scholarly journals Design of SWB Antenna with Triple Band Notch Characteristics for Multipurpose Wireless Applications

2021 ◽  
Vol 11 (2) ◽  
pp. 711
Author(s):  
Warsha Balani ◽  
Mrinal Sarvagya ◽  
Tanweer Ali ◽  
Ajit Samasgikar ◽  
Saumya Das ◽  
...  
Keyword(s):  
Group Delay ◽  
Wide Band ◽  
Impedance Bandwidth ◽  
Pass Band ◽  
Wireless Applications ◽  
Notch Band ◽  
Pulse Transmission ◽  
X Band ◽  
Wide Range ◽  
Domain Performance

A compact concentric structured monopole antenna for super wide band (SWB) applications with triple notch band characteristics is designed and experimentally validated. The antenna covers an immense impedance bandwidth (1.6–47.5 GHz) with sharp triple notch bands at 1.8–2.2 GHz, 4–7.2 GHz, and 9.8–10.4 GHz to eliminate interference from co-existing advanced wireless services (AWS), C bands, and X bands, respectively. By loading an E-shaped stub connected at the top of the patch and by etching a split elliptical slot at the lower end of the radiating patch, the band rejection characteristics from 1.8–2.2 GHz for the AWS and 4–7.2 GHz for the C band are achieved, respectively. Further, by making use of a C-shaped resonator near the feed line, band rejection from 9.8–10.4 GHz for the X band is obtained. By varying the parameters of the antenna, the notch bands are controlled independently over a wide range of frequencies. The antenna provides good radiation characteristics, constant group delay response, and better gain over the pass band. The experimental results indicate that the designed antenna offers a remarkable reduction in gain and high variation in group delay over the stop bands. To characterize the wideband property and linear phase response of the designed antenna, its time-domain performance is extensively described and evaluated, which assure pulse transmission with minimum distortion.

Multi-Edged Wide-Band Rectangular Microstrip Fractal Antenna Array for C- and X-Band Wireless Applications

2016 ◽  
Vol 26 (04) ◽  
pp. 1750068 ◽  
Author(s):  
Jaspal Singh Khinda ◽  
Malay Ranjan Tripathy ◽  
Deepak Gambhir
Keyword(s):  
Return Loss ◽  
Low Cost ◽  
Ground Plane ◽  
Wide Band ◽  
Impedance Bandwidth ◽  
Network Analyzer ◽  
Fractal Antenna ◽  
Wireless Applications ◽  
X Band ◽  
Wide Range

A low-cost multi-edged rectangular microstrip fractal antenna (RMFA) yielding a huge bandwidth of 8.62[Formula: see text]GHz has been proposed in this paper. The proposed fractal antenna design constitutes a radiation patch, fed with 50[Formula: see text][Formula: see text] microstrip line and a partial ground plane. The partial ground plane is the combination of shapes of rectangle and three-point arc. The proposed antenna is simulated as well as fabricated. The simulated results using electromagnetic solver software and measured with vector network analyzer bench MS46322A are presented and compared. The various parameters such as return loss, voltage standing wave ratio (VSWR), antenna impedance, gain, directivity, group delay and phase of [Formula: see text], radiation efficiency and patterns are presented here. The depth of return loss is improved for a wide range of frequencies. The proposed fractal antenna is further extended to linear array to improve the gain and impedance bandwidth. The simulated and measured results prove the superiority of the proposed antenna.

scholarly journals Band notched self complementaryultra wideband antenna for wireless applications

2018 ◽  
Vol 7 (2.8) ◽  
pp. 529 ◽  
Author(s):  
Ch Ramakrishna ◽  
G A.E.Satish Kumar ◽  
P Chandra Sekhar Reddy
Keyword(s):  
High Frequency ◽  
Return Loss ◽  
Wide Band ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Relative Dielectric Permittivity ◽  
Frequency Range ◽  
Ground Structure ◽  
Wireless Applications ◽  
Patch Edge

This paper presents a band notched WLAN self complementaryultra wide band antenna for wireless applications. The proposed antenna encounters a return loss (RL) less than -10dB for entire ultra wideband frequency range except band notched frequency. This paper proposes a hexagon shape patch, edge feeding, self complementary technique and defective ground structure. The antenna has an overall dimensionof 28.3mm × 40mm × 2mm, builton  substrate FR4 with a relative dielectric permittivity 4.4. And framework is simulated finite element method with help of high frequency structured simulator HFSSv17.2.the proposed antenna achieves a impedance bandwidth of 8.6GHz,  band rejected WLAN frequency range 5.6-6.5 GHz with  vswr is less than 2.

scholarly journals Dual Band Gap Coupled Antenna Design with DGS for Wireless Communications

