Auto-Calibrating Threshold Compensation Technique for RF Energy Harvesters

Gharehbaghi K., Zorlu O., Kocer F., KÜLAH H.

IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Arizona, United States Of America, 17 - 19 May 2015, pp.179-182 identifier

  • Publication Type: Conference Paper / Full Text
  • City: Arizona
  • Country: United States Of America
  • Page Numbers: pp.179-182
  • Keywords: Dickson rectifier, low power calibration, RF energy harvesting, threshold compensation technique
  • Middle East Technical University Affiliated: Yes

Abstract

This paper presents the design of a new threshold compensation technique for UHF Dickson rectifiers. The proposed solution addresses the efficiency reduction of previous architectures especially under large input powers. The measurements show that the proposed technique achieves very good efficiency within 10 dBm variation of the input power. Therefore, the technique is suitable for applications where the incident power is not constant. Thanks to the reduction in the reverse leakage current, a peak efficiency of 34% at 433 MHz was measured.