Miniaturization of an UHF RFID reader antenna using an artificial magneto‐dielectric

Chung, Haeil; Lee, Mi Kyung; Choi, Jaehoon

doi:10.1002/mop.25423

Cited by 15 publications

(13 citation statements)

References 4 publications

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“…Table 3 summarizes the detailed comparison regarding the antenna size and measured performance between the proposed antenna and other antennas, where λ 0 denotes the free-space wavelength of the frequency with minimum AR, RLBW denotes the return loss bandwidth, and ARBW denotes the AR bandwidth. Although those antennas designed in [9][10][11] have slightly smaller overall sizes, their operating frequency bandwidths are much narrower than that of the proposed antenna. The proposed antenna has similar overall size and measured performance to those of the antenna presented in [12].…”

Section: Resultsmentioning

confidence: 99%

“…Although asymmetric slits and cross-shaped slots can be introduced to realize miniaturization [9,10], the measured 3-dB axial ratio (AR) bandwidths are usually narrow, which are 0.5% and 0.7%, respectively. A compact UHF RFID patch antenna was proposed based on an artificial magneto-dielectric material [11]. The antenna has an overall size of 0.303λ 0 × 0.303λ 0 × 0.01λ 0 with a measured peak gain of −3.75 dBic over the frequency band.…”

Section: Introductionmentioning

confidence: 99%

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Miniaturized Single-Feed Cross-Aperture Coupled Circularly Polarized Microstrip Patch Antenna

Li¹,

Jian-ying²,

Zhang³

et al. 2016

PIER C

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Abstract-A novel miniaturized single-feed cross-aperture coupled circularly polarized (CP) microstrip patch antenna loaded by four identical shorting strips is proposed and discussed. Each shorting strip underneath the edges of the radiating patch is connected to the ground plane via an array of three identical and equidistant shorting pins. With the assistance of the capacitance offered by the radiating patch and the shorting strips, and the inductance induced by the shorting pins, the patch size and overall size of the proposed antenna have been significantly reduced by 75% and 69%, respectively, compared with the conventional antenna. An antenna prototype with an overall size of 50 mm × 50 mm× 7.548 mm (0.317λ 0 × 0.317λ 0 × 0.048λ 0 ) and a patch size of 29.43 mm × 27.85 mm (0.186λ 0 × 0.176λ 0 ) has been fabricated and measured, which shows a measured 10-dB return loss bandwidth of 92 MHz (4.76%) from 1.886 to 1.978 GHz with a maximum right-handed CP (RHCP) gain of 4.9 dBic. The measured 3-dB axial ratio (AR) bandwidth is 28 MHz (1.46%) from 1.899 to 1.927 GHz with a 3-dB AR beamwidth of more than 140 • across the operating bandwidth.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Miniaturized Single-Feed Cross-Aperture Coupled Circularly Polarized Microstrip Patch Antenna

Li¹,

Jian-ying²,

Zhang³

et al. 2016

PIER C

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“…Since down the presence e normally linear (CP) radiation at ake the process of ent [5,6]. The CP linearly polarized de and forming the relation in phase nes the sense of axial ratio (AR) magnitude of the ed [7,8]. ate.…”

Section: Introductionmentioning

confidence: 99%

A circularly polarized antenna for UHF RFID reader

Phatra

Krachodnok

2014

2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technolo

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This paper presents the desig polarized (CP) antenna for Radio Freque (RFID) reader using the ring slot microstrip High Frequency (UHF) band. The propose consists of a ring slot microstrip antenna with placed on a FR4 substrate ( r ε = 4.5). The prot fabricated with a total size of 100 × 100 × 1.6 m measured impedance matching band of 830-9 measured rotating linear based circularly p patterns. Keywords-cicularly polarized antenna; a r antenna; UHF RFID reader.I.

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“…To reduce the size of the antenna with wide 3-dB beamwidth, several techniques have been employed and studied [9][10][11][12][13][14]. A new hybrid DRA has been investigated in [9], and the design has a side length of 0.73λ and a 3-dB beamwidth greater than 750.…”

Section: Introductionmentioning

confidence: 99%

“…However, the side length of the reflector is almost 0.55λ. It is noted that all these antennas [9]- [14] have narrow bandwidth.…”

Section: Introductionmentioning

confidence: 99%

A wideband circularly polarized antenna with pattern improvement

Zhang

Huang

et al. 2014

Proceedings of 2014 3rd Asia-Pacific Conference on Antennas and Propagation

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A novel wideband circularly polarized (CP) microstrip antenna with pattern improvement is proposed. Four vertical conductive walls surrounded with the radiation patch and four metal isosceles triangle patches located at top of the radiation patch are employed for widening beamwidth. To achieve the miniaturization of the antenna, four slots etched along the diagonals of radiation patch and the folded ground plane structure are used due to extending the current path. In addition, by introducing an electromagnetically coupled method and a compact broadband phase shifting network, the antenna achieves a wide impedance bandwidth for VSWR≤1.5 ranging from 1.1 to 1.72 GHz and a 3-dB AR bandwidth from 1.1 to 1.7 GHz.

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Miniaturization of an UHF RFID reader antenna using an artificial magneto‐dielectric

Cited by 15 publications

References 4 publications

Miniaturized Single-Feed Cross-Aperture Coupled Circularly Polarized Microstrip Patch Antenna

Miniaturized Single-Feed Cross-Aperture Coupled Circularly Polarized Microstrip Patch Antenna

A circularly polarized antenna for UHF RFID reader

A wideband circularly polarized antenna with pattern improvement

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