scholarly journals A Novel Shape Compact Antenna for Ultrawideband Applications

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Saad Hassan Kiani ◽  
Xin Cheng Ren ◽  
Muhammad Rizwan Anjum ◽  
Khalid Mahmood ◽  
Haider Ali ◽  
...  
Keyword(s):  
Communication Systems ◽  
Ground Plane ◽  
Performance Parameters ◽  
Relative Thickness ◽  
Radiation Characteristics ◽  
Compact Antenna ◽  
Uwb Applications ◽  
Peak Gain

Nowadays, more attention has been given into ultrawideband by dint of its extraordinary features over narrowband communication systems. This study presents a novel compact with tilted square frames shape antenna with partial ground plane. The proposed antenna is printed on commercially available Fr4 substrate with relative thickness of 1.6 mm. The antenna has compact dimensions of 14 × 18 mm2 with bandwidth ranging from 3.3 to 11.5 GHz. The peak gain obtained is 1.4 dBi with omnidirectional radiation characteristics throughout the entire bandwidth. The proposed antenna is fabricated, and the developed prototype measured results, which well agree with simulated results. With the performance parameters obtained and the well agreed measured results, the proposed antenna is well suitable for Wi-Fi, ISM, and UWB applications.

scholarly journals A Compact Vivaldi Shaped Partially Dielectric Loaded TEM Horn Antenna for UWB Communication

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Mustafa İlarslan ◽  
A. Serdar Türk ◽  
Salih Demirel ◽  
M. Emre Aydemir ◽  
A. Kenan Keskin
Keyword(s):  
Communication Systems ◽  
Horn Antenna ◽  
High Gain ◽  
Simulation Software ◽  
Antenna Structure ◽  
Horn Antennas ◽  
Compact Antenna ◽  
Uwb Antennas ◽  
Tem Horn ◽  
Uwb Applications

Ultrawideband (UWB) antennas are of huge demand and Vivaldi antennas as well as the TEM horn antennas are good candidates for UWB applications as they both have relatively simple geometry and high gain over a wide bandwidth. The aim of this study is to design a compact antenna that achieves maximum gain over a bandwidth between 1.5 and 10.6 GHz while minimizing its size. The idea is to make use of combined respective advantages of Vivaldi and TEM horn antennas to achieve the desired goals by shaping the TEM horn antenna to look like a Vivaldi antenna. The antenna structure is modified by a dielectric load in the center to increase the gain bandwidth. It is placed in a surrounding box made of PEC material to reduce the undesired side lobes and to obtain more directive radiation pattern. The simulations are performed by using the CST STUDIO SUITE electromagnetic (EM) simulation software and they are later verified by the actual measurements. The Vivaldi shaped partially dielectric loaded (VS-PDL) TEM horn antenna is proposed as a compact UWB antenna for systems using the newly established UWB band and also for the communication systems of popular bands like ISM, Wi-Fi, and GSM.

scholarly journals Compact Enhanced CPW-Fed Antenna for UWB Applications

2021 ◽  
Vol 10 (1) ◽  
pp. 15-20
Author(s):  
H. Abdi ◽  
J. Nourinia ◽  
C. Ghobadi
Keyword(s):  
Low Cost ◽  
Impedance Matching ◽  
Ground Plane ◽  
Ultra Wideband ◽  
Compact Antenna ◽  
Low Profile ◽  
Rectangular Slit ◽  
Operating Bandwidth ◽  
Uwb Applications ◽  
Operational Range

This paper presents a compact antenna with co-planar waveguide (CPW) feed line for ultra-wideband (UWB) applications. The proposed antenna consists of a beveled radiating patch with wide rectangular slit at its upper side and a partial ground plane with insertion of symmetrically two-step beveled tapers at its center and sides, which provides a wide operating bandwidth. The antenna is integrated with narrow rectangular-shaped parasitic elements with different lengths placed adjacent to radiant patch to significantly enhance the impedance matching and bandwidth, especially at the upper frequencies. The measured results show an |S11| less than -10 dB bandwidth of 2.5-19.8 GHz with 155% fractional bandwidth. Simulation results are in good agreement with experimental measurements, which exhibits the validity of the proposed design approach. Moreover, the proposed CPW-fed antenna shows omnidirectional radiation patterns with stable gain within the operational range. The proposed compact antenna with low profile, light weight, large frequency bandwidth, ease of fabrication and low cost material is suitable for UWB applications.

