scholarly journals Wearable Textile Patch Antenna for Medical Applications

2019 ◽  
Vol 9 (2S3) ◽  
pp. 44-47
Keyword(s):  
Dielectric Constant ◽  
Patch Antenna ◽  
Return Loss ◽  
Polyester Fabric ◽  
Slot Antenna ◽  
Wearable Antennas ◽  
Rectangular Patch ◽  
Denim Fabric ◽  
Conductive Textile ◽  
Rectangular Microstrip Antenna

In recent years of electronics industrialization, antennas are more popular components; wearable antennas play an important role due to their properties such as wireless communication and miniaturization. The design of wearable antennas have distinction in the area of antenna design and development, in this paper a thorough study had been carried out wearable antennas blended with textile, which has significant dielectric constant. This work describes the design a textile antenna, namely, a rectangular microstrip patch antenna and then rectangular with U-slot antenna with slits. After designing two kinds of antennas, a comparison will be made between their results. Conductive textile, a copper-plated polyester fabric, will be used for fabricating antenna radiators and grounds. An insulating denim fabric with dielectric constant 1.7 with a thickness of 0.7 is used for preparing the substrates. The proposed antenna is designed and all the results will calculated using Ansoft HFSS Software. After evaluating the results of a rectangular microstrip antenna and U-slot Antenna on textile substrate, the rectangular patch resonate at 2.5 GHz with the return loss of -16.86dB and the U-slot Antenna resonated at 2.2 GHz with return loss of -41.68dB and 3.9 GHz return loss of -16.16dB.

scholarly journals Designs of Textile Antenna Arrays for Smart Clothing Applications

2018 ◽  
Vol 18 (3) ◽  
pp. 295-307 ◽  
Author(s):  
Kuo-Sheng Chin ◽  
Chi-Sheng Wu ◽  
Chien-Lung Shen ◽  
Kun-Chuan Tsai
Keyword(s):  
Antenna Arrays ◽  
Patch Antenna ◽  
Polyester Fabric ◽  
Superior Performance ◽  
Slot Antenna ◽  
Annular Slot ◽  
Smart Clothing ◽  
Textile Antenna ◽  
Performance Deterioration ◽  
Conductive Textile

Abstract In this work, three designs of textile antennas, namely, a rectangular microstrip patch antenna, annular slot antenna, and planar inverted-F antenna (PIFA), operating in the 2.45 GHz WLAN band were developed for smart clothing applications. Conductive textile, a copper-plated polyester fabric, was used for fabricating antenna radiators and grounds. An insulating neoprene fabric with a thickness of 4 mm and a permittivity of 1.5 was used for preparing the substrates. The textile patch antenna achieved a maximum gain of 5.96 dBi and a bandwidth of 4.6%. The annual slot antenna showed a moderate gain and bandwidth of 2.9 dBi and 13.1%, respectively. The PIFA achieved the widest bandwidth of 31% but the smallest gain of 1.2 dBi. Furthermore, the performance deterioration of the proposed antennas under various bending conditions was analyzed to evaluate their suitability for wearable applications. Moreover, two 2 × 2 patch and slot antenna arrays were assembled to increase gain and bandwidth. The measured results proved that the developed antenna designs provide superior performance.

scholarly journals A Study on Dual-band Microstrip Rectangular Patch Antenna for Wi-Fi

2020 ◽  
Vol 16 ◽  
pp. 01-12
Author(s):  
Rabnawaz Sarmad Uqaili ◽  
Junaid Ahmed Uqaili ◽  
Sidrish Zahra ◽  
Faraz Bashir Soomro ◽  
Ali Akbar
Keyword(s):  
Dielectric Constant ◽  
Patch Antenna ◽  
Patch Size ◽  
Return Loss ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Dual Band ◽  
Microstrip Patch ◽  
Rectangular Patch ◽  
802.11 Wlan

This paper presents the design of a dual-band microstrip patch antenna for Wi-Fi that operates at 2.5 GHz and 5.8 GHz. The antenna contains a rectangular patch with two rectangular slots. The first slot is incorporated in the patch while the second slot is incorporated in the ground plane. The antenna is based on a microstrip fed rectangular patch printed on the FR-4 epoxy substrate with a dielectric constant of 4.4 and a thickness of 1.6 mm with patch size 24 mm × 21 mm. The simulated result shows that the realized antenna successfully works on dual-band and subsequently achieves a bandwidth of 100 MHz and 200 MHz as well as the return loss about -29.9 dB and -15.16 dB for 2.5 GHz and 5.8 GHz respectively. A stable omnidirectional radiation pattern is observed in the operating frequency bands. The antenna meets the required specifications for 802.11 WLAN standards.

scholarly journals A Novel Circular Slotted Microstrip-Fed Patch Antenna with three Triangle Shape Defected Ground Structure for Multiband Applications

2018 ◽  
Vol 7 (3) ◽  
pp. 56-63 ◽  
Author(s):  
A. Jaiswal ◽  
R. K. Sarin ◽  
B. Raj ◽  
S. Sukhija
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Impedance Matching ◽  
Ground Plane ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Resonant Frequencies ◽  
Wireless Applications ◽  
Rectangular Patch ◽  
Miniaturized Antenna

