Design and Characterization of Wideband Printed Antenna Based on DGS for 28 GHz 5G Applications

In this paper, a compact, wideband, printed antenna is proposed for millimeter-wave fifth-generation communication systems. The proposed design is a patch antenna with a defected ground structure, in which ground plane defects are utilized to reduce resonance and achieve wideband operation. The optimized antenna dimensions are 2.5 mm × 4.5 mm with a substrate thickness of 0.203 mm. A prototype antenna was fabricated and measured to verify the performance, and it was established that the simulated and measured results were in good agreement. The measured bandwidth was approximately 6.4 GHz (26.5–32.9 GHz) with a peak gain of 5.62 dBi and an efficiency in operational bandwidth of 84%. The compactness, wide bandwidth, and decent gain suggest that the proposed antenna is a potential contender for forthcoming communication systems.

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Characterization of Tiled Architecture for C-Band 1-Bit Beam-Steering Transmitarray

Sensors ◽

10.3390/s21041259 ◽

2021 ◽

Vol 21 (4) ◽

pp. 1259

Author(s):

Dmitry Kozlov ◽

Irina Munina ◽

Pavel Turalchuk ◽

Vitalii Kirillov ◽

Alexey Shitvov ◽

...

Keyword(s):

Communication Systems ◽

Beam Steering ◽

Unit Cell ◽

Electromagnetic Simulations ◽

Fifth Generation ◽

Full Wave ◽

Array Architecture ◽

Modulation Pattern ◽

Good Agreement

A new implementation of a beam-steering transmitarray is proposed based on the tiled array architecture. Each pixel of the transmitarray is manufactured as a standalone unit which can be hard-wired for specific transmission characteristics. A set of complementary units, providing reciprocal phase-shifts, can be assembled in a prescribed spatial phase-modulation pattern to perform beam steering and beam forming in a broad spatial range. A compact circuit model of the tiled unit cell is proposed and characterized with full-wave electromagnetic simulations. Waveguide measurements of a prototype unit cell have been carried out. A design example of a tiled 10 × 10-element 1-bit beam-steering transmitarray is presented and its performance benchmarked against the conventional single-panel, i.e., unibody, counterpart. Prototypes of the tiled and single-panel C-band transmitarrays have been fabricated and tested, demonstrating their close performance, good agreement with simulations and a weak effect of fabrication tolerances. The proposed transmitarray antenna configuration has great potential for fifth-generation (5G) communication systems.

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DEFECTED GROUND COPLANAR MULTI-BAND-PASS MICROSTRIP FILTER

INFORMATION TECHNOLOGY IN INDUSTRY ◽

10.17762/itii.v9i1.102 ◽

2021 ◽

Vol 9 (1) ◽

pp. 64-68

Author(s):

Reena Pant, Rakesh Kumar Maurya, Pradyot Kala

Keyword(s):

Ground Plane ◽

Inductive Coupling ◽

Defected Ground Structure ◽

Ground Structure ◽

Microstrip Filter ◽

Coupling Technique ◽

Filter Performance ◽

Band Pass ◽

5 Ghz ◽

Good Agreement

This paper presents a combination of an inductive coupling technique and coplanar ground plane microstrip filter. Here, inductive coupling technique is used to overcome the unwanted radiation loss generated by the gap between the co-planar ground plane and the transmission line which improves filter characteristics. A defected ground structure (DGS) is integrated with the proposed filter to achieve a tri-bandpass characteristic (1.85, 3.53, and 5 GHz) without hampering the filter performance. The experimental results of the proposed filter are found in good agreement with simulated results.

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Design and Research of Miniaturized Micro Strip Slot with and without Defected Ground Structure

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.b1060.0982s1119 ◽

2019 ◽

Vol 8 (2S11) ◽

pp. 391-398 ◽

Cited By ~ 1

Keyword(s):

Microstrip Antenna ◽

Communication Systems ◽

Return Loss ◽

Ground Plane ◽

Broad Band ◽

Wide Band ◽

Defected Ground Structure ◽

Ground Structure ◽

Multiband Antennas ◽

Microstrip Feed

In this paper, a compact microstrip patch has a slot associated with the Defected Ground Structure radiator is presented. Instead of semi-infinite ground plane, the proposed antenna adopts the defected ground plane. The Radiating patch mendacity on the FR-4 substrate which is having dielectric constant of 4.4, thereby provides good bandwidth. This microstrip antenna is designed for wide bandwidth applications in range of 5.5GHz to 7.25GHz. Proposed work introduces a methodology wherein reducing of structure’s increase the bandwidth as well as return loss with defected ground structure (DGS).However since communication systems require small size, broad band and multiband antennas, monopoles have to be ensued for fabricating broad-band and wide-band antennas. In the proposed work investigations are carried out to design a new antenna with broad-band properties. Simulations are carried out via An soft HFSS electromagnetic simulator software- fabricated on FR-4 Substrate and tested with Vector network Analyzer. Measurement and Simulation results obtained prove the applicability of proposed antenna in 5.5GHz to 7.25GHz frequency range with a return loss of -31.3dB and 11.5dB etc. Microstrip feed line technique is used to feed the antenna with 50Ω impedance.

