Half‐mode SIW cavity antenna for tri‐band MIMO applications

Niu, Bing‐Jian; Tan, Jie-Hong

doi:10.1002/mop.32214

Cited by 13 publications

(15 citation statements)

References 17 publications

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“…Ref. [15] introduced the design of a single-layered HMSIW squared cavity-backed antenna that gives execution radiation in comparative full-mode SIW. The structure in [16] is a dual-frequency antenna using HMSIW for WLAN application.…”

Section: Related Workmentioning

confidence: 99%

Design and Implementation of Triple Band Half Mode Substrate Integrated Waveguide (HMSIW) Antenna with Compact Size

et al. 2021

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This study investigated structure strategies and exploratory scenarios for a half mode substrate integrated waveguide (HMSIW) antenna. The proposed antenna consists of three Hilbert cells, which are simulated by using CST programming. The antenna was manufactured with the realities of minor imperfections and high incorporation. The proposed structure offers a suitable substrate integrated waveguide (SIW) with about a decrease in size by half. In addition, Hilbert cells were added to realize the triple-band characteristics with good impedance matching, radiation patterns, and radiation performance. The antenna was fabricated on h = 1 mm thick dielectric substrate with dielectric constant (𝜀𝑟 = 4.3). The Hilbert cells were drilled on the top plane of the antenna substrate and fed using a microstrip transmission line. The proposed antenna is small, with a slot side length of approximately half of the guided wavelength. The three developed Hilbert cell HMSIW antenna resonates at 3.25, 5.94 and 6.5 GHz with a bandwidth of 2.97, 2.25 and 2.29% within a return loss of ‑38.77, ‑35.82 -23.35 dB, respectively. The results showed enhancements in antenna gain of 3.56, 4.97 and 6.43 dBi, with a radiation efficiency of -1.253, -0.493 and -0.586 dB, respectively.

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Section: Related Workmentioning

confidence: 99%

Design and Implementation of Triple Band Half Mode Substrate Integrated Waveguide (HMSIW) Antenna with Compact Size

et al. 2021

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“…Therefore, most of the MIMO antennas are developed using microstrip technology, and very few works are reported in the literature using SIW technology [6]. Moreover, with the advent of hybrid boundary techniques [7,8], miniaturized SIW cavities have been developed [9][10][11][12][13][14][15][16][17][18] and used for compact SIW antennas. They include half-mode SIW (HMSIW), quarter-mode SIW (QMSIW), and eighth-mode SIW (EMSIW) [12,13], which are used to develop compact MIMO antennas.…”

Section: Introductionmentioning

confidence: 99%

“…The QMSIW was used to develop MIMO antennas [14][15][16], where the bandwidth enhancement [14,16] and multiband [15] operations were adopted in the designs but at the expense of reduced isolation as compared to the FMSIW [6] or HMSIW [9][10][11][12][13]. However, the sizes of the FMSIW, HMSIW, and QMSIW designs are large compared to the microstrip antennas.…”

Section: Introductionmentioning

confidence: 99%

A High-Order EMSIW MIMO Antenna for Space-Constrained 5G Smartphone

Ali

Wajid

Usman

et al. 2021

Sensors

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This paper proposes a high-order MIMO antenna operating at 3.5 GHz for a 5G new radio. Using an eighth-mode substrate integrated waveguide (EMSIW) cavity and considering a typical smartphone scenario, a two-element MIMO antenna is developed and extended to a twelve-element MIMO. These MIMO elements are closely spaced, and by employing multiple diversity techniques, high isolation is achieved without using a decoupling network. The asymmetric EMSIW structures resulted in radiation pattern diversity, and their orthogonal placement provides polarization diversity. The radiation characteristics and diversity performance are parametrically optimized for a two-element MIMO antenna. The experimental results exhibited 6.0 dB and 10.0 dB bandwidths of 250 and 100 MHz, respectively. The measured and simulated radiation patterns are closely matched with a peak gain of 3.4 dBi and isolation ≥36 dB. Encouraged with these results, higher-order MIMO, namely, four- and twelve-element MIMO are investigated, and isolation ≥35 and ≥22 dB are achieved, respectively. The channel capacity is found equal to 56.37 bps/Hz for twelve-element MIMO, which is nearly 6.25 times higher than the two-element counterpart. The hand and head proximity analysis reveal that the proposed antenna performances are within the acceptable limit. A detailed comparison with the previous works demonstrates that the proposed antenna offers a simple, low-cost, and compact MIMO antenna design solution with a high diversity performance.

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“…This paper designs a compact tri-band MIMO antenna based on liquid crystal polymer (LCP), which can work in the 2.45/5.2 GHz bands of WLAN and the 3.5 GHz band of WiMAX [15][16][17][18][19][20]. The proposed MIMO antenna contains two symmetric antenna elements with two inverted-F branches.…”

Section: Introductionmentioning

confidence: 99%

A Compact Tri-Band Flexible Mimo Antenna Based on Liquid Crystal Polymer for Wearable Applications

Du¹,

Wang²,

Jin³

2021

PIER M

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In this paper, a compact tri-band flexible MIMO antenna based on liquid crystal polymer (LCP) is designed to operate in WLAN and WiMAX bands. The antenna consists of two identical antenna elements. The isolation structure includes a ground slot, two I-shaped branches, and a parasitic strip. The measured results show that the impedance bandwidth (S 11 < −10 dB) covers three frequency bands of 2.38-2.55 GHz, 3.37-3.60 GHz, and 4.92-5.37 GHz, and the S 21 of working bands is basically better than −19 dB. Moreover, the flexibility of the MIMO antenna is analyzed at different bent cases. The specific absorption ratio (SAR) values are obtained by simulating the model of antenna approaching human body. The simulated results show that the SAR value of the antenna meets the European Union (EU) standard. The proposed antenna demonstrates the characteristics of satisfactory radiation, high isolation, sound gain in working bands and flexibility, which has good application prospects in the wearable field.

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Half‐mode SIW cavity antenna for tri‐band MIMO applications

Cited by 13 publications

References 17 publications

Design and Implementation of Triple Band Half Mode Substrate Integrated Waveguide (HMSIW) Antenna with Compact Size

Design and Implementation of Triple Band Half Mode Substrate Integrated Waveguide (HMSIW) Antenna with Compact Size

A High-Order EMSIW MIMO Antenna for Space-Constrained 5G Smartphone

A Compact Tri-Band Flexible Mimo Antenna Based on Liquid Crystal Polymer for Wearable Applications

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