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Analysis of the H-Plane T-Junction Millimeter Wave Waveguide Circulator with a Ferrite Sphere

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Abstract

This paper presents an approximate but efficient field treatment of the new easy-to-fabricate ferrite sphere based H-plane waveguide circulator for potentially low-cost millimeter wave communication systems. A new three-dimension modeling strategy using a self-inconsistent mixed coordinates based mode matching technique is developed, i.e. the solutions of the Helmholz wave equations in the ferrite sphere and in the surrounding areas are deduced in the form of infinite summation of spherical, cylindrical and general Cartesian modes respectively. The point matching method is then used on the interface to numerically obtain the coefficients of different orders basis functions of the field. Therefore, the field distributions as well as the characteristics of the circulator are numerically calculated and the good agreement is observed between the numerical results and the measured data.

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Authors and Affiliations

  1. School of Electronic Engineering and Photoelectrical Technology, Nanjing University of Science and Technology, Nanjing, 210094, People's Republic of China

    Chen Ru Shan

  2. Department of Electronic Engineering, City University of Hong Kong, Hong Kong, People's Republic of China

    K. F. Tsang & Edward K. N. Yung

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  1. Chen Ru Shan
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  2. K. F. Tsang
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  3. Edward K. N. Yung
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Shan, C.R., Tsang, K.F. & Yung, E.K.N. Analysis of the H-Plane T-Junction Millimeter Wave Waveguide Circulator with a Ferrite Sphere. International Journal of Infrared and Millimeter Waves 21, 1703–1722 (2000). https://doi.org/10.1023/A:1006628113085

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