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

Abstract

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

A Review on Different Techniques of Mutual Coupling Reduction Between Elements of Any MIMO Antenna. Part 2: Metamaterials and Many More

“…The other is the slits in the ground plane as represented in Figure 4b to reduce the MC between two monopoles UWB‐MIMO antenna (Q. Li et al., 2014). Similarly, many EBG structures have been studied in the literature, among them, few are going to be discussed here: 1‐D EBG structure comprises of patterns of grids on the top patch with a metallic ground plane, and both are shorted by several vias (W. Wu et al., 2018); conventional mushroom EBG structure loaded with slots (Lu & Lin, 2013); 4 × 1 array configuration of a unit cell size (6.8 × 6.8 mm) unipolar EBG (Dabas et al., 2018); multi‐layered EBG structure (T. Jiang et al., 2018); a novel uni‐conductor EBG placed between patch antenna as represented in the Figure 5a (Mohamed et al., 2019); EBG structure based on MTM (Alibakhshikenari et al., 2019b); waveguided MTM realized by crossed‐meander‐line slits exhibit magnetic resonance as well as the bandgap property (X. M. Yang et al., 2012); another EBG ground structure can be viewed in Figure 5b (Shen et al., 2019); a 2 × 5 EBG structure as represented in Figure 5c (Islam & Alam, 2013); split EBG structure (Tan et al., 2019); a novel and compact spiral EBG (Qiu‐Rong Zheng, Yun‐Qi Fu, 2008); EBG based corrugated structure (Lu & Lin, 2013); Tunable Double‐Layer EBG structures (Mavridou et al., 2016); some famous uniplanar EBG structure (Abedin & Ali, 2005; Abidin et al., 2018; Al‐Fayyadh et al., 2017; Alibakhshikenari, Virdee, et al., 2018; Farahani et al., 2010; Iqbal et al., 2019; Mohamadzade & Afsahi, 2017; Mu'ath J et al., 2014; Payandehjoo & Abhari, 2009; Soliman et al., 2015; Toolabi et al., 2016); dumbbell‐shaped EBG structure (A. Yu & Zhang, 2003); electromagnetic soft surfaces realized by metal strips loaded with C‐shaped slots (Chen et al., 2018); multilayer EBG structure (Exposito‐Dominguez et al., 2012); MTM inspired EBG structure (Alibakhshikenari et al., 2019a) mushroom type EBG structure (J. Kumar, 2016); high impedance ground plane (Y. Lee & Sun, 2008); multilayer mushroom type EBG (Payandehjoo & Abhari, 2014); EBG structure introduced at superstrate level (Suntives & Abhari, 2013) and a novel Fractal based ...…”

“…Li et al, 2014;Lu & Lin, 2013;Manimegalai, 2014;Mavridou et al, 2016;Mohamadzade & Afsahi, 2017;Mohamed et al, 2019;Mu'ath J et al, 2014;Payandehjoo & Abhari, 2009, 2014Qiu-Rong Zheng, Yun-Qi Fu, 2008;Radhi et al, 2019;Rajo-Iglesias et al, 2008;Sharma & Pandey, 2020;Shen et al, 2019;Soliman et al, 2015;Soukoulis, 2002;;S. D. Assimonis et al, 2012;Suntives & Abhari, 2013;Tan et al, 2019;Thakur et al, 2020;Toolabi et al, 2016;W. Wu et al, 2018;Yablonovitch, 1987;X.…”

“…Li et al, 2014). Similarly, many EBG structures have been studied in the literature, among them, few are going to be discussed here: 1-D EBG structure comprises of patterns of grids on the top patch with a metallic ground plane, and both are shorted by several vias (W. Wu et al, 2018); conventional mushroom EBG structure loaded with slots (Lu & Lin, 2013); 4 × 1 array configuration of a unit cell size (6.8 × 6.8 mm) unipolar EBG (Dabas et al, 2018); multi-layered EBG structure (T. Jiang et al, 2018); a novel uni-conductor EBG placed between patch antenna as represented in the Figure 5a (Mohamed et al, 2019); EBG structure based on MTM (Alibakhshikenari et al, 2019b); waveguided MTM realized by crossed-meander-line slits exhibit magnetic resonance as well as the bandgap property (X. M. Yang et al, 2012); another EBG ground structure can be viewed in Figure 5b ; split EBG structure (Tan et al, 2019); a novel and compact spiral EBG (Qiu-Rong Zheng, Yun-Qi Fu, 2008); EBG based corrugated structure (Lu & Lin, 2013); Tunable Double-Layer EBG structures (Mavridou et al, 2016); some famous uniplanar EBG structure (Abedin & Ali, 2005;Abidin et al, 2018;Farahani et al, 2010;Iqbal et al, 2019;Mohamadzade & Afsahi, 2017;Mu'ath J et al, 2014;Payandehjoo & Abhari, 2009;Soliman et al, 2015;Toolabi et al, 2016); dumbbell-shaped EBG structure (A. Yu & Zhang, 2003); electromagnetic soft surfaces realized by metal strips loaded with C-shaped slots (Chen et al, 2018); multilayer EBG structure (Exposito-Dominguez et al, 2012); MTM inspired EBG structure (Alibakhshikenari et al, 2019a) mushroom type EBG structure (J.…”

Multiport MIMO antennas with mutual coupling reduction techniques for modern wireless transreceive operations: A review

“…58 The feeding structure with slotting produces high isolation between antenna elements. 59 A T-shaped slot was etched between radiators to block the current; hence isolation is improved. 60 A k/4 slot produces good isolation, ECC, and gain.…”

Mutual coupling suppression of closely spaced microstrip antennas by ladder‐shaped conducting wall

“…Various efficient techniques and different types of isolation structures have been designed and analyzed to reduce the mutual coupling between MSAs. They include the optimization of the antenna dimensions so that the surface wave is not excited, printing various patterns on or within the substrate known as an electromagnetic bandgap structure, , or etching structures away from ground plane known as defected ground structure (DGS) , . The appropriate design of the extra structure in between the antennas creates an indirect signal coming via the further coupling path that opposes the signal going directly from element to element.…”