Wideband Circularly Polarized Filtering Hybrid Antenna
In this paper, a wideband circularly polarized (CP) filtering hybrid antenna is presented. The liquid dielectric resonator (DR) is excited by a microstrip-coupled cross-slot to generate CP radiation. Four inverted L-shaped strips are loaded on the ground plane to introduce an additional CP resonant...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/21/11018 |
| _version_ | 1797469213501161472 |
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| author | Yahui Qian Shumin Xie |
| author_facet | Yahui Qian Shumin Xie |
| author_sort | Yahui Qian |
| collection | DOAJ |
| description | In this paper, a wideband circularly polarized (CP) filtering hybrid antenna is presented. The liquid dielectric resonator (DR) is excited by a microstrip-coupled cross-slot to generate CP radiation. Four inverted L-shaped strips are loaded on the ground plane to introduce an additional CP resonant point, then two adjacent axial ratio (AR) minima are combined to improve the bandwidth of the single-feed CP antenna. By etching a U-shaped slot and loading a C-shaped microstrip stub on the microstrip line, two tunable radiation nulls near the edges of the working band can be obtained without any extra filtering circuits. To verify the design, a filtering CP antenna is designed, fabricated, and tested. Measured results show that the antenna provides wider 3-dB AR and an impedance bandwidth of 38.8% from 1.36 to 2.02 GHz and 39.4% from 1.37 to 2.04 GHz, respectively. The realized gain of the proposed antenna is stable at about 7.8 dBi within the whole working band. A reasonable agreement between measured and simulated results is observed. |
| first_indexed | 2024-03-09T19:18:11Z |
| format | Article |
| id | doaj.art-7ee932fbac53476a80cce9b63a14250c |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T19:18:11Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-7ee932fbac53476a80cce9b63a14250c2023-11-24T03:36:46ZengMDPI AGApplied Sciences2076-34172022-10-0112211101810.3390/app122111018Wideband Circularly Polarized Filtering Hybrid AntennaYahui Qian0Shumin Xie1School of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, ChinaSchool of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, ChinaIn this paper, a wideband circularly polarized (CP) filtering hybrid antenna is presented. The liquid dielectric resonator (DR) is excited by a microstrip-coupled cross-slot to generate CP radiation. Four inverted L-shaped strips are loaded on the ground plane to introduce an additional CP resonant point, then two adjacent axial ratio (AR) minima are combined to improve the bandwidth of the single-feed CP antenna. By etching a U-shaped slot and loading a C-shaped microstrip stub on the microstrip line, two tunable radiation nulls near the edges of the working band can be obtained without any extra filtering circuits. To verify the design, a filtering CP antenna is designed, fabricated, and tested. Measured results show that the antenna provides wider 3-dB AR and an impedance bandwidth of 38.8% from 1.36 to 2.02 GHz and 39.4% from 1.37 to 2.04 GHz, respectively. The realized gain of the proposed antenna is stable at about 7.8 dBi within the whole working band. A reasonable agreement between measured and simulated results is observed.https://www.mdpi.com/2076-3417/12/21/11018circular polarizationfiltering antennahybrid antennaliquid antennawideband |
| spellingShingle | Yahui Qian Shumin Xie Wideband Circularly Polarized Filtering Hybrid Antenna Applied Sciences circular polarization filtering antenna hybrid antenna liquid antenna wideband |
| title | Wideband Circularly Polarized Filtering Hybrid Antenna |
| title_full | Wideband Circularly Polarized Filtering Hybrid Antenna |
| title_fullStr | Wideband Circularly Polarized Filtering Hybrid Antenna |
| title_full_unstemmed | Wideband Circularly Polarized Filtering Hybrid Antenna |
| title_short | Wideband Circularly Polarized Filtering Hybrid Antenna |
| title_sort | wideband circularly polarized filtering hybrid antenna |
| topic | circular polarization filtering antenna hybrid antenna liquid antenna wideband |
| url | https://www.mdpi.com/2076-3417/12/21/11018 |
| work_keys_str_mv | AT yahuiqian widebandcircularlypolarizedfilteringhybridantenna AT shuminxie widebandcircularlypolarizedfilteringhybridantenna |