scholarly journals A CPW-fed Irregular Shaped Hexagonal Patch Antenna with Elliptical Substrate for UWB Applications

2019 ◽  
Vol 9 (2) ◽  
pp. 373-376
Keyword(s):  
Patch Antenna ◽  
Impedance Matching ◽  
Ultra Wideband ◽  
Total Efficiency ◽  
Uwb Antenna ◽  
Radiation Characteristics ◽  
Wide Range ◽  
Uwb Applications ◽  
Novel Design ◽  
Peak Gain

A novel design of Ultra-Wideband (UWB) antenna with irregularly shaped hexagonal patch built on the elliptical-shaped FR-4 laminate with εr = 4.3 and tanδ = 0.025 is presented. The feed mechanism utilized in the structure proposed is modified co-planar waveguide (CPW), the feeding microstrip is tapered near the connecting edge of the patch for better impedance matching. The proposed antenna is compared with the traditional rectangular substrate and found that the elliptical substrate enhances the radiation characteristics of the antenna and is capable of functioning effectively in the range of 3.1 GHz-11.7 GHz, accompanied by the total efficiency > 86% across the whole FCC allocated UWB operating band. The antenna can be used for wide range of UWB applications as it exhibits good omnidirectional characteristics with a realized peak gain of 4.178dB and an average realized gain of 3.063dB. The simulation work of the antenna is accomplished using CST Studio (v. 2014).

A Miniaturized High-Gain (MHG) Ultra-Wideband Unidirectional Monopole Antenna for UWB Applications

2019 ◽  
Vol 28 (13) ◽  
pp. 1950230 ◽  
Author(s):  
J. Vijayalakshmi ◽  
G. Murugesan
Keyword(s):  
Patch Antenna ◽  
Ground Plane ◽  
High Gain ◽  
Substrate Material ◽  
Monopole Antenna ◽  
Ultra Wideband ◽  
Defected Ground Structure ◽  
Compact Antenna ◽  
Overlay Design ◽  
Uwb Applications

A miniaturized high-gain (MHG) ultra-wideband (UWB) unidirectional monopole antenna with defected ground structure (DGS) is designed for ultra-wideband applications. The MHG antenna is printed on the FR4 substrate material with an overall size of 26.6-mm [Formula: see text] 29.3-mm [Formula: see text] 1.6-mm, which operates over the UWB frequency range and achieves the bandwidth between 3.1[Formula: see text]GHz and 10.6[Formula: see text]GHz. This high-gain unidirectional antenna exhibits a peak gain of 7.20[Formula: see text]dB with an efficiency of 95%. The compact antenna is a simple overlay design of circular and rectangular patches with the partial ground plane exhibiting high gain and better directivity. The overlay patch antenna acts as the radiator for wider bandwidth compared to the fundamental design of patch antenna and is matched to an SMA connector via 50[Formula: see text][Formula: see text] microstrip feed line. These simulated results are presented using HFSS software package. The designed antennas are fabricated and validated by using Agilent Vector Analyzer.

scholarly journals A Triple-band Suspended Microstrip Antenna with Symmetrical USlots for WLAN/WiMax Applications

2018 ◽  
Vol 7 (2) ◽  
pp. 41-47 ◽  
Author(s):  
S. B. Behera ◽  
D. Barad ◽  
S. Behera
Keyword(s):  
Microstrip Antenna ◽  
Communication Systems ◽  
Ground Plane ◽  
Dielectric Substrate ◽  
Wireless Communication Systems ◽  
Impedance Bandwidth ◽  
Compact Antenna ◽  
Impedance Characteristics ◽  
Triple Band ◽  
Feeding Techniques

