Adrianus Teunis (Aad) de Hoop (born 24 December 1927) is a Dutch electrical engineer, mathematician, and physicist, and professor emeritus at

Delft University of Technology Delft University of Technology ( nl, Technische Universiteit Delft), also known as TU Delft, is the oldest and largest Dutch public technical university, located in Delft, Netherlands. As of 2022 it is ranked by QS World University Rankings among ...

. De Hoop's research interests are in the broad area of wavefield modeling in acoustics,

electromagnetics In physics, electromagnetism is an interaction that occurs between particles with electric charge. It is the second-strongest of the four fundamental interactions, after the strong force, and it is the dominant force in the interactions ...

, and

elastodynamics Linear elasticity is a mathematical model of how solid objects deform and become internally stressed due to prescribed loading conditions. It is a simplification of the more general nonlinear theory of elasticity and a branch of continuum mech ...

. Other research includes a method for computing pulsed electromagnetic fields in strongly heterogeneous media with applications to

integrated circuits An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small flat piece (or "chip") of semiconductor material, usually silicon. Transistor count, Large ...

, and a methodology for

time-domain Time domain refers to the analysis of mathematical functions, physical signals or time series of economic or environmental data, with respect to time. In the time domain, the signal or function's value is known for all real numbers, for the cas ...

pulsed-field antenna analysis, design, and optimization for mobile communication and radar applications.

Early life and education

De Hoop was born in

Rotterdam, Netherlands Rotterdam ( , , , lit. ''The Dam on the River Rotte'') is the second largest city and municipality in the Netherlands. It is in the province of South Holland, part of the North Sea mouth of the Rhine–Meuse–Scheldt delta, via the ''"Ne ...

in 1927. He received his MSc in electrical engineering in 1950 and his PhD in technological sciences in 1958, both ''

cum laude Latin honors are a system of Latin phrases used in some colleges and universities to indicate the level of distinction with which an academic degree has been earned. The system is primarily used in the United States. It is also used in some So ...

'' from

. He is the namesake of the Cagniard-de Hoop method, a modification of the Cagniard method.

Career

De Hoop worked as an assistant professor (1950—1957), associate professor (1957—1960), full professor (1960—1996), and Lorentz Chair emeritus professor (1996—present) for Delft University of Technology, his alma mater. He taught electromagnetic theory, applied mathematics, electrical engineering, mathematics, and computer science. In 1970, he founded the Laboratory of Elecromagnetic Research at Delft; this has since developed into a world-class center for

. He spent a year in 1956 as a research assistant at

University of California The University of California (UC) is a public land-grant research university system in the U.S. state of California. The system is composed of the campuses at Berkeley, Davis, Irvine, Los Angeles, Merced, Riverside, San Diego, San Fran ...

's Institute of Geophysics in

Los Angeles Los Angeles ( ; es, Los Ángeles, link=no , ), often referred to by its initials L.A., is the largest city in the state of California and the second most populous city in the United States after New York City, as well as one of the wor ...

in the United States. During his time there, he created a modification of the Cagniard method for calculating impulsive

wave propagation Wave propagation is any of the ways in which waves travel. Single wave propagation can be calculated by 2nd order wave equation ( standing wavefield) or 1st order one-way wave equation. With respect to the direction of the oscillation relative ...

in layered media. This modification was later called the Cagniard-de Hoop method and is now considered a benchmark tool in analyzing

. He spent a year-long sabbatical at the

Philips Natuurkundig Laboratorium The Philips Natuurkundig Laboratorium (English translation: ''Philips Physics Laboratory'') or NatLab was the Dutch section of the Philips research department, which did research for the product divisions of that company. Originally located in th ...

Eindhoven Eindhoven () is a city and municipality in the Netherlands, located in the southern province of North Brabant of which it is its largest. With a population of 238,326 on 1 January 2022,magnetic recording Magnetic storage or magnetic recording is the storage of data on a magnetized medium. Magnetic storage uses different patterns of magnetisation in a magnetizable material to store data and is a form of non-volatile memory. The information is ac ...

theory. Among his PhD students was Jacob Fokkema, later

rector Rector (Latin for the member of a vessel's crew who steers) may refer to: Style or title *Rector (ecclesiastical), a cleric who functions as an administrative leader in some Christian denominations *Rector (academia), a senior official in an edu ...

at Delft 2002—2010. Since 1982, De Hoop has been a regular visiting scientist at the Schlumberger-Doll Research Center, formerly located in

