A Compact Four-Port Coplanar Antenna Based on an Excitation Switching Reconfigurable Mechanism for Cognitive Radio Applications
In this paper, we propose a compact four-port coplanar antenna for cognitive radio applications. The proposed antenna consists of a coplanar waveguide (CPW)-fed ultra-wideband (UWB) antenna and three inner rectangular loop antennas. The dimensions of the proposed antenna are 42 mm × 50 mm &...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-08-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/9/15/3157 |
| _version_ | 1811225307681652736 |
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| author | Yeonjeong O Yunnan Jin Jaehoon Choi |
| author_facet | Yeonjeong O Yunnan Jin Jaehoon Choi |
| author_sort | Yeonjeong O |
| collection | DOAJ |
| description | In this paper, we propose a compact four-port coplanar antenna for cognitive radio applications. The proposed antenna consists of a coplanar waveguide (CPW)-fed ultra-wideband (UWB) antenna and three inner rectangular loop antennas. The dimensions of the proposed antenna are 42 mm × 50 mm × 0.8 mm. The UWB antenna is used for spectrum sensing and fully covers the UWB spectrum of 3.1−10.6 GHz. The three loop antennas cover the UWB frequency band partially for communication purposes. The first loop antenna for the low frequency range operates from 2.96 GHz to 5.38 GHz. The second loop antenna is in charge of the mid band from 5.31 GHz to 8.62 GHz. The third antenna operates from 8.48 GHz to 11.02 GHz, which is the high-frequency range. A high isolation level (greater than 17.3 dB) is realized among the UWB antenna and three loop antennas without applying any additional decoupling structures. The realized gains of the UWB antenna and three loop antennas are greater than 2.7 dBi and 1.38 dBi, respectively. |
| first_indexed | 2024-04-12T09:04:52Z |
| format | Article |
| id | doaj.art-410c05667b0f455aace8aeac25ef4e42 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-04-12T09:04:52Z |
| publishDate | 2019-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-410c05667b0f455aace8aeac25ef4e422022-12-22T03:39:08ZengMDPI AGApplied Sciences2076-34172019-08-01915315710.3390/app9153157app9153157A Compact Four-Port Coplanar Antenna Based on an Excitation Switching Reconfigurable Mechanism for Cognitive Radio ApplicationsYeonjeong O0Yunnan Jin1Jaehoon Choi2Department of Electronics and Computer Engineering, Hanyang University, Seoul 133-791, KoreaDepartment of Electronics and Computer Engineering, Hanyang University, Seoul 133-791, KoreaDepartment of Electronics and Computer Engineering, Hanyang University, Seoul 133-791, KoreaIn this paper, we propose a compact four-port coplanar antenna for cognitive radio applications. The proposed antenna consists of a coplanar waveguide (CPW)-fed ultra-wideband (UWB) antenna and three inner rectangular loop antennas. The dimensions of the proposed antenna are 42 mm × 50 mm × 0.8 mm. The UWB antenna is used for spectrum sensing and fully covers the UWB spectrum of 3.1−10.6 GHz. The three loop antennas cover the UWB frequency band partially for communication purposes. The first loop antenna for the low frequency range operates from 2.96 GHz to 5.38 GHz. The second loop antenna is in charge of the mid band from 5.31 GHz to 8.62 GHz. The third antenna operates from 8.48 GHz to 11.02 GHz, which is the high-frequency range. A high isolation level (greater than 17.3 dB) is realized among the UWB antenna and three loop antennas without applying any additional decoupling structures. The realized gains of the UWB antenna and three loop antennas are greater than 2.7 dBi and 1.38 dBi, respectively.https://www.mdpi.com/2076-3417/9/15/3157cognitive radio (CR)ultra-wideband (UWB)narrowband (NB) antennaisolationspectrum sensingcommunication |
| spellingShingle | Yeonjeong O Yunnan Jin Jaehoon Choi A Compact Four-Port Coplanar Antenna Based on an Excitation Switching Reconfigurable Mechanism for Cognitive Radio Applications Applied Sciences cognitive radio (CR) ultra-wideband (UWB) narrowband (NB) antenna isolation spectrum sensing communication |
| title | A Compact Four-Port Coplanar Antenna Based on an Excitation Switching Reconfigurable Mechanism for Cognitive Radio Applications |
| title_full | A Compact Four-Port Coplanar Antenna Based on an Excitation Switching Reconfigurable Mechanism for Cognitive Radio Applications |
| title_fullStr | A Compact Four-Port Coplanar Antenna Based on an Excitation Switching Reconfigurable Mechanism for Cognitive Radio Applications |
| title_full_unstemmed | A Compact Four-Port Coplanar Antenna Based on an Excitation Switching Reconfigurable Mechanism for Cognitive Radio Applications |
| title_short | A Compact Four-Port Coplanar Antenna Based on an Excitation Switching Reconfigurable Mechanism for Cognitive Radio Applications |
| title_sort | compact four port coplanar antenna based on an excitation switching reconfigurable mechanism for cognitive radio applications |
| topic | cognitive radio (CR) ultra-wideband (UWB) narrowband (NB) antenna isolation spectrum sensing communication |
| url | https://www.mdpi.com/2076-3417/9/15/3157 |
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