Broadband mm-Wave Microstrip Array Antenna With Improved Radiation Characteristics for Different 5G Applications

Khalily, Mohsen; Tafazolli, Rahim; Xiao, Pei; Kishk, Ahmed A.

doi:10.1109/tap.2018.2845451

Cited by 203 publications

(119 citation statements)

References 10 publications

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“…The low gain amount (about 6 dB) has recently been upgraded with the help of metamaterial structures up to 10 dB . Methods such as design of microstrip antenna arrays, the use of parasitic elements, and the help of electromagnetic band‐gap (EBG) are the common ways to increase the gain of microstrip antennas. In Reference , with the use of parasitic elements, the maximum gain of 12.5 dBi is achieved at 5.3 GHz.…”

Section: Introductionmentioning

confidence: 99%

Gain enhancement and mutual coupling reduction of multiple‐intput multiple‐output antenna for millimeter‐wave applications using two types of novel metamaterial structures

Khajeh‐Khalili

Honarvar

Naser‐Moghadasi

et al. 2019

Int J RF Microw Comput Aided Eng

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A method to significantly increase the gain and reduce the mutual coupling of microstrip multiple-intput multiple-output (MIMO) antenna based on metamaterial concept is presented. The μ-negative and ε-negative features of the proposed modified peacelogo planar metamaterial (MPLPM) and two-sided MPLPM (TSMPLPM) structures are calculated. The antenna structure consists of eight MPLPM slabs and two TSMPLPM, which are embedded in azimuth plane of a MIMO antenna vertically. The dimensions of MIMO antenna are 28 × 16 × 6.3 mm 3 at 40 GHz. As a result, a compact MIMO antenna is simulated in comparison with primary microstrip structures.The corresponding return-loss of the antenna is better than 10 dB over 34.5 to 45.5 GHz for Ka-band applications. Good consent between the measured and simulated result is tacked. The maximum simulated gain of the structure is 15.5 dB at 40 GHz, creating a maximum gain improvement of 11.5 dB in comparison with a MIMO antenna without any metamaterial combinations. The value of the insertionloss (isolation) is 33 dB, which has improved by more than 25 dB compared to the conventional sample. K E Y W O R D Shigh-gain, millimeter-wave antenna, MIMO antenna, peace-logo metamaterial

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Section: Introductionmentioning

confidence: 99%

Gain enhancement and mutual coupling reduction of multiple‐intput multiple‐output antenna for millimeter‐wave applications using two types of novel metamaterial structures

Khajeh‐Khalili

Honarvar

Naser‐Moghadasi

et al. 2019

Int J RF Microw Comput Aided Eng

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“…To realize the gigabit data rate while overcoming the high loss in high frequency bands, several promising techniques, including high-gain array antennas and multibeam antennas (MBAs), are likely to be adopted in the 5G communication systems [2]- [4]. Recently, array antennas with broad bandwidths and high gains were investigated based on planar waveguides [5]- [6], substrate integrated waveguides (SIWs) [7]- [8], and microstrip techniques [9]- [11]. In [12]- [14], a variety of MBAs were achieved based on reflectarrays [12], transmission lenses [13], and beamforming circuits [14].…”

Section: Introductionmentioning

confidence: 99%

Planar Sub-Millimeter-Wave Array Antenna With Enhanced Gain and Reduced Sidelobes for 5G Broadcast Applications

Mao

Khalily

Xiao

et al. 2019

IEEE Trans. Antennas Propagat.

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120

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In this paper, a compact, broadband, planar array antenna with omnidirectional radiation in horizontal plane is proposed for the 26 GHz fifth-generation (5G) broadcast applications. The antenna element is composed of two dipoles and a substrate integrated cavity (SIC) as the power splitter. The two dipoles are placed side-by-side at both sides of the SIC and they are compensated with each other to form an omni-directional pattern in horizontal plane. By properly combing the resonant frequencies of the dipoles and the SIC, a wide impedance bandwidth from 24 to 29.5 GHz is achieved. To realize a large array while reducing the complexity, loss and size of the feeding network, a novel dual-port structure combined with radiation and power splitting functions is proposed for the 1 st time. The amplitude and phase on each element of the array can be tuned, and therefore, the grating lobes level can be significantly reduced. Based on the dual-port structure, an 8-element array with an enhanced gain of over 12 dBi is designed and prototyped. The proposed antenna also features low profile, low weight and low cost, which is desirable for 5G commercial applications. Measured results agree well with the simulations, showing that the proposed high-gain array antenna has a broad bandwidth, omni-directional pattern in horizontal plane, and low side-lobes.

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“…Nowadays, antenna arrays are widely used in a large variety of scenarios involving far-and near-field focusing/multifocusing applications for satellite, cellular, vehicular, and sensor networks [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. However, even if the array technology is already widespread, its importance is expected to further increase, since the directionality of the communications will represent a basic enabling functionality of the forthcoming fifth-generation (5G) and Internet of things (IoT) systems [18][19][20][21]. This forecast is motivated, on one hand, by the expected presence of a huge number of active devices (smartphones, sensors, actuators), and, on the other hand, by the adoption of the millimeter-wave (mmWave) bands.…”

Section: Introductionmentioning

confidence: 99%

Geometrical Synthesis of Sparse Antenna Arrays Using Compressive Sensing for 5G IoT Applications

Buttazzoni

Babich

Vatta

et al. 2020

Sensors

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One of the main targets of the forthcoming fifth-generation (5G) cellular network will be the support of the communications for billions of sensors and actuators, so as to finally realize the Internet of things (IoT) paradigm. This pervasive scenario unavoidably requires the design of cheap antenna systems with beamforming capabilities for compensating the strong attenuations that characterize the millimeter-wave (mmWave) channel. To address this issue, this paper proposes an iterative algorithm for sparse antenna arrays that enables to derive the number of elements, their amplitudes, phases, and positions in the presence of constraints on the far-field pattern. The algorithm, which relies on the compressive sensing approach, is formulated by transforming the original nonconvex optimization problem into a convex one. To prove the suitability of the conceived solution for 5G IoT mmWave applications, numerical examples and comparisons with other existing methods are provided, considering synthesis problems with different pattern and aperture specifications.

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Broadband mm-Wave Microstrip Array Antenna With Improved Radiation Characteristics for Different 5G Applications

Cited by 203 publications

References 10 publications

Gain enhancement and mutual coupling reduction of multiple‐intput multiple‐output antenna for millimeter‐wave applications using two types of novel metamaterial structures

Gain enhancement and mutual coupling reduction of multiple‐intput multiple‐output antenna for millimeter‐wave applications using two types of novel metamaterial structures

Planar Sub-Millimeter-Wave Array Antenna With Enhanced Gain and Reduced Sidelobes for 5G Broadcast Applications

Geometrical Synthesis of Sparse Antenna Arrays Using Compressive Sensing for 5G IoT Applications

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