A Practical Approach to Robust Design of a RFID Triple-Band PIFA Structure

Ko, Jae-Hyeong; Kim, Koon-Tae; Kim, Dong-Hun; Lee, Hyang-Beom; Kim, Hyeong-Seok

doi:10.1109/tmag.2010.2045748

Cited by 13 publications

(4 citation statements)

References 7 publications

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“…In recent years, it has also been used to design antennas. However, the solutions obtained by TM are highly likely to fall into the local minima, as the search boundary condition in TM is very limited [14,15].…”

Section: Introductionmentioning

confidence: 99%

Robust Design of 3D-Printed 6–18 GHz Double-Ridged TEM Horn Antenna

et al. 2018

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A robust design of a 3D-printed 6–18 GHz double-ridged TEM horn antenna is proposed in this paper. The designed TEM horn antenna has two parts: an adaptor and a horn aperture. The adaptor is realized using a double-ridged waveguide to extend the operating bandwidth of the dominant mode (TE10 mode). Meanwhile, the horn aperture section is implemented in an exponentially tapered configuration to match the impedance of the double-ridged waveguide with the intrinsic impedance. The performance of the initially designed antenna shows that the reflection coefficient and gain levels are less than −13 dB and greater than 5.5 dBi within the 6–18 GHz band, respectively. The initial design was well done, but the noise factors that may occur during the manufacturing process were not taken into account. To design an antenna considering these noise factors, the parameters of the initial design are optimized by a novel robust design method also proposed in this paper. The robustness of the antenna optimized by the proposed method is approximately 12.4% higher than that of the initial antenna. The validity of the proposed method was tested by fabricating the antenna. A prototype of the optimized antenna with the proposed robust design method is fabricated using a 3D printer with a stereolithographic apparatus attached, and the surface of the frame is covered by a nano-silver plating. The measured results of the fabricated antenna are in good agreement with the simulation results over the operating band. The measured −10 dB reflection coefficient bandwidth of the antenna can cover 6–18 GHz. In addition, the measured gain ranges from 4.42 to 10.75 dBi within the 6–18 GHz band.

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Section: Introductionmentioning

confidence: 99%

Robust Design of 3D-Printed 6–18 GHz Double-Ridged TEM Horn Antenna

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Moreover, a method which is realized on the basis of an orthogonal array (OA) can dramatically reduce the time required to design the antenna [3]. However, it is very difficult to find a global optimum using only TM because an OA consists of a limited number and limited level sizes of design variables [4]. In order to resolve the drawbacks of TM, hybrid methods have been introduced [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Robust Optimization for the Design of a Smartphone Metal Frame Antenna

Lee

Hwang

et al. 2018

International Journal of Antennas and Propagation

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Hybrid robust optimization that combines a genetical swarm optimization (GSO) scheme with an orthogonal array (OA) is proposed to design an antenna robust to the tolerances arising during the fabrication process of the antenna in this paper. An inverted-F antenna with a metal frame serves as an example to explain the procedure of the proposed method. GSO is adapted to determine the design variables of the antenna, which operates on the GSM850 band (824-894 MHz). The robustness of the antenna is evaluated through a noise test using the OA. The robustness of the optimized antenna is improved by approximately 61.3% relative to that of a conventional antenna. Conventional and optimized antennas are fabricated and measured to validate the experimental results.

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“…However, only two of the three operating frequency bands in the antennas in [12, 13] are RFID bands: 902–928 MHz and 2.4 GHz. The tri-band antennas in [14, 15] work at 433 MHz, 902–928 MHz, and 2.4 GHz, which are not in the bands of interest here. Antennas operating at 902–928 MHz, 2.4 GHz, and 5.8 GHz have been reported [16, 17], but the antenna in [16] has a low return loss of 6 dB in the 860–960 MHz band, while the antenna in [17] has a large size of 80 × 80 × 1.6 mm 3 , which is almost three times the volume of the antenna proposed here.…”

Section: Introductionmentioning

confidence: 99%

A miniature tri-band RFID reader antenna with high gain for portable devices

Wang

2016

Int. J. Microw. Wireless Technol.

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This paper presents a miniature monopole reader antenna for tri-band radio frequency identification (RFID) portable devices. The proposed antenna operates at the main RFID frequencies and can alleviate and compensate for the shortcomings of a single-band antenna. An additional rectangular stub couples with the bent monopole antenna, allowing the latter to resonate at the RFID bands at 902–928 MHz, 2.4–2.48 GHz, and 5.725–5.875 GHz. By bending the feedline, the dimensions of the miniature antenna are reduced to 115.5 × 20 × 1.6 mm3, facilitating its integration into portable devices. The measured bandwidths(return loss < −10 dB) of the proposed antenna are 677, 580, and 250 MHz in the three operating bands, 883–1560 MHz, 2.31–2.89 GHz, and 5.65–5.9 GHz, respectively, with high-gain characteristics. An experimental study of a fabricated prototype of the optimized antenna is performed, and the results verify its good performance.

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A Practical Approach to Robust Design of a RFID Triple-Band PIFA Structure

Cited by 13 publications

References 7 publications

Robust Design of 3D-Printed 6–18 GHz Double-Ridged TEM Horn Antenna

Robust Design of 3D-Printed 6–18 GHz Double-Ridged TEM Horn Antenna

Hybrid Robust Optimization for the Design of a Smartphone Metal Frame Antenna

A miniature tri-band RFID reader antenna with high gain for portable devices

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