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Miniature Circularly Polarized Rectenna With Reduced Out-of-Band Harmonics

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3 Author(s)

Wireless embedded sensors are becoming increasingly important for many safety critical applications. Sensor batteries or capacitors must be charged as needed in order to achieve high data rate communications. A miniature circularly polarized rectenna operating at 5.5 GHz is introduced which, with the help of an integrated band-reject filter, reduces out-of-band harmonic emission significantly. The rectenna has a conversion efficiency of 74% with more than 50 dB out-of-band harmonic suppression at 11 GHz.

Published in:

IEEE Antennas and Wireless Propagation Letters  (Volume:5 ,  Issue: 1 )