguat kuasa logarithmic dan AGC akan dibuat dengan menggunakan ADS. Selepas ini, pratikal AGC akan dibina dan dianalisi dalam ‘breadboard’ dengan mengikuti litaran simulasi. Pratikal litar AGC menunjukkan pretasi yang baik dalam frekuensi 500kHz dan 1MHz dengan mempunyai 40dB ‘dynamic range’. ____________________________________________________________________________________ This is a dissertation regarding the analysis of RF power detector for outdoor application. RF power detector is an apparatus provided for detection of the output power from an RF power amplifier for purposes of controlling the output power. It is important in wireless communication system since each system has a specific power regulation and strength. This leads to the need for selectivity and good control of the output signal’s level. This became a fundamental issue in the design of any communication system. Therefore, AGC circuits become an important system especially for any device or system where wide amplitude variations in the output signal could lead to a lost of information or to an unacceptable performance of the system. Since there are various types of power detector available in the market, logarithmic amplifier was utilized to be implemented in AGC circuit after considering some factors. Before implementing on practical environment, analysis on log amp and AGC circuit is done by using ADS software. After that, the AGC practical circuit is presented and analyzed on breadboard according to the simulation circuit. From the analysis, the performance of AGC practical circuit is better in between 500 kHz and 1 MHz frequency range with a 40dB dynamic range.
Contributor(s):
Ng, Gua Bin - Author
Primary Item Type:
Final Year Project
Identifiers:
Barcode : 00003095335
Accession Number : 875004514
Language:
English
Subject Keywords:
RF power detector; wireless communication system; simulation circuit.
First presented to the public:
1/4/2009
Original Publication Date:
2/21/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Electrical & Electronic Engineering
Citation:
Extents:
Number of Pages - 86
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-02-21 16:43:43.762
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Nor Hayati Ismail

All Versions

Thumbnail Name Version Created Date
Analysis of rf-to-voltage power detector for outdoor application / Ng Gua Bin1 2018-02-21 16:43:43.762