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Proceedings ArticleDOI

Challenges and innovations in modern antenna technology

01 Dec 2015-pp 1-2
TL;DR: In this paper, the authors address specific new techniques, which have been developed in the recent years and find potential applications They basically include printed as well as dielectric resonator antennas and the technique employs deliberately created defects on the ground plane, commonly termed as "defected ground structure" or more popularly "DGS" over 1200 technical papers, 3 book chapters, and several granted patents produced in the span of last one decade indicate the strength and applicability of the DGS techniques.
Abstract: This paper is aimed to address specific new techniques, which have been developed in the recent years and find potential applications They basically include printed as well as dielectric resonator antennas and the technique employs deliberately created defects on the ground plane, commonly termed as ‘defected ground structure’ or more popularly ‘DGS’ Over 1200 technical papers, 3 book chapters, and several granted patents produced in the span of last one decade indicate the strength and applicability of the DGS techniques Fundamental concepts to state of the art innovations will be addressed indicating their possible applications in different fields
Citations
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Proceedings ArticleDOI
01 Aug 2018
TL;DR: In this article, a dual-band printed circular monopole for Wi-Fi communications is presented, with a relative permittivity of 3, a loss tangent of 0.0027 and 0.76 mm of height.
Abstract: In this paper a dual-band printed circular monopole for Wi-Fi communications is presented. The lower band goes from 2,4 GHz to 2,5 GHz and the higher band goes from 5 GHz up to 6 GHz. The antenna was designed in CST Studio Suite and printed upon an Isola Astra MT3.0 substrate, with a relative permittivity of 3, a loss tangent of 0.0027 and 0.76 mm of height. Configurations, simulations and final results are presented.

1 citations


Additional excerpts

  • ...Those techniques form essentially filters (band-pass or band-reject) and can also be used on the antenna miniaturization the process, but its implementation brings complexity to design and configuration [6][7]....

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References
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Book
01 Jun 1979
TL;DR: In this article, the authors present a quasi-static analysis of an Enclosed Microstrip and a Slot-Coupled Microstrip Line, as well as a fullwave analysis of Discontinuity Inductance Evaluation.
Abstract: Microstrip Lines I: Quasi-Static Analyses, Dispersion Models, and Measurements -Introduction. Quasi-Static Analyses of a Microstrip. Microstrip Dispersion Models. Microstrip Transitions. Microstrip Measurements. Fabrication. Microstrip Lines II: Fullwave Analyses, Design Considerations, and Applications - Methods of Fullwave Analysis. Analysis of an Open Microstrip. Analysis of an Enclosed Microstrip. Design Considerations. Other Types of Microstrip Lines. Microstrip Applications. Microstrip Discontinuities I: Quasi-Static Analysis and Characterization -Introduction. Discontinuity Capacitance Evaluation. Discontinuity Inductance Evaluation. Characterization of Various Discontinuities. Compensated Microstrip Discontinuities. Microstrip Discontinuities II: Fullwave Analysis and Measurements - Planar Waveguide Analysis. Fullwave Analysis of Discontinuities. Discontinuity Measurements. Slotlines -Introduction. Slotline Analysis. Design Considerations. Slotline Discontinuities. Variants of Slotline. Slotline Transitions. Slotline Applications. Defected Ground Structure (DGS) -Introduction. DGS Characteristics. Modeling of DGS. Applications of DGS. Coplanar Lines: Coplanar Waveguide and Coplanar Strips -Introduction. Analysis. Design Considerations. Losses in Coplanar Lines. Effect of Tolerances. Comparison with Microstrip Line and Slotline. Transitions. Discontinuities in Coplanar Lines. Coplanar Line Circuits. Coupled Microstrip Lines -Introduction. General Analysis of Coupled Lines. Characteristics of Coupled Microstrip Lines. Measurements on Coupled Microstrip Lines. Design Considerations for Coupled Microstrip Lines. Slot-Coupled Microstrip Lines. Coupled Multiconductor Microstrip Lines. Discontinuities in Coupled Microstrip Lines. Substrate Integrated Waveguide (SIW) -Introduction. Analysis Techniques of SIW. Design Considerations. Other SIW Configurations. Transitions Between SIW and Planar Transmission Lines. SIW Components and Antennas. Fabrication Technologies and Materials.

2,182 citations


"Challenges and innovations in moder..." refers background in this paper

  • ...Three more recent books [5]-[7] have discussed about modern DGS techniques....

