A novel compact fractal UWB antenna with dual band notched characteristics

Devana, V. N. Koteswara Rao; Satyanarayana, Vella; Lakshmi, A. Vijaya; Sukanya, Y.; Kumar, Ch. Manohar; Ponnapalli, V L N Phani; Kamili, Jagadeesh Babu

doi:10.1007/s10470-021-01958-0

Cited by 21 publications

(12 citation statements)

References 40 publications

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“…At higher frequencies, the amplitude of higher order modes increases, and the phase of the waves is not evenly distributed across the antenna's aperture. This results in a distorted radiation pattern [23]. proposed antennas in side-by-side and face-to-face configurations, is noticed to be less than −30 dB over the entire operating bandwidth.…”

Section: Resultsmentioning

confidence: 95%

Uwb Monopole Antenna With Dual Notched Bands Verified by Characteristic Mode Analysis (Cma)

Grandhi Venkata,

Kalva

2022

PIER C

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An ultra-wideband (UWB) antenna with dual band notched characteristics verified by characteristic mode analysis (CMA) is presented. The intended UWB radiator is etched on a Rogers RT5880 substrate with a size of 29 × 35 × 0.764 mm 3 , operating over a spectrum of 2.66-14.86 GHz with a fractional bandwidth (FBW) of 139%. Dual notched bands at WiMAX (3.01-3.63 GHz) and WLAN (4.48-5.85 GHz) are achieved by embedding L-shaped stubs in the notched rectangular patch. In addition, the two notched bands of the reported antenna are verified by using characteristic mode analysis (CMA) in terms of modal significance (MS) and characteristic angle (CA). The reported antenna's simulated and tested results are well matched to obtain S 11 , VSWR, stable radiation patterns, a stable peak gain of 2.65 to 3.6 dBi, and the maximum radiation efficiency of 97.86% in frequency domain, which make the intended radiator suitable for portable UWB applications.

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Section: Resultsmentioning

confidence: 95%

Uwb Monopole Antenna With Dual Notched Bands Verified by Characteristic Mode Analysis (Cma)

Grandhi Venkata,

Kalva

2022

PIER C

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“…The Sprocket gear wheel-shaped radiating patch defected by the arc and rectangular slots to accomplish two frequency band notches is presented in [ 11 ]. The fractal UWB antenna in [ 12 ] comprises an inverted S and a pair of L-shaped slots and stubs on the radiator to accomplish WLAN and X-band frequency notching. In [ 13 ], the WiMAX and WLAN frequency bands are filtered utilizing S and inverted U structure slots on the hexagonal patch and ground plane.…”

Section: Introductionmentioning

confidence: 99%

Characteristic Mode Analysis-Based Compact Dual Band-Notched UWB MIMO Antenna Loaded with Neutralization Line

2022

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The advancement of electronic gadgets makes it possible for a device to be multipurpose, which calls for attributes such as compactness and larger bandwidth, with improved data transfer rate. This paper introduces the compact, closely placed two-port dual band-notched UWB antenna using a neutralization line as a decoupling structure. The projected antenna design comprised a circle and rectangle embedded monopole radiator with the defected ground structure to attain the UWB spectrum. Further dual notches are attained by carving the U-shape and inverted U-shape slots on the feedline and radiator. The dual band-notched UWB antennas are placed with the separation of 3.8 mm (0.04 λ; λ is computed using 3.4 GHz frequency). The coupling effect between the close proximity elements is decoupled using the neutralization line. The presented antenna has overall dimensions of 21.5 × 28 × 1.6 mm3 (0.24 × 0.31 × 0.01 λ3) and exhibits S11 below −10 dB from 3.4–11.9 GHz, with isolation better than 16 dB throughout the impedance bandwidth. The antenna also provides frequency band rejection of 4.5–5.3 GHz and 7.2–9 GHz covering the WLAN and entire X-band satellite communication. The projected antenna is explored through characteristic mode analysis, time-domain characteristics, and MIMO diversity features to analyze the effectiveness and usefulness of the antenna. The group delay is less than 1 ns except for the frequency rejection band and fidelity factor greater than 0.96. The projected antenna exhibits MIMO diversity metrics ECC < 0.3, DG > 9.6 dB, MEG < −3 dB, TARC < −10 dB, CCL < 0.3 bps/Hz, and ME < −2 dB across the operational frequency, except for the notched bands. The designed two-port antenna is validated by printing on an FR4 substrate. The simulated and measured findings are in line with and appropriate for MIMO wireless applications.

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“…This is why MIS systems need UWB antenna sensors to operate. High-resolution images need a larger bandwidth [16] and short pulse durations [23] to avoid blurring. The radiator in MIS operates as a sensor that transmits and receives data.…”

Section: Introductionmentioning

confidence: 99%

“…The majority of printed-circuit UWB antenna designs are reported in the 3-10 GHz span, with very few designs persisting to cover higher frequencies such as the 3-30 GHz band, with promising applications in medical, air-bone intercept, radar, missile systems, and short-range tracking systems. The Ku band (12)(13)(14)(15)(16)(17)(18) is used for high resolution tracking and tracking the satellite within the bandwidths of approximately 12.87-14.43 GHz and the vehicular radar band (22)(23)(24)(25)(26)(27)(28)(29) [12]. As wireless system tools develop and use higher frequency ranges to provide higher data transfer, a UWB antenna with a frequency range far beyond the FCC-authorized band is required to monitor and enforce various standard compliances, such as EIRP, immunity tests, and interferences.…”

Section: Introductionmentioning

confidence: 99%

A Compact Novel SE-DGS Tapered-Fed Notched UWB Antenna Integrated with Ku/K band for Breast Cancer Detection

Ponnapalli

Karthikeyan

Narayana³

et al. 2022

Preprint

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A compact and novel semi-elliptical defected ground structure (SE-DGS) tapered microstrip line fed UWB antenna with band notched characteristics integrated with Ku and K band applications is proposed. The proposed SE-DGS UWB antenna is printed on a compact size of (15×18 mm2) and has an impedance bandwidth of 4.11-29.77 GHz, a fractional bandwidth of 152%, and both the down link of X- and ITU-8 bands are completely notched over a span of 6.86-9.09 GHz using a single C-structured reflector. The proposed antenna has a fluctuating gain of 1.7–4.82 dBi except for the gain at the notched band frequency, which is -12.25 dBi. The proposed antenna has a high radiation efficiency of 96.23%, stable radiation patterns over the UWB range, and a high rejection capability of the notched band, which is noticed from the high value of VSWR of 23.15, making it a potential candidate for UWB, Ku, and K band wireless applications with effectively suppressed downlink of X and ITU-8 bands. The developed antenna design simulates breast cancer tissue detection by comparing S21 outcomes, current densities, and specific absorption rates with and without tumour scenarios. These results suggest that the proposed radiator and system detect breast tumours efficiently.

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A novel compact fractal UWB antenna with dual band notched characteristics

Cited by 21 publications

References 40 publications

Uwb Monopole Antenna With Dual Notched Bands Verified by Characteristic Mode Analysis (Cma)

Uwb Monopole Antenna With Dual Notched Bands Verified by Characteristic Mode Analysis (Cma)

Characteristic Mode Analysis-Based Compact Dual Band-Notched UWB MIMO Antenna Loaded with Neutralization Line

A Compact Novel SE-DGS Tapered-Fed Notched UWB Antenna Integrated with Ku/K band for Breast Cancer Detection

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