A broadband circularly polarized cavity-backed Archimedean spiral array antenna for C-band applications

Siahcheshm, A.; Nourinia, Javad; Ghobadi, Ch.; Karamirad, Mohsen; Mohammadi, Bahman

doi:10.1016/j.aeue.2017.08.052

Cited by 21 publications

(5 citation statements)

References 10 publications

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“…Therefore, these tradeoffs have to be factored in to obtain the optimized antenna performance and practicality. Although there are other published works on broadband antenna [45]- [47] that are able to simultaneously harvest more RF power from a wide frequency band, these reported antennas are relatively bulky and are not feasible to be embedded ubiquitously into portable devices, especially WSNs.…”

Section: A Antennamentioning

confidence: 99%

Wide Power Dynamic Range CMOS RF-DC Rectifier for RF Energy Harvesting System: A Review

2022

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This article investigates the latest research outcomes on the wide power dynamic range (PDR) CMOS RF-DC rectifier for on-chip radio frequency energy harvesting (RFEH) system as a viable approach to extend the high power conversion efficiency (PCE) operating range which is limited by the varying nature of the available far-field RF power. The significance of enhancing the rectifier's PDR is that it offers a more reliable operation of RFEH in real-life applications. Therefore, this review seeks to navigate the research and development focus of the RFEH system towards extending the PDR of the CMOS RF-DC rectifier by providing analysis of the effect of state-of-the-art PDR extension techniques and their design tradeoffs. The review encapsulates the transmission of the RF power, a brief overview of the RFEH front-end circuit, and a comprehensive review of the CMOS rectifier design focusing on PDR. At the end of this article, we discuss the future design aspects to address the limitation of the RFEH system. Recent research shows that extending the rectifier's PDR will enhance the overall performance of the RFEH system.INDEX TERMS CMOS rectifier, power conversion efficiency (PCE), power dynamic range (PDR), RF energy harvesting, RF power transmission.

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Section: A Antennamentioning

confidence: 99%

Wide Power Dynamic Range CMOS RF-DC Rectifier for RF Energy Harvesting System: A Review

2022

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“…The dual feed MIMO structures are more compact and light in weight in comparison with the other multiport structures and it becomes a strong candidate toward future 5G wireless/mobile systems for actual implementation purposes. Various geometries of slot antennas are available in the present literature to obtain broadband CP such as crescent-shaped slot antennas [5], microstrip line slot [6, 7], substrate integrated waveguide slot [8], monopole slot [9], spiral-shaped slot [10], and corner truncated slot [11]. The antenna consists of non-uniform width elliptical slot at the bottom ground side and unequal length feed-line structure at the top side of substrate to obtain CP.…”

Section: Introductionmentioning

confidence: 99%

Broadband circularly polarized 2 × 2 MIMO array for midband 5G wireless applications

Gunjal

Kshirsagar

2022

Int. J. Microw. Wireless Technol.

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The novel compact size orthogonally fed 2 x 2 Multiple Input and Multiple Output (MIMO) array antenna for mid-band Fifth Generation (5G) wireless application is presented. The antenna configuration consists of diamond-shaped patches employed at the top of substrate. The V-shaped common ground slot structure is employed at the bottom of substrate. A broadband circular polarization is achieved by simply combining two circular polarization modes obtained from ground V slot and top patch feed structure. Mainly, the impedance bandwidth (IBW) and gain are enhanced by protruding slots on ground and cutting edges of patches. The measured result shows that 1.70 – 8.00 GHz (6.30 GHz) of IBW, 8.8 dBic of peak gain, and 3 dB axial ratio bandwidth from 1.81 – 3.87 GHz (2.06 GHz) are obtained. The proposed antenna performances are experimentally validated by fabricating and testing it for measured result analysis without using power divider.

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“…Conventional antennas having narrower impedance bandwidth, which can be further improved by the slot mechanism and orthogonal feeding structures, give rise to broadband CP radiation. Various antennas have been used for broadband CP generation, which are studied in the literature such as microstrip line ground slot antennas [9], Substrate Integrated Waveguide (SIW) ground slot antennas [10], planar monopole slot antennas [11], spiral slot antennas [12], and corner truncated slot antennas [13,14]. Semi-arc shaped radiating strip lines are placed orthogonally to achieve easy circular polarization.…”

Section: Introductionmentioning

confidence: 99%

Broadband Asymmetrically Fed Circularly Polarized Slot Antenna for Mid-Band 5g Smartphone Applications

Gunjal¹,

Kshirsagar²

2021

PIER C

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A compact asymmetrically fed U shape slot antenna for 5G smartphone application is presented. The antenna consists of two major components that are responsible for generating broadband circular polarization (CP) (i) the microstrip patch feed structure employed at the top plane and (ii) U shape slot mechanism employed at the ground plane. The U shape ground radiator is approximately half wavelength slot mode which is responsible for lower band CP operation. The planar monopole structure is formed by the microstrip line feed. This planar monopole is a quarter wavelength mode used for achieving higher band CP operation. By combining these two CP modes generated by U shape slot and port-line structure, a broadband CP antenna is designed. The circular polarization is achieved with lesser complexity in the design structure. To get the practical validation of the simulated design, it is then fabricated and tested for measured results without using power divider. The measured axial ratio bandwidth covers from 2.00 GHz to 6.50 GHz (4.50 GHz), and the −10 dB Impedance Bandwidth (IBW) covers from 1.66 GHz to 8.10 GHz (6.44 GHz) respectively. The isolation between two asymmetric port-lines is greater than 14.5 dB within 3-dB axial ratio bandwidth.

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A broadband circularly polarized cavity-backed Archimedean spiral array antenna for C-band applications

Cited by 21 publications

References 10 publications

Wide Power Dynamic Range CMOS RF-DC Rectifier for RF Energy Harvesting System: A Review

Wide Power Dynamic Range CMOS RF-DC Rectifier for RF Energy Harvesting System: A Review

Broadband circularly polarized 2 × 2 MIMO array for midband 5G wireless applications

Broadband Asymmetrically Fed Circularly Polarized Slot Antenna for Mid-Band 5g Smartphone Applications

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