Abstract
Energy scavenging is a promising technique for micro-devices such as wireless sensor networks (WSNs). Radio frequency (RF) is considered a sustainable source that can be utilized and harvested due to its important features. The essential goal of this study was designing and investigating a wide input power range through a theoretical and simulation work for the 900 MHz frequency band with acceptable efficiency. In this work, we investigated both the low input power and the high input power range circuits; the two circuits were combined to achieve the goal of the wide input power range. L impedance matching elements were used to perform the desired matching between the power source and the circuit to reduce the reflected power resulted in enhanced RF-DC conversion efficiency. 60 % was the peak efficiency for the proposed design at 0 dBm with the output voltage of 16.56 V, and a generated current of 1.39 mA for the load of 12KΩ.
Highlights
The unique features of wireless sensor networks (WSNs) have made it an interesting research area for scientists all around the world
The performance efficiency of WSNs depends on the battery lifetime, the lifetime should be within several months or years
The proposed design passed through three stages: first, design the low input power range circuit with a single-stage Dickson voltage multiplier by using HSMS-2852 Schottky diode
Summary
The unique features of wireless sensor networks (WSNs) have made it an interesting research area for scientists all around the world. WSNs are utilized in diverse areas such as health, environment, and industrial monitoring. Batteries are the basic power source for wireless sensors [1], [2]. Battery replacement can become complicated in sensor networks consisting of thousands of nodes [3], energy harvesting techniques have been growing rapidly. Some sources of renewable energy include solar radiation, wind, heat, vibration, etc [4]–[8]. Energy scavenging can provide a continuous power to feed WSNs for autonomous sensors [2]–[11]. RF energy scavenging can be utilized to overcome defects of the traditional sources.
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