Design of Compact Planar Diplexer Based on Novel Spiral-Based Resonators

A miniaturized planar diplexer utilizing the novel spiral-based resonators is proposed. The given cell which is initially proposed in this article is composed of two separated rectangular spirals which are asymmetrical to each other and thus, it is called as ‘asymmetrical separated spirals resonator...

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Main Authors: Ke Lu, Guang-Ming Wang, Hai-yang Xu, Xiong Yin
Format: Article
Language:English
Published: Spolecnost pro radioelektronicke inzenyrstvi 2012-04-01
Series:Radioengineering
Subjects:
Online Access:http://www.radioeng.cz/fulltexts/2012/12_01_0528_0532.pdf
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author Ke Lu
Guang-Ming Wang
Hai-yang Xu
Xiong Yin
author_facet Ke Lu
Guang-Ming Wang
Hai-yang Xu
Xiong Yin
author_sort Ke Lu
collection DOAJ
description A miniaturized planar diplexer utilizing the novel spiral-based resonators is proposed. The given cell which is initially proposed in this article is composed of two separated rectangular spirals which are asymmetrical to each other and thus, it is called as ‘asymmetrical separated spirals resonator’ (ASSR). ASSR has more superior transmission property than the previous prototype and extremely compact dimension is also achieved. It is demonstrated that ASSR can exhibit bandpass performance with high frequency selectivity and good transmission property within the relatively low frequency band. Based on the given characteristic, one planar diplexer composed of T-junction and two ASSRs is synthesized and the fabricated prototype with compact dimension is achieved, thanks to ASSRs explored. Simultaneously, the transversal dimension of each channel is extremely compact because ASSRs are completely embedded in the feed lines. Both the simulated and measured results indicate that satisfactory impedance matching and high isolation between two channels are achieved. Furthermore, the proposed diplexer is uniplanar and no defected ground structure is introduced.
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spelling doaj.art-3c86f512c0b445a7bc234679eb3191f82022-12-22T03:30:25ZengSpolecnost pro radioelektronicke inzenyrstviRadioengineering1210-25122012-04-01211528532Design of Compact Planar Diplexer Based on Novel Spiral-Based ResonatorsKe LuGuang-Ming WangHai-yang XuXiong YinA miniaturized planar diplexer utilizing the novel spiral-based resonators is proposed. The given cell which is initially proposed in this article is composed of two separated rectangular spirals which are asymmetrical to each other and thus, it is called as ‘asymmetrical separated spirals resonator’ (ASSR). ASSR has more superior transmission property than the previous prototype and extremely compact dimension is also achieved. It is demonstrated that ASSR can exhibit bandpass performance with high frequency selectivity and good transmission property within the relatively low frequency band. Based on the given characteristic, one planar diplexer composed of T-junction and two ASSRs is synthesized and the fabricated prototype with compact dimension is achieved, thanks to ASSRs explored. Simultaneously, the transversal dimension of each channel is extremely compact because ASSRs are completely embedded in the feed lines. Both the simulated and measured results indicate that satisfactory impedance matching and high isolation between two channels are achieved. Furthermore, the proposed diplexer is uniplanar and no defected ground structure is introduced.www.radioeng.cz/fulltexts/2012/12_01_0528_0532.pdfMiniaturized planar diplexerspiral-based resonatorhigh frequency selectivity
spellingShingle Ke Lu
Guang-Ming Wang
Hai-yang Xu
Xiong Yin
Design of Compact Planar Diplexer Based on Novel Spiral-Based Resonators
Radioengineering
Miniaturized planar diplexer
spiral-based resonator
high frequency selectivity
title Design of Compact Planar Diplexer Based on Novel Spiral-Based Resonators
title_full Design of Compact Planar Diplexer Based on Novel Spiral-Based Resonators
title_fullStr Design of Compact Planar Diplexer Based on Novel Spiral-Based Resonators
title_full_unstemmed Design of Compact Planar Diplexer Based on Novel Spiral-Based Resonators
title_short Design of Compact Planar Diplexer Based on Novel Spiral-Based Resonators
title_sort design of compact planar diplexer based on novel spiral based resonators
topic Miniaturized planar diplexer
spiral-based resonator
high frequency selectivity
url http://www.radioeng.cz/fulltexts/2012/12_01_0528_0532.pdf
work_keys_str_mv AT kelu designofcompactplanardiplexerbasedonnovelspiralbasedresonators
AT guangmingwang designofcompactplanardiplexerbasedonnovelspiralbasedresonators
AT haiyangxu designofcompactplanardiplexerbasedonnovelspiralbasedresonators
AT xiongyin designofcompactplanardiplexerbasedonnovelspiralbasedresonators