A NOVEL DUAL-LOOP COUPLER FOR ONE-PORT CYLINDRICAL CAVITY PERMITTIVITY MEASUREMENT | Zendy

Hai Zhang | Zendy; Baoqing Zeng | Zendy; Lei Ao | Zendy; Zhaotang Zhang | Zendy

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A NOVEL DUAL-LOOP COUPLER FOR ONE-PORT CYLINDRICAL CAVITY PERMITTIVITY MEASUREMENT

Author(s) -

Hai Zhang,

Baoqing Zeng,

Lei Ao,

Zhaotang Zhang

Publication year - 2012

Publication title -

electromagnetic waves

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 89

eISSN - 1559-8985

pISSN - 1070-4698

DOI - 10.2528/pier12032613

Subject(s) - port (circuit theory) , hybrid coupler , loop (graph theory) , acoustics , permittivity , dual (grammatical number) , optics , physics , materials science , power dividers and directional couplers , electrical engineering , optoelectronics , engineering , dielectric , mathematics , art , combinatorics , literature

The one-port cavity resonator technique based on the S11 parameter measurement for measuring the complex permittivity of dielectric samples has been proposed. A novel dual-loop coupler is developed for avoiding and suppressing the spurious modes in one- port cavity resonator. Through threading the pair of half loop in the opposite direction, the opposite surface currents can be generated and only TE011 mode will be excited. The operating principles of the dual- loop coupler are investigated. This technique has the advantages of the coupling. Equivalent electronic circuit model has been set up. Simulation and experimental results show good agreement.

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