Design of frequency sensor based on reconfigurable rectenna

ABSTRACT A simple design for solar powered frequency sensors is presented. The design is based on a rectenna composed of a frequency reconfigurable microstrip antenna, a rectifying circuit, and a low pass filter. The operating frequency of the antenna can be tuned in the range between 2 and 2.8 GHz,...

Full description

Saved in:
Bibliographic Details
Published in:Microwave and optical technology letters 2014-08, Vol.56 (8), p.1739-1742
Main Authors: Tsai, Jia-Fu, Row, Jeen-Sheen
Format: Article
Language:English
Subjects:
Antennas
Conversion
Density
frequency sensor
Low pass filters
Microwaves
reconfigurable antenna
rectenna
Rectennas
Sensors
Solar power generation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:ABSTRACT A simple design for solar powered frequency sensors is presented. The design is based on a rectenna composed of a frequency reconfigurable microstrip antenna, a rectifying circuit, and a low pass filter. The operating frequency of the antenna can be tuned in the range between 2 and 2.8 GHz, and, in this frequency range, the rectifier can effectively perform the conversion from RF to DC. By the measured results of the rectenna, the average conversion efficiency within the operating bandwidth of 33% is 73% over a resistive load of 1 kΩ at a power density of about 0.8 mW/cm2. A frequency sensor is successfully implemented by integrating the frequency reconfigurable rectenna with a preprogrammed microprocessor powered by solar cells. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1739–1742, 2014
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.28440