By Amin Rida, Manos Tentzeris
This e-book provides a step by step dialogue of the layout and improvement of radio frequency id (RFID) and RFID-enabled sensors on versatile affordable substrates for UHF frequency bands. a variety of examples of absolutely functionality development blocks (design and fabrication of antennas, integration with ICs and microcontrollers, energy resources, in addition to inkjet-printing suggestions) reveal the progressive impact of this procedure in least expensive RFID and RFID-enabled sensors fields. This procedure should be simply prolonged to different microwave and instant functions besides. the 1st bankruptcy describes the elemental performance and the actual and IT-related ideas underlying RFID and sensors expertise. bankruptcy explains intimately inkjet-printing expertise supplying the characterization of the conductive ink, which is composed of nano-silver-particles, whereas highlighting the significance of this expertise as a quick and straightforward fabrication procedure specifically on versatile natural substrates corresponding to Liquid Crystal Polymer (LCP) or paper-based substrates. bankruptcy 3 demonstrates a number of compact inkjet-printed UHF RFID antennas utilizing antenna matching strategies to compare IC's advanced impedance as prototypes to supply the evidence of thought of this know-how. bankruptcy 4 discusses some great benefits of utilizing conformal magnetic fabric as a substrate for miniaturized high-frequency circuit functions. moreover, in bankruptcy 5, the authors additionally contact up the state of the art zone of fully-integrated instant sensor modules on natural substrates and express the 1st ever 2nd sensor integration with an RFID tag module on paper, in addition to the potential of 3D multilayer paper-based RF/microwave buildings. desk of Contents: Radio Frequency id creation / versatile natural affordable Substrates / Benchmarking RFID Prototypes on natural Substrates / Conformal Magnetic Composite RFID Tags / Inkjet-Printed RFID-Enabled Sensors
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Extra info for Design and Development of RFID and RFID-Enabled Sensors on Flexible Low Cost Substrates (Synthesis Lectures on Rf Microwaves)
1) ZI C represents the impedance of the IC and ZANT represents the impedance of the antenna ∗ with ZANT being its conjugate. The simulated radiation pattern and radiation efﬁciency were numerically computed in HFSS by introducing an RLC boundary along with the port impedance that simulates the behavior of the IC (with its complex impedance feed). In Fig. 5 the 2-D radiation plot is shown for the phi=0◦ and phi=90◦ where an omnidirectional pattern is realized. The radiation pattern throughout the bandwidth of the antenna has also shown to have an omnidirectional pattern similar to that of a classic (λ/2) dipole antenna.
3: Measured return loss of the RFID tag antenna on the magnetic material with the comparison of the one on the silicone substrate. In measurement, a GS 1000 μm pitch probe was used for impedance measurements. 06 resembling that of the free space. The calibration method used was short-open-load-thru (SOLT). The initial structure was designed for the lower end of the UHF spectrum and was modeled using Zeland IE3D full wave EM software. 3 mm thickness. Then the same dimensions of the antenna were maintained for the magnetic composite material.
The next step was the actual fabrication of the material and the measurement of the electrical and magnetic characteristics, including loss. Finally, the miniaturized antenna was fabricated on the 50 CHAPTER 4. CONFORMAL MAGNETIC COMPOSITE RFID TAGS magnetic composite and its performance was measured, compared and validated along with the simulated predictions. The presented magnetic substrate is the ﬁrst ﬂexible magnetic composite tested and proven for the 480 MHz bandwidth with acceptable magnetic losses, which makes it usable for lightweight conformal/wearable applications like pharmaceutical industry and wireless health monitoring in hospital, ambulance and home-based patient care.