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To increase power conversion efficiency (PCE), we introduce a new rectifier, which combines advantages of cross-coupled and cross-coupled bridge rectifiers by switching between the two topologies according to the incoming signal power level. In conventional designs, cross-coupled topology attains up to 80% PCE in the low-power range, while cross-coupled bridge topology attains up to 80% in the mid-power...
The central idea of this paper is to show the prospect of RF energy harvesting and converting the energy into DC, utilizing the reasonable power obtained, for low power device applications. The system harvests energy from various frequencies available in the spectrum band. The first part introduces some of the disadvantages of larger antenna height in KHz and higher path loss in GHz band of frequencies...
This paper presents design, realization and measurements of an energy harvesting circuit, working on the LTE frequency bands. Ambient radio frequency sources are considered, thus low power levels have been assumed for the circuit design. The circuit was implemented and several measurements were carried out for different frequencies, loads and input power levels.
The results of this paper based on analysis of design patch antenna with minimum dimensions and permittivity acquirable that produces a maximum power output. Since RF (Radio Frequency) energy harvesting is a recurring theme which enormously effective and applicable in occasions where remote charging and wireless power transmission take place. The potential use of RF energy was investigated experimentally...
This paper demonstrates a highly efficient, low-voltage ac/dc converter using a voltage multiplier (octupler) circuit architecture intended for vibrational energy harvesting applications where a low-voltage ac waveform is used to charge a battery. The circuit employs output-powered active diodes and does not require any external power supply or startup circuitry. The circuit rectifies and boosts input...
A major obstacle of wireless energy harvesting is to convert relatively low power wireless RF energy into sufficiently high DC voltage for practical use. This paper explores and studies a topology where several voltage doublers are connected in series to boost up the DC output voltage from the wireless energy harvesting circuits. A prototype has been designed and fabricated to test the feasibility...
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