A PASSIVE METHOD OF IMPROVING COMMON-MODE REJECTION,
Abstract
Theory and experimental results are given which show that considerable common-mode rejection can be achieved with a passive magnetic device. Equations are developed which give the characteristics of differential and common-mode input impedances. Rejection ratios as high as 80 dB were obtained experimentally. For frequencies extending from 10 Hz to 10 MHz, the common-mode rejection was in excess of 53 dB. Simultaneously, differential-mode signals of approximately the same frequency range were passed without distortion and with less than 1/2-dB attenuation. Rectangular pulses of 20-nsec rise time were also passed in the differential mode without noticeable distortion. The given results can be improved substantially in specific applications.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1967
- Accession Number
- AD0652877
Entities
People
- Karl H. Krey
Organizations
- Harry Diamond Laboratories