Blocking (radio)

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In radio, and wireless communications in general, blocking is a condition in a receiver in which an off-frequency signal (generally further off-frequency than the immediately adjacent channel) causes the signal of interest to be suppressed.[1]

Blocking rejection is the ability of a receiver to tolerate an off-frequency signal and avoid blocking. A good automatic gain control design is part of achieving good blocking rejection.[2]


  1. ^ Qizheng Gu (2005). RF system design of transceivers for wireless communications. Springer. p. 271. ISBN 978-0-387-24161-6.
  2. ^ Ian Hickman (2007). Practical radio-frequency handbook (4th ed.). Newnes. p. 161. ISBN 978-0-7506-8039-4.