Journal ArticleDOI
A Dual-Environment Active RFID Tag Antenna Mountable on Metallic Objects
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TLDR
In this paper, a dual-environment active RFID tag antenna is proposed, where a microstrip line fed at the middle portion is used to excite two operation modes under two different working environments.Abstract:
A dual-environment active RFID tag antenna is proposed in this letter. A microstrip line fed at the middle portion is used to excite two operation modes under two different working environments. In free-space condition, the slot mode of the proposed antenna shows a 50-Ω load at the input port, while the patch mode shows a high impedance close to an open circuit. Therefore, only the slot contributes to radiation. In opposite, when the antenna is mounted on a conductive surface, the slot mode shows a high impedance at the input port, whereas the patch mode is matched and therefore radiates. A prototype of the proposed antenna is fabricated and tested. The measured impedance bandwidths are respectively 22.13% from 2.09 to 2.61 GHz and 4.17% from 2.35 to 2.45 GHz when the proposed antenna is respectively applied in free space and on a metallic surface. The measured peak gains and radiation efficiencies at 2.4 GHz in these two conditions are 4.13 dB and 93.2%, 9.21 dB and 95%, respectively. Good agreement between measurement and simulation demonstrates the feasibility of the dual-environment property.read more
Citations
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Journal ArticleDOI
Compact Folded Dipole With Embedded Matching Loop for Universal Tag Applications
TL;DR: In this article, a coin-shaped folded dipole is proposed for designing a UHF tag that can be placed in free space and on metal, and the tag antenna is composed of a matching loop, which is encircled by two patch-shaped radiating arms, forming an embedded structure.
Journal ArticleDOI
Advances in the Design Techniques and Applications of Chipless RFIDs
Vijay Sharma,Mohammad S. Hashmi +1 more
TL;DR: In this article, the authors discuss some of the critical applications that can be directly served by Chipless RFID and also elaborates on the associated constraints which limit the mass deployment of the ChiplessRFID.
Journal ArticleDOI
Folded-slot active tag antenna for 5.8 ghz rfid applications
TL;DR: In this paper, a folded slot active tag antenna for 5.8 GHz radio frequency identification (RFID) applications is presented, which consists of an inverted U-shaped monopole radiator fed by a coplanar waveguide (CPW) feed line and extended ground planes.
Journal ArticleDOI
Compact Elliptical UWB Antenna for Underwater Wireless Communications
Adam R. H. Alhawari,Sama Fouad Majeed,Tale Saeidi,Sajid Mumtaz,Hisham Alghamdi,Ayman Hindi,A. H. M. Almawgani,Muhammad Imran,Qammer H. Abbasi +8 more
TL;DR: In this paper, a compact elliptical ultra wideband (UWB) antenna is designed to resonate from 1.3 to 7.2 GHz with a dielectric constant of 2.55 mm and a thickness of 0.8 mm.
Journal ArticleDOI
Compact Ring Antennas With High-Impedance Line Loaded With Distributed Inductors for On-Metal Tag Design
TL;DR: In this paper , two compact ultra-high-frequency (UHF) tag antennas, which consist of a square ring loaded with two distributed inductors, are proposed for on-metal applications.
References
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Journal ArticleDOI
Planar inverted-F antenna for radio frequency identification
TL;DR: A small and low-cost antenna solution for radio frequency identification (RFID) tags is presented that is applicable in many different environments because the impedance of the antenna is immune to the platform.
Journal ArticleDOI
Compact slotted planar inverted-F RFID tag mountable on metallic objects
H. Kwon,Bomson Lee +1 more
TL;DR: In this article, a compact slotted PIFA-type RFID tag (900 MHz) mountable on metallic objects is presented, which can be easily matched to most microchips and facilitates their attachment on its slot.
Journal ArticleDOI
Compact structure of UHF band RFID tag antenna mountable on metallic objects
Byungje Lee,Byunggil Yu +1 more
TL;DR: In this paper, a new type of compact tag antenna, which can be effectively mounted on metallic objects, is proposed for UHF band RFID systems, consisting of a simple microstrip path and feed line, and it is fabricated on a very thin (1.6 mm) subtrate compared with previous works.
Journal ArticleDOI
Fork-shaped RFID tag antenna mountable on metallic surfaces
TL;DR: In this article, a low-cost antenna for radio frequency identification (RFID) tags mountable on metallic surfaces is presented, which has the structure of the folded dipole type with two parasitism-patches.
Journal ArticleDOI
UHF RFID tag antenna using two PIFAs embedded in metallic objects
TL;DR: In this paper, an embedded patch-type RFID tag antenna (UHF band) using ceramic material for tagging metallic objects is presented; the proposed tag is embedded in the metallic object; the diameter of the tag is 34 mm and the height is 5 mm.