Design and analysis of defected ground structure transformer for dual‐band antenna

Choi, Wai‐Wa; Chang, K. W.; Leong, Chon Chio; Cheong, Pedro; Tam, Kam Weng

doi:10.1049/joe.2014.0275

Cited by 6 publications

(2 citation statements)

References 9 publications

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“…The proposed antenna consists of square fractal patch on simple microstrip antenna where 4 × 5 order metasurface has been introduced just opposite to the patch. The partially ground plane and metasurface lie on the same plane in which the metasurface consists of combination of two L‐type patches at the outer of the unit cell along with centered C‐type patch. Here the unit cells are arranged in such a way that it supports the homogeneity properties of metamaterial .…”

Section: Design Of the Antennamentioning

confidence: 99%

A modified fractal‐shaped slotted patch antenna with defected ground using metasurface for dual band applications

Samantaray

Bhattacharyya

Srinivas

2019

Int J RF Microw Comput Aided Eng

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A novel modified fractal‐shaped slotted patch antenna employing metasurface at bottom plane along with partial ground has been proposed in this work for dual band applications with significant gain. A 4 × 5 order metasurface has been formed in the ground plane by introducing a periodic combination of two L‐type patches with centered C‐type shaped patch. The top conductor and the ground plane are designed on a 1.6 mm thick FR4 dielectric with the dimension of 28 × 28 mm2. The antenna is designed in such a way that it operates over the dual frequency ranges viz., 1.80 to 5.70 GHz and 10.38 to 10.94 GHz. The maximum return loss of 21 dB has been achieved over 2.60 GHz while the maximum realized gain of 7.16 dBi has been obtained at 10.92 GHz. The designed antenna offers omnidirectional radiation characteristics in the first band while directional radiation characteristics have been observed in the second band. The proposed antenna can be utilized for WiMAX 3.5/5.5 GHz, mobile, radio astronomy, and microimaging in medical analysis.

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Section: Design Of the Antennamentioning

confidence: 99%

A modified fractal‐shaped slotted patch antenna with defected ground using metasurface for dual band applications

Samantaray

Bhattacharyya

Srinivas

2019

Int J RF Microw Comput Aided Eng

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“…[1][2][3][4][5][6] The electromagnetic band gap (EBG) and defected ground structure (DGS), or other metamaterials, has demonstrated a good potential in antenna to reduce size or improve efficiency, or achieve other performance. [7][8][9][10][11][12][13][14][15][16][17][18][19] Among these structures, EBG structure is widely applied in antenna systems. Combining reconfigurable antenna technology with EBG, a series of limitations existing in the conventional schemes have been broken through, and some high performance antennas have been developed.…”

Section: Introductionmentioning

confidence: 99%

Integrated design of large and medium‐sized low profile frequency reconfigurable antenna array

Deng

Ding

et al. 2021

Int J RF Microw Comput Aided Eng

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In this paper, in order to solve the limitations of conventional technology schemes, a new scheme for large and medium-sized frequency reconfigurable antenna array (FRAA) with low profile is proposed by combining advanced technologies such as new electromagnetic materials, reconfigurable antenna and integrated design. The proposed FRAA operating in X and Ku bands consists of a 4 × 4 antenna array, a w ide-band feed network, a dual-band electromagnetic band gap (EBG) plate and integrated bias network. The distance between antenna array and reflective plate has been reduced by 80.0% by applying an EBG structure. The influence of bias network on antenna performance is effectively reduced, and the performance of X/Ku two-band antenna is ensured through the integrated optimization design of the bias network, EBG reflector plate and antenna array. Both simulation and test results show that the proposed FRAA has good performance.

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Consideration of Engineered Ground Planes for Planar Antennas: Their Effects and Applications, a Review

Dwivedy

2022

IEEE Access

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In this article, the significance of engineered ground planes in microstrip antennas and the effects of various configurations for the enhancements of the characteristics like isolation, cross-polarization levels, bandwidth and size reduction are vividly analyzed. These defects are classified and compared based on different applications and some important conclusions have been derived to infer a clear idea about its implementations as well as design considerations. The basic objective of this article is to motivate the readers and make them understand how this simple technique can be utilized to achieve various complex requirements of antennas needed for many contemporary as well as upcoming technologies like 5G, massive MIMO, IoT, Millimeter-wave communications by taking care of all the above parameters.INDEX TERMS compact, DGS, harmonic, multiband, wideband. I. INTRODUCTION F OR two decades there always has been an accelerating demand, in both commercial and the defence sectors, for antennas with various desirable attributes like compact size, easy to fabricate, multi-band or broadband, higherorder harmonic suppression and enhanced radiation properties. Multiple approaches have evolved over the years, among which the engineered ground planes, popularly known as defected ground structures (DGS) have been utilized most effectively to accomplish one or more of these design attributes. The application of electromagnetic bandgap (EBG) or photonic band-gap (PBG) structures are very common in microwave filters, couplers and antennas due to their bandstop characteristics that prohibit the propagation of electromagnetic waves in a specific frequency range. DGS is a special class of EBG structures that have a well governable transmission zero characteristic and this is managed by introducing necessary filtering actions through etching. In this article, a comprehensive analysis of various engineered ground planes used in microstrip antennas are presented. Different types of ground perturbation techniques, their chronological adavancements, effects of the shapes on different parameters and their applications are summarized. The prime objective of this article is to introduce this fascinating technique to the designers and guide them in selecting appropriate ground alteration technique to achieve desired antenna performance. 28 II. ENGINEERED GROUND PLANES: THE CONCEPT 29 EBG structures, the origin of DGS [1]; are artificial periodic 30 structures of metallic [2], dielectric [3] bodies with a lattice 31 period λ g /2 and exhibit a peculiar characteristic of allowing 32 the EM wave to propagate through a range of frequencies 33 (pass-band) while restricting the propagation over a range 34 called stop-band. Generally, a microstrip transmission line 35 shows bandpass characteristics whereas a microstrip line 36 placed on an artified ground plane shows stopband(s) in its 37 transmission characteristics. Any deformity created in the 38 ground plane of the microstrip line/antenna alters its current 39 distribution and thus increa...

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Design and analysis of defected ground structure transformer for dual‐band antenna

Cited by 6 publications

References 9 publications

A modified fractal‐shaped slotted patch antenna with defected ground using metasurface for dual band applications

A modified fractal‐shaped slotted patch antenna with defected ground using metasurface for dual band applications

Integrated design of large and medium‐sized low profile frequency reconfigurable antenna array

Consideration of Engineered Ground Planes for Planar Antennas: Their Effects and Applications, a Review

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