Compact ellipse shaped patch with ground slotted broadband monopole patch antenna for head imaging applications

Talukder, Siam; Samsuzzaman, M.; Islam, Md. Tarikul; Azim, Rezaul; Mahmud, Zuria; Islam, Mohammad Tariqul

doi:10.1016/j.cjph.2021.05.005

Cited by 22 publications

(16 citation statements)

References 27 publications

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“…By using SatEnv software, the near field data are transformed into far field data. The antenna gain, efficiency, directivity and radiation pattern are also estimated using the SatEnv software using the far field data [ 32 , 33 ]. A good resemblance is found between the simulated and measured radiation patterns of the presented antenna.…”

Section: Resultsmentioning

confidence: 99%

Design Validation of UWB MIMO Antenna with Enhanced Isolation and Novel Strips for Stop-Band Characteristics

Khan

Feng

2022

Entropy

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This article introduces a novel Ultra Wide Band (UWB) Multiple Input Multiple Output (MIMO) antenna with Triple-band notched characteristics. The overall dimensions of the antenna are 18 × 34 mm2. The designed antenna has two similar flower-shaped radiators with L-shape strips, common ground with two flag-shaped decoupling stubs and T-shape strips for notched band characteristics. Two flag-shaped stubs are used to achieve 22 dB improved isolation. The S11 of the designed antenna is less than −10 dB between 3.07 GHz and 12.40 GHz, having various stopped bands of WiMAX, WLAN and X bands. The presented antenna is examined and investigated in terms of S-parameters, Mutual Coupling, Gain, Envelope Correlation Coefficient (ECC), Efficiency and Diversity Gain (DG).

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Section: Resultsmentioning

confidence: 99%

Design Validation of UWB MIMO Antenna with Enhanced Isolation and Novel Strips for Stop-Band Characteristics

Khan

Feng

2022

Entropy

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“…(iii) The acquired bandwidth spans 1.3 to 3.7 GHz, which is relatively wider than the reported antennas in the literature [ 10 , 22 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ]. (iv) In comparison with reported ranges in previously published work [ 22 , 24 , 27 , 30 , 31 ], the proposed antenna offeres an effective peak gain of over 6.15 dBi and an efficiency of over 90%. Additionally, (v) the maximum measured SAR value for the head model is constrained to be equal to or below 0.1409 W/kg over the entire usable frequency band, which is less than the values reported in the literature [ 24 , 25 , 28 , 31 ].…”

Section: Introductionmentioning

confidence: 87%

“…(ii) Its overall dimensions are 0.32 λ × 0.28 λ × 0.007 λ, where λ is the lower bandwidth 1.3 GHz frequency wavelength. (iii) The acquired bandwidth spans 1.3 to 3.7 GHz, which is relatively wider than the reported antennas in the literature [ 10 , 22 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ]. (iv) In comparison with reported ranges in previously published work [ 22 , 24 , 27 , 30 , 31 ], the proposed antenna offeres an effective peak gain of over 6.15 dBi and an efficiency of over 90%.…”

Section: Introductionmentioning

confidence: 90%

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Slotted Monopole Patch Antenna for Microwave-Based Head Imaging Applications

Alqahtani

Islam

Talukder

et al. 2022

Sensors

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A modified monopole patch antenna for microwave-based hemorrhagic or ischemic stroke recognition is presented in this article. The designed antenna is fabricated on a cost-effective FR-4 lossy material with a 0.02 loss tangent and 4.4 dielectric constant. Its overall dimensions are 0.32 λ × 0.28 λ × 0.007 λ, where λ is the lower bandwidth 1.3 GHz frequency wavelength. An inset feeding approach is utilized to feed the antenna to reduce the input impedance (z = voltage/current). A total bandwidth (below −10 dB) of 2.4 GHz (1.3–3.7 GHz) is achieved with an effective peak gain of over 6 dBi and an efficiency of over 90%. A time-domain analysis confirms that the antenna produces minimal signal distortion. Simulated and experimental findings share a lot of similarities. Brain tissue is penetrated by the antenna to a satisfactory degree, while still exhibiting a safe specific absorption rate (SAR). The maximum SAR value measured for the head model is constrained to be equal to or below 0.1409 W/kg over the entire usable frequency band. Evaluation of theoretical and experimental evidence indicates the intended antenna is appropriate for Microwave Imaging (MWI) applications.

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“…In one example of a rectangle-shaped patch with a full ground plane, two U-shaped slots are cut on the patch and a slanted slot is cut on the ground plane to get a compact and wideband antenna. However, for high-frequency portable device applications, it is not compact enough [ 10 ]. Two triangle-shaped structures, with triangle-shaped slots cut on both of them, are connected together at the base by a rectangular block to make a patch of a compact antenna, where the bandwidth is reported to be very poor [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Electric-Field-Coupled Resonator Antenna for 5G Applications

Rahman

Islam

et al. 2022

Materials

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In this paper, a compact wideband patch antenna comprising a modified electric-field-coupled resonator with parasitic elements is presented. The resonance at low frequency is achieved due to the electric field polarization along the split of the conventional LC (inductive-capacitive) structure. However, this antenna gives low bandwidth as well as low gain. Some evolutionary techniques are adopted to get a compact wideband antenna at 3GPP bands of 5G. The split width and the ground plane are modified to achieve enhanced bandwidth with good impedance matching, whereas the addition of the parasitic elements on both sides of the microstrip feed line enhances the gain with a slight reduction of bandwidth. The compact dimension of the proposed antenna is 0.26 λL × 0.26 λL × 0.017 λL, where λL is the free space wavelength at the lowest frequency. A prototype of the presented design is fabricated and measured. Measurement shows that the antenna has an operating bandwidth of 19.74% for |S11| < −10 dB where the gain of 1.15 dBi is realized. In addition, the radiation pattern is omnidirectional in the horizontal plane and dumbbell shaped in the elevation plane. The cross-polarization levels in both planes are less than −12 dB.

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Compact ellipse shaped patch with ground slotted broadband monopole patch antenna for head imaging applications

Cited by 22 publications

References 27 publications

Design Validation of UWB MIMO Antenna with Enhanced Isolation and Novel Strips for Stop-Band Characteristics

Design Validation of UWB MIMO Antenna with Enhanced Isolation and Novel Strips for Stop-Band Characteristics

Slotted Monopole Patch Antenna for Microwave-Based Head Imaging Applications

Electric-Field-Coupled Resonator Antenna for 5G Applications

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