An effective technique based on off‐set fed patch to enhance the bandwidth of microstrip planar antenna

Azim, Rezaul; Aldhaheri, Rabah W.; Sheikh, Muntasir; Islam, Mohammad Tariqul

doi:10.1002/mop.29772

Cited by 11 publications

(13 citation statements)

References 15 publications

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“…The proposed UWB monopole antenna is compared with other UWB planar antennas reported in the literature as shown in Table . It is found from the comparison table that apart from the miniaturized UWB antennas reported in References , the proposed antenna provides a well‐balanced trade‐off between size and impedance bandwidth in comparison with other state‐of‐the arts UWB antennas reported in References .…”

Section: Resultsmentioning

confidence: 90%

“…Channel capacity loss (CCL) is the upper threshold of data rate at which signal can be constantly transmitted without incurring significant error. 23 Mathematically, CCL can be defined by Equation (5). 24 For practical MIMO antenna operation, it is expected that the CCL of a MIMO antenna should lie below 0.4 bps/Hz.…”

Section: Mimo Antenna Designmentioning

confidence: 99%

“…With the advent of portable devices, the demand for antennas that can be easily integrated in host devices has increased. Several compact UWB antennas are reported in the literature . By using metamaterial, multi‐slit patches, EBG structure, square ring resonator, and octagonal patch radiator, various UWB antennas have been reported in the past.…”

Section: Introductionmentioning

confidence: 99%

“…In References and , DGS is used to enhance impedance bandwidth but the reported antennas are excited by co‐axial probe. Besides, the size of the antenna in Reference is 60 × 60 × 1.575 mm 3 which tends to be larger compared to other compact UWB antennas in the literature …”

Section: Introductionmentioning

confidence: 99%

“…Besides, the size of the antenna in Reference 18 is 60 × 60 × 1.575 mm 3 which tends to be larger compared to other compact UWB antennas in the literature. [2][3][4][5][6][7][8] In this letter, bandwidth enhancement of a compact microstrip fed printed monopole antenna is proposed by using DGS. By placing two simple slits and a notch in optimum places of the ground, higher corner frequency of the antenna is extended to 11.5 GHz from 8 GHz.…”

Section: Introductionmentioning

confidence: 99%

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A DGS monopole antenna loaded with U‐shape stub for UWB MIMO applications

Hasan

Chu

Bashir

2019

Micro & Optical Tech Letters

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A defected ground structure‐based rectangular monopole antenna along with 2 × 2 and 4 × 4 multiple‐input multiple‐output (MIMO) antennas are presented. The proposed monopole antenna consists of a defected ground structure with two slits and a notch placed at optimum positions to increase the impedance bandwidth. Besides, the radiator is loaded with a U‐shape stub to improve the impedance matching of the antenna. The measured impedance bandwidth of the proposed monopole antenna is from 3.18 to 11.5 GHz. Time domain experiment is carried on to investigate the dispersion characteristics of the proposed antenna. Measurement results reveal that the proposed antenna can retain the transmitted pulse shape, ensuring dispersion‐free communication. Far‐field measurements confirm omnidirectional radiation patterns over the operating bandwidth. Moreover, MIMO performance of the proposed 2 × 2 and 4 × 4 antenna arrays are evaluated based on isolation, envelop correlation coefficient, diversity gain, and channel capacity loss. The proposed single monopole and MIMO versions of this antenna can be used in portable UWB communication devices.

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Section: Resultsmentioning

confidence: 90%

Section: Mimo Antenna Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A DGS monopole antenna loaded with U‐shape stub for UWB MIMO applications

Hasan

Chu

Bashir

2019

Micro & Optical Tech Letters

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Design and analysis of a super compact UWB antenna for accurate detection of breast tumors using monostatic radar‐based microwave imaging technique

Grover

Singh

Sahu

2023

Int J Imaging Syst Tech

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This article proposes a low‐profile ultra‐wideband (UWB) antenna for breast tumor detection using the monostatic radar‐based microwave imaging (RBMI) technique. The proposed UWB antenna consists of a circular patch and ground plane along with a modified tapered feed line having a total size of 13 × 9 × 1.6 mm3. The designed antenna operates from 4 to 11 GHz based on a −10 dB reflection coefficient with a peak gain of 9.5 dBi at 4.8 GHz. Experimental validation is carried out after fabricating the prototype of the UWB antenna and the breast mimic. The measured backscattered signals are captured using the vector network analyzer (E‐5063A) by keeping the antenna at 10 mm from the breast phantom. After that, post‐processing of the measured data is done to detect the exact depth and location of the malignant tissue. The proposed antenna uses UWB band frequency of operation because it has some unique features, that is, it provides immunity to multipath fading, has a simple design, has a low cost of fabrication, and has biological friendliness. Moreover, due to the proposed antenna's resonance at a lower resonant frequency better depth of penetration is achieved in human body phantoms and the proposed antenna provides specific absorption rates (SAR) of 0.877 W/kg over 1 g of tissue at 4.8 GHz, which is an acceptable limit for SAR as per FCC guidelines. Therefore, the proposed antenna and monostatic RBMI technique are good candidates for breast tumor detection.

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“C” shaped dual polarized dielectric resonator antenna for the microwave imaging of breast tumor using beam‐forming algorithms

Kaur

2022

Int J RF Mic Comp-Aid Eng

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In this article, an ultra‐wideband (UWB) monostatic radar based microwave imaging (MWI) approach is proposed to detect the presence and localize the position of breast tumor in women (usually greater than 45 years of age). For this purpose, a “C” shaped elliptically polarized DRA (dielectric resonator antenna) with an impedance bandwidth of 7.3 GHz (i.e., 3.4–10.7 GHz) covering the UWB has been proposed as a sensor to record the backscattered S parameter signals from the breast tissues. This is done by rotating the proposed DRA in monostatic radar configuration around the breast phantom with an interval of 30° in elevation (0–180) and azimuthal planes (0–360), respectively. The recorded “S” parameter data is then processed using beam‐forming algorithms namely delay and sum (DAS), improved delay and sum (IDAS), delay multiply and sum (DMAS) to form 2D images of the breast tumor and locate its position (using MATLAB R 2013a). The design and simulation of the entire set up that includes the C shaped UWB DRA & Bio media (breast phantom) is done using CST MWS V'17. The fabrication of the proposed DRA is carried out using wet etching and water jet cutting process. The physical model of the Bio media is prepared using gelatin (skin), petroleum‐jelly (fat), and wheat‐flour (tumor). The validation of antenna radiation parameters is done using a VNA (vector network analyzer) model no. E5063A and good agreement between the simulated and measured results is observed. The proposed C shaped DRA is used in a monostatic radar based configuration to collect “S” parameters and the data is processed in a GPU to reconstruct a 2D image of the scanned breast phantom area. The size and detected location of tumor using beam‐forming is also close to the actual physical location of tumor with an error of 6.2% from the actual tumor location.

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An effective technique based on off‐set fed patch to enhance the bandwidth of microstrip planar antenna

Cited by 11 publications

References 15 publications

A DGS monopole antenna loaded with U‐shape stub for UWB MIMO applications

A DGS monopole antenna loaded with U‐shape stub for UWB MIMO applications

Design and analysis of a super compact UWB antenna for accurate detection of breast tumors using monostatic radar‐based microwave imaging technique

“C” shaped dual polarized dielectric resonator antenna for the microwave imaging of breast tumor using beam‐forming algorithms

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