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Journal ArticleDOI
TL;DR: In this article, a simple ground plane structure that can reduce mutual coupling between closely packed antenna elements is proposed and studied, which consists of a slitted pattern, without via's, etched onto a single ground plane and it is therefore low cost and straightforward to fabricate.
Abstract: A simple ground plane structure that can reduce mutual coupling between closely-packed antenna elements is proposed and studied. The structure consists of a slitted pattern, without via's, etched onto a single ground plane and it is therefore low cost and straightforward to fabricate. It is found that isolations of more than -20 dB can be achieved between two parallel individual planar inverted-F antennas (PIFAs) sharing a common ground plane, with inter-antenna spacing (center to center) of 0.116 lambdao and ground plane size 0.331lambdao 2. At 2.31 GHz it is demonstrated that this translates into an edge to edge separation between antennas of just 10 mm. Similarly the structure can be applied to reduce mutual coupling between three or four radiating elements. In addition the mutual coupling between half wavelength patches and monopoles can also be reduced with the aid of the proposed ground plane structure. Results of parametric studies are also given in this paper. Both simulation and measurement results are used to confirm the suppression of mutual coupling between closely-packed antenna elements with our slitted ground plane.

586 citations


"Challenges and innovations in moder..." refers methods in this paper

  • ...Suppression of mutual coupling has been used in PIFA design [23] to achieve compact shape for mobile handset....

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Journal ArticleDOI
TL;DR: In this article, a new one-dimensional defected ground unit lattice is proposed to improve the effective inductance of the cutoff and stopband in order to control the cutoff frequency characteristics.
Abstract: A new one-dimensional (1-D) defected ground unit lattice is proposed in order to improve the effective inductance. Increasing the effective inductance makes it easy to control the cutoff frequency characteristics. The proposed periodic defected ground structure (DGS) provides the excellent cutoff and stopband characteristics. In order to show the improved the effective inductance, three DGS circuits were fabricated with identical periodic and different dimensions. Measurements on the fabricated DGS circuits show that the cutoff and stopband center frequency characteristics depend on the physical dimension of the proposed DGS unit lattice,.

429 citations


"Challenges and innovations in moder..." refers background in this paper

  • ...Kim and Park [1] first coined the term ‘DGS’ describing a dumbbell-shaped defect and since then it was primarily known for circuit applications....

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  • ...REFERENCES [1] C. S. Kim, J. S. Park, D. Ahn, and J. B. Lim, “A novel 1-...

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01 Jan 2000
TL;DR: In this paper, a 1-dimensional defected ground unit lattice is proposed to improve the effective inductance of the cutoff and center frequency characteristics of the DGS unit lattices.
Abstract: A new one-dimensional (1-D) defected ground unit lattice is proposed in order to improve the effective inductance. In- creasing the effective inductance makes it easy to control the cutoff frequency characteristics. The proposed periodic defected ground structure (DGS) provides the excellent cutoff and stopband char- acteristics. In order to show the improved the effective inductance, three DGS circuits were fabricated with identical periodic and dif- ferent dimensions. Measurements on the fabricated DGS circuits show that the cutoff and stopband center frequency characteris- tics depend on the physical dimension of the proposed DGS unit lattice.

423 citations

Journal ArticleDOI
TL;DR: In this article, a defected ground structure (DGS) pattern is proposed to reduce the cross-polarized (XP) radiation of a microstrip patch antenna, which is simple and easy to etch on a commercial microstrip substrate.
Abstract: A defected ground structure (DGS) is proposed to reduce the cross-polarized (XP) radiation of a microstrip patch antenna. The proposed DGS pattern is simple and easy to etch on a commercial microstrip substrate. This will only reduce the XP radiation field without affecting the dominant mode input impedance and co-polarized radiation patterns of a conventional antenna. The new concept has been examined and verified experimentally for a particular DGS pattern employing a circular patch as the radiator. Both simulation and experimental results are presented.

275 citations


"Challenges and innovations in moder..." refers background in this paper

  • ...Immediately after [3], the same group showed another application [14] to reduce the mutual coupling effect in microstrip arrays....

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  • ...The DGS was first integrated with a planar antenna in 2005 [3] especially to control its radiation properties and a series of subsequent investigations explored its strength and possibilities as discussed in [2]....

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  • ...DGS was first conceived and proposed for antenna design in 2005 [3] with an aim to suppress the cross-polarized (XP) radiations from a circular patch antenna....

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