Realisation of the circulator concept using differential-input operational amplifiers |
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| Authors: | Keen A.W. Glover Jacqueline L. Harris R.J. |
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| Affiliation: | Bath University of Technology, School of Electrical Engineering, Bristol, UK; |
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| Abstract: | A 3-port unit that satisfies the requirements of the circulator concept is realised with a differential-input operational amplifier. It provides, between two of its ports, a direct measure of reflection coefficient at the third port. One unit may be employed as a hybrid transformer; two or more units may be connected in a ring to form an n-port circulator. |
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