Four‐element quad‐band multiple‐input–multiple‐output antenna employing split‐ring resonator and inter‐digital capacitor

Sarkar, Debdeep; Singh, Aditya; Saurav, Kushmanda; Srivastava, Kumar Vaibhav

doi:10.1049/iet-map.2015.0189

Cited by 48 publications

(30 citation statements)

References 27 publications

(48 reference statements)

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“…Parameters C R and L R are parasitic capacitance and inductance which are usually ignored due to their very small value. When we give a specific phase shift (Δϕ), C L and L L can be calculated from Equation (2). Here, we suppose Δϕ = 4π/3, then the obtained C L and L L are 2 pF and 1.24 nH, respectively.…”

Section: Miniaturized Feeding Networkmentioning

confidence: 99%

“…Due to light weight, low profile, and easy processing, microstrip antenna arrays have been widely applied to many microwave and millimeter wave terminals, such as Multiple Input Multiple Output (MIMO) [1,2], radar systems and air vehicles. On the other hand, with the rapid growth of modern wireless communication systems, these wireless terminals become more and more compact.…”

Section: Introductionmentioning

confidence: 99%

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Ultra-Compact Microstrip Antenna Array and Miniaturized Feeding Network

Qiao¹,

Gao²,

Yu³

et al. 2017

PIER C

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Abstract-In this paper, an interdigital resonator that can greatly decrease mutual coupling between adjacent patches is proposed to realize an ultra-compact microstrip antenna array operating in 2.4 GHz wireless communication system. Due to its remarkable performance of decoupling, the edge to edge distance between adjacent patches can be reduced to 0.08λ 0 and even less. Meanwhile, a miniaturized feeding network, which is composed of a CRLH-TL-based phase shifter and T-junction-based power divider, is used to feed the compact antenna array. The simulation results show that the proposed antenna array has an impedance bandwidth of 8.34%. We fabricate the antenna array to verify its performance. The experimental results are in good agreements with the simulations. Compared to the published designs, the proposed antenna array has an ultra-compact structure and hence can be used in space limited communication systems.

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Section: Miniaturized Feeding Networkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ultra-Compact Microstrip Antenna Array and Miniaturized Feeding Network

Qiao¹,

Gao²,

Yu³

et al. 2017

PIER C

View full text Add to dashboard Cite

show abstract

“…The mutual coupling between the antenna elements has to be maintained minimum while designing MIMO antennas. To achieve this, various isolation enhancement techniques have been used like use of neutralization lines [1]- [2], tree like decoupling elements structures [3], parasitic elements [4], orthogonal feeding scheme [5] etc. However, use of such techniques often increase antenna-footprint and make the system more complex.…”

Section: Introductionmentioning

confidence: 99%

Three-Element MIMO Antenna System With Pattern and Polarization Diversity for WLAN Applications

Sharma

Sarkar

Saurav

et al. 2017

Antennas Wirel. Propag. Lett.

Self Cite

120

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In this paper, a three-element compact Multiple Input Multiple Output (MIMO) antenna system having both pattern and polarization (linear/circular) diversity is proposed. The proposed MIMO system consists of a chamfered edge square patch antenna with an offset feed that provides circular polarization in broadside direction. Furthermore, two printed dipole antennas are placed adjacent to it for providing linearly polarized end-fire radiation. The three-element MIMO antenna system exhibits good isolation (> 15 dB) without the use of any separate decoupling structure. The match between the simulated and measured results on fabricated antenna prototype suggests that the proposed antenna can be a good candidate for pattern and polarization diversity MIMO applications in the 5.8 GHz WLAN frequency range.

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“…Also, a wideband MIMO antenna with two radiators was designed for mobile devices for LTE, WLAN, WiMAX, WCDMA, and UWB applications . Sometimes miniaturization in MIMO antenna has been achieved by partial disconnected ground …”

Section: Introductionmentioning

confidence: 99%

Modified circular common element four-port multiple-input-multiple-output antenna using diagonal parasitic element

Chouhan

Panda

Kushwah

2018

Int J RF Microw Comput Aided Eng

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A four‐port multiple input multiple‐output (MIMO) antenna with common radiating element is proposed for 2.4 GHz Wi‐Fi applications. It comprises a modified circular radiator fed by four identical modified feedlines, partial ground planes, and a diagonal parasitic element (DPE). The parasitic element is used to enhance the interport isolation. The antenna has a 2:1 Voltage standing wave ratio (VSWR) impedance band 2.34‐2.56 GHz and nearly omnidirectional radiation patterns. The radiation efficiency is more than 79% and gain is 2 dBi at resonant 2.43 GHz. The isolation in the given frequency band is 10 dB. At the 2.43 GHz, the isolation between adjacent ports (1, 2 and 1, 4) is 14 dB and between opposite ports (1, 3) is 12 dB. The mean effective gain (MEG) ≤ −2.7 dB and envelope correlation coefficient is <0.01. The −10 dB total active reflection coefficient bandwidth is 202 MHz. The antenna is designed for a Wi‐Fi device and the effectiveness of antenna has been checked for distance of ½ feet from the human head. The specific absorption rate (SAR) is found to be ≤0.17 W/Kg by CST simulation tool.

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Four‐element quad‐band multiple‐input–multiple‐output antenna employing split‐ring resonator and inter‐digital capacitor

Cited by 48 publications

References 27 publications

Ultra-Compact Microstrip Antenna Array and Miniaturized Feeding Network

Ultra-Compact Microstrip Antenna Array and Miniaturized Feeding Network

Three-Element MIMO Antenna System With Pattern and Polarization Diversity for WLAN Applications

Modified circular common element four-port multiple-input-multiple-output antenna using diagonal parasitic element

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