In this study, a triple-band suspended microstrip antenna with symmetrical U-slots is proposed for modern wireless communication systems. The antenna is specifically designed to acquire application in WLAN and WiMAX communication. Symmetrical U-slots in the radiator patch increase the number of resonances and improve the gain response. An appropriate air height was maintained between the ground plane and the radiator patch layer for improving bandwidth operation. The impedance characteristics of the antenna are enhanced using probe feeding techniques. The proposed compact antenna is designed on a single dielectric substrate of (30×25×1.56) mm3 . Parametric analysis of the proposed structure has been realized using IE3D software. This prototype exhibits maximum impedance bandwidth of 750 MHz and gain response of 7.28 dBi. The performance of the structure at three resonating bands i.e., at 3.3 GHz, 3.78 GHz and 5.3 GHz facilitate it to be applicable for WLAN/WiMAX systems.

scholarly journals Highly Compact Design of Trimmed Patch with Modified Partial Ground Structure for Extreme-Wideband Systems

2017 ◽  
Vol 7 (5) ◽  
pp. 1918-1921
Author(s):  
H. Alsaif
Keyword(s):  
Impedance Matching ◽  
Ground Plane ◽  
Substrate Material ◽  
Ultra Wideband ◽  
Operating Frequency ◽  
Radiation Characteristics ◽  
Total Size ◽  
Compact Design ◽  
Uwb Applications ◽  
Wide Operating

In this paper, a novel highly compact microstrip monopole antenna with adjusted ground plane for ultra-wideband (UWB) applications is proposed. The patch antenna is composed of a trimmed radiator and rectangular ground plane with four slots providing relatively extreme wide operating frequency from 2.8 till 16.2 GHz based on -10 dB criteria. The high matching impedance in the design results in ultra-wide bandwidth that covers the entire BW allocated by FCC for UWB applications. At the same time, the presented antenna is distinguished by significantly miniaturized structure with total size of 13 mm x 10 mm printed on a substrate material of Rogers Duriod RT 5880 LZ with relative permittivity of εr=1.9 and loss tangent δ of 0.0009. The suggested antenna is appropriate for miniature wireless gadgets. The patch has been investigated, and optimized in terms of operating frequency, impedance matching, radiation characteristics, structure size, and fabrication cost.

scholarly journals Irregular Hexagonal shaped antenna for UWB Applications

2019 ◽  
Vol 8 (2) ◽  
pp. 1193-1195 ◽  
Keyword(s):  
Reflection Coefficient ◽  
Radiation Pattern ◽  
Microstrip Line ◽  
Ground Plane ◽  
Wide Band ◽  
Ultra Wide Band ◽  
Feed Line ◽  
Notch Band ◽  
Uwb Applications ◽  
Peak Gain

This paper presents the design of a microstrip line fed irregular hexagonal shaped monopole antenna. The antenna consists of a sliced semi-circular ground plane with a square slit below the feed line which exhibits an Ultra Wide Band (UWB) of 7.5GHz. A frequency notch band (5.1GHz – 5.57GHz) is obtained by introducing ‘U’ shaped slot on to the proposed antenna. The proposed monopole is fabricated, measured for reflection coefficient, radiation pattern and peak gain to validate the performance of the antenna.

A Compact Printed UWB MIMO Antenna with Electronically Reconfigurable WLAN Band-Notched Characteristics

2021 ◽  
pp. 2250045
Author(s):  
Hicham Medkour ◽  
Soufian lakrit ◽  
Sudipta Das ◽  
B. T. P. Madhav ◽  
K. VasuBabu
Keyword(s):  
Ground Plane ◽  
Antenna System ◽  
Ultra Wideband ◽  
Performance Parameters ◽  
Pin Diodes ◽  
Mimo Antenna ◽  
Notch Band ◽  
Notched Band ◽  
Negative Effect ◽  
Uwb Applications