2014 ◽  
Vol 2 (3) ◽  
pp. 51 ◽  
Author(s):  
A. Kandwal ◽  
R. Sharma ◽  
S. K. Khah
Keyword(s):  
Side Lobe ◽  
Dual Band ◽  
Impedance Bandwidth ◽  
Side Lobe Level ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Wireless Applications ◽  
X Band ◽  
Ring Antenna ◽  
Good Agreement

A novel gap coupled dual band multiple ring antenna with a defected ground structure (DGS) has been successfully implemented. A different technique is used in this communication where both gap coupling and defected ground are applied to obtain better results for wireless applications. The designed antenna operates in two different frequency bands. The antenna shows a wideband in C-band and also resonates in the X-band. The main parameters like return loss, impedance bandwidth, radiation pattern and gain are presented and discussed. The gain is increased and the side lobe level is considerably reduced to a good extent. Designed antenna is tested and the results show that the simulation and experimental results are in good agreement with each other.

scholarly journals A CPW - Fed Octagonal Ring Shaped Wide Band Antenna for Wireless Applications

2018 ◽  
Vol 7 (3) ◽  
pp. 87-92 ◽  
Author(s):  
P. Khanna ◽  
A. Sharma ◽  
A. K. Singh ◽  
A. Kumar
Keyword(s):  
Microstrip Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Wide Band ◽  
Impedance Bandwidth ◽  
Wireless Applications ◽  
High Frequency Structure Simulator ◽  
High Impedance ◽  
Ring Antenna ◽  
Operating Bandwidth

A CPW – Fed octagonal ring shaped antenna for wideband operation is presented. The radiating patch of proposed octagonal ring antenna consists of symmetrical slot in place of conventional annular ring microstrip antenna. The ground plane consists of two rectangular slots, while the radiator and the ground plane are on same plane that utilizes the space available around the radiator. The proposed antenna is simulated through Ansoft’s High Frequency Structure Simulator (HFSS). Measured result shows balanced agreement with the simulated results. The prototype is taken with dimensions 47 mm × 47 mm × 1.6 mm that achieves good return loss, constant group delay and good radiation patterns over the entire operating bandwidth of 2.0 to 9.5 GHz (7.5 GHz). The proposed antenna achieves high impedance bandwidth of 130%. Thus, the proposed antenna is applicable for S and C band applications.

scholarly journals A closed modified V-shaped uniplanar triple band ACS fed antenna for wireless applications

2020 ◽  
Vol 9 (4) ◽  
pp. 1497-1505
Author(s):  
Anuj Kumar ◽  
Anukul Jindal ◽  
Apurva Singh ◽  
Reshma Roy ◽  
Om Prakash Kumar ◽  
...  
Keyword(s):  
High Frequency ◽  
Impedance Matching ◽  
Simulation Software ◽  
Impedance Bandwidth ◽  
Wireless Applications ◽  
Feed Line ◽  
X Band ◽  
Rectangular Strips ◽  
Different Characteristics ◽  
Triple Band

In the proposed paper, a uniplanar asymmetric coplanar strip (ACS) fed antenna with closed V-shaped radiating patch of size  printed on FR4 substrate with loss tangent ( =0.02, height (h)=1.6mm, and dielectric constant of 4.4 covering WiMAX, X-band and WLAN applications is presented. The proposed closed V-shaped radiating patch is formed by joning two rectangular stubs. The resultant shape of the radiating patch is obtained by adding rectangular strips to feed line until desired multiband results are achieved.  The advantage of this structure is that it forms simple configuration as well as helps the overall antenna in attaining three distinict useful frequency band with good impedance matching for S11-10 dB criteria. The proposed ACS fed antenna operates at 3.1 (WiMAX), 5.0 (WLAN) and 9.9 (X-band) GHz with impedance bandwidth ranging from 2.7-3.9 GHz, 4.4-5.5 GHz and 9.5-10.3 GHz in simulation. Under measurement the proposed antenna shows multiband phenomenon at 3.2, 5.3 and 9.7 GHz with impedance bandwidth ranging from 2.8-3.7 GHz, 4.6-5.4 GHz and 9.4-10 GHz, respectively. The antenna exhibits simulated gain of 2.51, 1.18 and 1.96 dB at the corresponding frequency bands of 3.1, 5.0 and 9.9 GHz. The key parameters of the antenna like length and width of the multi-branched strips are optimized to get the multiband operation. The deisign simulation is carried out in Ansys HFSS (High frequency Simulation Software) where different characteristics of the proposed antenna are investigated. The evolution and optimization process is dealt in detail with the help of S11, VSWR, current distributions, radiation patterns and gain.

scholarly journals Ultra-Wide Band Microstrip Patch Antenna for C and X -Band Applications with Effect of Copper Thickness