Ridgefield, Connecticut Ridgefield is a town in Fairfield County, Connecticut, United States. Situated in the foothills of the Berkshire Mountains, the 300-year-old community had a population of 25,033 at the 2020 census. The town center, which was formerly a borough, ...

and now in

Cambridge, Massachusetts Cambridge ( ) is a city in Middlesex County, Massachusetts, United States. As part of the Greater Boston, Boston metropolitan area, the cities population of the 2020 United States Census, 2020 U.S. census was 118,403, making it the fourth most ...

in the United States. Here, he contributes to research on geophysical applications of acoustic,

electromagnetic In physics, electromagnetism is an interaction that occurs between particles with electric charge. It is the second-strongest of the four fundamental interactions, after the strong force, and it is the dominant force in the interactions of a ...

, and elastodynamic waves. Grants from the Stichting Fund for Science, Technology and Research, founded by

Schlumberger Schlumberger Limited (), doing business as SLB, is an oilfield services company. Schlumberger has four principal executive offices located in Paris, Houston, London, and The Hague. Schlumberger is the world's largest offshore drilling comp ...

, supported his research in Delft. In 1995, he published the ''Handbook of Radiation and Scattering of Waves''.

Honours

* 1981: Honorary doctorate in applied sciences -

University of Ghent Ghent University ( nl, Universiteit Gent, abbreviated as UGent) is a public research university located in Ghent, Belgium. Established before the state of Belgium itself, the university was founded by the Dutch King William I in 1817, when th ...

* 1989: Research Medal - Royal Institute of Engineers, Netherlands * 1989: Membership -

Royal Netherlands Academy of Arts and Sciences The Royal Netherlands Academy of Arts and Sciences ( nl, Koninklijke Nederlandse Akademie van Wetenschappen, abbreviated: KNAW) is an organization dedicated to the advancement of science and literature in the Netherlands. The academy is housed ...

* 2001: Heinrich Hertz Medal -

Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operat ...

* 2002:

Balthasar van der Pol Balthasar van der Pol (27 January 1889 – 6 October 1959) was a Dutch physicist. Life and work Van der Pol began his studies of physics in Utrecht in 1911. J. A. Fleming offered van der Pol the use of the Pender Electrical Laboratory at ...

Gold Research Medal -

International Scientific Radio Union The International Union of Radio Science ( abbreviated ''URSI'', after its French name, french: link=no, Union radio-scientifique internationale) is one of 26 international scientific unions affiliated to the International Council for Science ( ...

* 2003: Knighthood -

Order of the Netherlands Lion The Order of the Netherlands Lion, also known as the Order of the Lion of the Netherlands ( nl, De Orde van de Nederlandse Leeuw, french: L'Ordre du Lion Néerlandais) is a Dutch order of chivalry founded by King William I of the Netherlands on ...

* 2008: Honorary doctorate in mathematical, physical, and engineering sciences - Växjö University * Foreign member -

Royal Flemish Academy of Belgium for Science and the Arts The Royal Flemish Academy of Belgium for Science and the Arts ( nl, Koninklijke Vlaamse Academie van België voor Wetenschappen en Kunsten, or KVAB) is one of an independent learned society of science and arts of the Flemish Community in Belgium. ...

Personal life

He performs choral music with the Rotterdam Philharmonic Choir and plays piano in his spare time. Prior to suffering a

cerebral infarction A cerebral infarction is the pathologic process that results in an area of necrotic tissue in the brain (cerebral infarct). It is caused by disrupted blood supply (ischemia) and restricted oxygen supply (hypoxia), most commonly due to thromboemb ...

in 2012 that left him paralyzed on the left side of his body, he cycled daily from his home in

Bergschenhoek 270px, Town sign Bergschenhoek () is a town and former municipality in the municipality of Lansingerland, in the province of South Holland, Netherlands. It is situated roughly 10 km to the north of Rotterdam. The town had a population of 18 ...

, where he lives with wife Annelies, to Delft.

References

{{DEFAULTSORT:Hoop, Adrianus de 1927 births Living people Delft University of Technology alumni Academic staff of the Delft University of Technology Dutch electrical engineers Engineers from Rotterdam Knights of the Order of the Netherlands Lion Members of the Royal Flemish Academy of Belgium for Science and the Arts Members of the Royal Netherlands Academy of Arts and Sciences Microwave engineers Electrical engineering academics