In this paper, a novel circular slotted rectangular patch antenna with three triangle shape Defected Ground Structure (DGS) has been proposed. Radiating patch is made by cutting circular slots of radius 3 mm from the three sides and center of the conventional rectangular patch structure and three triangle shape defects are presented on the ground layer. The size of the proposed antenna is 38 X 25 mm2. Optimization is performed and simulation results have been obtained using Empire XCcel 5.51 software. Thus, a miniaturized antenna is designed which has three impedance bandwidths of 0.957 GHz,  0.779 GHz, 0.665 GHz with resonant frequencies at 3.33 GHz, 6.97 GHz and 8.59 GHz and the corresponding return loss at the three resonant frequencies are -40 dB, -43 dB and -38.71 dB respectively. A prototype is also fabricated and tested. Fine agreement between the measured and simulated results has been obtained. It has been observed that introducing three triangle shape defects on the ground plane results in increased bandwidth, less return loss, good radiation pattern and better impedance matching over the required operating bands which can be used for wireless applications and future 5G applications.

scholarly journals Circle Microstrip Antenna Simulation for Frequency 3.5 GHz

2021 ◽  
Vol 1 (1) ◽  
pp. 1-4
Author(s):  
Wildan Wildan ◽  
Dwi Astuti Cahyasiwi ◽  
Syah Alam ◽  
Mohd Azman Zakariya ◽  
Harry Ramza
Keyword(s):  
Dielectric Constant ◽  
Patch Antenna ◽  
Microstrip Antenna ◽  
Microstrip Line ◽  
Return Loss ◽  
Tangent Loss ◽  
Substrate Thickness ◽  
Total Radiation ◽  
Circular Patch Antenna ◽  
Working Frequency

This research proposed microstrip circular patch antenna simulation at a working frequency 3500 MHz. The antenna has been designed using a Duroid RT5880 substrate with dielectric constant (εr) = 2.2, substrate thickness (h) = 1.575 mm, and tangent loss = 0.0009 with microstrip line feeding. The simulation result, return loss value obtained -26.385, VSWR value 1.09, gain value 7.64 dBi, total radiation efficiency value -0.6489 dB, and bandwidth value 72 MHz (3468.8 MHz – 3541.9 MHz).

scholarly journals 28 GHz Microstrip Patch Antennas for Future 5G

2018 ◽  
Vol 2 (4) ◽  
pp. 1-6
Author(s):  
Keyword(s):  
Wireless Networks ◽  
Antenna Array ◽  
Patch Antenna ◽  
Structure Design ◽  
Slot Antenna ◽  
Potential Candidate ◽  
Significant Activity ◽  
Microstrip Patch ◽  
Rectangular Patch ◽  
Compact Size

Recently, the industry and academia there is significant activity in research and development towards the next generation micro and Pico cellular wireless Networks (5th generation). This paper presents, a structure design of microstrip patch antenna array operate at the central frequency of 28 GHz waveband is proposed. The patch antenna array consists of four elements with rectangular patch and uniform distribution. It has a compact size of 26.51 x 20.37 mm with operating frequency at 28 GHz. The inset feed technique is used for the matching between radiating patch and the 50Ω microstrip feedline. The proposed 2x2 antenna array successfully improve the antenna gain up to 8.393dB compare to existing CRLH TL CPW antenna with 2.99 dB, wideband antenna with 7.1 dB and 3.7 dB for broadband elliptical-shaped slot antenna. As a conclusion, the directivity of 10.13 db and efficiency is higher than 80% considered as a potential candidate for the 5G wireless networks and applications.

scholarly journals A Reconfigurable Polarization—Frequency Supershape Patch Antenna with Enhanced Bandwidth

Electronics ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 1166
Author(s):  
Anastasios Koutinos ◽  
Georgia Xanthopoulou ◽  
George Kyriacou ◽  
Michael Chryssomallis
Keyword(s):  
Dielectric Constant ◽  
Patch Antenna ◽  
Reconfigurable Antenna ◽  
Vertical Polarization ◽  
Pin Diodes ◽  
Rectangular Patch ◽  
Dissipation Losses

In this article a reconfigurable antenna for WLAN/WiMAX applications is presented. A super-shape radiator of an ellipsis shape is used to achieve wider intrinsic bandwidth compared to the classical rectangular patch antenna, while the dimensions remain comparable. The proposed antenna is fed at two points exciting both horizontal and vertical polarization but in different operating frequencies. To achieve wider bandwidth, as a whole but also for each polarization, the symmetrical feeding points for each excitation are also employed with a proper feeding network. PIN diodes are also used in the feeding network to provide the option of narrower bandwidth. The antenna substrate is Rogers RO4003C with dielectric constant εr = 3.55 and dissipation losses tanδ = 0.0027 with height h = 1.524 mm. The antenna operates in the range of 2.3 GHz to 2.55 GHz but, using the proposed procedure, it can be designed for different frequency ranges.

