A Novel RF Energy Harvesting Module Integrated on a Single Substrate

TL;DR

This paper introduces a compact RF energy harvesting module integrated on a single substrate, capable of capturing multiple frequency bands and producing DC power without port connectors, using an antenna array, power combiner, and integrated converter.

Contribution

The paper presents a novel integrated RF energy harvesting module with multi-band capability, antenna array, and built-in converter, eliminating the need for port connectors and enhancing power capture efficiency.

Findings

Produces 1.8V DC at +40dB RF input

Operates across GSM, ISM, WLAN, and UWB bands

No port connectors required

Abstract

This paper presents the RF energy harvesting module (RECTENNA). The working range of this module includes multiple bands i.e. GSM, ISM, WLAN, and UWB band. To enhance the capturing RF power capability an array arrangement of coplanar monopole antenna has been proposed. Wilkinson power combiner has also been implemented to combine the powers of this antenna array. The RF DC converter circuit having seven stages has also been integrated with this structure. This module produces the DC voltage of 1.8V with respect to +40dB RF input. It is the unique module because it has no need of port connectors. The impedance matching of antenna and converter has been fulfilled by incorporating the passive component at the combiners branch. The value of this passive component is kept equal to the existing value of impedance at input port of converter circuit.