A Compact Broadband Circularly Polarized Patch Antenna Using Ladder Slots and Grounded Capacitors for MedRadio-Band Applications
This paper presents a compact broadband circularly polarized (CP) implantable antenna at the Medical Device Radio communications Service (MedRadio) band (401-406 MHz). The proposed antenna is designed by utilizing the ladder structure slots along with shorting strategy on the radiating patch, and em...
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10158530/ |
| _version_ | 1797791002227900416 |
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| author | Ducdung Nguyen Danh Manh Nguyen Chulhun Seo |
| author_facet | Ducdung Nguyen Danh Manh Nguyen Chulhun Seo |
| author_sort | Ducdung Nguyen |
| collection | DOAJ |
| description | This paper presents a compact broadband circularly polarized (CP) implantable antenna at the Medical Device Radio communications Service (MedRadio) band (401-406 MHz). The proposed antenna is designed by utilizing the ladder structure slots along with shorting strategy on the radiating patch, and embedding the chip capacitors loading on the ground plane. The proposed antenna’s performances are tested via numerical simulations in a three-layer phantom model. The prototypes are experimentally measured with minced pork as well as in muscle-mimicking gel, and the results show a good agreement. The experiment results indicated that the proposed CP antenna has a small overall size of 9.5 mm <inline-formula> <tex-math notation="LaTeX">$\times9.5$ </tex-math></inline-formula> mm <inline-formula> <tex-math notation="LaTeX">$\times0.64$ </tex-math></inline-formula> mm (57.76 mm<sup>3</sup>) with a broad impedance matching of 25% from 350 MHz to 469 MHz, a realized gain of -31.2 dBi, and produces a wide axial ratio (AR) bandwidth of 30.5% (123 MHz with ranger from 337 MHz to 460 MHz). Moreover, the maximum specific absorption rate (SAR) value also complies with the IEEE standard safety requirements. To the best of our knowledge, the proposed CP antenna is the compactest dimension with wider impedance matching, and greater gain value (without using superstrate) and obtain CP with widest AR bandwidth compared to previously reported works in the MedRadio band. |
| first_indexed | 2024-03-13T02:12:33Z |
| format | Article |
| id | doaj.art-f1f2a9488178484da4b179c90786a770 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-03-13T02:12:33Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-f1f2a9488178484da4b179c90786a7702023-06-30T23:01:07ZengIEEEIEEE Access2169-35362023-01-0111639976400410.1109/ACCESS.2023.328834010158530A Compact Broadband Circularly Polarized Patch Antenna Using Ladder Slots and Grounded Capacitors for MedRadio-Band ApplicationsDucdung Nguyen0https://orcid.org/0000-0001-6125-1792Danh Manh Nguyen1https://orcid.org/0000-0001-7919-6672Chulhun Seo2https://orcid.org/0000-0002-6765-8734Department of Information and Communication Convergence, Soongsil University, Seoul, South KoreaDepartment of Information and Communication Convergence, Soongsil University, Seoul, South KoreaDepartment of Information and Communication Convergence, Soongsil University, Seoul, South KoreaThis paper presents a compact broadband circularly polarized (CP) implantable antenna at the Medical Device Radio communications Service (MedRadio) band (401-406 MHz). The proposed antenna is designed by utilizing the ladder structure slots along with shorting strategy on the radiating patch, and embedding the chip capacitors loading on the ground plane. The proposed antenna’s performances are tested via numerical simulations in a three-layer phantom model. The prototypes are experimentally measured with minced pork as well as in muscle-mimicking gel, and the results show a good agreement. The experiment results indicated that the proposed CP antenna has a small overall size of 9.5 mm <inline-formula> <tex-math notation="LaTeX">$\times9.5$ </tex-math></inline-formula> mm <inline-formula> <tex-math notation="LaTeX">$\times0.64$ </tex-math></inline-formula> mm (57.76 mm<sup>3</sup>) with a broad impedance matching of 25% from 350 MHz to 469 MHz, a realized gain of -31.2 dBi, and produces a wide axial ratio (AR) bandwidth of 30.5% (123 MHz with ranger from 337 MHz to 460 MHz). Moreover, the maximum specific absorption rate (SAR) value also complies with the IEEE standard safety requirements. To the best of our knowledge, the proposed CP antenna is the compactest dimension with wider impedance matching, and greater gain value (without using superstrate) and obtain CP with widest AR bandwidth compared to previously reported works in the MedRadio band.https://ieeexplore.ieee.org/document/10158530/Axial ratiobroadbandcircularly polarizedimplantable antennaMedRadio |
| spellingShingle | Ducdung Nguyen Danh Manh Nguyen Chulhun Seo A Compact Broadband Circularly Polarized Patch Antenna Using Ladder Slots and Grounded Capacitors for MedRadio-Band Applications IEEE Access Axial ratio broadband circularly polarized implantable antenna MedRadio |
| title | A Compact Broadband Circularly Polarized Patch Antenna Using Ladder Slots and Grounded Capacitors for MedRadio-Band Applications |
| title_full | A Compact Broadband Circularly Polarized Patch Antenna Using Ladder Slots and Grounded Capacitors for MedRadio-Band Applications |
| title_fullStr | A Compact Broadband Circularly Polarized Patch Antenna Using Ladder Slots and Grounded Capacitors for MedRadio-Band Applications |
| title_full_unstemmed | A Compact Broadband Circularly Polarized Patch Antenna Using Ladder Slots and Grounded Capacitors for MedRadio-Band Applications |
| title_short | A Compact Broadband Circularly Polarized Patch Antenna Using Ladder Slots and Grounded Capacitors for MedRadio-Band Applications |
| title_sort | compact broadband circularly polarized patch antenna using ladder slots and grounded capacitors for medradio band applications |
| topic | Axial ratio broadband circularly polarized implantable antenna MedRadio |
| url | https://ieeexplore.ieee.org/document/10158530/ |
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