Departmental Papers (ESE)


Attention is invited to the recently discovered inverse Doppler effect which occurs in the near-zone field of an antenna emitting a continuous wave. On approaching the antenna, the received signal is blue-shifted in the far zone and then red-shifted in the near zone; and on receding from the antenna, the received signal is blue-shifted in the near zone and then red-shifted in the far zone. Calculations are presented for the case where the antenna is a simple dipole. It is shown that this effect gives not only the vector velocity of the moving receiver but also its range, i.e., its distance from the antenna.

Document Type

Journal Article

Date of this Version

July 1980


Copyright 1980 IEEE. Reprinted from IEEE Transactions on Antennas and Propagation, Volume AP-28, Issue 4, July 1980, pages 519-522.

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NOTE: At the time of publication, author Nader Engheta was affiliated with the California Institute of Technology. Currently (May 2006), he is a faculty member in the Department of Electrical Engineering at the University of Pennsylvania.



Date Posted: 19 May 2006

This document has been peer reviewed.