Reconfigurable Wideband Filtering Balun With Tunable Dual-Notched Bands Using CPW-to-Slot Transition and Varactor-Loaded Shorted-Slot
In this paper, a reconfigurable wideband filtering balun with tunable dual-notched bands is proposed, using coplanar waveguide (CPW)-to-slot transitions and varactor-loaded shorted-slots. The wideband filtering balun consists of a triple-mode slot resonator, two CPW-to-slot transitions, and a CPW sh...
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doaj-75f3e98cfae14bab8a0bdaa5d2aafacb2021-03-29T22:19:04ZengIEEEIEEE Access2169-35362019-01-017367613677110.1109/ACCESS.2019.29056838668398Reconfigurable Wideband Filtering Balun With Tunable Dual-Notched Bands Using CPW-to-Slot Transition and Varactor-Loaded Shorted-SlotJie Zhou0Huizhen Jenny Qian1Jiyuan Ren2Xun Luo3https://orcid.org/0000-0002-1318-9418Center for Integrated Circuits, University of Electronic Science and Technology of China, Chengdu, ChinaCenter for Integrated Circuits, University of Electronic Science and Technology of China, Chengdu, ChinaCenter for Integrated Circuits, University of Electronic Science and Technology of China, Chengdu, ChinaCenter for Integrated Circuits, University of Electronic Science and Technology of China, Chengdu, ChinaIn this paper, a reconfigurable wideband filtering balun with tunable dual-notched bands is proposed, using coplanar waveguide (CPW)-to-slot transitions and varactor-loaded shorted-slots. The wideband filtering balun consists of a triple-mode slot resonator, two CPW-to-slot transitions, and a CPW short-stub. Three transmission poles are allocated by the triple-mode slot resonator to achieve the wideband operation. To further improve the amplitude- and phase-imbalance responses, two CPW-to-slot transitions are used. Besides, the CPW short-stub is introduced to enhance the passband selectivity. Then, based on the proposed wideband filtering balun, a reconfigurable balun with tunable dual-notched bands is achieved by introducing two pairs of varactor-loaded shorted-slots. The measured results show that the frequency tuning ranges of the dual-notched bands are 1.28-1.58 GHz (21.6%) and 1.89-2.41 GHz (24.2%) with 15-dB rejection, respectively. The proposed filtering balun shows the advantages of wide fractional bandwidth, high selectivity, low insertion loss, and tunable notched band operation.https://ieeexplore.ieee.org/document/8668398/Baluncoplanar waveguide (CPW)notchreconfigurableslotwideband |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jie Zhou Huizhen Jenny Qian Jiyuan Ren Xun Luo |
spellingShingle |
Jie Zhou Huizhen Jenny Qian Jiyuan Ren Xun Luo Reconfigurable Wideband Filtering Balun With Tunable Dual-Notched Bands Using CPW-to-Slot Transition and Varactor-Loaded Shorted-Slot IEEE Access Balun coplanar waveguide (CPW) notch reconfigurable slot wideband |
author_facet |
Jie Zhou Huizhen Jenny Qian Jiyuan Ren Xun Luo |
author_sort |
Jie Zhou |
title |
Reconfigurable Wideband Filtering Balun With Tunable Dual-Notched Bands Using CPW-to-Slot Transition and Varactor-Loaded Shorted-Slot |
title_short |
Reconfigurable Wideband Filtering Balun With Tunable Dual-Notched Bands Using CPW-to-Slot Transition and Varactor-Loaded Shorted-Slot |
title_full |
Reconfigurable Wideband Filtering Balun With Tunable Dual-Notched Bands Using CPW-to-Slot Transition and Varactor-Loaded Shorted-Slot |
title_fullStr |
Reconfigurable Wideband Filtering Balun With Tunable Dual-Notched Bands Using CPW-to-Slot Transition and Varactor-Loaded Shorted-Slot |
title_full_unstemmed |
Reconfigurable Wideband Filtering Balun With Tunable Dual-Notched Bands Using CPW-to-Slot Transition and Varactor-Loaded Shorted-Slot |
title_sort |
reconfigurable wideband filtering balun with tunable dual-notched bands using cpw-to-slot transition and varactor-loaded shorted-slot |
publisher |
IEEE |
series |
IEEE Access |
issn |
2169-3536 |
publishDate |
2019-01-01 |
description |
In this paper, a reconfigurable wideband filtering balun with tunable dual-notched bands is proposed, using coplanar waveguide (CPW)-to-slot transitions and varactor-loaded shorted-slots. The wideband filtering balun consists of a triple-mode slot resonator, two CPW-to-slot transitions, and a CPW short-stub. Three transmission poles are allocated by the triple-mode slot resonator to achieve the wideband operation. To further improve the amplitude- and phase-imbalance responses, two CPW-to-slot transitions are used. Besides, the CPW short-stub is introduced to enhance the passband selectivity. Then, based on the proposed wideband filtering balun, a reconfigurable balun with tunable dual-notched bands is achieved by introducing two pairs of varactor-loaded shorted-slots. The measured results show that the frequency tuning ranges of the dual-notched bands are 1.28-1.58 GHz (21.6%) and 1.89-2.41 GHz (24.2%) with 15-dB rejection, respectively. The proposed filtering balun shows the advantages of wide fractional bandwidth, high selectivity, low insertion loss, and tunable notched band operation. |
topic |
Balun coplanar waveguide (CPW) notch reconfigurable slot wideband |
url |
https://ieeexplore.ieee.org/document/8668398/ |
work_keys_str_mv |
AT jiezhou reconfigurablewidebandfilteringbalunwithtunabledualnotchedbandsusingcpwtoslottransitionandvaractorloadedshortedslot AT huizhenjennyqian reconfigurablewidebandfilteringbalunwithtunabledualnotchedbandsusingcpwtoslottransitionandvaractorloadedshortedslot AT jiyuanren reconfigurablewidebandfilteringbalunwithtunabledualnotchedbandsusingcpwtoslottransitionandvaractorloadedshortedslot AT xunluo reconfigurablewidebandfilteringbalunwithtunabledualnotchedbandsusingcpwtoslottransitionandvaractorloadedshortedslot |
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1724191856248487936 |