Analysis and design of a passive spatial filter for sub-6 GHz 5G communication systems

Kapoor, Ankush; Kumar, Pradeep; Mishra, Ranjan

doi:10.1007/s10825-021-01742-3

Cited by 14 publications

(5 citation statements)

References 31 publications

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“…The value of C 1 is extracted from the equation (3). The value of C 2 is evaluated from the interaction of inner circular loop having effective width w 2 and the outer circular loop of width w 1 with a space between the two loops as g 2 as shown in the equation (6). The value of C 3 is calculated from equation (7) and it signifies the value attained by the capacitive reactance of the inner circular loop (multiplied by an amplification factor of 10 due to its high influence).…”

Section: Equivalent Circuit Model (Ecm) Synthesis Techniquementioning

confidence: 99%

“…The initial diameter of the inner loop was fixed to 7mm as per the ECM synthesis technique. The parametric optimizations were carried out for reporting the effect of variation of inner loop diameter and illustrated in the figure (6). It is clearly visible that as we increase the diameter of inner loop, the designed FSS structure starts exhibiting another resonant frequency at around 4 GHz and this reduces overall transmission bandwidth in sub-6 GHz spectrum.…”

Section: Effect Of Variation Of Diameter Of the Inner Loopmentioning

confidence: 99%

“…FSSs exhibit a wide range of functions due to which it has been used for a long time at frequencies ranging from microwave to terahertz [5]. These structures can be employed for enhancing radiation response [6], using a polarization converter [7], filters [8]- [9], radar absorbing materials [10] and many other applications [11]- [13]. Electromagnetic interference reduction is one of the most common applications of FSS.…”

Section: Introductionmentioning

confidence: 99%

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Double Sided Wideband Concentric Ring Spatial Filters for Mid-Band 5G Devices

Kapoor¹,

Kumar

Mishra

2022

J. Phys.: Conf. Ser.

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This paper presents the methodology, development, and implementation of the double concentric ring band-pass frequency selective surface (FSS) based spatial filters. The filters are designed to improve the active responses of the 5G antennas by incorporating them as superstrate or as substrates. A comparable circuit model is used to anticipate the resonant frequency bands required for predicting the FSS band-pass behavior. The designed spatial filter is composed of a combination of periodic circular loop structures engraved on both sides of a thin dielectric substrate. The proposed design of a double circular loop FSS exhibits band-pass characteristics for n77, n78, and n79 bands of the mid-band 5G spectrum (ranging from 3 GHz - 6 GHz) and provides insensitivity to polarization angles of the incident plane wave. The computed, simulated, and measured findings are all depicting a similar pattern that validates our structure.

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Section: Equivalent Circuit Model (Ecm) Synthesis Techniquementioning

confidence: 99%

Section: Effect Of Variation Of Diameter Of the Inner Loopmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Double Sided Wideband Concentric Ring Spatial Filters for Mid-Band 5G Devices

Kapoor¹,

Kumar

Mishra

2022

J. Phys.: Conf. Ser.

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“…These filters include a built-in frequency selection that improves the radiation performance of a radiator. Frequency selective surfaces (FSS) have attracted a lot of attention in recent years as a method of constructing spatial filters because they may impart filtering features in the spatial domain [1][2][3][4][5]. Recent study has sought to build and promote a square shaped loop, circumferential ring, ellipsoid, hexagonal geometry, and a cross dipole as geometric patterns that might be employed in the electromagnetic spectrum [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Modelling of Wideband Concentric Ring Frequency Selective Surface for�G燚evices

Kapoor¹,

Kumar²,

Mishra³

2023

Computers, Materials &Amp; Continua

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Frequency selective surfaces (FSSs) play an important role in wireless systems as these can be used as filters, in isolating the unwanted radiation, in microstrip patch antennas for improving the performance of these antennas and in other 5G applications. The analysis and design of the double concentric ring frequency selective surface (DCRFSS) is presented in this research. In the sub-6 GHz 5G FR1 spectrum, a computational synthesis technique for creating DCRFSS based spatial filters is proposed. The analytical tools presented in this study can be used to gain a better understanding of filtering processes and for constructing the spatial filters. Variation of the loop sizes, angles of incidence, and polarization of the concentric rings are the factors which influence the transmission coefficient as per the thorough investigation performed in this paper. A novel synthesis approach based on mathematical equations that may be used to determine the physical parameters of DCRFSSbased spatial filters is presented. The proposed synthesis technique is validated by comparing results from high frequency structure simulator (HFSS), Ansys electronic desktop circuit editor, and an experimental setup. Furthermore, the findings acquired from a unit cell are expanded to a 2 × 2 array, which shows identical performance and therefore proves its stability.

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“…Due to their multiple advantages, slot antennas have been used in a wide range of applications. Various slot designs etched on the antenna have been studied, with the bonus of providing suitable bandwidth modifications [5][6][7][8][9]. The authors suggest a 5.8 GHz ISM band ultra-wideband antenna designed around the ground layer [10,11].…”

Section: Introductionmentioning

confidence: 99%