Abstract
A differential 2×2 rectenna unit is proposed for scalable microwave power harvesting. An air dielectric-loaded aperture-coupled dual-polarized patch antenna is designed to achieve high radiation gain and efficiency with low cross polarization. It facilitates uneven-even power distribution with high polarization purity by two hybrid couplers for polarization-insensitive energy reception. Through the differential operation of the antenna and rectifiers, enhanced radiation performance and high RF-to-DC conversion efficiency in low spectrum density scenarios can be achieved. Simulations of the rectenna unit and array both demonstrate outstanding performance, which shows potential for applications in a programmable microwave energy harvesting device (Fig. 1).
| Original language | English |
|---|---|
| Journal | Proceedings of the IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications, IMWS-AMP |
| Issue number | 2024 |
| DOIs | |
| State | Published - 2024 |
| Event | 2024 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications, IMWS-AMP 2024 - Nanjing, China Duration: 8 Nov 2024 → 11 Nov 2024 |
Keywords
- Rectenna
- differential antenna
- microwave power transmission (MPT)
- polarization purity
- rectenna array
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