2020 ◽  
Vol 9 (4) ◽  
pp. 77-82
Keyword(s):  
Patch Antenna ◽  
Satellite Communication ◽  
Group Delay ◽  
Wide Band ◽  
Microstrip Patch Antenna ◽  
Radiation Efficiency ◽  
Wet Etching ◽  
Microstrip Patch ◽  
X Band ◽  
Effect Of Copper

An ultrawide band partial ground miniaturized rectangular shape microstrip patch antenna is investigated in this paper. The size of the proposed antenna is 17×10×1.6 mm3 and is excited by microstrip line feed which operates for C band and Xband. In this article we have compared the variation in the output by changing the thickness of copper of the proposed antenna from 35μm and 70μm. The design is simulated by Ansoft’s HFSS13v which is based on finite element method then is fabricated using wet etching method and finally measured by copper mountain reflectometer R140 version. The performance of the rectangular shaped antenna is analyzed on various parameters like reflection coefficient, VSWR, group delay, gain, radiation pattern and radiation efficiency. The measured and simulated results reveal that proposed antenna resonates from 6.3-12GHz giving ultrawide band with bandwidth impedance of 62.9% with the gain of 3.94dBi and maximum radiation efficiency of 95% targeted for satellite communication, radars and radio navigation applications.

Design of a CPW-fed UWB printed antenna with dual notch band using mushroom structure

2015 ◽  
Vol 9 (2) ◽  
pp. 327-334 ◽  
Author(s):  
Tapan Mandal ◽  
Santanu Das
Keyword(s):  
Group Delay ◽  
Coplanar Waveguide ◽  
Surface Current ◽  
Ultra Wideband ◽  
Dual Band ◽  
Pass Band ◽  
Printed Antenna ◽  
Operating Band ◽  
Notch Band ◽  
Constant Group

A coplanar waveguide-fed planar hexagonal monopole ultra-wideband antenna with dual-band rejection characteristics is proposed in this paper. The desired notch frequencies at 3.5 and 5.5 GHz are realized by incorporating mushroom structures. The input impedance and surface current distributions are used for analysis and explanation of the effects of mushroom cells. The prototype and proposed antennas are fabricated and tested. From the measured results, the proposed antenna provides an operating band of 2.81–14.32 GHz for 2 ≤ voltage standing wave ratio (VSWR), while the dual-band stop function is in the frequency bands of 3.3–3.7 GHz and 5.10–5.88 GHz. Moreover, the antenna model also exhibits constant group delay and linear phase in the pass band. The proposed antenna has appreciable gain and efficiency over the whole operating band except the notch bands.

scholarly journals Compact edge and end coupled wide band filter with notch at 5GHz

2019 ◽  
Vol 87 ◽  
pp. 01020
Author(s):  
Raasi Chenna ◽  
Vijayadithya Doddi ◽  
Sumanth Gurram ◽  
Vinay Sharma ◽  
Upadhayay Madhur Deo
Keyword(s):  
Transmission Coefficient ◽  
Group Delay ◽  
Wide Band ◽  
Ultra Wide Band ◽  
Pass Band ◽  
Band Filter ◽  
Coupled Lines ◽  
Microwave Signals ◽  
Uniform Group

In this paper a compact Ultra Wide Band filter with notch at WLAN frequency is designed. The filter is a designed using coupled lines arranged in inter digital capacitor form. The filter is designed to allow microwave signals in the range of 2GHz to 7GHz with a notch at 5GHz. The measured results show the notch at 5GHz with transmission coefficient of -14dB. With uniform group delay in pass band and nonlinear group delay at notch frequency.

Palm tree structured wide band monopole antenna

2015 ◽  
Vol 8 (7) ◽  
pp. 1077-1084
Author(s):  
Sandeep K. Palaniswamy ◽  
Kanagasabai Malathi ◽  
Arun K. Shrivastav
Keyword(s):  
Group Delay ◽  
Wide Band ◽  
Monopole Antenna ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Palm Tree ◽  
Mathematical Relationship ◽  
Compact Size ◽  
Wireless Usb ◽  
The Time Domain

This paper presents design, fabrication, and testing of a palm tree structured monopole antenna for wideband applications. The proposed antenna has a wide impedance bandwidth (−10 dB bandwidth) from 4 to 10.4 GHz. Palm tree antenna of compact size 23 mm × 20 mm is designed and fabricated on an FR4 substrate of thickness 1.6 mm. To validate the design, a mathematical relationship between the parameters of the palm tree geometry and the lower cut-off frequency has been established. Parametric study has been carried out to obtain optimum wideband characteristics. The prototype is experimentally validated for the band 4–10.4 GHz within ultra-wideband operations. Transfer function, impulse response and Group delay has been plotted in order to address the time domain characteristics of the palm tree antenna with fidelity factor values. The possible applications cover 5.2–5.8 GHz WLAN, C-band operations, 5.5 GHz WiMAX, and Wireless USB.

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