Design of Koch Fractal Circularly Polarized Antenna for Handheld UHF RFID Reader Applications

Farswan, Akanksha; Gautam, A. K.; Kanaujia, Binod Kumar; Rambabu, Karumudi

doi:10.1109/tap.2015.2505001

Cited by 98 publications

(50 citation statements)

References 14 publications

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“…A microstrip‐line‐fed microstrip slot antenna has also shown wide‐band and UWB performance . Some of them reported the UWB antenna with CP but they have a narrow 3‐dB axial ratio BW . The comparative lists for the performance of some similar antennas and the proposed antenna are shown in Table .…”

Section: Introductionmentioning

confidence: 99%

Circularly polarized hexagonal ring microstrip patch antenna with asymmetrical feed and DGS

Maurya

Kanaujia²,

Gautam³

et al. 2019

Micro & Optical Tech Letters

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A novel circularly polarized hexagonal ring microstrip patch antenna with asymmetrical feed is proposed for S, C, and X‐band applications. A semi‐arc‐shaped slot is integrated into the ground plane, and the hexagonal ring is tilted by an angle of 25° with respect to the microstrip‐line feed (asymmetric), which creates a circularly polarized UWB. The simulation of the proposed antenna is carried out using Ansoft HFSS v.13 and the measurement is done with an N5230A vector network analyzer. The simulated and the measured results of our proposed antenna are in good agreement. The successful implementation of the asymmetrical feed shows a broader impedance bandwidth of 134% (B.W = 9.55 GHz) from 2.34 to 11.89 GHz at 7.12 GHz of the center frequency. The 3‐dB axial ratio B.W is 2.8% (7.1‐7.3 GHz) and 21.8% (9.8‐12.2 GHz) in the UWB range. The average gain of the proposed antenna is 4.15 dBi. Good RHCP waves are also found in the x‐z and y‐z planes. The proposed antenna can be effectively used in S, C, and X‐band applications.

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Section: Introductionmentioning

confidence: 99%

Circularly polarized hexagonal ring microstrip patch antenna with asymmetrical feed and DGS

Maurya

Kanaujia²,

Gautam³

et al. 2019

Micro & Optical Tech Letters

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“…ISM 433 MHz frequency band is commonly used for low data-rate applications, such as remote control engine start systems, remote keyless entry (RKE) systems, and wireless sensor network (WSN) [1][2][3][4]. The most commonly used antennas for these wireless applications are of the helical type because of their small size and good efficiency.…”

Section: Introductionmentioning

confidence: 99%

A High-Efficiency Compact Planar Antenna for ISM Wireless Systems

Zhou

Cao

Cheng

et al. 2017

International Journal of Antennas and Propagation

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A novel high-efficiency compact planar antenna at 433 MHz with minimized size and low-cost and easy to integrate into the ISM wireless applications is designed, fabricated, and measured. Capacitive strips that are formed by cutting inter-digital slots and the meander lines on both sides are introduced to greatly reduce the antenna size yet maintain the high efficiency. The proposed antenna has a simple planar structure and occupies a small area (i.e., 45 × 30 mm 2 ). This novel electrically small antenna can be operated well without any lumped elements for impedance matching. Details of the antenna design and experimental results are presented and discussed.

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“…Specifically, the compact circularly polarized antenna for the application of UHF RFID handheld reader has recently been developed quickly [10][11][12][13][14][15][16][17][18][19][20]. Those antennas are realized by using asymmetriccircular shaped slotted microstrip, cross-shaped slotted microstrip [10,11,13], crossed dipoles with different shapes [14][15][16], four meandered monopoles [17], X-shaped slotted square-patch with cross-strip proximity-fed technique [18], and Koch fractal geometry [20].…”

Section: Introductionmentioning

confidence: 99%

“…Those antennas are realized by using asymmetriccircular shaped slotted microstrip, cross-shaped slotted microstrip [10,11,13], crossed dipoles with different shapes [14][15][16], four meandered monopoles [17], X-shaped slotted square-patch with cross-strip proximity-fed technique [18], and Koch fractal geometry [20]. Most of those designs realize circular polarization by integrating a four-way phase shift network.…”

Section: Introductionmentioning

confidence: 99%

Compact Uhf Rfid Handheld Reader Antenna and Array Based on Resonant Quadrifilar Spiral Structure

Zhao¹,

Huang²,

Li³

et al. 2016

PIER C

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Abstract-In this paper, a compact circularly polarized antenna based on a resonant quadrifilar spiral structure for the application of UHF RFID handheld reader is proposed and demonstrated experimentally. To reduce antenna size and improve impedance matching, the original resonant arms are revised by bending inverted-F structures and printing them on dielectric substrates, and the four arms are fed by a four-way phase shift network. Such an antenna indicates stable circular polarization performance and wide beamwidth. The gain bandwidth (> 2 dBic) can cover the frequency band from 902 MHz to 928 MHz, which is suitable for most of the popular UHF RFID systems in the world. Moreover, the 1×4 array and 2×2 array based on previously demonstrated antenna unit are numerically investigated. The array performances, including the gain, beam scanning and low side-lobe are discussed.

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Design of Koch Fractal Circularly Polarized Antenna for Handheld UHF RFID Reader Applications

Cited by 98 publications

References 14 publications

Circularly polarized hexagonal ring microstrip patch antenna with asymmetrical feed and DGS

Circularly polarized hexagonal ring microstrip patch antenna with asymmetrical feed and DGS

A High-Efficiency Compact Planar Antenna for ISM Wireless Systems

Compact Uhf Rfid Handheld Reader Antenna and Array Based on Resonant Quadrifilar Spiral Structure

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