Substrate-perforated and compact ultra-wideband antenna with WLAN band rejection

2014 ◽  
Vol 7 (5) ◽  
pp. 543-550
Author(s):  
Wessam Zayd Shareef ◽  
Alyani Ismail ◽  
Adam R.H. Alhawari
Keyword(s):  
Simple Technique ◽  
Coplanar Waveguide ◽  
Ground Plane ◽  
Directional Pattern ◽  
Ultra Wideband ◽  
Printed Antenna ◽  
High Radiation ◽  
Wideband Antenna ◽  
Measurement Result ◽  
Notched Band

This paper presents a designed notched band ultra-wideband (UWB) printed antenna using coplanar waveguide-fed configuration. Simple technique of perforating the substrate and modifying the ground plane and radiator patch was used to achieve UWB for the designed antenna at smaller structure. Narrow arch-shaped slot was introduced to the patch of the proposed antenna to obtain the band rejection function around the 5.4 GHz frequency to avoid the interference with WLAN applications. The proposed antenna was fabricated and the measurement result is found in well agreement with the simulation result. In addition to the acquirable UWB bandwidth, the designed antenna is capable to exhibit high radiation efficiency and omni-directional pattern.

A dual notched band UWB-BPF based on microstrip-to-short circuited CPW transition

2018 ◽  
Vol 10 (7) ◽  
pp. 794-800 ◽  
Author(s):  
Abu Nasar Ghazali ◽  
Mohd Sazid ◽  
Srikanta Pal
Keyword(s):  
Coplanar Waveguide ◽  
Ground Plane ◽  
Simulated Data ◽  
Ultra Wideband ◽  
Ring Resonators ◽  
Optimized Design ◽  
Defected Ground Structure ◽  
Split Ring ◽  
Notched Band ◽  
Resonant Modes

AbstractThis paper proposes a dual notched band ultra-wideband (UWB) bandpass filter (BPF) based on hybrid transition of microstrip and coplanar waveguide (CPW). The CPW in ground plane houses a stepped impedance resonator shorted at ends, and is designed to place its resonant modes within the UWB passband. The microstrips on the top plane are placed some distance apart in a back-to-back manner. The transition of microstrip on top and shorted CPW in the ground is coupled through the dielectric in a broadside manner. The optimized design of the transition develops the basic UWB spectrum with good return/insertion loss and extended stopband. Later, defected ground structure, embedded in CPW, and split ring resonators, coupled to feeding lines are utilized to develop dual sharp passband notches. The simulated data are verified against the experimentally developed prototype. The proposed dual notched UWB-BPF structure measures only 14.6 × 7.3 mm2, thereby justifying its compactness.

scholarly journals Inverted Diamond-shaped Notched Substrate and Patch for High-frequency Interference on Ultra-wideband Antenna

2017 ◽  
Vol 7 (6) ◽  
pp. 2929
Author(s):  
Raed Abdulkareem Abdulhasan ◽  
Khairun Nidzam Ramli ◽  
Rozlan Alias ◽  
Lukman Audah ◽  
Abdul Rashid Omar Mumin
Keyword(s):  
Electromagnetic Interference ◽  
High Frequency ◽  
Coplanar Waveguide ◽  
Impedance Matching ◽  
Ultra Wideband ◽  
Wideband Antenna ◽  
Notched Band ◽  
Measurement Results ◽  
Simulation Results ◽  
Special Process

<span>Notches loaded on a patch antenna can affect significantly on </span><em><span lang="AR-SA">‎</span></em><span>the antenna impedance matching. Therefore, notching technique is an efficient way to reduce </span><em><span lang="AR-SA">‎</span></em><span>the electromagnetic interference with unwanted bands. In this paper, a </span><em><span lang="AR-SA">‎</span></em><span>novel inverted diamond</span><em><span lang="AR-SA" dir="RTL">‏-‏</span></em><span>shaped closed-end slot on a substrate and </span><em><span lang="AR-SA">‎</span></em><span>vertex-fed printed hexagonal patch ultra</span><em><span lang="AR-SA" dir="RTL">‏-‏</span></em><span>wideband antenna is proposed for high-frequency band rejection. This antenna is fed using </span><em><span lang="AR-SA">‎</span></em><span>coplanar waveguide, and it is </span><span lang="EN-GB">optimised</span><span> by veering several patch </span><em><span lang="AR-SA">‎</span></em><span>parameters which further improved the inter bandwidth at both the </span><em><span lang="AR-SA">‎</span></em><span>lower and upper bands. However, the centre-notched band is shifted </span><em><span lang="AR-SA">‎</span></em><span>from 6 GHz to 7.5 GHz by cutting the inverted diamond shape in a </span><em><span lang="AR-SA">‎</span></em><span>special process. The developed ultra-wideband antenna is verified by </span><em><span lang="AR-SA">‎</span></em><span>comparing the simulation results with the measurement results. The </span><em><span lang="AR-SA">‎</span></em><span>measured results with a fractional bandwidth of 133% have a good </span><em><span lang="AR-SA">‎</span></em><span>agreement with the simulation results 146%. Moreover, the measured radiation showed omnidirectional patterns</span><em><span lang="AR-SA">‎</span></em><span lang="EN-GB">.</span>

