Signal-Processing Applications of Charge-Coupled Devices

Abstract

The charge-coupled device, first disclosed in the Bell System Technical Journal in 1970, is an analogue, sampled-data delay line and has made significant impact in the field of signal processing. In this review paper, a brief introduction to the device is followed by the considerations which make it so important and convenient in signal-processing applications. A number of specific applications are outlined and their advantages and limitations are briefly discussed. In particular, the effect of the most important limiting factor, namely, charge-transfer inefficiency is discussed in some detail and several methods of compensation are outlined. The paper concludes with an indication of the work being done at IIT Delhi on the various aspects relating to theory, fabrication and signal-processing applications of the device.

Indexing Terms:

• Charge-Coupled Devices
• Signal Processing
• Charge-Transfer Inefficiency
• Transversal Filters
• Spectral Analysis

Additional information

Notes on contributors

S. C. Dutta Roy

DUTTA ROY, S C (Prof.): Born in Mymensingh, now in Bangla Desh on November 1, 1937. He received the BSc (Hons) degree in physics, MSc (Tech) degree in Radio Physics and Electronics and the DPhil degree for research on network theory and solidstate circuits, all from the Calcutta respectively. He has worked with the Geological Survey of India, the River Research Institute, West Bengal; the University of Kalyani, West Bengal; and the University of Minnesota, USA before joining the IIT, Delhi in September 1968 as an Associate Professor of Electrical Engineering. He became a Professor in January 1970 and was the Head of the Department during 1970–73. During 1973–74, he was a visiting Professor at the University of Leeds, England. He is presently a Visiting Professor, Department of Eelectrical Engineering, Iowa State Univ., USA.

His current research interests include active, passive, distributed and digital networks and filters and solid-state devices and circuits. He is a Senior Member of the IEEE and is member of the Editorial Board, International Journal of Circuit Theory and Applications. He was awarded the 1973 Meghnad Saha Memorial Award by the IETE. He is the co-editor of the book ‘Advances in Systems Engineering’ published by Tata McGraw Hill.

A. B. Bhattacharyya

BHATTACHARYYA, A B (Prof.: Born in 1937, got MSc degree in) Physics in 1958 and PhD (Communication) in 1961 from Banaras Hindu University. Subsequently he served as a lecturer in the same university till 1967 in the Electrical Engg. Department. He was appointed as Assistant Professor in the Physics Department and as Professor in the Electrical Engineering Department in the year 1967 and 1973 respectively at IIT Delhi. Presently he is the Head of Centre for Applied Research in Electronics at IIT Delhi.

He is responsible for organising and co-ordinating the micro-electronics laboratory at IIT Delhi. His interest is in the area of micro-electronic technology, silicon devices, surface acoustic waves and MOS-based devices.

J. M. Vasi

VASI, J (Dr.): Received his BTech degree in Electrical Engineering from the Indian Institute of Technology, Bombay, in 1969, and his PhD from the Johns Hopkins University in 1973. After one year as Visiting Assistant Professor at Johns Hopkins University, he joined Indian Institute of Technology, Delhi where he is currently an Assistant Professor.

V. G. Das

DAS, V G: Born at Kakinada (AP) on 12th August, 1943. Received the BSc (Engg.) degree with Honours from Agra University in 1965 and the MTech degree from IIT Kanpur with 1st division in 1970, both in Electrical Engineering. He joined the Department of Electrical Engineering, D.E.I. Engineering College, Dayalbagh, Agra, as Lecturer in August 1965, where he is now Reader. He has worked on the compensation of transfer inefficient of chargetransfer devices at IIT Delhi as full time research scholar in the period January, 1976 to July, 1978.

L. Shankar

SHANKAR, L: Born in Madras in 1965. Received BSc physics degree from Madras University and later MSc Electronics from Osmania University, Hyderabad. Joined the Indian Institute of Technology, Delhi in October 1976 and is currently working for his PhD. In March 1978 he successfully fabricated India's first charge-coupled device. His current interests include the modelling and fabrication of charge-coupled devices and their various signal-processing aspects.

Navin Kapur

KAPUR, NAVIN: Did his BTech in Electrical Engineering from IIT, Delhi in 1971, and then joined Continental Device India Ltd., where he worked in the Quality Control and Device Processing Departments. Since April 1977 he is with the Centre for Applied Research in Electronics, IIT, Delhi, and is working for his PhD in the field of filter design using charge-transfer devices.