Compact Ebg Structures for Reduction of Mutual Coupling in Patch Antenna Mimo Arrays

Naser‐Moghadasi, Mohammad; Ahmadian, Rahele; Mansouri, Zahra; Zarrabi, Ferdows B.; Rahimi, Maryam

doi:10.2528/pierc14081603

Cited by 43 publications

(18 citation statements)

References 29 publications

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“…Integration of EBGs in microstrip antenna configuration is one of the most important applications of these structures. Microstrip patch antennas due to their interesting characteristics such as low weight, low profile, simple design procedure, low fabrication cost and ease of mounting on the host surface have been applied in a wide range of applications in the RF and microwave community . To eliminate or reduce the mutual coupling between few devices and these are done by utilizing electromagnetic shields and EBG and absorbers are also implemented for shielding .…”

Section: Introductionmentioning

confidence: 99%

Compact meandered‐shape electromagnetic bandgap structure using in a microstrip array antenna application

Toolabi

Sadeghzadeh

Nasser-Moghadasi

2016

Micro & Optical Tech Letters

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In this letter, a novel spiral shape for electromagnetic bandgap structure (EBG) is presented for array structure. By implementation of the spiral formation, the inductance of the EBG unit cell will be increased and the unit cells are compacted around 36% for 3.6 GHz in comparison to conventional EBG unit cells. The prototype model of unit cells is used for 2 × 2 element microstrip patch array antenna with slot feed for improving the radiation gain of the antenna by reducing the mutual coupling effect of the antenna. Suppression of surface waves using EBG has improved the gain about 1.2 dB. Finally, an antenna prototype was fabricated and tested. Good agreement between simulation and measurement is obtained that verified the performance of the proposed structure. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2084–2088, 2016

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Section: Introductionmentioning

confidence: 99%

Compact meandered‐shape electromagnetic bandgap structure using in a microstrip array antenna application

Toolabi

Sadeghzadeh

Nasser-Moghadasi

2016

Micro & Optical Tech Letters

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“…In accordance to the literature, hybrid 'antenna-EBG' structures would have gain and frequency bandwidth larger than that of simple antennas, specific radiation patterns regarding the space distribution of the radiated power, satisfactory Front-to Back Ratio, etc, and at the same time be miniaturized and of very low profile [1][2][3][4][5][6]. Additionally, attributes as polarization diversity, sufficient MEG and reduction of mutual coupling between the antenna array elements could be obtained, thus being attractive to modern applications [7][8][9][10][11][12]. Recently, a novel configuration for EBG lattices has been proposed in the literature.…”

Section: Introductionmentioning

confidence: 99%

A New Method of Driving Wire Dipole Antennas to Multiband Operation via Non-Uniform Ebg Lattices for Employment to Wireless Communication Applications

Mourtzios¹

2016

PIER C

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In this paper, a novel approach is attained to the design of low profile antenna structures with wire dipoles and multiband operation. The aim is achieved by utilization of non-uniform Electromagnetic Band Gap (EBG) lattices as reflectors, and this potential comes to be added to the total of special capabilities of this type of Artificial Magnetic Conductors (AMC). It is proved that a properly designed EBG of this type can resonate at more than one frequency and is capable to drive, inside these bands, the dipole to higher order modes of operation besides its basic one. The resulting hybrid radiator apart from its multiband operation exhibits high gain that reaches the value of 9.6 dB, satisfactory Mean Effective Gain (MEG) and very low correlation coefficients, much less than 0.1, between the signals at the input of the dipoles in the case that the radiator is configured as an antenna array. The study of these quantities was performed using the signal characteristics of a real mobile communication environment along with the hybrid antenna properties of operation. The presented analytical results show that the designed radiators are competitive to the classical microstrip ones and can be effectively used in modern wireless communication networks, incorporated either into stationary or into mobile units.

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“…Also, Slot antenna is suitable for designing antenna with circular polarization and it is noticed to achieve circular polarization with change in slot feeds in some researches . Microstrip compact slot antennas for wireless application are some models of slot antenna that have been designed by some techniques as slot ring, parasitic element, L and U shape slot . Also, microstrip slot antenna with coplanar‐waveguide‐fed or microstrip line are common type of antenna for UWB and multiband applications and many researches have been done to design compact and integrated structures to increase the impedance bandwidth or miniaturization.…”

Section: Introductionmentioning

confidence: 99%

Microstrip slot antenna applications with SRR for WiMAX/WLAN with linear and circular polarization

Zarrabi

Mansouri

Ahmadian

et al. 2015

Microw. Opt. Technol. Lett.

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half-power angle in the vertical plane is 5.4 (q 5 624.0399). The height of the reception point is h 5 2.5 m. Measurements were conducted using a transmitter antenna tilt of 6 and 10 . The estimated slope of the street was 3.8 . The propagation environment is a canyon street and, therefore, the COST-WI model for free space properly represents the propagation environment (c 5 2.6). Considering the tilt of 10 , (1) gives X exp max 5 78 m and (5) states that the maximum location of exposure to electromagnetic fields should be found in the interval (64 m, 99 m). The measured maximum exposure location is at X 5 67 m, within the calculated region. Considering a tilt of 6 , X exp max 5 105 m and the region calculated using Eq. (5) is in the interval (82 m, 145 m). The measured maximum exposure location is at X 5 107 m. CONCLUSIONThis letter proposes a method to calculate the region that contains the location of maximum exposure to RF EMF. In real environments, this point can be some dozens of meters far from the point estimated using (1). When evaluating the field strength at X exp max , if the measurements were close to the established limit, the location can be considered compliant, even if the radiocommunication station is not, once the field strength at other point may be higher than the limit. Thus, it is necessary to assess the field strength in the region R around X exp max and perform spatial averaging appropriately. The method proposed in this letter shows how to define this region. Results show that the proposed method is compatible with field measurements data. 2.

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Compact Ebg Structures for Reduction of Mutual Coupling in Patch Antenna Mimo Arrays

Cited by 43 publications

References 29 publications

Compact meandered‐shape electromagnetic bandgap structure using in a microstrip array antenna application

Compact meandered‐shape electromagnetic bandgap structure using in a microstrip array antenna application

A New Method of Driving Wire Dipole Antennas to Multiband Operation via Non-Uniform Ebg Lattices for Employment to Wireless Communication Applications

Microstrip slot antenna applications with SRR for WiMAX/WLAN with linear and circular polarization

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