The Ferromagnetic Faraday Effect at Microwave Frequencies and its Applications

1952/01/01 by C. L. Hogan · 4 citations
Physics and Astronomy · Engineering · #Gyrotron and Vacuum Electronics Research #Electromagnetic Effects on Materials #Circulator #Microwave #Gyrator #Faraday effect #Faraday rotator #Faraday cage #Broadband #Reciprocity (cultural anthropology) #Coplanar waveguide #Electrical engineering #Optics #Materials science #Physics #Engineering #Optoelectronics #Telecommunications #Magnetic field

paper · doi:10.1002/j.1538-7305.1952.tb01374.x

openalex publication_date 1952/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/04/04

Abstract

A new microwave circuit element dependent on the Faraday rotation of a polarized wave has been developed. The element violates the reciprocity theorem and, because it shares this property with a gyroscope and because it is dependent on gyromagnetic resonance absorption, it has been termed a microwave gyrator. It is a low-loss broadband device with many applications. Among these are one-way transmission systems, microwave circulators, microwave switches, electrically controlled variable attenuators and modulators.

Citations

• VIII. On the theory of ferromagnetic resonance

Cited by

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• Gyrator [wikipedia]