scholarly journals Coplanar waveguide-fed ultra-wideband antenna with WLAN band

2021 ◽  
Vol 21 (3) ◽  
pp. 1523
Author(s):  
Chaiyong Soemphol ◽  
Niwat Angkawisittpan
Keyword(s):  
Low Cost ◽  
Coplanar Waveguide ◽  
Ground Plane ◽  
Transmission Band ◽  
Dipole Antenna ◽  
Ultra Wideband ◽  
Uwb Antenna ◽  
Wideband Antenna ◽  
Directional Radiation ◽  
Good Agreement

<span>A coplanar waveguide</span><em></em><span>fed ultra-wideband antenna with extended transmission band to WLAN frequency is investigated. The proposed antenna consists of a modified </span><span>semi-</span><span>circular patch and staircase of ground plane. The prototype is fabricated on a low cost FR4 substrate with dielectric constant of 4.4</span><span> with thicknes of 0.8 mm. The overall dimensions of proposed UWB antenna are </span><span>34 mm x 40 mm. The simulation and experimental results have been shown that the proposed antenna archives low VSWR over transmission bandwidth from 2.10 - 12.7 GHz to cover both WLAN and UWB bands.  The average gain is 3.87 dBi. It depicts nearly omni-directional radiation pattern like dipole antenna. Moreover, the fabricated prototype antenna shows a good agreement between the simulated and measured results</span>

Design and Analysis of Ultra-Wideband Antenna with Triple Band-Notched Characteristic

2013 ◽  
Vol 846-847 ◽  
pp. 521-525
Author(s):  
Zheng Lin Zhou ◽  
Ming Li
Keyword(s):  
Coplanar Waveguide ◽  
Ground Plane ◽  
Local Area Networks ◽  
Local Area ◽  
Wireless Local Area Networks ◽  
Ultra Wideband ◽  
Uwb Antenna ◽  
Wideband Antenna ◽  
X Band ◽  
Triple Band

A compact coplanar waveguide fed UWB (ultra-wideband) antenna with triple band-notched characteristics is presented. The rectangle radiation patch is used in the new design, and the bandwidth of the UWB antenna is extended by using circle corner for the rectangle cut from the ground. A parasitic element is added, whereas an inverted U-shaped slot is cut on the top of the CPW ground plane and a U-shaped slot is cut on the rectangle radiation patch. As a result, a triple band-notched characteristic is obtained, by which the potential interference between UWB and WLAN (Wireless Local Area Networks), C-band and X-band systems can be effectively reduced.

Kuznets curve with parabola-shaped ultra-wideband antenna with defected ground plane for communications

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Lalitha Bhavani Konkyana ◽  
Sudhakar Alapati
Keyword(s):  
Ground Plane ◽  
Substrate Material ◽  
Ultra Wideband ◽  
Kuznets Curve ◽  
Content Type ◽  
Wideband Antenna ◽  
Notched Band ◽  
X Band ◽  
Resin Binder ◽  
Defected Ground Plane

Purpose This paper aims to state the configuration of the proposed antenna which is competent to many networks such as LTE and X band applications. The experimental study encountered the significance of the proposed antenna. Design/methodology/approach A novel compact Kuznets curve with parabola-shaped quad-band notched antenna is demonstrated in this paper. The presented prototype is ascertained on a composite material composed of woven fiberglass cloth with an epoxy resin binder. The resulting ultra-wideband antenna ranges 3.1–3.54 GHz, 5.17–5.51 GHz, 5.74–6.43 GHz and 6.79–7.60 GHz. To avoid the frequency bands which cause UWB interference,the projected antenna has been incorporated with slotted patch. The proposed antenna design is attained in four steps. The simple circular patch antenna model with defected ground plane is subjected to stepwise progression by including parabola-shaped slot and U shaped slot on the patch to attain four notched bands. Findings This projected antenna possesses an optimal bond among simulated and measured outcomes,which is more suitable for the quad notched band applications. Substrate analysis is done by varying substrate material, and notch behavior is presented. The proposed method’s optimum performance in metrics such as return loss, voltage standing wave ratio and radiation pattern varies its frequency range from 2.56 to 7.6 GHz. Originality/value The antenna adaptation of the defected ground plane has achieved through the quad notched band with operating frequency ranges 2.56 to 7.6 GHz and with eliminated frequency ranges 3.55–5.16 GHz, 5.52–5.73 GHz, 6.44–6.78 GHz and 7.66–10.6 GHz.

