Compensation for missing array elements by direct beam synthesis

Emad S. Ebbini, Matthew O'Donnell

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


We describe a theoretical formulation allowing optimization of phased-array beam patterns in the presence of missing elements. The approach specifies the desired beam pattern at a set of control points (directions) in the focal plane covering both the main beam and sidelobes. Complex element weights (for either transmit or receive) are found as the vector with minimum norm (i.e., minimum energy) minimizing the square error between the realized and the specified beam patterns at the control points. The method lends itself to a robust efficient numerical calculation permitting on-line implementation.

Original languageEnglish (US)
Article number234242
Pages (from-to)645-649
Number of pages5
JournalProceedings - IEEE Ultrasonics Symposium
StatePublished - 1991
Externally publishedYes
Event1991 IEEE Ultrasonics Symposium. ULTSYM 1991 - Orlando, United States
Duration: Dec 8 1991Dec 11 1991

Bibliographical note

Funding Information:
Acknowledgement Simulations presented in this paper were performed on Cray-YMP at the University of Illinois under grant number ECS870001 from the National Center for Supercomputing Applications (NCSA).

Publisher Copyright:
© 1991 IEEE.


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