Theoretical study of ground radiation tag antenna with Tunable open-slot exciter

2016 ◽  
Vol 9 (4) ◽  
pp. 945-952 ◽  
Author(s):  
Yi-Fang Lin ◽  
Ming-Jui Chang ◽  
Hua-Ming Chen ◽  
Shih-Ting Huang
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Ground Plane ◽  
Measurement Data ◽  
Power Measurement ◽  
Radiated Power ◽  
Quarter Wavelength ◽  
Frequency Identification ◽  
Good Agreement ◽  
Inductive Reactance

A novel radio frequency identification tag antenna is composed of a resonant open-slot exciter and a dipole-type ground radiator. For a conjugate match to the Alien Higgs-4 chip impedance of 8−j149 Ω at 925 MHz, a quarter wavelength open-slot resonator embedded at the center of the dipole-type ground plane (130 × 18 mm2) was investigated and fabricated. Simple size adjustments and various loaded inductor of the open-slot resonator allow for easy control of the tag antenna resistance and inductive reactance, from which the chip impedance requirement can be easily obtained. The read range of the prototype antenna attached on a foam in the free space can reach more than 9 m, which has been tested for a radio frequency identification reader with 4.0-W of effective isotropic radiated power. Measurement data are in good agreement with simulation results.

Research on U-shaped tuning stub RFID tag on different objects

2014 ◽  
Vol 7 (6) ◽  
pp. 629-636 ◽  
Author(s):  
Chien-Hung Chen ◽  
Yi-Fang Lin ◽  
Hua-Ming Chen
Keyword(s):  
Radio Frequency Identification ◽  
Measurement Data ◽  
Antenna Measurement ◽  
Antenna Structure ◽  
Rfid Tag ◽  
Radiated Power ◽  
Frequency Identification ◽  
Read Range ◽  
Good Agreement ◽  
Inductive Reactance

A new ultra-high frequency radio frequency identification (RFID) tag antenna, which is comprised a U-shaped tuning stub and a dipole radiator for different permittivity surfaces is investigated, fabricated, and measured. For a conjugate match to the NXP G2XM chip impedance of 29–j137 at 915 MHz, a dipole tag antenna with U-shaped stubconnected to dipole arms was designed. Simple size adjustments of the U-shaped tuning stub and dipole radiator of the antenna allow for easy control of the antenna resistance and inductive reactance, from which the chip impedance requirement may be readily satisfied. The read range of the prototype antenna attached on a different permittivity surfaces (εr= 1–4) can reach more than 4.5 m, which has been tested for an RFID reader with 4.0 W of effective isotropic radiated power. The antenna structure consists of two dipole load bars and two loop electrically connected. The design offers more choice of freedom to tune the input impedance of the proposed antenna. Measurement data are presented which are in good agreement with simulation results. The design is suitable for mounting on all kinds of objects. The fabricated tag sensitivity of −3 dBm, read range of 7 m on the x–z and y–z planes, and the measured orientation radiation patterns were obtained in the desired frequency band.

scholarly journals Design a Compact Coplanar Wideband Antenna Used in Radio Frequency Identification Systems

2020 ◽  
Vol sceeer (3d) ◽  
pp. 134-138
Author(s):  
Sufyan Ali ◽  
Ahmed Reja ◽  
Yousif Hachim
Keyword(s):  
Resonant Frequency ◽  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Return Loss ◽  
Ground Plane ◽  
Substrate Material ◽  
Tangent Loss ◽  
Frequency Interval ◽  
Dielectric Thickness ◽  
Frequency Identification

In this paper, a new compact coplanar antenna used for Radio frequency identification (FID) applications is presented. This antenna is operated at the resonant frequency of 2.45 GHz. The proposed antenna is designed on an epoxy substrate material type (FR-4) with small size of (40 × 28) mm2 in which the dielectric thickness (ℎ) of 1.6 mm, relative permittivity (er) of 4.3 and tangent loss of 0.025. In this design the return loss is less than −10 dB in the frequency interval (2.12 − 2.84) GHz and the minimum value of return loss is -32 dB at resonant frequency. The maximum gain of the proposed antenna is 1.22 dB and the maximum directivity obtained is 2.27 dB. The patch and the ground plane of the proposed antenna are in the same surface. The proposed antenna has a wide bandwidth and omnidirectional radiation pattern with small size. The overall size of the compact antenna is (40 × 28 × 1.635) mm3. The Computer Simulation Technology (CST) microwave studio software is used for simulation and gets layout design.

