Ultra-Wideband Coplanar Vivaldi Antenna Array With Dielectric Patch Antenna for Grating Lobes Suppression
This paper details a new approach for enhancing the radiation characteristics of a coplanar Vivaldi antenna (CVA) array. First, the inter-element mutual coupling is reduced by introducing slots in the conventional CVA array. Then, a low-profile dielectric patch antenna (DPA) is situated between the...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2022-01-01
|
| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9775815/ |
| _version_ | 1811255470199930880 |
|---|---|
| author | Feras Abushakra Nathan Jeong Abhishek K. Awasthi Shriniwas Kolpuke Christopher Simpson Omid Reyhanigalangashi Deepak N. Elluru Aabhash Bhandari Drew Taylor S. Prasad Gogineni |
| author_facet | Feras Abushakra Nathan Jeong Abhishek K. Awasthi Shriniwas Kolpuke Christopher Simpson Omid Reyhanigalangashi Deepak N. Elluru Aabhash Bhandari Drew Taylor S. Prasad Gogineni |
| author_sort | Feras Abushakra |
| collection | DOAJ |
| description | This paper details a new approach for enhancing the radiation characteristics of a coplanar Vivaldi antenna (CVA) array. First, the inter-element mutual coupling is reduced by introducing slots in the conventional CVA array. Then, a low-profile dielectric patch antenna (DPA) is situated between the CVA flares when it acts as a traveling wave radiator at the higher frequency band. The DPA is excited by the loop current at the radiation part of the CVA, and a set of TE modes with omnidirectional radiation patterns are excited. This combination enhances the directivity in the broadside direction of the CVA and suppresses the grating lobes by as much as 10 dB. The 4 <inline-formula> <tex-math notation="LaTeX">$\times $ </tex-math></inline-formula> 1 linear array covers the frequency range of 2.77-13.6 GHz, with 132% fractional bandwidth. Then, four of the proposed linear arrays are connected to constitute an 8 <inline-formula> <tex-math notation="LaTeX">$\times $ </tex-math></inline-formula> 2 planar array to achieve a gain of 15.2-24.6 dBi. The proposed arrays are fabricated, tested, and mounted on a small unmanned aerial system (sUAS) for radar measurements. The real-life field radar results with the proposed arrays are presented including an echogram of the scanned area. |
| first_indexed | 2024-04-12T17:24:23Z |
| format | Article |
| id | doaj.art-5f75076744114cf498c547d2282f96ff |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-04-12T17:24:23Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-5f75076744114cf498c547d2282f96ff2022-12-22T03:23:21ZengIEEEIEEE Access2169-35362022-01-0110544105442010.1109/ACCESS.2022.31758409775815Ultra-Wideband Coplanar Vivaldi Antenna Array With Dielectric Patch Antenna for Grating Lobes SuppressionFeras Abushakra0https://orcid.org/0000-0002-5449-390XNathan Jeong1https://orcid.org/0000-0003-4610-2208Abhishek K. Awasthi2https://orcid.org/0000-0003-4880-9733Shriniwas Kolpuke3https://orcid.org/0000-0003-0110-9211Christopher Simpson4https://orcid.org/0000-0002-1441-2255Omid Reyhanigalangashi5https://orcid.org/0000-0003-3064-5101Deepak N. Elluru6https://orcid.org/0000-0001-5549-0738Aabhash Bhandari7Drew Taylor8https://orcid.org/0000-0003-4280-1327S. Prasad Gogineni9https://orcid.org/0000-0002-8818-1138Department of Electrical and Computer Engineering, The University of Alabama, Tuscaloosa, AL, USADepartment of Electrical and Computer Engineering, The University of Alabama, Tuscaloosa, AL, USADepartment of Electrical and Computer Engineering, The University of Alabama, Tuscaloosa, AL, USADepartment of Aerospace Engineering and Mechanics, The University of Alabama, Tuscaloosa, AL, USADepartment of Aerospace Engineering and Mechanics, The University of Alabama, Tuscaloosa, AL, USADepartment of Electrical and Computer Engineering, The University of Alabama, Tuscaloosa, AL, USADepartment of Electrical and Computer Engineering, The University of Alabama, Tuscaloosa, AL, USADepartment of Aerospace Engineering and Mechanics, The