Interference Suppression in Radio Receivers by using Frequency Retranslation

Nesimoglu T., Charalampopoulos Z., Beach M. A.

10th Annual IEEE Wireless and Microwave Technology Conference, Florida, United States Of America, 20 - 21 April 2009, pp.240-242 identifier

  • Publication Type: Conference Paper / Full Text
  • City: Florida
  • Country: United States Of America
  • Page Numbers: pp.240-242
  • Middle East Technical University Affiliated: Yes


In the presence of a strong received signal, non-linear radio frequency (RF) front-end components generate distortion products that add interference to a wanted signal. In this paper, an interference suppression technique using frequency retranslation is presented. When the wanted signal level is high, experimental results show a suppression of intermodulation distortion (IMD) by 25 dB. When a small wanted signal is received along with high level interferers, the technique suppresses interferers by 14 dB and in-band interference by more than 18 dB.