IEEE Trans. Microwave Theory Techn.

1977

DOI: 10.1109/tmtt.1977.1129213

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General Field Theory Treatment of E-Plane Waveguide Junction Circulators--Part II: Two-Disk Ferrite Configuration

M.E. El-Shandwily

¹

,

²

,

Esmat A. Abdallah

³

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Cited by 18 publications

References 12 publications

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On volume modes and surface modes in partial‐height ferrite circulators and their bandwidth expansion at millemeter wave band

¹

,

²

1988

Micro & Optical Tech Letters

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The electromagnetic field modes in partial‐height ferrite circulators are classified into two categories: volume modes and surface modes. Their properties are described in detail. The method of expanding the circulator bandwidth at the millimeter wave band is investigated. A set of theoretical results are calculated for a n = 2 Chebyshev response. A Ka‐band circulator is designed. The measured minimum isolation is 15 dB over a 9‐GHz bandwidth. The experimental result and theoretical prediction are similar.

On volume modes and surface modes in partial‐height ferrite circulators and their bandwidth expansion at millemeter wave band

¹

,

²

1988

Micro & Optical Tech Letters

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The electromagnetic field modes in partial‐height ferrite circulators are classified into two categories: volume modes and surface modes. Their properties are described in detail. The method of expanding the circulator bandwidth at the millimeter wave band is investigated. A set of theoretical results are calculated for a n = 2 Chebyshev response. A Ka‐band circulator is designed. The measured minimum isolation is 15 dB over a 9‐GHz bandwidth. The experimental result and theoretical prediction are similar.

Theoretical Analysis and Design of Wide Band H‐Plane Waveguide Y‐Junction Circulator

Xu¹,

1989

Micro & Optical Tech Letters

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In this paper a rigorous theoretical analysis of H‐plane waveguide Y‐junction circulators with partial‐height ferrite post and metallic matching disk is presented. By using the field matching method, various modes in the ferrite post are calculated identified and discused in detail. A series of curves, data, and conclusions which are very useful for the design of practical circulators are obtained. Experimental results are in good agreement with theoretical results.

Theoretical calculation of insertion losses of ferrite Y‐junction circulators

Xu¹,

Miao²,

1989

Micro & Optical Tech Letters

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