In this research paper, a simple design of an ultra-wideband (UWB) multi-input multi-output (MIMO) antenna with low envelope correlation coefficient (ECC), high isolation, enhanced gain, radiation efficiency and reconfigurable band notching functionality is proposed. Two symmetrical slots are carefully integrated into the partial ground plane of the conventional monopole to provide a notched band at 5.8[Formula: see text]GHz for the WLAN system. This notching method is simple and does not endure negative effect performance or any design complexity. The notched band is then controlled using PIN diodes. A complete biasing circuit is integrated on the same partial ground plane to bias the PIN diodes in forward and reverse directions. To reduce the complexity of the design that may be increased due to the reconfiguration circuit, isolation enhancement is accomplished by orthogonal placement of the elements rather than using any additional decoupling structures. A prototype of the MIMO UWB structure is fabricated and its performance parameters are experimentally tested. The captivating agreement between simulation and measurement demonstrates that the proposed antenna system is a good candidate for UWB applications with an operating band extending from 3 to 11[Formula: see text]GHz, notch-band reconfiguration freedom, and isolation of more than 20[Formula: see text]dB.

scholarly journals A Compact Planar UWB Antenna with Triple Controllable Band-Notched Characteristics

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Chaabane Abdelhalim ◽  
Djahli Farid
Keyword(s):  
Group Delay ◽  
Ground Plane ◽  
Frequency Range ◽  
Uwb Antenna ◽  
Radiating Element ◽  
Uwb Applications ◽  
Vertical Up ◽  
Peak Gain ◽  
Triple Band ◽  
Compact Planar

A modified compact planar ultrawideband (UWB) monopole antenna with triple controllable band-notched characteristics is presented in this paper. The proposed antenna consists of a modified stair cased V-shaped radiating element and partial ground plane. The triple band-notched characteristics are achieved by embedding two different vertical up C-shaped slots with a vertical down C-shaped slot in the radiating patch and in the ground plane, respectively. Besides, the bandwidth of each rejected band can be independently controlled by adjusting the dimensions of the corresponding band notched structure. The proposed antenna with rejected bands characteristics is successfully simulated, prototyped, and measured. The measured results show that the antenna operates until upper 11 GHz for voltage standing wave ratio (VSWR) is less than 2, and exhibits bands rejection of 1.6–2.66 GHz (49.76%), 3-4 GHz (28.57%), and 5.13–6.03 GHz (16.12%). Moreover, the proposed antenna shows a near omnidirectional radiation patterns, stable peak gain, and with small group delay and transfer function variation on the whole UWB frequency range except in the notched frequency bands, which makes it suitable for being used in the future UWB applications.

scholarly journals A Simple Monopole Antenna with a Switchable Beam for 5G Millimeter-Wave Communication Systems

Electronics ◽  
2021 ◽  
Vol 10 (22) ◽  
pp. 2870
Author(s):  
Hijab Zahra ◽  
Musa Hussain ◽  
Syeda Iffat Naqvi ◽  
Syed Muzahir Abbas ◽  
Subhas Mukhopadhyay
Keyword(s):  
Millimeter Wave ◽  
Communication Systems ◽  
Return Loss ◽  
Low Cost ◽  
Ground Plane ◽  
Pin Diodes ◽  
Design Evolution ◽  
Compact Antenna ◽  
Beam Switching ◽  
Millimeter Wave Communication

A simple and compact antenna with a switchable beam for millimeter-wave communication is proposed in this paper. The antenna has a planar structure, and the design evolution is discussed. The beam switching functionality was achieved by incorporating two PIN diodes in the ground plane of the antenna. By switching ON either of the PIN diodes, the inverted L-shaped stub becomes connected to the ground plane and behaves as a cavity, which causes the dispersion of the radiation pattern. Therefore, a wide-angle (±18∘) beam-switching property can be achieved using a simple and low-cost technique, without the necessity to implement additional conventional circuits. The proposed antenna is characterized by a good performance in terms of return loss, bandwidth, measured gain up to 7.95 dB, and radiation efficiency up to 84%, making it a proper candidate for IoT technology and millimeter-wave 5G devices.

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