Low Noise Tunnel Diode Down Converter Having Conversion Gain
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Low Noise Tunnel Diode Down Converter Having Conversion Gain
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Author : Kern Ko Nan Chang
language : en
Publisher:
Release Date :
Low Noise Tunnel Diode Down Converter Having Conversion Gain written by Kern Ko Nan Chang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with Diodes categories.
Experimental Tunnel Diode Converter For Conversion Of X Band Frequencies To Uhf
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Author :
language : en
Publisher:
Release Date : 1962
Experimental Tunnel Diode Converter For Conversion Of X Band Frequencies To Uhf written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with categories.
A tunnel-diode down converter designed and developed for conversion from X-band frequencies to UHF has proved that low noise figures are possible, when a forward bias voltage is chosen in the first region of the I-V characteristic of the tunnel diode so that the conductance Go is positive. When a sufficient local-oscillator voltage can drive the operating point into the negative-resistance region, the tunnel diode down converter exhibits a conversion gain and a noise figure 3 to 4 db lower than attainable with converters having common diodes. With a local oscillator frequency of 8.33 kMc and an IF of 30 mc, an average noise figure of 4.5 db was measured. For mismatched conditions of the in put admittance, a generator conductance Gg of 2 mhos was advantageously chosen in order to get a low noise factor and high gain. A microstrip line transformer was used to establish the high generator conductance. The measured noise figure of an improved second device, similar to the first one, was 3.0 db. The experimental devices are of attractively small size.
A Tunnel Diode Parametric Down Converter
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Author : Leland Lovell Long
language : en
Publisher:
Release Date : 1962
A Tunnel Diode Parametric Down Converter written by Leland Lovell Long and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Automobile racing drivers categories.
"The problem, as presented, is to derive analytical expressions for the conversion gain, bandwidth, and noise figure of a self excited tunnel diode converter and to verify, if possible, the validity of these express- ions by building such a converter. These analytical results are presented and discussed. The converter circuit is shown along with the resulting intermediate frequency output. Gain and bandwidth measurements are also given. It is concluded that the self excited converter could very definitely be of value as a low noise pre-amplifying device in the ultra-high frequency and microwave frequency ranges"--Abstract, leaf ii
Low Noise Tunnel Diode Mixers And Converters
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Author : Raoul Pettai
language : en
Publisher:
Release Date : 1962
Low Noise Tunnel Diode Mixers And Converters written by Raoul Pettai and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with categories.
The experimental and theoretical results are described of a program to develop and construct low-noise tunnel diode mixers and converters. Studies lead to a conclusion that reasonably low noise figures are possible when the diode is biased near the valley. This allows the tunnel diode converter to be operated with positive input and output conductances which simplifies the stability problem. The possibility of conversion gain with positive terminal conductances is also discussed. Assumptions which limit the accuracy of the theoretical results are pointed out. A separate section is devoted to the theory of measurement techniques and apparatus. (Author).
Principles Of Tunnel Diode Circuits
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Author : Woo Foung Chow
language : en
Publisher:
Release Date : 1964
Principles Of Tunnel Diode Circuits written by Woo Foung Chow and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with Technology & Engineering categories.
Advances In Microwaves
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Author : Leo Young
language : en
Publisher: Academic Press
Release Date : 2013-10-22
Advances In Microwaves written by Leo Young and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-22 with Technology & Engineering categories.
Advances in Microwaves, Volume 2 focuses on the developments in microwave solid-state devices and circuits. This volume contains six chapters that also describe the design and applications of diplexers and multiplexers. The first chapter deals with the parameters of the tunnel diode, oscillators, amplifiers and frequency converter, followed by a simple physical description and the basic operating principles of the solid state devices currently capable of generating coherent microwave power, including transistors, harmonic generators, and tunnel, avalanche transit time, and diodes. The next chapters discuss the characteristics of cooled parametric amplifiers; effective input noise temperature, gain-bandwidth product; gain stability, shot noise and varactor heating; and design and analysis principles of varactor harmonic generators. A chapter surveys the theory, design, and applications of diplexers and multiplexers. The concluding chapter treats the numerical solution of broad classes of problems that arise in the use of TEM-mode transmission lines.
Fundamentals Of Microwave Electronics
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Author : V. N. Shevchik
language : en
Publisher: Elsevier
Release Date : 2014-06-20
Fundamentals Of Microwave Electronics written by V. N. Shevchik and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-06-20 with Science categories.
Electronics and Instrumentation, Volume 16: Fundamentals of Microwave Electronics provides an understanding of the phenomena that occur in the physics and technology of microwave electron devices. This book presents a systematic examination of the physical processes that take place in microwave electron devices. Organized into three parts encompassing seven chapters, this volume begins with an overview of oscillatory systems used in microwave electron devices. This text then explains the two fundamental methods of producing density modulation of an electron beam. Other chapters consider the energy exchange between an electron beam and an alternating electric field, which is associated with a change in electron kinetic energy. This book discusses as well the basic operational principles of the various microwave electron devices. The final chapter deals with microwave devices with resonator or delay line circuits. This book is a valuable resource for light electrical engineers. Students specializing in the microwave field will also find this book useful.
Noise In Tunnel Diode Mixers
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Author : Shih-fang Lo
language : en
Publisher:
Release Date : 1962
Noise In Tunnel Diode Mixers written by Shih-fang Lo and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Frequency changers categories.
Problems Of Space Radio Communication
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Author : Nikolaĭ Timofeevich Petrovich
language : en
Publisher:
Release Date : 1966
Problems Of Space Radio Communication written by Nikolaĭ Timofeevich Petrovich and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Artificial satellites in telecommunication categories.
Analysis And Synthesis Of Tunnel Diode Circuits
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Author : J. O. Scanlan
language : en
Publisher:
Release Date : 1966
Analysis And Synthesis Of Tunnel Diode Circuits written by J. O. Scanlan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Tunnel diodes categories.