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An X-shaped fractal antenna with DGS for multiband applications

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078716000994 ◽

2016 ◽

Vol 9 (5) ◽

pp. 1075-1083 ◽

Cited By ~ 11

Author(s):

Ankush Gupta ◽

Hem Dutt Joshi ◽

Rajesh Khanna

Keyword(s):

Communication Systems ◽

Ground Plane ◽

Line Length ◽

Size Reduction ◽

Impedance Bandwidth ◽

Network Analyzer ◽

Fractal Antenna ◽

Defected Ground Structure ◽

Ground Structure ◽

Ieee 802.11A

In this paper, an X-shaped fractal antenna with defected ground structure (DGS) is presented for multiband and wideband applications. The X shape is used due to its simple design and DGS is utilized to achieve size reduction with multiband and wideband features in the frequency range of 1–7 GHz. The proposed structure is fabricated on FR4 substrate with 1.6 mm thickness. We have proposed two different antennas both are having X-shaped fractal patch with a slotted ground plane to have more impedance bandwidth and better return loss. Various parameters like scale factor, width of ground plane, number of slots with their dimensions and feed line length are optimized to have size reduction and for enhancing the performance of antenna. Reflection coefficient shows the multiband and wideband features of proposed antenna. One of the proposed antennas covers various applications like IEEE802.11y at 3.65 and 4.9 GHz, IEEE 802.11a at 5.4 GHz, 802.11P at 5.9 GHz. Other antenna covers applications like IEEE802.16 at 3.5 GHz; 5 cm band for amateur radio and satellite and future 5 G communication systems over 6 GHz. The antenna designing was done using CST software and simulation results were compared with experimental results (using E5071C network analyzer).

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A Research on Microstrip Ultrawide Band Filters using Defected Ground Structure Techniques

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.j9372.0881019 ◽

2019 ◽

Vol 8 (10) ◽

pp. 2147-2153

Keyword(s):

Wireless Communication ◽

Communication Systems ◽

Ground Plane ◽

Vital Role ◽

Ultra Wideband ◽

Defected Ground Structure ◽

Ground Structure ◽

Microstrip Filters ◽

Low Pass ◽

Defected Ground Structures

In this paper, microstrip ultra-wideband (UWB) filters using various defected ground structures are studied. Miniature microstrip filters employed in transceiver of modern wireless communication systems play vital role in controlling and regulating frequency response. DGS techniques are etched in ground plane to design compact microstrip based low pass, high pass, bandpass and band reject filters used in modern wireless systems. Various modified and hybrid defected ground structure techniques are employed to achieve high return loss, low insertion loss, ultra compactness, good selectivity and linearity in filters. Study reveals that the proper selection and incorporation of DGS techniques while designing microstrip ultra wideband filter optimizes the various vital parameters which enhances its performance and practicability for various modern wireless communication applications.

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Frequency Reconfigurable Antenna Array Using Defected Ground Structure for Outdoor Wireless Communication Systems

International Journal of Electrical & Electronic Systems Research (IEESR) ◽

10.24191/ieesr.v9i1.1372 ◽

2019 ◽

Vol 9 (1) ◽

pp. 33

Author(s):

Mohd Aziz Aris ◽

Mohd Tarmizi Ali ◽

Nurulhuda Abd Rahman ◽

Idnin Pasya Ibrahim

Keyword(s):

Wireless Communication ◽

Communication Systems ◽

Array Antenna ◽

Wireless Communication Systems ◽

Reconfigurable Antenna ◽

Defected Ground Structure ◽

Ground Structure ◽

Resonant Frequencies ◽

Frequency Reconfigurable Antenna ◽

Good Agreement

This paper proposes frequency reconfigurable antenna for outdoor wireless communication systems, the 4 x 4 array antenna has designed at two resonant frequencies 7.5 GHz and 8.85 GHz. The periodic dumbbell geometry etched on the ground layer newly proposed with dual functionality, to control desired frequency and to couple radiating patches at the top substrate with feeding line at the bottom substrate. The reconfigurability of the patch antenna is controlled by utilizing the copper pad of the feeding network with OPEN and SHORT states. The reconfigurable antenna has been simulated and optimized using Computer Simulation Technology (CST) to get the desired responds. The good agreement between simulation and measured results indicates that the frequency reconfigurable patch array antenna using Periodic Dumbbell Slotted Aperture Structure (FRPDSA) is feasible to support outdoor wireless communication systems.

