Evaluating directivity and spacing height relationship of radome structure for miniaturized triband patch antenna

Dwivedi, Surabhi; Mishra, Vivekanand; Kosta, Y.P.

doi:10.1109/nuicone.2013.6780125

Cited by 2 publications

(5 citation statements)

References 16 publications

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“…Several structures have been proposed to simulate materials with a dielectric or a magnetic plasma frequency or even both together (always using nonmagnetic conducting structures) [36]. The ideas developed here have been applied in the microwave domain of the frequency band 1-4 GHz to realize a directive emitter using metallic grids [37].…”

Section: Plasma Frequencymentioning

confidence: 99%

“…Analytically solving the equation of directivity is advantageous as it saves the simulation time of the software and produces exact value of the same as the function of spatial height. The same concept is explained in detail in [37]. Moreover, the advantage of formulating analytical formula is that for a number of discrete points of spatial height, value of directivity can easily be calculated.…”

Section: Calculation For Directivity and Spatial Height Relationshipmentioning

confidence: 99%

“…Moreover, the advantage of formulating analytical formula is that for a number of discrete points of spatial height, value of directivity can easily be calculated. The graph of directivity versus spatial height is shown in [37], which depicts the ideal behavior of the proposed structure.…”

Section: Calculation For Directivity and Spatial Height Relationshipmentioning

confidence: 99%

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Directivity enhancement of miniaturized microstrip patch antenna using metamaterial cover

Dwivedi

Mishra

Kosta

2015

JAE

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The variation in the spacing height of a metamaterial cover over the slotted patch antenna is reported to improve its directivity. HFSS software is used for simulations. An antenna is designed with a metamaterial cover to work in three bands within the frequency range of 1-4 GHz. A comparative result analysis of the effect of varying the spatial height of the metamaterial cover over patch antenna is shown theoretically. The proposed novel slotted patch antenna design has triband operation in the frequency range of 1-4 GHz with the miniaturized overall antenna size of the dimension 52.5 mm × 36.5 mm × 1.56 mm, that is equivalent to miniaturized design reported to our knowledge so far. For the very first time, the concept of Newton's divided difference method is applied for evaluating the performance parameters of the antenna. A global formula is developed to indicate the relationship of the directivity with the spatial height. The designed model has various applications in the field of satellite, aeronautical and optical communications mainly in the frequency range of L and S band.

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Section: Plasma Frequencymentioning

confidence: 99%

Section: Calculation For Directivity and Spatial Height Relationshipmentioning

confidence: 99%

See 1 more Smart Citation

Directivity enhancement of miniaturized microstrip patch antenna using metamaterial cover

Dwivedi

Mishra

Kosta

2015

JAE

Self Cite

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“…Given a set of n + 1 data points where no two x i are same, then the interpolation polynomial in the Newton's form is a linear combination given in equation 1. Furthermore the calculation of the divided differences becomes considerably simpler if the values of x i are distributed equidistantly [23].…”

Section: Introductionmentioning

confidence: 99%

“…The analytical value exactly matches with the computed value because there are three data points available using which one can approximate any data exactly up to second degree polynomial. Moreover, the advantage of formulating analytical formula is that for a number of discrete points of spatial height the value of directivity can be calculated in [23][24][25] .…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of radome structure

Dwivedi

Mishra

Kosta

2014

2014 2nd International Conference on Emerging Technology Trends in Electronics, Communication and Networking

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This paper presents the design issues, modeling, fabrication and characterization of a radome structure, a metamaterial cover over the slotted patch antenna for triband operation with center frequency 2.45 GHz. The dimensions of the slots patterned over the patch antenna are designed to control the lower resonant frequency and the bandwidth. The paper presents the selection of the best optimized dimensions of the slotted patch antenna and metamaterial cover to control the resonant frequencies and bandwidth of the antenna. The experimental results are presented thoroughly and compared with the analytical calculations. An analytical method, Newton's divided difference method is utilized to predict the features of the simulation results, implying that within a certain frequency range, the spatial height of the metamaterial cover can be adjusted for maximum directivity attainment. Negative value of permittivity and permeability are obtained due to the use of metametarial cover over the patch antenna. S-parameters, directivity and radiation patterns as performance matrices are obtained using the software tool High Frequency Structure Simulator version 11. These parameters are used to retrieve the effective permittivity and permeability. Numerous simulations have been carried out for different heights of the cover from the patch antenna in the microwave regime. The optimally simulated structure is proposed for the application of metamaterials as antenna cover to primarily enhance directivity by minimizing its refractive index in negative regime. Further design includes review and critical discussions on the effect of using different substrate materials for the patch antenna.

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Evaluating directivity and spacing height relationship of radome structure for miniaturized triband patch antenna

Cited by 2 publications

References 16 publications

Directivity enhancement of miniaturized microstrip patch antenna using metamaterial cover

Directivity enhancement of miniaturized microstrip patch antenna using metamaterial cover

Fabrication and characterization of radome structure

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