University of Alabama, Tuscaloosa, AL, USADepartment of Electrical and Computer Engineering, The University of Alabama, Tuscaloosa, AL, USADepartment of Electrical and Computer Engineering, The University of Alabama, Tuscaloosa, AL, USAThis paper details a new approach for enhancing the radiation characteristics of a coplanar Vivaldi antenna (CVA) array. First, the inter-element mutual coupling is reduced by introducing slots in the conventional CVA array. Then, a low-profile dielectric patch antenna (DPA) is situated between the CVA flares when it acts as a traveling wave radiator at the higher frequency band. The DPA is excited by the loop current at the radiation part of the CVA, and a set of TE modes with omnidirectional radiation patterns are excited. This combination enhances the directivity in the broadside direction of the CVA and suppresses the grating lobes by as much as 10 dB. The 4 <inline-formula> <tex-math notation="LaTeX">$\times $ </tex-math></inline-formula> 1 linear array covers the frequency range of 2.77-13.6 GHz, with 132% fractional bandwidth. Then, four of the proposed linear arrays are connected to constitute an 8 <inline-formula> <tex-math notation="LaTeX">$\times $ </tex-math></inline-formula> 2 planar array to achieve a gain of 15.2-24.6 dBi. The proposed arrays are fabricated, tested, and mounted on a small unmanned aerial system (sUAS) for radar measurements. The real-life field radar results with the proposed arrays are presented including an echogram of the scanned area.https://ieeexplore.ieee.org/document/9775815/High gain antennasradar applicationsradiation pattern enhancement |
| spellingShingle | Feras Abushakra Nathan Jeong Abhishek K. Awasthi Shriniwas Kolpuke Christopher Simpson Omid Reyhanigalangashi Deepak N. Elluru Aabhash Bhandari Drew Taylor S. Prasad Gogineni Ultra-Wideband Coplanar Vivaldi Antenna Array With Dielectric Patch Antenna for Grating Lobes Suppression IEEE Access High gain antennas radar applications radiation pattern enhancement |
| title | Ultra-Wideband Coplanar Vivaldi Antenna Array With Dielectric Patch Antenna for Grating Lobes Suppression |
| title_full | Ultra-Wideband Coplanar Vivaldi Antenna Array With Dielectric Patch Antenna for Grating Lobes Suppression |
| title_fullStr | Ultra-Wideband Coplanar Vivaldi Antenna Array With Dielectric Patch Antenna for Grating Lobes Suppression |
| title_full_unstemmed | Ultra-Wideband Coplanar Vivaldi Antenna Array With Dielectric Patch Antenna for Grating Lobes Suppression |
| title_short | Ultra-Wideband Coplanar Vivaldi Antenna Array With Dielectric Patch Antenna for Grating Lobes Suppression |
| title_sort | ultra wideband coplanar vivaldi antenna array with dielectric patch antenna for grating lobes suppression |
| topic | High gain antennas radar applications radiation pattern enhancement |
| url | https://ieeexplore.ieee.org/document/9775815/ |
| work_keys_str_mv | AT ferasabushakra ultrawidebandcoplanarvivaldiantennaarraywithdielectricpatchantennaforgratinglobessuppression AT nathanjeong ultrawidebandcoplanarvivaldiantennaarraywithdielectricpatchantennaforgratinglobessuppression AT abhishekkawasthi ultrawidebandcoplanarvivaldiantennaarraywithdielectricpatchantennaforgratinglobessuppression AT shriniwaskolpuke ultrawidebandcoplanarvivaldiantennaarraywithdielectricpatchantennaforgratinglobessuppression AT christophersimpson ultrawidebandcoplanarvivaldiantennaarraywithdielectricpatchantennaforgratinglobessuppression AT omidreyhanigalangashi ultrawidebandcoplanarvivaldiantennaarraywithdielectricpatchantennaforgratinglobessuppression AT deepaknelluru ultrawidebandcoplanarvivaldiantennaarraywithdielectricpatchantennaforgratinglobessuppression AT aabhashbhandari ultrawidebandcoplanarvivaldiantennaarraywithdielectricpatchantennaforgratinglobessuppression AT drewtaylor ultrawidebandcoplanarvivaldiantennaarraywithdielectricpatchantennaforgratinglobessuppression AT sprasadgogineni ultrawidebandcoplanarvivaldiantennaarraywithdielectricpatchantennaforgratinglobessuppression |