Miniaturised dual‐band rat‐race coupler with harmonic suppression using synthetic transmission line | Zendy

Chen C.C. | Zendy; Sim C.Y.D. | Zendy; Wu Y.J. | Zendy

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Miniaturised dual‐band rat‐race coupler with harmonic suppression using synthetic transmission line

Author(s) -

Chen C.C.,

Sim C.Y.D.,

Wu Y.J.

Publication year - 2016

Publication title -

electronics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.375

H-Index - 146

eISSN - 1350-911X

pISSN - 0013-5194

DOI - 10.1049/el.2016.2154

Subject(s) - rat race coupler , microstrip , multi band device , stub (electronics) , hybrid coupler , electric power transmission , transmission line , electrical impedance , electrical engineering , physics , electronic engineering , engineering , power dividers and directional couplers , antenna (radio)

A dual‐band 90° unit module with harmonic suppression (HS) is proposed. This unit module consists of a pair of back‐to‐back stepped impedance sections and an open stub. The unit module is realised by synthetic transmission lines, and it is successfully implemented into a novel miniature dual‐band (2.45/5.8‐GHz) rat‐race coupler with HS (suppression level ≥16 dB, 6.8–13 GHz). Compared with traditional 1.5 λ microstrip ring hybrid, the proposed dual‐band rat‐race with HS only occupies 13.84% of its area.

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