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Design and tradeoff characterizations of high frequency balanced amplifier for rf integrated system / Tai Wen Qi

Design and tradeoff characterizations of high frequency balanced amplifier for rf integrated system_Tai Wen Qi_E3_2005_NI
Laporan ini merangkumi rekabentuk, analisis dan implementasi penguat seimbang berfrekeunsi tinggi yang beroperasi pada 1.9 GHz. Rekabentuk sistem dan litar dijalankan dengan bantuan Agilent’s Advanced Design System (ADS 2003A). Penguat seimbang adalah sejenis penguat yang menggabungkan dua penguat tunggal yang sama menjadi satu unit tunggal, di mana penguatan isyarat RF dapat dijalankan. Terdapat dua jenis penguat tunggal iaitu penguat yang menggunakan rangkaian elemen ‘lumped’ dan ‘microstrip’. Dalam projek ini, kedua-dua jenis penguat telah direka dan dibina. Analisis dan perbandingan yang dibuat kepada dua topologi ini disertakan di dalam laporan ini. Rekacipta awalan menggunakan komponen ideal memberikan struktur asas dan litar keseluruhan penguat. Pada tahap permulaan, langkah-langkah rekabentuk termasuk pengiraan matematik dan analisis. Langkah rekabentuk terperinci yang menggantikan komponen ideal dengan model sebenar dijalankan setelah struktur litar didapati. Pelbagai jenis simulasi menggunakan ADS dijalankan untuk mendapatkan prestasi penguat seimbang. Dengan bantuan ADS, nilai dalam rekaan dioptimasikan untuk mendapatkan prestasi yang dikehendaki. Penguat seimbang diimplementasikan secara perisian dan perkakasan. Rekaan bentangan litar menggunakan fungsi Layout ADS merupakan sebahagian daripada implementasi perkakasan. Litar penguat dibina di atas papan cetakan litar (PCB). Perkakasan yang dibina diuji dengan menggunakan ‘network analyzer’ dan ‘spectrum analyzer’ untuk mendapatkan sifat dan spesifikasi litar yang dikehendaki. Bacaan daripada ujian perkakasan dibandingkan dengan keputusan simulasi. Perbezaan yang wujud dibincangkan dalam laporan ini. _________________________________________________________________________________________ This report included design, analysis and implementation of high frequency balanced amplifier operate at center frequency of 1.9 GHz. System and circuit design are carried out with the aid of a powerful design tool - Agilent’s Advanced Design System (ADS 2003A). Balanced amplifier is a type of amplifier that combines 2 similar single-ended amplifiers into single unit, which can perform amplification of input RF signal. There are two common types of single-ended amplifier: amplifier with lumped element and microstrip matching network. In this project, both types of amplifier are designed and built. Analysis and comparison carried out on this two different topology are included in this report. Initial design using ideal component provided the basic structure and complete circuit of the amplifiers. In the beginning stage, the design steps included mathematical calculations and analysis. Detailed design steps with replaced actual model are carried out after the structure of circuits are obtained. Different types of simulation using ADS are done to observe performances of the balanced amplifiers. Using features of ADS, the values of design are optimized to obtain required performances. Result of simulations are included in this report. The balanced amplifier design are implemented in both software and hardware. Circuit’s layout design using ADS’s features is part of hardware implementations. The amplifier circuits are built on printed circuit board (PCB). The hardwares built are tested with network and spectrum analyzer in to obtain required characteristics and specifications. Measurements taken from hardware test are compared to results from simulations. Variations that existed from both results are discussed in this report.
Contributor(s):
Tai Wen Qi - Author
Primary Item Type:
Final Year Project
Language:
English
Subject Keywords:
high frequency balanced amplifier; spectrum analyzer; simulations
First presented to the public:
3/1/2005
Original Publication Date:
8/6/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Electrical & Electronic Engineering
Citation:
Extents:
Number of Pages - 95
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-08-06 16:25:27.349
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Nor Hayati Ismail

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Design and tradeoff characterizations of high frequency balanced amplifier for rf integrated system / Tai Wen Qi1 2018-08-06 16:25:27.349