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

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...

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Bibliographic Details
Published in:Electronics letters 2016-10, Vol.52 (21), p.1784-1786
Main Authors: Chen, C.-C, Sim, C.Y.D, Wu, Y.-J
Format: Article
Language:English
Subjects:
back‐to‐back stepped impedance
Couplers
dual‐band unit module
Electronics
frequency 2.45 GHz
frequency 5.8 GHz
frequency 6.8 GHz to 13 GHz
harmonic suppression
Harmonics
Impedance
Microwave technology
Miniature
miniaturised dual‐band rat‐race coupler
Modules
Stepped
synthetic transmission line
Transmission lines
UHF couplers
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Description
Summary: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 1.5λ microstrip ring hybrid, the proposed dual-band rat-race with HS only occupies 13.84% of its area.
ISSN:0013-5194
1350-911X
1350-911X
DOI:10.1049/el.2016.2154