scholarly journals Design of Compact Tri-Band Fractal Antenna for RFID Readers

2017 ◽  
Vol 7 (4) ◽  
pp. 2036 ◽  
Author(s):  
Mohamed Ihamji ◽  
Elhassane Abdelmounim ◽  
Hamid Bennis ◽  
Mostafa Hefnawi ◽  
Mohamed Latrach
Keyword(s):  
Radio Frequency ◽  
Radiation Pattern ◽  
Radio Frequency Identification ◽  
Input Impedance ◽  
Microstrip Antenna ◽  
Ground Plane ◽  
Physical Parameters ◽  
Fractal Antenna ◽  
Frequency Identification ◽  
Rectangular Microstrip Antenna

In this paper, a multiband and miniature rectangular microstrip antenna is designed and analyzed for Radio Frequency Identification (RFID) reader applications. The miniaturization is achieved using fractal technique and the physical parameters of the structure as well as its ground plane are optimized using CST Microwave Studio. The total area of the final structure is 71.6 x 94 mm<sup>2</sup>. The results show that the proposed antenna has good matching input impedance with a stable radiation pattern at 915 MHz, 2.45 GHz, and 5.8 GHz.

scholarly journals A Novel L-Shape Ultra Wideband Chipless Radio-Frequency Identification Tag

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Khaled Issa ◽  
Muhammad A. Ashraf ◽  
Mohammed R. AlShareef ◽  
Hatim Behairy ◽  
Saleh Alshebeili ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Measurement Data ◽  
Ultra Wideband ◽  
Spectral Signature ◽  
Rfid Tag ◽  
High Data ◽  
Frequency Identification ◽  
Dual Polarized ◽  
5 Ghz

A novel compact dual-polarized-spectral-signature-based chipless radio-frequency identification (RFID) tag is presented. Specifically, an L-shape resonator-based structure is optimized to have different spectral signatures in both horizontal and vertical polarizations, in order to double the encoding capacity. Resonators’ slot width and the space between closely placed resonators are also optimized to enhance the mutual coupling, thereby helping in achieving high-data encoding density. The proposed RFID tag operates over 5 GHz to 10 GHz frequency band. As a proof of concept, three different 18-bit dual-polarized RFID tags are simulated, fabricated, and tested in an anechoic chamber environment. The measurement data show reasonable agreement with the simulation results, with respect to resonators’ frequency positions, null depth, and their bandwidth over the operational spectrum.

Design of Circular Patch Microstrip Antenna with Egg Slot for 2.4 GHz Ultra-Wideband Radio Frequency Identification (UWB RFID) Tag Applications

2014 ◽  
Vol 513-517 ◽  
pp. 3414-3418 ◽  
Author(s):  
Yuwono Rudy ◽  
Dwi A. Wahyu ◽  
Fauzan Edy P. Muhammad
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Microstrip Antenna ◽  
Ground Plane ◽  
White Paper ◽  
Ultra Wideband ◽  
Rfid Tag ◽  
Circular Patch ◽  
Frequency Identification ◽  
Circular Microstrip Antenna

This paper discusses concerning design of circular patch microstrip antenna for Radio Frequency Identification (RFID) tags application in microwave band. Circular microstrip antenna is designed with an egg slot on the ground plane and feed line to get ultra wideband. The design of microstrip antenna using Phenolic White Paper-FR2 with dielectric constant (or) =4.5. Based on simulation results, the antenna shows it works at frequency 2128-4807 MHz with gain of-17,398 dBi. The rectangular stub, caused the decreasing of bandwidth but the gain increase. By adding a rectangular stub on the ground plane, antenna works at frequency 1166 3475 MHz with increasing gain of-2,733 dBi.

