Image reject mixers are interesting circuits used in RF/wireless receivers to avoid the problems associated with the image frequency. ( To read about the image frequency please search for “image frequency” in this blog). A recent white paper from Signal Processing Group Inc, examines the operation of the image reject mixer and provides a fairly detailed explanation of the operation for interested readers. Please visit our website at http://www.signalpro.biz and click on the free reports link for a detailed description of the image reject mixer.