CPW-Fed Penta Band Monopole Antenna for Multiservice Wireless Applications

Kumar, Raj; Kamatham, Yedukondalu; Peddakrishna, Samineni; Gaddam, Ajitha

doi:10.46604/aiti.2021.8434

Cited by 4 publications

(3 citation statements)

References 19 publications

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“…To support sub 6 GHz dual-band operations at 3300–3600 MHz and 4800–5000 MHz, an asymmetric T-shaped feed-in monopole with a 0.5 pF chip capacitor is used to excite the closed-slot antenna and trigger one-half and full wavelength resonance modes. The current distribution is varied due to a slight modification in the length of the central T-shaped stub [ 29 ]. The second characteristic of the proposed design is that the configuration distance between the two slots is only 5 mm, to form a six-antenna system in the same and parallel direction.…”

Section: Introductionmentioning

confidence: 99%

Compact Sub 6 GHz Slot Multiantenna System for 5G Laptops

Chen

Cheng

et al. 2023

Micromachines

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A sub 6 GHz dual-band closed-slot multiantenna system for 5G laptops is proposed in this paper. It was installed in a clearance space, with dimensions og 217 × 3 mm2 and 1 mm away from the upper edge of the screen ground plane. The dimensions of the clearance space were the same as those of a multisystem consisting of six antennas. The dimensions of the single closed-slot antenna were 32 × 3 mm2 (0.368 λ × 0.034 λ, where λ equals the free-space wavelength of 3450 MHz. The antenna was coupled to an asymmetric T-shaped feed-in section equipped with a chip capacitor for exciting one-half and full wavelength resonance modes of the closed-slot to encompass sub 6 GHz 3300–3600 MHz and 4800–5000 MHz dual-band operations. The design of the antenna features a long and straight slot to generate the high-order mode of the closed slot in the high-frequency (4800–5000 MHz) band (not the low-frequency (3300–3600 MHz) multiplier band). Its structure is simple, and the width of its slot is only 3 mm. The antennas were arranged to be 5 mm apart in the same direction and in parallel to form a six-antenna system in order to utilize the weak electric fields located at the two closed ends of the closed-slot structure when the closed slot was excited. It showed excellent envelope correlation coefficients (ECCs) and isolation performance without the installation of isolation elements. The measured fractional bandwidth of the antenna was 10.15% and 6.73% at the center frequencies of 3450 MHz and 4900 MHz, respectively. Its measured isolation was always over 10 dB, and the efficiency was between 46% and 76%. The ECCs of the system calculated from the measured complex E-field radiation pattern were all below 0.2, which means that it is ideal for use in laptop devices with a high screen-to-body ratio and a metal back cover.

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Section: Introductionmentioning

confidence: 99%

Compact Sub 6 GHz Slot Multiantenna System for 5G Laptops

Chen

Cheng

et al. 2023

Micromachines

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“…Wireless communication has become an integral part of modern society, and as the demand for wireless services continues to grow, industries are seeking ways to provide reliable and efficient wireless communication across multiple frequency bands [1][2][3][4]. Multiband technology has emerged as a solution to this problem, as it allows for the use of multiple frequency bands simultaneously, thereby improving spectral efficiency, increasing channel capacity, and reducing multipathing.…”

Section: Introductionmentioning

confidence: 99%

Pentaband Dual-Polarized Antenna for Multiservice Wireless Applications

Ushasree

Agarwal

2023

Computation

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This paper presents a novel design for and an experimental study of a dual-polarized quad-port MIMO antenna. The design achieves resonance at five distinct frequency bands with reduced mutual coupling. The design includes a single annular ring slot, four truncated rectangular corners, and a truncated aperture to improve resonance behavior. The design is then extended to a four-port MIMO antenna by including a ground-plane slit to enhance isolation between antenna elements at the center resonance band. The antenna achieves resonances at 5 distinct bands, ranging from 1.5 to 8.4 GHz, with significant mutual coupling reductions. The resonances of the quad-port pentaband MIMO antenna are achieved at 1.55 GHz (1.5–1.65 GHz), 2.5 GHz (2.4–2.7 GHz), 5.2 GHz (5–5.85), 7.3 GHz (7.1–7.4), and 8.15 GHz (7.9–8.4), with respective mutual coupling reductions of 27 dB, 37 dB, 21 dB, 29 dB, and 21 dB. Additionally, the 3 dB axial ratio bandwidth (ARBW) is observed at 6.5% (1.5–1.6 GHz) and 15% (2.4–2.7 GHz) in 2 distinct bands, and the envelope correlation coefficient and diversity gain are calculated within the specified band range. Experimental measurements of the prototype for the quad-port antenna are conducted, with excellent agreement found between the results and the simulations.

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“…Microstrip antennas are widely used in wireless communication systems due to their compact size, low profile, ease of integration with printed circuit boards, and capability to integrate with monolithic microwave integrated circuits [1][2]. In recent years, there has been growing interest in using microstrip antennas for radio frequency (RF) energy harvesting applications, particularly for ultra-wideband (UWB) systems.…”

Section: Introductionmentioning

confidence: 99%

A Co-Planar Waveguide Ultra-Wideband Antenna for Ambient Wi-Fi RF Power Transmission and Energy Harvesting Applications

Nuraiza Ismail,

Ermeey Abd Kadir

2023

Int. j. eng. technol. innov.

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This study proposes an ultra-wideband antenna for ambient radio frequency (RF) energy harvesting applications. The antenna is based on a co-planar waveguide (CPW) transmission line and incorporates a rectangular slot as an antenna harvester. The proposed antenna utilizes an evolutionary design process to achieve impedance matching of the 50 Ω CPW feeding line over the desired frequency bands. A parametric study investigates CPW elements and rectangular slot size. The harvester antenna is then connected to the primary rectifier circuit of the voltage doubler to examine the signal characteristics. The antenna covers the Industry, Science, and Medicine (ISM) Wi-Fi bands of 2.45 GHz and 5 GHz, achieving a realized gain of 3.641 dBi and 4.644 dBi at 2.45 GHz and 5 GHz, respectively. It exhibits a relatively broad frequency ranging from 2.16 GHz to 6.32 GHz, covering the ultra-wideband fractional bandwidth (FBW) of 105%.

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CPW-Fed Penta Band Monopole Antenna for Multiservice Wireless Applications

Cited by 4 publications

References 19 publications

Compact Sub 6 GHz Slot Multiantenna System for 5G Laptops

Compact Sub 6 GHz Slot Multiantenna System for 5G Laptops

Pentaband Dual-Polarized Antenna for Multiservice Wireless Applications

A Co-Planar Waveguide Ultra-Wideband Antenna for Ambient Wi-Fi RF Power Transmission and Energy Harvesting Applications

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