Dumbbell Shape Antenna for MIMO Applications
06 Apr 2018-pp 1-5
TL;DR: In this article, a wide band planar antenna is proposed using two dumbbell shape antennas with and without slots, each element resonates at 5.2GHz and radiates in broadside direction.
Abstract: In this paper a wide band planar antenna is proposed. Two dumbbell shape antennas are designed using with and without slots. Each element resonates at 5.2GHz and radiates in broadside direction. The return loss of type-l antenna is 17dB with impedance bandwidth of 458MHz and return loss of type-2 antenna is 29dB with impedance bandwidth of 395MHz. This wide bandwidth is achieved by using staggered tuning, resulting from antenna element spacing and low impedance microstrip line for connecting the elements.
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01 Jan 1992
TL;DR: In this article, a brief overview of the basic characteristics of microstrip antennas is given, and the most significant developments in microstrip antenna technology have been made in the last several years.
Abstract: Microstrip antennas have been one of the most innovative topics in antenna theory and design in recent years, and are increasingly finding application in a wide range of modern microwave systems. This paper begins with a brief overview of the basic characteristics of microstrip antennas, and then concentrates on the most significant developments in microstrip antenna technology that have been made in the last several years. Emphasis is on new antenna configurations for improved electrical performance and manufacturability and on advances in the analytical modeling of microstrip antennas and arrays. >
1,604 citations
"Dumbbell Shape Antenna for MIMO App..." refers background in this paper
...But the biggest disadvantage of the planer structure is low bandwidth and low radiation efficiency [1]....
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TL;DR: In this paper, a mushroom-like E-plane coupled E-strip antenna array on a thick and high permittivity substrate has been analyzed using the finite-difference time-domain (FDTD) method.
Abstract: Utilization of electromagnetic band-gap (EBG) structures is becoming attractive in the electromagnetic and antenna community. In this paper, a mushroom-like EBG structure is analyzed using the finite-difference time-domain (FDTD) method. Its band-gap feature of surface-wave suppression is demonstrated by exhibiting the near field distributions of the electromagnetic waves. The mutual coupling of microstrip antennas is parametrically investigated, including both the E and H coupling directions, different substrate thickness, and various dielectric constants. It is observed that the E-plane coupled microstrip antenna array on a thick and high permittivity substrate has a strong mutual coupling due to the pronounced surface waves. Therefore, an EBG structure is inserted between array elements to reduce the mutual coupling. This idea has been verified by both the FDTD simulations and experimental results. As a result, a significant 8 dB mutual coupling reduction is noticed from the measurements.
1,394 citations
"Dumbbell Shape Antenna for MIMO App..." refers methods in this paper
...This can be achieved by using Electromagnetic Band Gap and Defected Ground structures [4-5]....
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TL;DR: In this article, a comprehensive study of infinite phased arrays of printed dipole antennas is presented, with emphasis on the scan blindness phenomenon, and a simple theory, based on coupling from Floquet modes to surface wave modes on the substrate, is shown to predict the occurrence of scan blindness.
Abstract: A comprehensive study of infinite phased arrays of printed dipole antennas is presented, with emphasis on the scan blindness phenomenon. A rigorus and efficient moment method procedure is used to calculate the array impedance versus scan angle. Data are presented for the input reflection coefficient for various element spacings and substrate parameters. A simple theory, based on coupling from Floquet modes to surface wave modes on the substrate, is shown to predict the occurrence of scan blindness. Measurements from a waveguide simulator of a blindness condition confirm the theory.
384 citations
"Dumbbell Shape Antenna for MIMO App..." refers methods in this paper
...Also this method introduces surface waves or leaky waves and if the antenna is used in MIMO configuration it will increase mutual coupling and edge effects [2]....
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Proceedings Article•
01 Oct 2016TL;DR: In this paper, the authors proposed a new compact Electromagnetic Band-Gap (EBG) structure using ring resonator with interdigital capacitor for 4G LTE band (1.72-1.88 GHz) with the return loss (S11) and radiation pattern of a horizontal dipole antenna placed above the EBG surface.
Abstract: This paper proposes a new compact Electromagnetic Band-Gap (EBG) structure using ring resonator with interdigital capacitor. The resonance frequency can be controlled as desired, while the size of EBG unit cell is very compact with its length of λ/8 compared with λ/2 of a conventional ring resonator. In order to accomplish the study, return loss (S11) and radiation pattern of a horizontal dipole antenna placed above the EBG surface are analyzed. The simulation results show that the antenna with the proposed EBG can be operated for 4G LTE band (1.72–1.88 GHz) with the S11 less than −10 dB and the gain of 8 dB.
1 citations
"Dumbbell Shape Antenna for MIMO App..." refers methods in this paper
...This can be achieved by using Electromagnetic Band Gap and Defected Ground structures [4-5]....
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