Improving radiation characteristics of UHF RFID antennas by zigzag structures

Nguyễn, Văn Hiếu; Phan, Hồng Phương; Hoang, H.; Nguyen, Dat Son; Dang, Chien Mau; Nguyen-Tran, Thuat; Tran, Nhan Ai; Hoang, Anh; Fribourg–Blanc, Eric

doi:10.1109/atc.2011.6027445

Cited by 11 publications

(7 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the study by Nguyen Dinh Dung et al [17], from February 2010 to June 2011 in Hanoi, the main causes of accidents were traffic accidents (36.4%), occupational accidents (33.2%), daily-life accidents (30.4%). This was similar to the result of Nguyen Huy Son and Hoang Van Dung [18] at Thai Nguyen Central General Hospital (from January 2010 to June 2011): out of a total of 8.018 traumatic patients at the Emergency Department, there were: 5,821 (72.6%) traumatic patients with traffic accidents, 33 cases of occupational accidents (5.4%), 1,235 cases caused by daily-life accidents (15.4%), 529 cases with violence (6,6%) .…”

Section: About Accidents and Injuriessupporting

confidence: 91%

The situation of pre-hospital emergency care through traumatic patients have been admitted to emergency department of Viet Duc University Hospital in 2023

Chinh Nguyen Duc,

Anh Tran Tuan,

Hung Do Manh

et al. 2024

GSC Adv. Res. Rev.

View full text Add to dashboard Cite

Introductions: Pre-hospital Emergency Care (PEC), especially for severe trauma is playing an important role. The study was conducted to provide an overview of the situation of PEC in Vietnam through traumatic patients at Viet Duc University Hospital. Materials and methods: A cross-sectional study enrolled all traumatic patients admitted to the Emergency Department of Hospital and had complete medical records, during the period from July to September, 2023, regardless of gender, age. Data were collected and processed using SPSS 20.0 software. Results: Characteristics of target population: 343 cases of traumatic patients were enrolled, male was majority accounted for 71.4%; The age group from 15 to 59 years old accounted for highest proportion (63%), ≥ 60 years old (32.6%). The sites of accident were mostly occurred on road (64.3%), at home (23.9%) and working place (10.2%). The brain injury accounted for the highest proportion (55.4%), multiple injuries (54.8%), extremities injury (38.5%), maxillofacial injury (25.1%) and spine injury (21.0%). Situation of PEC: First aid was mostly provided by first witness/accompanying person (64.5%), by community first aid provider (24.1%), only 11.4% provided by professional health worker. 8.7% patients were transported by taxi/car, 16.7% by unsafe ambulance, lacking official regulated medicine or equipment, or the health personnel did not know about the patient’s medical history. Some first aid were not provided on scene including: airway management 22.2%, wound care and dressing 33.0%, collar to cervical spine 14.5%, extremities splint 34.9%. Additionally, many extremities splint and wound care, 24.5% and 37.5% respectively, were done improperly. Conclusions and recommendations: The study showed some challenges such as improper first aid provision or unsafe transportation, which potentially cause unwanted risk for the patients. The author highly recommend the improvement of PEC according to the new law on this issue.

show abstract

Section: About Accidents and Injuriessupporting

confidence: 91%

The situation of pre-hospital emergency care through traumatic patients have been admitted to emergency department of Viet Duc University Hospital in 2023

Chinh Nguyen Duc,

Anh Tran Tuan,

Hung Do Manh

et al. 2024

GSC Adv. Res. Rev.

View full text Add to dashboard Cite

show abstract

“…For a constant temperature, the read range follows a normal distribution with a sharp peak at the resonant frequency. However, as the temperature increases, the graph is skewed with the same normal distribution with slightly lesser read range values [44][45][46][47][48][49][50][51][52][53][54]. General structure of PTFE sensing antenna is depicted in Figure 6.…”

Section: Performance Evaluation Of Ermal Sensitivity Betweenmentioning

confidence: 99%

[Retracted] Characterization of Composite RFID Antennas Based on Thermal Properties: A Survey

Varadhan

Chamatu

Subramanian

2021

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

In this paper, a comprehensive survey on thermal and geometric design parameters of composite materials utilized in the fabrication of modern RFID systems has been discussed mainly due to its advantages such as lightweight and high strength. Designing of RF antenna setup requires careful consideration of material, geometric and fabrication parameters. Polymer materials were chosen as the substrate and subjected to extensive studies to determine and predict the capability of the miniaturized RFID antenna. The effect of the polymer matrix composite (PMC) material on the antenna parameters such as gain, bandwidth, and return loss is analyzed and realized that improvement in bandwidth and perfection in impedance matching can be further accomplished by employing fractal structure. It is also discovered that the thermal properties affect the impedance and operating frequencies, thus enabling multilayer PMC deploying fractal structured RFID antennas to be used for many applications such as logistics, aerospace, biomedical, and mining.

show abstract

“…From the database of food permittivity, we define the contamination time and corresponding permittivity as a physical factor of the simulation model. Next, we use antenna structures sensitive enough for the design of RFID sensing tags for food-quality detection inspired from related works [14][15][16][17][18][19][20]. The integration of sensing capability of the proposed antenna structures was executed on a 3D EM simulator (CST Microwave Studio ® ) to get the desired read-range and radiation pattern.…”

Section: Simulation and Designmentioning

confidence: 99%

“…The simulation parameters were imported into CST Microwave Studio ® as detailed in figure 4. From the related literature and our executed works [14][15][16][17][18][19][20], some proposed structures of transformed dipole antenna were applied for the design of the sensing tags. As is known, the classical dipole is always sensitive to the environment it is embedded in, but the structure of the classic dipole with the dimensions of around half a wavelength (around 16.7 cm at UHF band) is not feasible for practical applications.…”

Section: Simulation and Designmentioning

confidence: 99%

Development of novel wireless sensor for food quality detection

Nguyen

Lam

et al. 2015

Adv. Nat. Sci: Nanosci. Nanotechnol.

View full text Add to dashboard Cite

In this paper we present a wireless sensor for the monitoring of food quality. We integrate sensing capability into ultrahigh frequency (UHF) radio-frequency identification (RFID) tags through the relationship between the physical read-range and permittivity of the object we label with the RFID tags. Using the known variations of food permittivity as a function of time, we can detect the contamination time at which a food product becomes unacceptable for consumption based on the measurement of read-range with the as-designed sensing tags. This low-cost UHF RFID passive sensor was designed and experimentally tested on beef, pork, and cheese with the same storage conditions as in supermarkets. The agreement between the experimental and simulation results show the potential of this technique for practical application in food-quality tracking.

show abstract

Improving radiation characteristics of UHF RFID antennas by zigzag structures

Cited by 11 publications

References 7 publications

The situation of pre-hospital emergency care through traumatic patients have been admitted to emergency department of Viet Duc University Hospital in 2023

The situation of pre-hospital emergency care through traumatic patients have been admitted to emergency department of Viet Duc University Hospital in 2023

[Retracted] Characterization of Composite RFID Antennas Based on Thermal Properties: A Survey

Development of novel wireless sensor for food quality detection

Contact Info

Product

Resources

About