A 1.8–3 GHz-band High Efficiency GaAs PHEMT Power Amplifier MMIC. PDF Download
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Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Abstract: This paper describes an S-band wideband high efficiency power amplifier based on the Nanjing Electron Device Institute's GaAs pHEMT monolithic microwave integrated circuit (MMIC) technology. To realize high efficiency, the two stage power amplifier is designed with a driver ratio of 1 : 8. The low-pass filter/high-pass filter combined matching circuit is applied to the amplifier to reduce the chip size, as well as to realize the optimum impedances over a wide bandwidth for high efficiency at each stage. Biased at class AB under a drain supply voltage of 5 V, the amplifier delivers 33–34 dBm saturated output power across the frequency range of 1.8 to 3 GHz with associated power-added efficiency of 35%–45% and very flat power gain of 25–26 dB in CW mode. The size of this MMIC is very compact with 2.7 × 2.75 mm 2 .
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Abstract: This paper describes an S-band wideband high efficiency power amplifier based on the Nanjing Electron Device Institute's GaAs pHEMT monolithic microwave integrated circuit (MMIC) technology. To realize high efficiency, the two stage power amplifier is designed with a driver ratio of 1 : 8. The low-pass filter/high-pass filter combined matching circuit is applied to the amplifier to reduce the chip size, as well as to realize the optimum impedances over a wide bandwidth for high efficiency at each stage. Biased at class AB under a drain supply voltage of 5 V, the amplifier delivers 33–34 dBm saturated output power across the frequency range of 1.8 to 3 GHz with associated power-added efficiency of 35%–45% and very flat power gain of 25–26 dB in CW mode. The size of this MMIC is very compact with 2.7 × 2.75 mm 2 .
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The performance of a very compact power amplifier MMIC for Q-band applications is reported. Using a 4-inch 0.25-æm GaAs power PHEMT process, this 4-stage amplifier achieved a linear gain of 19 dB over the 36 to 45 GHz frequency range, with an output power at 1-dB gain compression of 26 dBm (P-1dB=400 mW), and a saturated output power of 0.5 Watt (Psat=27 dBm), for a chip size of only 2.25 mm 2 (1.25 × 1.8 mm 2). Compared to state-of-the-art power amplifier MMICs operating in the 36-43 GHz frequency range, the combined output power- and gain- densities per chip area are nearly a factor two higher, namely 220 mW/mm 2 and 8.5 dB/mm 2.
Author: Jutta Kühn Publisher: KIT Scientific Publishing ISBN: 3866446152 Category : Power amplifiers Languages : en Pages : 264
Book Description
This work has arisen out of the strong demand for a superior power-added efficiency (PAE) of AlGaN/GaN high electron mobility transistor (HEMT) high-power amplifiers (HPAs) that are part of any advanced wireless multifunctional RF-system with limited prime energy. Different concepts and approaches on device and design level for PAE improvements are analyzed, e.g. structural and layout changes of the GaN transistor and advanced circuit design techniques for PAE improvements of GaN HEMT HPAs.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
A 3-Watt and a 5-Watt high-efficiency high-power amplifier are presented. The amplifiers are manufactured in a GaAs MESFET process. The 3-Watt amplifier exhibits 4 Watt output power at 10.6 GHz with an associated PAE of 43% and more than 3 Watt output power with more than 30% PAE from 8 GHz to 11.3 GHz. The 5-Watt amplifier exhibits 7W output power at 8.8 GHz with an associated PAE of 40% and more than 5 Watt output power with more than 30% PAE from 7.8 GHz to 10.6 GHz.
Author: Inder J. Bahl Publisher: Artech House ISBN: 1630819336 Category : Technology & Engineering Languages : en Pages : 593
Book Description
Fully updated and including entirely new chapters, this Second Edition provides in-depth coverage of the different types of RF and microwave circuit elements, including inductors, capacitors, resistors, transformers, via holes, airbridges, and crossovers. Featuring extensive formulas for lumped elements, design trade-offs, and an updated and current list of references, the book helps you understand the value and usefulness of lumped elements in the design of RF, microwave and millimeter wave components and circuits. You’ll find a balanced treatment between standalone lumped elements and their circuits using MICs, MMICs and RFICs technologies. You’ll also find detailed information on a broader range RFICs that was not available when the popular first edition was published. The book captures – in one consolidated volume -- the fundamentals, equations, modeling, examples, references and overall procedures to design, test and produce microwave components that are indispensable in industry and academia today. With its superb organization and expanded coverage of the subject, this is a must-have, go-to resource for practicing engineers and researchers in industry, government and university and microwave engineers working in the antenna area. Students will also find it a useful reference with its clear explanations, many examples and practical modeling guidelines.