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A 2.45 GHz microstrip antenna with harmonics suppression capability by using defected ground structure

Bulletin of Electrical Engineering and Informatics ◽

10.11591/eei.v9i1.1847 ◽

2020 ◽

Vol 9 (1) ◽

pp. 387-395

Author(s):

Shaharil Mohd Shah ◽

M. Mohamad ◽

S. A. Hamzah ◽

Z. Z. Abidin ◽

F. C. Seman ◽

...

Keyword(s):

Patch Antenna ◽

Microstrip Antenna ◽

Ground Plane ◽

Higher Order ◽

Microstrip Patch Antenna ◽

Defected Ground Structure ◽

Ground Structure ◽

Microstrip Patch ◽

Tan Δ ◽

Good Agreement

In this work, a microstrip patch antenna with an inset feed and defected ground structure (DGS) is designed at the resonant frequency of 2.45 GHz. The antenna is designed on a FR-4 substrate with a dielectric constant, εr of 4.5, loss tangent, tan δ of 0.019 and thickness, h of 1.6 mm. The technique of DGS is used to avoid the use of additional circuits in the antenna to suppress the harmonics. By introducing a single and additional slots DGS at both ends on the antenna ground plane, the proposed microstrip patch antenna is able to suppress the higher order harmonics. The reflection coefficient, S11 is -38.75 dB at 2.45 GHz. The proposed antenna have suppressed the higher order harmonics effectively from -38.04 dB to -2.61 dB at 4.54 GHz and from -13.08 dB to -1.38 dB at 5.76 GHz. The prototype of the antenna is fabricated for the verification of the design. The simulated and measured results are found to be in a good agreement.

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A Novel Circular Slotted Microstrip-Fed Patch Antenna with three Triangle Shape Defected Ground Structure for Multiband Applications

Advanced Electromagnetics ◽

10.7716/aem.v7i3.717 ◽

2018 ◽

Vol 7 (3) ◽

pp. 56-63 ◽

Cited By ~ 2

Author(s):

A. Jaiswal ◽

R. K. Sarin ◽

B. Raj ◽

S. Sukhija

Keyword(s):

Patch Antenna ◽

Return Loss ◽

Impedance Matching ◽

Ground Plane ◽

Defected Ground Structure ◽

Ground Structure ◽

Resonant Frequencies ◽

Wireless Applications ◽

Rectangular Patch ◽

Miniaturized Antenna

In this paper, a novel circular slotted rectangular patch antenna with three triangle shape Defected Ground Structure (DGS) has been proposed. Radiating patch is made by cutting circular slots of radius 3 mm from the three sides and center of the conventional rectangular patch structure and three triangle shape defects are presented on the ground layer. The size of the proposed antenna is 38 X 25 mm2. Optimization is performed and simulation results have been obtained using Empire XCcel 5.51 software. Thus, a miniaturized antenna is designed which has three impedance bandwidths of 0.957 GHz, 0.779 GHz, 0.665 GHz with resonant frequencies at 3.33 GHz, 6.97 GHz and 8.59 GHz and the corresponding return loss at the three resonant frequencies are -40 dB, -43 dB and -38.71 dB respectively. A prototype is also fabricated and tested. Fine agreement between the measured and simulated results has been obtained. It has been observed that introducing three triangle shape defects on the ground plane results in increased bandwidth, less return loss, good radiation pattern and better impedance matching over the required operating bands which can be used for wireless applications and future 5G applications.

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Multiband and Miniaturized dual layer Antenna incorporated with FSS and DGS

Advanced Electromagnetics ◽

10.7716/aem.v7i1.534 ◽

2018 ◽

Vol 7 (1) ◽

pp. 1-6 ◽

Cited By ~ 2

Author(s):

S. Sah ◽

M. R. Tripathy ◽

A. Mittal

Keyword(s):

Wireless Communication ◽

Frequency Selective Surfaces ◽

Printed Antenna ◽

Defected Ground Structure ◽

Patch Area ◽

Ground Structure ◽

X Band ◽

Type Frequency ◽

Frequency Selective

A novel dual layer rectangular printed Antenna based on loop type Frequency selective surfaces with five concentric rings and I shaped defected ground structure (DGS) is designed and investigated. The deigned antenna is tested for application in C band, WiFi devices and some cordless telephones and X band radiolocation, airborne and naval radars as multiband operational frequencies are at 5.5GHz, 6.81GHz, 9.3GHz and thus covers two wireless communication band C Band (4 to 8GHz ) and X band (8 to 12 GHz) The bandwidth is 200MHz, 300MHz and 1GHz respectively and measured gain of this designed antenna are 2.42dBi against 5.5GHz, 2.80dBi against 6.81GHz, 6.76dBi against 9.3GHz. The proposed antenna in addition to multiband operation also exhibits minituarization.The Floquet port technique is used to analyse concentric rings. The Results comparison of proposed structure with the basic dual layer antenna resonaing at 5.5GHz shows the patch area is reduced by 58.15% while the volume of the antenna is reduced by 81.5%.

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