Compact Circularly Polarized Rectenna with Unbalanced Circular Slots

882 IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 56, no(prenominal) 3, MARCH 2008 Compact circularly Polarized Rectenna With Unbalanced Circular Slots Tzong-Chee Yo, Chien-Ming Lee, Chen-Ming Hsu, and Ching-Hsing Luo, Member, IEEE hookA novel rectifying aeriform (rectenna) victimization a adjure circularly polarized (CP) man aerial with RF-to-DC king conversion break out at 2.45 GHz is introduced, in which the unbalanced slots structure is adopted for size reduction and heartbeat likeable rejection. To contribute a rectenna for RF military unit conversion, the rent side of the CP barbel is the threefold recti?er circuit with tertiary order large-hearted rejection radial stub for ef?ciency optimization and harmonised great power re-radiation elimination. The adopted CP antenna built on take a breather cost FR-4 substrate has measured bandwidth of 137 MHz (10 dB payoff loss) as well as 30 MHz CP bandwidth (3 dB axial ratio). By up to 3rd order harmonised rejection, the RF-to-DC conversion ef?ciency would reach 53% and 75% with 1 K resistor load chthonian ANSI/IEEE uncontrolled and controlled RF charitable exposure limit respectively. world power TermsCircular polarization, shucks antenna, recti?ers, rectifying antenna (rectenna), tuner power transmittal (WPT). I.

INTRODUCTION R ECTIFYING antenna (rectenna) which check stub end convert RF zero to DC power plays an grievous role in free set wireless power transmission (WPT). over the last century, the development of rectenna for space solar power transmission (SSPT) [1] as well as WPT [2] had groovy achievement with speci?c functions; and the applications e.g., actuator [3] or wireless sensors [4] were in addition employ with WPT techniques. It shows that the WPT techniques using rectennas concur great potential to allow energy to load by means of free space without using personal transmission line. The ordinary rectenna in the prior literatures [1][4] basically consists of quadruple elements: antenna, low race ?lter (LPF), diodes, and DC pass capacitor. The sign development...If you indigence to get a full essay, order it on our website: Orderessay

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