Author: Paolo Colantonio Publisher: John Wiley & Sons ISBN: 9780470746554 Category : Technology & Engineering Languages : en Pages : 514
Book Description
Do you want to know how to design high efficiency RF and microwave solid state power amplifiers? Read this book to learn the main concepts that are fundamental for optimum amplifier design. Practical design techniques are set out, stating the pros and cons for each method presented in this text. In addition to novel theoretical discussion and workable guidelines, you will find helpful running examples and case studies that demonstrate the key issues involved in power amplifier (PA) design flow. Highlights include: Clarification of topics which are often misunderstood and misused, such as bias classes and PA nomenclatures. The consideration of both hybrid and monolithic microwave integrated circuits (MMICs). Discussions of switch-mode and current-mode PA design approaches and an explanation of the differences. Coverage of the linearity issue in PA design at circuit level, with advice on low distortion power stages. Analysis of the hot topic of Doherty amplifier design, plus a description of advanced techniques based on multi-way and multi-stage architecture solutions. High Efficiency RF and Microwave Solid State Power Amplifiers is: an ideal tutorial for MSc and postgraduate students taking courses in microwave electronics and solid state circuit/device design; a useful reference text for practising electronic engineers and researchers in the field of PA design and microwave and RF engineering. With its unique unified vision of solid state amplifiers, you won’t find a more comprehensive publication on the topic.
Author: Scott McLelland Publisher: ISBN: Category : Languages : en Pages : 43
Book Description
The work described in this report represents the design phase of a gallium arsenide monolithic microwave integrated circuit (GaAs MMIC) power amplifier using pseudomorphic high electron mobility transistors (PHEMTs). The main purpose was to investigate the possible performance of a power amplifier at 44 GHz for future application in a phased array antenna system. The design of a two stage amplifier, providing over 12 dB of gain over the frequency range 43.5-45.5 GHz, is described along with the expected large signal performance. It is expected that the amplifier will provide over 20 dBm of output power. The final layout of the complete chip is also presented.
Author: National Aeronautics and Space Adm Nasa Publisher: ISBN: 9781729365090 Category : Science Languages : en Pages : 60
Book Description
Over the course of this program, very extensive progress was made in Ka-band GaAs technology. At the beginning of the program, odd-shaped VPE MESFET wafers were used. A breakthrough in power and efficiency was achieved with highly doped (8 x 10(exp 17) cm(exp -3) MBE grown MESFET material. We obtained power of 112 mW with 16 dB gain and 21.6% efficiency at 34 GHz with a monolithic 50-100-250 micron amplifier. The next breakthrough came with the use of heterostructures grown by MBE (AlGaAs/InGaAs where the InGaAs is highly doped). This allowed us to achieve high power density with high efficiency. A benchmark 40% efficiency was achieved with a single-stage 100 micron MMIC at 32.5 GHz. The corresponding three-stage 50-100-250 micron amplifier achieved 180 mW with 23 dB gain and 30.3% efficiency. The next breakthrough came with 3-inch MBE grown PHEMT wafers incorporating an etch-stop layer for the gate recess (using RIE). Again, state-of-the-art performances were achieved: 40% efficiency with 235 mW output power and 20.7 dB gain. The single-stage 2 x 600 micron chip demonstrated 794 mW output power with 5 dB gain and 38.2% power-added efficiency (PAE). The Ka-band technology developed under this program has promise for extensive use: JPL demonstrated 32 GHz phased arrays with a three-stage amplifier developed under this contract. A variation of the three-stage amplifier was used successfully in a 4 x 4 phased array transmitter developed under another NASA contract. Saunier, Paul and Tserng, Hua Quen Glenn Research Center...
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Author: Jutta Kühn
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Author: Inder J. Bahl
Author: Paolo Colantonio
Author: Scott McLelland
Author: National Aeronautics and Space Adm Nasa
Author: Yin-tat Ma