Super-Broadband Rectifier With Wide-band Resistance Compression Network
and Harmonic Cycling for RF-Harvesting
Abstract
In this paper, a super-broadband (SBB) rectifier using a wideband
resistance compression network (WRCN) and harmonic cycling is proposed,
simulated, fabricated, measured and analyzed in detail for the
harvesting of ambient Radio frequency (RF) energy. Meanwhile, impedance
compression and matching are achieved to implement the SBB using WRCN
and impedance operation networks. Additionally, harmonic cycling
structure and bending technology are employed to improve the power
conversion efficiency (PCE) and reduce the size, respectively. For
demonstration, a prototype of the proposed rectifier is fabricated and
measured. The measured results are in good accordance with the simulated
ones, indicating that the rectifier can provide high efficiency and
ultra-broadband rectification characteristics. A PCE over 50% is
realized at 3.5 GHz with an input power range of 6–24 dBm, and a PCE of
75% is obtained at an input power of 18 dBm. The PCE is greater than
50% at 17 dBm with an input frequency of 2.7–4.6 GHz. This work can
find significant applications in the development of RF-harvesting.