A novel low mutual coupling microstrip antenna array design using defected ground structure

Salehi, Mohsen; Tavakoli, A.

doi:10.1016/j.aeue.2005.12.009

Cited by 65 publications

(42 citation statements)

References 24 publications

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“…[3].When a multiple-element antenna embeds into the small mobile terminal, it should be compact (low profile) as much as possible. Additional requirements should be met, e.g., low mutual coupling (a high isolation between antennas) and robustness while maintaining on the compactness with acceptable diversity performance for multiple antennas [4].Therefore, in designing the antenna for the mobile terminal, it is important to balance the trade-off between compactness and performance [1], [4]. In the literature; very few investigations have been done as a comparative study based on the diversity performance (such as mutual coupling and envelope correction coefficient) between more than two microstrip antennas types.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on the Diversity Performance between Different Microstrip Antenna Arrays

Radhi

Nilavalan

Al-Raweshidy

et al. 2017

Loughborough Antennas &Amp; Propagation Conference (LAPC 2017)

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Abstract-In this paper, a unique systematic comparative study between different microstrip antennas array types is presented. The study includes a comparison based on the mutual coupling (S 21 ) and the envelope correlation coefficient between four different antennas array types: (a) PIFA antenna, (b) patch antenna, (c) monopole antenna, (d) slot antenna. All these different microstrip antennas have been designed and printed on a thin 1.6 mm FR-4 substrate with dielectric constant (ɛ r = 4.4), suitable for wireless PCS applications (1.9 GHz). Numerical simulations are carried out using HFSS ver 17.0 software. The mutual coupling and envelope correlation coefficient between these different microstrip antennas are studied for various antenna separations. Also, another brief comparison is presented which based on the obtained results particularly in inputs return and radiation characteristics loss at fixed antenna separation, by determining the primarily associated parameters such as the bandwidth, gain, directivity, radiation efficiency. However; it is found that separation between multiple antenna elements is the most critical and crucial parameter affecting on the antenna diversity performance such as both the mutual coupling and the envelope correlation coefficient (primarily it will decrease linearly with the distance increment). This comparative study would be very helpful for RF design engineers to select suitable microstrip antenna type while designing antenna arrays at frequency 1.9 GHz for wireless PCS applications.

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Section: Introductionmentioning

confidence: 99%

Comparative Study on the Diversity Performance between Different Microstrip Antenna Arrays

Radhi

Nilavalan

Al-Raweshidy

et al. 2017

Loughborough Antennas &Amp; Propagation Conference (LAPC 2017)

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“…The DGSs have been successively introduced to control and improve the radiation properties of the microstrip antennas. The defects introduced in the ground plane leads to the suppression of the cross-polarized radiations, reduction of the mutual coupling between the microstrip array elements and elimination of scan blindness of microstrip phased arrays [21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Wideband DGS Circular Ring Microstrip Antenna Design Using Fuzzy Approach With Suppressed Cross-Polar Radiations

Sharma¹,

Kandwal²,

Khah³

2013

PIER C

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Abstract-This paper presents a novel design of a circular ring defected ground structure (DGS) antenna for bandwidth enhancement using fuzzy logic approach. The ground plane of the antenna is defected by introducing circular ring sector type of defect beneath the circular ring patch. The position of the defect in the ground plane to attain the highest return loss and corresponding frequency is determined by using Fuzzy Inference System (FIS). The antenna resonates in X-band showing wideband characteristics with improved gain and reduced cross polar components. The return loss and analogous frequency obtained from simulated results and fuzzy system are compared and are in good agreement. The return loss and input impedance is measured experimentally and compared with the simulated results. Parameters like impedance bandwidth, VSWR and antenna gain are likewise calculated and discussed. The simulated results for the radiation pattern of the proposed design with polarization (Co-polar and Crosspolar) are also presented. The simulated impedance bandwidth of about 1.33 GHz (1.2 GHz experimentally) in X-band is obtained with a gain of 6.43 dB and also cross-polarized radiations have an isolation of 20 dB.

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“…Also, it degrades the beam forming and steering. Many methods are presented in lit-eratures for decreasing or compensating this effect such as modifying antenna substrate, changing patch shape and so on [11,12,13,14,15,16,17,18,19]. A new design method is presented in this paper in which a non-regular polygonal patch is used instead of ordinary patches and the shape of patch is determined according to the design constraints.…”

Section: Introductionmentioning

confidence: 99%

Design a low mutual coupling microstrip array antenna with non regular polygonal patches

Farahbakhsh¹,

Moradi

2010

IEICE Electron. Express

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This paper presents a new method to design microstrip array antennas. In this method, non-regular polygonal patches are used and their shapes are determined by genetic algorithm (GA) depending on the design needs. The positions of patch vertexes are optimized by GA. Connecting the vertexes with an incorrect order yields to an invalid patch which its edges intersect themselves. So, ant colony optimization (ACO) is used to find correct connection order of vertexes. This method is used to design an array antenna with low amount of return loss and mutual coupling. Finally, design procedure is verified by simulation.

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A novel low mutual coupling microstrip antenna array design using defected ground structure

Cited by 65 publications

References 24 publications

Comparative Study on the Diversity Performance between Different Microstrip Antenna Arrays

Comparative Study on the Diversity Performance between Different Microstrip Antenna Arrays

Wideband DGS Circular Ring Microstrip Antenna Design Using Fuzzy Approach With Suppressed Cross-Polar Radiations

Design a low mutual coupling microstrip array antenna with non regular polygonal patches

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