RF to DC Energy Harvesters: Benefits and Manufacturers

RF to DC energy harvesters convert ambient radio frequency signals into electrical energy. They enable low power IoT and wireless sensor applications. The popular manufacturers of RF to DC converter IC modules include Powercast Corporation, E-Peas, RF DIAGNOSICS etc.

RF to DC Converter Introduction

The chip device or module which converts RF energy to DC (Direct Current) energy is known as an RF to DC energy harvester. They provide harvested energy to the storage elements attached. The typical applications include capacitor and battery recharging, battery less wireless sensors, low power consumer electronics, sensors, displays and microprocessors etc.

The RF to DC conversion reference designs are developed specific to different standards viz. NFC, UHF, WiFi, Bluetooth, 4G and various frequency ranges (13.56 MHz, 915 MHz, 2.45 GHz, 1710-1915 MHz).

The figure depicts the position of the RF to DC converter module in an RF energy harvesting system. As shown, it is placed between the RF antenna and the charge management module. The charging module can either be a capacitor which stores charge or a rechargeable battery.

RF Energy Harvesting Selection Guide

Following generic features or specifications are considered for selecting an RF to DC converter for an energy harvesting circuit:

• Wide operating frequency range
• Wide operating power range
• Wide operating temperature range
• Higher RF to DC conversion efficiency
• Should harvest almost all modulation schemes
• Input and Output impedance for connections
• Interoperability with various RF sources such as NFC, WiFi, Bluetooth, UHF, 4G etc.
• Profile or dimensions
• Better sensitivity
• RoHS compliance

Benefits of RF to DC Harvester

An RF to DC energy harvester converts ambient RF signals into usable DC power, enabling battery-free or low-power operation for IoT devices, wireless sensors, and remote monitoring systems. It enhances energy efficiency by harvesting power from existing RF sources like Wi-Fi, cellular networks, and TV signals.

This technology reduces dependence on wired power or frequent battery replacements, making it ideal for smart cities, medical implants, and industrial automation. Additionally, it supports sustainable energy solutions by utilizing ambient RF energy, promoting eco-friendly and cost-effective power alternatives for low-power electronics.

RF to DC Energy Harvester Manufacturers or Vendors

Following is the list of RF to DC energy harvester manufacturers or vendors.

Conclusion

Harnessing ambient RF energy reduces battery dependency. Choose reliable manufacturers for efficient RF energy harvesting solutions.