Abstract
An efficient and straightforward antenna design method is presented that maximizes the ratio of total efficiency and specific absorption rate (SAR). This goal is achieved with a multiport antenna cluster technique where several ports are excited collectively with appropriate feeding weights. These weights are found as an eigenvalue solution formulated in terms of the radiated and near-field power of an antenna. The method relies on both the near-field (SAR) and far-field (radiation) physics of an antenna and it can be applied to various design cases. The importance of the maximization of total-efficiency-SAR ratio and the feasibility of the proposed approach are demonstrated with a simple multiple-dipole antenna example and with a more realistic antenna design where a metal-rimmed antenna is held in the user's hand.
Original language | English |
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Pages (from-to) | 12282 - 12287 |
Number of pages | 6 |
Journal | IEEE Transactions on Antennas and Propagation |
Volume | 70 |
Issue number | 12 |
Early online date | 2022 |
DOIs | |
Publication status | Published - Dec 2022 |
MoE publication type | A1 Journal article-refereed |
Keywords
- Antenna cluster
- Antennas
- Eigenvalues and eigenfunctions
- Electric fields
- mobile antenna
- Mobile antennas
- Optimization
- Rayleigh quotient
- Specific absorption rate
- specific absorption rate
- Surface impedance