UWB RECTANGULAR SLOTTED MICROSTRIP PATCH ANTENNA IN PROXIMITY OF HUMAN ARM MODEL

2016 ◽  
Vol 78 (5-4) ◽  
Author(s):  
Muhammad Syafiq Noor Azizi ◽  
Azahari Salleh ◽  
Adib Othman ◽  
Najmiah Radiah Mohamad ◽  
Nor Azlan Aris ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Patch Antenna ◽  
Free Space ◽  
Return Loss ◽  
Microstrip Patch Antenna ◽  
Ultra Wideband ◽  
Uwb Antenna ◽  
Study Behavior ◽  
Microstrip Patch ◽  
Human Arm

In this paper, we study behavior of Ultra wideband antenna which is Rectangular Slotted Microstrip Patch Antenna. Then, the antenna operated in proximity of human arm model. Furthermore, the antenna is designed on a FR-4 substrate with dielectric constant of 4.3 and thickness 1.6 mm. This antenna simulated in CST Microwave Studio software. In order to test the antenna, an arm model was numerically modelled. The study shows properties and performances of antenna when it is placed in three situations which in free space, outside and inside of human arm model. The properties of UWB antenna in term of return loss, gain, directivity and radiation pattern in the three situations is simulated and discussed.

Circularly Polarized Rectangular Microstrip Patch Antenna with Finite Ground Plane

2015 ◽  
Vol 4 (2) ◽  
pp. 74
Author(s):  
Sanyog Rawat ◽  
Kamlesh Kumar Sharma
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Axial Ratio ◽  
Microstrip Patch Antenna ◽  
Simulation Software ◽  
Impedance Bandwidth ◽  
Circularly Polarized ◽  
Microstrip Patch ◽  
Rectangular Patch

<p class="Abstract"><span style="font-weight: normal;">In this paper a new geometry of patch antenna is proposed with improved bandwidth and circular polarization. The radiation performance of circularly polarized rectangular patch antenna is investigated by applying IE3D simulation software and its performance is compared with that of conventional rectangular patch antenna.</span> <span style="font-weight: normal;">Finite Ground truncation technique is used to obtain the desired results. The simulated return loss, axial ratio and smith chart with frequency for the proposed antenna is reported in this paper. It is shown that by selecting suitable ground-plane dimensions, air gap and location of the slits, the impedance bandwidth can be enhanced upto 10.15 % as compared to conventional rectangular patch (4.24%) with an axial ratio bandwidth of 4.05%.</span></p><p> </p><p> </p>

scholarly journals Inverted dual U slot loaded truncated microstrip patch antenna for wireless applications

2018 ◽  
Vol 7 (2.21) ◽  
pp. 151
Author(s):  
Kavitha Thandapani ◽  
Shiyamala Subramani
Keyword(s):  
Dielectric Constant ◽  
Resonant Frequency ◽  
Loss Tangent ◽  
Patch Antenna ◽  
Return Loss ◽  
Microstrip Patch Antenna ◽  
Wireless Applications ◽  
Microstrip Patch ◽  
Dielectric Constant And Loss ◽  
Circular Patch Antenna

Dual U Slot Loaded Truncated Microstrip Patch Antenna is designed for wireless applications. The proposed geometry comprised of two inverted U slots in truncated circular patch antenna operation covering 2.24 to 2.72 GHZ frequency bands are obtained. It is found that the slot and truncated is used to improve the bandwidth and return loss respectively. The resonant frequency is found to be 2.5GHZ. The bandwidth of the proposed antenna for lower and upper resonant frequency is found to be 19.2%. The proposed antenna is fed by 50Ω co-axial probe feed and simulated on Rogers RT/duroid5880 substrate.  Rogers RT/duroid 5880 substrate has dielectric constant and loss tangent of 2.2 and 0.0009 respectively. An air gap is used in this proposed design for tuning the desired frequencies and increasing the bandwidth. The antenna shows an acceptable gain of 2.1dB to 5.7dB with unidirectional pattern over the obtained frequency band. 

scholarly journals Metamaterial Loaded Rectangular Patch Antenna for Wireless Communication Application

2021 ◽  
Vol 9 (3) ◽  
pp. 193-197
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Negative Permittivity ◽  
Electromagnetic Analysis ◽  
Analysis Tool ◽  
Network Analyzer ◽  
Microstrip Patch ◽  
Rectangular Patch

In this paper, a metamaterial based compact multiband rectangular microstrip patch antenna is proposed. The return loss of metamaterial loaded microstrip patch antenna obtained at the resonant frequency 2.4GHz. The metamaterial structure printed on FR4 substrate at hight of 1.6mm from the ground plane. The FR4 substrate has 4.4 dielectric constant.These metamterial structures are periodic in nature and possesses negative permittivity and negative permeability. The greatest advantage of metamaterial loading will be miniaturization. This metamterial loaded rectangular patch antenna is simulated and tested using HFSS Simulator, where an electromagnetic analysis tool is used. The fabricated antennas results are measured using Vector Network Analyzer (VNA).

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