Abstract
The RF-to-dc power conversion efficiency (PCE) of the conventional dual-linearly polarized (DLP) rectenna often suffers from uneven RF power received by two ports of the DLP antenna, which is caused by a tilt angle between the linearly polarized incidence and the two polarizations of the antenna. In this letter, a hybrid coupler is employed to redistribute the uneven power from the DLP antenna to two even power distributions for a successive modified Greinacher charge pump (GCP). Thus, a high RF-to-dc PCE of the modified GCP can be maintained. Both theoretical analysis and experiment validate the proposed power distribution scheme, which maintains a stable high PCE of a DLP rectenna irrespective of polarization tilt angle. The proposed scheme is, thus, suitable for high-efficiency wireless power transfer.
| Original language | English |
|---|---|
| Article number | 8525298 |
| Pages (from-to) | 1119-1121 |
| Number of pages | 3 |
| Journal | IEEE Microwave and Wireless Components Letters |
| Volume | 28 |
| Issue number | 12 |
| DOIs | |
| State | Published - Dec 2018 |
| Externally published | Yes |
Keywords
- Dual-linearly polarized (DLP) rectenna
- hybrid coupler
- wireless power transfer (WPT)
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