back-to-front ratio
back-to-front ratio
[¦bak tə ¦frənt ′rā·shō] (electromagnetism)
Ratio used in connection with an antenna, metal rectifier, or any device in which signal strength or resistance in one direction is compared with that in the opposite direction.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.