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Wideband Filtering Slot Antenna Design with Stable Gain Using Characteristic Mode Analysis.
- Source :
-
Sensors (14248220) . Apr2022, Vol. 22 Issue 7, p2780. 10p. - Publication Year :
- 2022
-
Abstract
- A filtering slot antenna with a simple structure combination using characteristic mode analysis (CMA) is proposed. To realize filtering characteristics, characteristic magnetic currents of line and ring slots are analyzed and designed. Then, the folding-line slot and double-ring slot are selected to realize radiation null separately and combined to construct the basic slot antenna. By properly exciting the selected characteristic modes, a wide filtering bandwidth and a stable gain are obtained. To validate the design process, a prototype antenna with a finite ground plane of about 1.1 λ × 1.1 λ is designed and fabricated. Simulated and measured results agree well, which both show a sharping roll rate in the lower and higher frequency and a flat gain realization in the pass band. The filtering bandwidth is 32.7%, the out-of-band suppression level at the higher frequency is over 20 dB, and the gain in the working frequency varies from 3.9 to 5.2 dB. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ANTENNA design
*SLOT antennas
*ANTENNAS (Electronics)
*BANDWIDTHS
Subjects
Details
- Language :
- English
- ISSN :
- 14248220
- Volume :
- 22
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Sensors (14248220)
- Publication Type :
- Academic Journal
- Accession number :
- 156343821
- Full Text :
- https://doi.org/10.3390/s22072780