scholarly journals Miniturize Flexible RFID Antenna Design using Metamaterial Structure

2019 ◽  
Vol 18 (2) ◽  
pp. 55-59
Author(s):  
Nur Rabihah Dulkarim ◽  
Mohd Fairus Mohd Yusoff ◽  
Zaharah Johari
Keyword(s):  
Resonant Frequency ◽  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Rapid Development ◽  
Ground Plane ◽  
Future Application ◽  
Metamaterial Structure ◽  
Microstrip Patch ◽  
Frequency Identification ◽  
Radio Frequency Waves

Radio Frequency Identification (RFID) is the application of electromagnetic fields to identify and track tags that attached on the objects. It transmits or reads the radio frequency waves in the system. However, due to rapid development of technology in telecommunication, a much more smaller and flexible device is needed. Therefore, in this paper, a new design of flexible RFID antenna using metamaterial structure has been proposed. At first, the basic rectangular microstrip patch antenna with resonant frequency of 900MHz is designed. Then, the CSRR metamaterial structure is introduced at the ground plane to reduce the size of the antenna while the polydimethylsiloxane (PDMS) material is being use as the antenna substrate for flexibility. All the simulation designs were done using CST software. The antenna performances such as resonant frequency, return loss, radiation pattern, gain and bandwidth are then be analyzed and presented. The results show good performances and can be applied for future application.

scholarly journals Compact Circularly Polarized Multiband Antennas for RFID Applications

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
H. M. El Misilmani ◽  
M. Al-Husseini ◽  
K. Y. Kabalan ◽  
A. El-Hajj
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Microstrip Line ◽  
Ground Plane ◽  
Dual Band ◽  
Circularly Polarized ◽  
Multiband Antennas ◽  
Compact Size ◽  
Frequency Identification ◽  
Rfid Applications

This paper presents multiband circularly polarized (CP) antennas for radio frequency identification (RFID). A coax-fed and a microstrip-line-fed antennas having optimized cross-slots in their patches are first designed for dual-band CP operation. The microstrip-line-fed design is then modified, by incorporating a U-shaped slot in its partial ground plane, to achieve additional operation band with a CP characteristic. Simulation and measured results of the presented designs are reported. The measured results are in accordance with the computed ones. The compact size and CP property make these designs suitable for RFID applications.

scholarly journals Flexible, Fully Printable, and Inexpensive Paper-Based Chipless Arabic Alphabet-Based RFID Tags

Sensors ◽  
2022 ◽  
Vol 22 (2) ◽  
pp. 564
Author(s):  
Jawad Yousaf ◽  
Eqab Almajali ◽  
Mahmoud El Najjar ◽  
Ahmed Amir ◽  
Amir Altaf ◽  
...  
Keyword(s):  
Radio Frequency Identification ◽  
Ground Plane ◽  
Metallic Copper ◽  
Rfid Tags ◽  
Robust Detection ◽  
Frequency Identification ◽  
Electromagnetic Signature ◽  
First Time ◽  
Good Agreement

This work presents the design and analysis of newly developed reconfigurable, flexible, inexpensive, optically-controlled, and fully printable chipless Arabic alphabet-based radio frequency identification (RFID) tags. The etching of the metallic copper tag strip is performed on a flexible simple thin paper substrate (ϵr = 2.31) backed by a metallic ground plane. The analysis of investigated tags is performed in CST MWS in the frequency range of 1–12 GHz for the determination of the unique signature resonance characteristics of each tag in terms of its back-scattered horizontal and vertical mono-static radar cross section (RCS). The analysis reflects that each tag has its own unique electromagnetic signature (EMS) due to the changing current distribution of metallic resonator. This EMS of each tag could be used for the robust detection and recognition of all realized 28 Arabic alphabet tags. The study also discusses, for the first time, the effect of the change in font type and size of realized tags on their EMS. The robustness and reliability of the obtained EMS of letter tags is confirmed by comparing the RCS results for selective letter tags using FDTD and MoM numerical methods, which shows very good agreement. The proposed tags could be used for smart internet of things (IoT) and product marketing applications.

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