Abstract
This paper proposes a high-efficiency dual-band on-chip rectifying antenna (rectenna) at 35 and 94 GHz for wireless power transmission. The rectenna is designed in slotline (SL) and finite-width ground coplanar waveguide (FGCPW) transmission lines in a CMOS 0.13-μm process. The rectenna comprises a high gain linear tapered slot antenna (LTSA), an FGCPW to SL transition, a bandpass filter, and a full-wave rectifier. The LTSA achieves a VSWR=2 fractional bandwidth of 82% and 41%, and a gain of 7.4 and 6.5 dBi at the frequencies of 35 and 94 GHz. The measured power conversion efficiencies are 53% and 37% in free space at 35 and 94 GHz, while the incident radiation power density is 30 mW/cm2. The fabricated rectenna occupies a compact size of 2.9 mm2.
Original language | English |
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Article number | 5618596 |
Pages (from-to) | 3598-3606 |
Number of pages | 9 |
Journal | IEEE Transactions on Microwave Theory and Techniques |
Volume | 58 |
Issue number | 12 PART 1 |
DOIs | |
State | Published - Dec 2010 |
Keywords
- Dual-band rectenna
- finite-width ground coplanar waveguide (FGCPW)
- linear tapered slot antenna (LTSA)
- power conversion efficiency (PCE)
- Schottky diode
- slotline (SL)