Electrical engineering Hall of Fame: Guglielmo Marconi

Brittain, J.E.

doi:10.1109/jproc.2004.832946

Cited by 21 publications

(7 citation statements)

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“…Since the invention of the first practical radio frequency (RF) system by Guglielmo Marconi [1] [2] in the 1890s, the field of wireless communication has experienced significant diversity with more than a century of intense study and rapid development. From the beginning, controlling radio frequency (RF) signal flow and ratio has always been an important roles for the design of both RF devices and systems.…”

Section: Introductionmentioning

confidence: 99%

Batteryless and Self-Reconfigurable Multimode RF Network using All-Passive Energy Smart-Sensing

et al. 2021

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In recent years, replacing the external control stimuli with internal control using characteristics of radio frequency (RF) signals (such as waveform or power level) has attracted considerable attention to the design of reconfigurable multifunctional RF devices. However, even with the most exciting techniques, the control process always needs a chip-based system to sense the power level or waveform of the incident RF signal, which is realised by additional supporting electronic components of the sensing and microcontroller circuits. Therefore, to achieve a batteryless structure, a majority of conventional works focus on using energy harvesters to convert energy from external environmental sources to DC energy for the electronic circuits. Herein, we propose a novel alternative approach to replace the traditional energy harvesters in batteryless RF devices with all-passive energy smart-sensing circuits. By exploiting the features of a nonlinear semiconductor device under different incident RF power values, the proposed network can passively selfsense the RF power level and dynamically self-control RF signal flow and power ratio. The operation of the proposed network can be considered as purely self-adaptation with control from the RF power level. Moreover, normal RF devices can be transformed to all-passive and batteryless purely self-reconfigurable devices via integration with the proposed structure. As proof of concept, the proposed network is integrated with a two-port antenna to experimentally demonstrate its purely self-reconfigurable polarisation. The proposed strategy is hereby expected to extend the field of batteryless self-reconfigurable multifunctional RF devices and pave promising new paths for the development of future intelligent, smart RF devices.

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Section: Introductionmentioning

confidence: 99%

Batteryless and Self-Reconfigurable Multimode RF Network using All-Passive Energy Smart-Sensing

et al. 2021

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“…Reviewing his earlier arc-transmitter efforts, he wrote in his autobiography that he had been "totally unaware of the fact that in the little audion tube, which I was then using only as a radio detector, lay dormant the principle of oscillation which, had I but realized it, would have caused me to unceremoniously dump into the ash can all of the fine arc mechanisms which I had ever constructed, a procedure which a few years later actually took place all over the world" the new vacuum-tube transmitters, achieving an oversea working range of 50 km between ship aerials [6]. With the capable assistance of engineers including H. Round and C. Franklin, Guglielmo Marconi began experimenting with shortwave vacuum-tube transmitters by about 1916 [7]. However, Alexander Meissner was the first to amplify high-frequency radio signals by using a regenerative (positive) feedback in a vacuum triode.…”

Section: Introductionmentioning

confidence: 99%

Oscillators

2011

RF and Microwave Transmitter Design

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Limit of Liability/Disclaimer of Warranty: While the publisher and author have used their best efforts in preparing this book, they make no representations or warranties with respect to the accuracy or completeness of the contents of this book and specifically disclaim any implied warranties of merchantability or fitness for a particular purpose. No warranty may be created or extended by sales representatives or written sales materials. The advice and strategies contained herein may not be suitable for your situation. You should consult with a professional where appropriate. Neither the publisher nor author shall be liable for any loss of profit or any other commercial damages, including but not limited to special, incidental, consequential, or other damages.For general information on our other products and services or for technical support, please contact our Customer Care Department within the United States at (800) 762-2974, outside the United States at (317) 572-3993 or fax (317) 572-4002.Wiley also publishes its books in a variety of electronic formats. Some content that appears in print may not be available in electronic formats. For more information about Wiley products, visit our web site at www.wiley.com Library of Congress Cataloging-in-Publication Data:Grebennikov, Andrei RF and microwave transmitter design/Andrei Grebennikov. p. cm. Includes bibliographical references and index.

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“…Beta particles directly interact with the gas, causing avalanche discharges, with current pulses that register as "counts." Under appropriate conditions, electrical discharges such as these can emit broadband radio-frequency radiation in the manner of Marconi transmitters [4]. It has been shown that even microdischarges can be used for wireless signaling [5].…”

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confidence: 99%

A Wireless-Enabled Microdischarge-Based Radiation Detector Utilizing Stacked Electrode Arrays for Enhanced Detection Efficiency

Eun

Gianchandani

2011

J. Microelectromech. Syst.

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This paper describes a wireless gas-based beta/ gamma radiation detector that uses an arrayed electrode structure to demonstrate a scalable path for increasing detection efficiency. The device uses an assembly of stainless-steel electrodes and a glass spacer structure within a TO-5 package. The components are manufactured by commercial micromachining methods, e.g., the electrodes are photochemically etched whereas the spacer structure is ultrasonically machined. Two different fill gases are evaluated near 760 torr-i.e., Ar and P-10. The detector diameter and height are 9 and 9.6 mm, respectively, and its weight is 1.01 g. With a 99-μCi Cs-137 source (which is a beta and gamma emitter), the detector provides > 78 cpm to a hardwired interface at a source-detector distance of 30.5 cm. Receiver operating characteristics evaluated for integration times ranging from 30 to 180 s have shown to improve with longer integration time. The estimated intrinsic detection efficiency (i.e., with the background rate subtracted) is ≈4%, as measured with the biasing arrangement described in this paper. Portable powering modules developed for these detectors are also presented. During operation, gas microdischarges between the electrodes, which are initiated by incident radiation, transmit wideband wireless signals. Wireless signaling has been demonstrated to exhibit fast transient durations on the order of tens of nanoseconds. Wireless-enabled radiation sensors are envisioned for use in rapidly deployable mobile network configurations.[2010-0362]

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Electrical engineering Hall of Fame: Guglielmo Marconi

Cited by 21 publications

References 0 publications

Batteryless and Self-Reconfigurable Multimode RF Network using All-Passive Energy Smart-Sensing

Batteryless and Self-Reconfigurable Multimode RF Network using All-Passive Energy Smart-Sensing

Oscillators

A Wireless-Enabled Microdischarge-Based Radiation Detector Utilizing Stacked Electrode Arrays for Enhanced Detection Efficiency

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