Sean Scanlan MRIA,

IEEE The Institute of Electrical and Electronics Engineers (IEEE) is an American 501(c)(3) organization, 501(c)(3) public charity professional organization for electrical engineering, electronics engineering, and other related disciplines. The IEEE ...

Life Fellow (also John Oliver Scanlan; 1937 – 2 May 2017) was an Irish circuit theorist and electronic engineering professor.

Biography

Scanlan studied

electrical engineering Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems that use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the l ...

University College Dublin University College Dublin (), commonly referred to as UCD, is a public research university in Dublin, Ireland, and a collegiate university, member institution of the National University of Ireland. With 38,417 students, it is Ireland's largest ...

(UCD) and received the

Bachelor of Engineering A Bachelor of Engineering (BEng) or a Bachelor of Science in Engineering (BSE) is an undergraduate academic degree awarded to a college graduate majoring in an engineering discipline at a higher education institution. In the United Kingdom, a Ba ...

degree in 1959. He then worked at

Mullard Mullard Limited was a British manufacturer of electronics, electronic components. The Mullard Radio Valve Co. Ltd. of Southfields, London, was founded in 1920 by Captain Stanley R. Mullard, who had previously designed thermionic valves (US ...

, an industrial research laboratory in

Redhill, Surrey Redhill () is a town status in the United Kingdom, town in the borough of Reigate and Banstead within the county of Surrey, England. The town, which adjoins the town of Reigate to the west, is due south of London Borough of Croydon, Croydon in ...

, and continued his studies at the

University of Leeds The University of Leeds is a public research university in Leeds, West Yorkshire, England. It was established in 1874 as the Yorkshire College of Science. In 1884, it merged with the Leeds School of Medicine (established 1831) and was renamed Y ...

, where he received a PhD in 1966. He became the Chair of Electronic Engineering at Leeds two years later. In 1972, Scanlan earned a

Doctor of Science A Doctor of Science (; most commonly abbreviated DSc or ScD) is a science doctorate awarded in a number of countries throughout the world. Africa Algeria and Morocco In Algeria, Morocco, Libya and Tunisia, all universities accredited by the s ...

from the

National University of Ireland The National University of Ireland (NUI) () is a federal university system of ''constituent universities'' (previously called '' constituent colleges'') and ''recognised colleges'' set up under the Irish Universities Act 1908, and signifi ...

. From 1973 to 2002, he was the Chair of Electronic Engineering at UCD and was the first person in that role. Scanlan's areas of research included electronic circuit and system design, digital circuits and computing,

signal processing Signal processing is an electrical engineering subfield that focuses on analyzing, modifying and synthesizing ''signals'', such as audio signal processing, sound, image processing, images, Scalar potential, potential fields, Seismic tomograph ...

digital filter In signal processing, a digital filter is a system that performs mathematical operations on a Sampling (signal processing), sampled, discrete-time signal to reduce or enhance certain aspects of that signal. This is in contrast to the other ma ...

s and switched-capacitor filters. He also made contributions to the theory of high frequency transistor

amplifiers An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the magnitude of a signal (a time-varying voltage or current). It is a two-port electronic circuit that uses electric power from a power suppl ...

and

oscillators Oscillation is the repetitive or periodic variation, typically in time, of some measure about a central value (often a point of equilibrium) or between two or more different states. Familiar examples of oscillation include a swinging pendulum ...

, as well as

tunnel diode A tunnel diode or Esaki diode is a type of semiconductor diode that has effectively " negative resistance" due to the quantum mechanical effect called tunneling. It was invented in August 1957 by Leo Esaki and Yuriko Kurose when working ...

amplifiers. His later work included research into lumped networks, and distributed-element circuit. Scanlan was president of the

Royal Irish Academy The Royal Irish Academy (RIA; ), based in Dublin, is an academic body that promotes study in the natural sciences, arts, literature, and social sciences. It is Ireland's premier List of Irish learned societies, learned society and one of its le ...

(RIA) from 1993 to 1996 and a life fellow of the

Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers (IEEE) is an American 501(c)(3) public charity professional organization for electrical engineering, electronics engineering, and other related disciplines. The IEEE has a corporate office ...

(IEEE). He was awarded an RIA Gold Medal and the Golden Jubilee Medal of the IEEE Circuits and Systems Society.

References

{{DEFAULTSORT:Scanlan, Sean 20th-century Irish engineers 20th-century Irish scientists 1937 births Alumni of University College Dublin Alumni of the University of Leeds Alumni of the National University of Ireland 2017 deaths Engineers from County Dublin