Vol. 158

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2016-11-29

On the Possibility of a Perfect Power Combiner

By Sailing He and Kexin Liu
Progress In Electromagnetics Research, Vol. 158, 1-6, 2017
doi:10.2528/PIER16092302

Abstract

By reductio ad absurdum, we show that a perfect power combiner of single-mode waveguides is impossible for incoherent input waves of the same frequency and same polarization as it is against the law of conservation of energy. The inevitable 3 dB loss of a three-port power combiner is explained physically. An incoherent power combiner of nearly 100% efficiency can be realized only if the two input fields have different wavelengths, have different polarizations, or are of orthogonal modes.

Citation


Sailing He and Kexin Liu, "On the Possibility of a Perfect Power Combiner," Progress In Electromagnetics Research, Vol. 158, 1-6, 2017.
doi:10.2528/PIER16092302
http://jpier.org/PIER/pier.php?paper=16092302

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