Triple-Band Unidirectional Circularly Polarized Hexagonal Slot Antenna With Multiple L-Shaped Slits

Baek, Jong Gyun; Hwang, Keum Cheol

doi:10.1109/tap.2013.2265216

Cited by 85 publications

(49 citation statements)

References 6 publications

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“…The conventional methods used to achieve this usually involve the introduction of carefully designed slits or stubs in the ground plane of the slot or the feed line. These slits and stubs help to modify the current distribution around the slot to generate 90° phase shifted orthogonal modes and hence, CP radiation . The antennas thus designed, offer dual bands of operation, but are of large size.…”

Section: Introductionmentioning

confidence: 99%

“…These slits and stubs help to modify the current distribution around the slot to generate 90 phase shifted orthogonal modes and hence, CP radiation. 1,2 The antennas thus designed, offer dual bands of operation, but are of large size. In Reference 3, an annular slot antenna was designed with CP capabilities and provided ARBWs of 0.9% and 0.6% at the two operating bands centered at 1.227 and 1.575 GHz.…”

Section: Introductionmentioning

confidence: 99%

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A corner expanded slot antenna loaded with copper strips for dual‐band circular polarization characteristics

Paul

Kandasamy

Sharawi

2019

Micro & Optical Tech Letters

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In this article, the design and implementation of a dual‐band circularly polarized (CP) microstrip line fed square slot antenna with compact size is proposed. The proposed CP antenna consists of a square slot antenna with a pair of symmetric rectangular extensions on opposite corners and loaded with an array of inclined and truncated rectangular copper strips. The square slot with diagonal extensions resonates at 2.24 to 2.62 GHz with a 3 dB axial ratio (AR) bandwidth of 15.7%. Besides, loading it with an array of inclined and truncated rectangular copper strips helps produce a resonance at higher band with CP. The higher band operates between 3.26 and 5.18 GHz and centered at 4.52 GHz, with a 3 dB AR bandwidth of 45.5%. The polarization sense and resonant frequency of the proposed antenna can be independently tuned depending on the position and dimensions of the slot and strips, respectively. The proposed antenna is fabricated and measured in terms of impedance bandwidth, axial ratio bandwidth, peak gain, and radiation efficiency. Good agreement between the simulations and measurements of the prototype is obtained.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A corner expanded slot antenna loaded with copper strips for dual‐band circular polarization characteristics

Paul

Kandasamy

Sharawi

2019

Micro & Optical Tech Letters

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“…Two substrate layers with an electromagnetically coupled low‐band patch in the middle layer and a probe‐fed dual‐band patch on the top layer resulted in a triple‐band CP antenna . Other reported approaches for a triple‐band CP antenna include adding three L‐shaped slit arms to a hexagonal slot fed by a simple tapered microstrip feeding line, or combining U‐, L‐, and I‐shaped strips to form a simple printed monopole antenna . In Ref ,.…”

Section: Introductionmentioning

confidence: 99%

A simple penta‐band circularly polarized cpw‐fed monopole‐patch antenna covering six commercial application bands

Tran

Park

2018

Micro & Optical Tech Letters

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This letter presents a very simple coplanar waveguide (CPW)‐fed penta‐band circularly polarized (CP) antenna for 1.6 GHz GPS, 3.45 GHz WiMAX, 2.45/5.3/5.8 GHz WLAN and 4.2 GHz radio altimeter applications. The antenna is composed of a monopole, a semi‐circular patch, and a slit etched in the ground plane. The final design with an overall size of 70 × 53 × 1.52 mm3 has yielded measured 3 dB axial‐ratio (AR) bandwidths of 9.7% (1.48‐1.63 GHz), 37.3% (2.38‐3.47 GHz), 5.1% (4.21‐4.43 GHz), 3.0% (5.25‐5.41 GHz), and 3.3% (5.69‐5.88 GHz). Measured −10 dB impedance bandwidths of the proposed antenna are 109.3% (1.31‐4.47 GHz) and 28.5% (5.05‐6.73 GHz) which fully cover all the AR bands.

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“…To reduce complexity and make the structure simple, multiband aerial is required. H-shape, U-shape, and hexagonal slots with slits have been used to implement triple-band antennas [15,16]. Many papers based on hexagonal patches with fractal geometry have been published, including the following:…”

Section: Introductionmentioning

confidence: 99%

Koch fractal-based hexagonal patch antenna for circular polarization

Gupta¹,

Mathur²

2017

Turk J Elec Eng & Comp Sci

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Abstract:The design and performance of an inset feed modified hexagonal patch antenna for possible applications in ultrawideband communication systems is reported. The inset feed hexagonal patch antenna is modified by introducing a fractal up to the second iteration. A right-angled isosceles triangular microstrip antenna is used in the Koch fractal structure on the edges. The proposed antenna is a combination of two standard fractal structures, i.e. Sierpinski and Koch. A rectangular defect in the ground has also been done. The antenna is simulated by applying CST Microwave Studio simulation software. The results are verified by fabricating the antenna and tested using a vector network analyzer.The developed design shows good matching with the feed network at frequencies of 3.1 GHz, 6.9 GHz, 7.3 GHz, 8.5GHz, and 9.1 GHz. The simulated peak gain of the antenna at resonant frequencies is 4.08 dB, 4.79 dB, 3.85 dB, 3.46 dB, and 3.01 dB. The antenna is fabricated on FR-4 substrate having size 30 × 35 × 1.59 mm 3 . It covers the S and X band range. It can be used for microwave applications as it is a part of the microwave spectrum, for wireless networking devices coming under IEEE standards. It can also be used for multimedia applications like mobile TV and satellite radio that use the S band as their frequency range and in home-based consumer electronics like microwave ovens, cordless phones, and wireless headphones. For higher ranges, i.e. in the X band, it can be used in radars, satellites, and military appliances.

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Triple-Band Unidirectional Circularly Polarized Hexagonal Slot Antenna With Multiple L-Shaped Slits

Cited by 85 publications

References 6 publications

A corner expanded slot antenna loaded with copper strips for dual‐band circular polarization characteristics

A corner expanded slot antenna loaded with copper strips for dual‐band circular polarization characteristics

A simple penta‐band circularly polarized cpw‐fed monopole‐patch antenna covering six commercial application bands

Koch fractal-based hexagonal patch antenna for circular polarization

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