Compact tri‐band metamaterial‐inspired antenna based on CRLH resonant structures

Amani, Navid; Kamyab, M.; Jafargholi, Amir; Hosseinbeig, Ahmad; Meiguni, Javad Soleiman

doi:10.1049/el.2014.0875

Cited by 58 publications

(45 citation statements)

References 5 publications

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“…It is composed of three metal layers printed on low‐loss dielectric substrates. To have a preferable impedance matching condition, two 50 Ω input impedance lines are designed to feed the antenna . Rigorous checks have been applied for 180 ° Rat‐Race coupler design in conjunction with two T‐match branch‐line power divider.…”

Section: Antenna Design and Parametric Discussionmentioning

confidence: 99%

Compact substrate integrated waveguide mono-pulse antenna array

Meiguni

Khatami

Amn‐e‐Elahi

2017

Int J RF Microw Comput Aided Eng

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A compact monopulse antenna array based on substrate integrated waveguide technology is presented through this article. The design is fabricated on Printed Circuit Board (PCB) technology consisting of a double-layered 8-cell array antenna with a slot in the middle-ground metal used for aperture-coupling excitation and reducing unwanted spurious emissions from feed network. The Impedance bandwidth and AR bandwidth are enhanced due to optimal feed network, including Rat-Race coupler to generate sum and difference patterns for mono-pulse applications operating at 10 GHz. The prototype of the proposed antenna with the size of 124*25 mm 2 is fabricated and tested. Measured results compared very well to simulation results obtained by CST microwave studio and show 210-dB impedance bandwidth of 4% and 222 dB null-depth in difference mode.

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Section: Antenna Design and Parametric Discussionmentioning

confidence: 99%

Compact substrate integrated waveguide mono-pulse antenna array

Meiguni

Khatami

Amn‐e‐Elahi

2017

Int J RF Microw Comput Aided Eng

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“…Metamaterial (MTM) is one of the conventional techniques for antenna miniaturization and has been developed in various shapes and techniques such composite right/left hand (CRLH) to provide zeroth‐order resonators (ZORs), MTM substrate based on Artificial magnetic materials with Hilbert fractal model to increase effective permeability, and small electrical MTM antenna, based on a modified electrical coupled resonator . T CRLH structures include both right‐handed (RH) and the left‐handed (LH) properties in the LH structures, the shunt capacitance and series inductance are added to the conventional transmission line (TL), which can affect the phase and velocity of unit cells .…”

Section: Introductionmentioning

confidence: 99%

Microstrip slot antenna as an indoor wireless RFID with multiband attributes based on composite right‐hand/left‐hand load

Azizi

Naderi

Hatami

et al. 2019

Micro & Optical Tech Letters

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The goal of the present work is to present a slot antenna for wireless application based on a stack layer and composite right‐hand/left‐hand technique to achieve a multiband characteristic together with miniaturization and gain enhancement. This antenna covers 1.825 to 1.975 GHz for global system for mobile communications 1800, 2.9 to 4.3 GHz for long‐term evolution (LTE) and Worldwide Interoperability in Microwave Access, and 5.2 to 5.8 GHz for Wi‐Fi networks with the return loss of less than −6 dB (VSWR<3). We used a slit ring resonator structure with four vias and strip as the left‐hand circuit. We have also utilized a disk at the center of the top layer to improve the bandwidth and matching. We present the equivalent RLC circuit model for the final antenna which can help us realize the role of capacitance and inductances based on parametric studies. Both layers are fabricated over the FR4 substrate, and experimental results confirm the simulation results obtained by the HFSS. Moreover, the stack layer provides higher directivity and gain in comparison with the conventional slot antenna.

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“…Zeroth order resonance (ZOR) technique permits to reduce the electrical size of the antenna regardless of the physical dimensions of the antenna but these antenna has usually narrow bandwidth . Several researchers have investigated that CPW‐fed MTM antennas offers broad bandwidth with small electrical size and good radiation characteristics . An asymmetric CPW‐fed tri‐band antenna has been designed and seen that n = 0, ±1 modes have been obtained using resonant type approach .…”

Section: Introductionmentioning

confidence: 99%

“…Several researchers have investigated that CPW‐fed MTM antennas offers broad bandwidth with small electrical size and good radiation characteristics . An asymmetric CPW‐fed tri‐band antenna has been designed and seen that n = 0, ±1 modes have been obtained using resonant type approach . However this antenna has been suffered from the negative gain at lower mode.…”

Section: Introductionmentioning

confidence: 99%

Miniaturized dual-band metamaterial inspired antenna with modified SRR loading

Gupta

2018

Int J RF Microw Comput Aided Eng

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A miniaturized dual‐band CPW‐fed Metamaterial antenna with modified split ring resonator (SRR) loading has been presented in this paper. Proposed antenna comprises a tapered rectangular patch with a slot in which an elliptically SRR has been loaded to achieve miniaturization. Proposed antenna shows dual band operations in the operating band 3.25‐3.42 and 3.83‐6.63 GHz, respectively. It has been observed that lower mode (at 3.36 GHz) is originated by means of modified SRR. SRR is being modified by small meandered line inductor which is placed instead of strip. This provides an extra inductance to SRR resulting miniaturization. Overall electrical size of the proposed antenna is 0.222 × 0.277 × 0.017 λ0 at 3.36 GHz. Second band is due to coupling between feed and ground planes. The antenna offers an average peak gain of 1.72 and 3.41 dB throughout the first and second band respectively. In addition to that this antenna exhibits perfect omnidirectional and dipolar radiation patterns at xz‐ and yz‐ plane respectively. Due to consistent radiation pattern, ease of fabrication, and compact nature this antenna can be used for wireless applications such as worldwide interoperability for microwave access (WiMAX), industrial, scientific and medical (ISM) band, WLAN/Wi‐Fi bands.

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Compact tri‐band metamaterial‐inspired antenna based on CRLH resonant structures

Cited by 58 publications

References 5 publications

Compact substrate integrated waveguide mono-pulse antenna array

Compact substrate integrated waveguide mono-pulse antenna array

Microstrip slot antenna as an indoor wireless RFID with multiband attributes based on composite right‐hand/left‐hand load

Miniaturized dual-band metamaterial inspired antenna with modified SRR loading

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