alexa Abstract | An RF–DC Converter with Wide Dynamic Range Input Matching For Power Recovery Applications
ISSN ONLINE(2278-8875) PRINT (2320-3765)

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering
Open Access

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Abstract

An improved RF?dc converter based on a class-E rectifier with wide-dynamic-range input matching is presented. The input impedance is controlled by two varactor diodes to compensate for impedance changes with RF input power and dc loading conditions. The RF?dc converter achieved a peak efficiency of 60% and an S11 less than −20 dB over an input RF power range of 12 dB and an operating battery voltage of 2.5?4.2 V at 800 MHz. An analytical model for input impedance and efficiency was developed and shown to match simulation and measurement results.

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Author(s): Sreelakshmi V., Rakhi B. Menon, Dr. Gnana Sheela K.

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