Abstract:Purpose
The purpose of this manuscript is to present a novel, compact and ultra-thin “3”-shaped monopole antenna for wireless operations in the laptop computer. The thickness of the antenna is only 0.2 mm and is designed using only a pure copper strip of size 17.5 × 6 mm2.
Design/methodology/approach
The simple structure of the proposed antenna consists of two monopole radiating strips, namely, AC and CD and an open-ended rectangular tuning stub BE of length 9mm.
Findings
This structure inspires two resona… Show more
“…19 a, b, the simulated | S 11 | and | S 22 | are less than − 6 dB across the operating frequency band, independent of α. The results are consistent with 43 , indicating that the angle (α) of the laptop model has no impact on the impedance bandwidth of the antenna. In Fig.…”
Section: Parametric Studysupporting
confidence: 80%
“…The equivalent circuit model consists of a series RLC , three parallel RLC circuits, and a series LC component. The initial values of the equivalent circuit elements are calculated by 43 , and the optimized component values are determined by using ADS software. Figure 7 Equivalent circuit model of the third-generation single-element antenna.…”
This research proposes a broadband unidirectional twin-element multiple-input-multiple-output (MIMO) antenna scheme for mid-band 5G and WLAN applications. The twin-element antenna scheme comprises two single-element antennas, and each single-element antenna consists of a T-shaped hemispherical feeding patch, left- and right-arm radiating patches, and a conjoined triangular ground plane. The twin-element MIMO antenna scheme is integrated with a laptop model functioning as the reflector. The measured impedance bandwidth (|S11|, |S22|≤ − 6 dB) are 55.32%, covering 3.4–6.0 GHz, and the measured mutual coupling (|S12|) is less than − 15 dB. The measured gain at the center frequency (4.5 GHz) is 4.585 dBi. Besides, the measured xz- and yz-plane cross-polarization levels are below − 25 dB and − 15 dB, respectively. The half-power beamwidth (HPBW) in the xz-plane at 3.5, 4.5, and 5.5 GHz are 99°, 92.8°, and 84.2°, and the corresponding HPBW in the yz-plane are 102°, 78°, and 102°. The measured xz- and yz-plane back lobe levels are below − 15 dB across the entire operating frequency band (3.5–5.5 GHz). The radiation pattern of the twin-element MIMO antenna scheme is of unidirectionality. Furthermore, the envelope correlation coefficient and diversity gain of the twin-element antenna scheme are < 0.001 and > 9.99 dB, respectively. The proposed broadband unidirectional twin-element MIMO antenna scheme is thus operationally suitable for mid-band 5G/WLAN communication systems. Essentially, this research is the first to propose a broadband twin-element MIMO antenna scheme for mid-band 5G/WLAN applications.
“…19 a, b, the simulated | S 11 | and | S 22 | are less than − 6 dB across the operating frequency band, independent of α. The results are consistent with 43 , indicating that the angle (α) of the laptop model has no impact on the impedance bandwidth of the antenna. In Fig.…”
Section: Parametric Studysupporting
confidence: 80%
“…The equivalent circuit model consists of a series RLC , three parallel RLC circuits, and a series LC component. The initial values of the equivalent circuit elements are calculated by 43 , and the optimized component values are determined by using ADS software. Figure 7 Equivalent circuit model of the third-generation single-element antenna.…”
This research proposes a broadband unidirectional twin-element multiple-input-multiple-output (MIMO) antenna scheme for mid-band 5G and WLAN applications. The twin-element antenna scheme comprises two single-element antennas, and each single-element antenna consists of a T-shaped hemispherical feeding patch, left- and right-arm radiating patches, and a conjoined triangular ground plane. The twin-element MIMO antenna scheme is integrated with a laptop model functioning as the reflector. The measured impedance bandwidth (|S11|, |S22|≤ − 6 dB) are 55.32%, covering 3.4–6.0 GHz, and the measured mutual coupling (|S12|) is less than − 15 dB. The measured gain at the center frequency (4.5 GHz) is 4.585 dBi. Besides, the measured xz- and yz-plane cross-polarization levels are below − 25 dB and − 15 dB, respectively. The half-power beamwidth (HPBW) in the xz-plane at 3.5, 4.5, and 5.5 GHz are 99°, 92.8°, and 84.2°, and the corresponding HPBW in the yz-plane are 102°, 78°, and 102°. The measured xz- and yz-plane back lobe levels are below − 15 dB across the entire operating frequency band (3.5–5.5 GHz). The radiation pattern of the twin-element MIMO antenna scheme is of unidirectionality. Furthermore, the envelope correlation coefficient and diversity gain of the twin-element antenna scheme are < 0.001 and > 9.99 dB, respectively. The proposed broadband unidirectional twin-element MIMO antenna scheme is thus operationally suitable for mid-band 5G/WLAN communication systems. Essentially, this research is the first to propose a broadband twin-element MIMO antenna scheme for mid-band 5G/WLAN applications.
“…Several antenna design techniques that exhibit multiband or wideband operations have been reported in the literature [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] for wireless applications. Amid these designs, dielectric resonator antennas (DRAs) are very popular as they offer high dielectric strength and no inherent conductor loss, which results in better radiation efficiency.…”
Section: Introductionmentioning
confidence: 99%
“…To reduce the manufacturing complexity, [10,11] present a simple monopole antenna operating in the 2.4/5 GHz WLAN bands with dimensions of 44 × 33 mm 2 and 42 × 30 mm 2 , respectively. As wireless devices such as smartphones, laptops, notebooks, and tablets play a very crucial role for the end-user in day to day life, several antennas designed for laptop/portable devices are reported in [12][13][14][15][16]. Unfortunately, all the antennas reported above are unable to cover the frequency band of Wi-Fi 6.…”
A wideband coplanar waveguide (CPW) fed monopole antenna designed for Wi-Fi 5 and Wi-Fi 6 applications is proposed. The proposed antenna (main radiator) has a designed footprint of only 20 × 8.7 × 0.4 mm 3 , which is composed of an oval-shaped ring radiator with three concentric rings and a double-T structure loaded with a J-shaped slot. The main novelty of this work is that the measured wideband operation of 34.5% (5.15-7.29 GHz) is contributed by only a single resonance at 6.2 GHz, conforming to the bandwidth requirement of and . Furthermore, the proposed antenna also exhibits good radiation characteristics, including a gain around 2.25 dBi, a radiation efficiency above 80%, a total efficiency above 70%, and omnidirectional radiation patterns with a low magnitude of cross polarization throughout the bands of interest.
“…Kulkarni designed triple folded monopole antenna for laptop devices and ultrathin antenna model for communication applications [11,12]. Kurvinen and Li H proposed antenna models for mmwave communication and Sub 6 GHz communication applications [13,14].…”
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