Cuboidal quad-port UWB-MIMO antenna with WLAN rejection using spiral EBG structures

2021 ◽  
pp. 1-8
Author(s):  
Sumon Modak ◽  
Taimoor Khan
Keyword(s):  
Close Agreement ◽  
Ground Plane ◽  
Antenna System ◽  
Ultra Wideband ◽  
Electromagnetic Bandgap ◽  
Mimo Antenna ◽  
Simulated Performance ◽  
Notched Band ◽  
Multiple Input ◽  
Band Characteristic

Abstract This study presents a novel configuration of a cuboidal quad-port ultra-wideband multiple-input and multiple-output antenna with WLAN rejection characteristics. The designed antenna consists of four F-shaped elements backed by a partial ground plane. A 50 Ω microstrip line is used to feed the proposed structure. The geometry of the suggested antenna exhibits an overall size of 23 × 23 × 19 mm3, and the antenna produces an operational bandwidth of 7.6 GHz (3.1–10.7 GHz). The notched band characteristic at 5.4 GHz is accomplished by loading a pair of spiral electromagnetic bandgap structures over the ground plane. Besides this, other diversity features such as envelope correlation coefficient, and diversity gain are also evaluated. Furthermore, the proposed antenna system provides an isolation of −15 dB without using any decoupling structure. Therefore, to validate the reported design, a prototype is fabricated and characterized. The overall simulated performance is observed in very close agreement with it's measured counterpart.

scholarly journals Realizing UWB Antenna Array with Dual and Wide Rejection Bands Using Metamaterial and Electromagnetic Bandgaps Techniques

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 269
Author(s):  
Ayman A. Althuwayb ◽  
Mohammad Alibakhshikenari ◽  
Bal S. Virdee ◽  
Pancham Shukla ◽  
Ernesto Limiti
Keyword(s):  
Antenna Array ◽  
Ground Plane ◽  
Ultra Wideband ◽  
Dual Band ◽  
Area Network ◽  
Electromagnetic Bandgap ◽  
Uwb Antenna ◽  
Average Gain ◽  
Left Handed ◽  
Notched Band

This research article describes a technique for realizing wideband dual notched functionality in an ultra-wideband (UWB) antenna array based on metamaterial and electromagnetic bandgap (EBG) techniques. For comparison purposes, a reference antenna array was initially designed comprising hexagonal patches that are interconnected to each other. The array was fabricated on standard FR-4 substrate with thickness of 0.8 mm. The reference antenna exhibited an average gain of 1.5 dBi across 5.25–10.1 GHz. To improve the array’s impedance bandwidth for application in UWB systems metamaterial (MTM) characteristics were applied it. This involved embedding hexagonal slots in patch and shorting the patch to the ground-plane with metallic via. This essentially transformed the antenna to a composite right/left-handed structure that behaved like series left-handed capacitance and shunt left-handed inductance. The proposed MTM antenna array now operated over a much wider frequency range (2–12 GHz) with average gain of 5 dBi. Notched band functionality was incorporated in the proposed array to eliminate unwanted interference signals from other wireless communications systems that coexist inside the UWB spectrum. This was achieved by introducing electromagnetic bandgap in the array by etching circular slots on the ground-plane that are aligned underneath each patch and interconnecting microstrip-line in the array. The proposed techniques had no effect on the dimensions of the antenna array (20 mm × 20 mm × 0.87 mm). The results presented confirm dual-band rejection at the wireless local area network (WLAN) band (5.15–5.825 GHz) and X-band satellite downlink communication band (7.10–7.76 GHz). Compared to other dual notched band designs previously published the footprint of the proposed technique is smaller and its rejection notches completely cover the bandwidth of interfering signals.

scholarly journals Design of a Compact CPW-Fed Monopole Antenna With Asymmetrical Hexagonal Slot Loaded Ground Structure for C/X/Ku Band Applications

2020 ◽  
Vol 16 (1) ◽  
pp. 15-22
Author(s):  
Ajay Kumar Dwivedi ◽  
Brijesh Mishra ◽  
Vivek Singh ◽  
Pramod Narayan Tripathi ◽  
Ashutosh Kumar Singh
Keyword(s):  
High Frequency ◽  
Ground Plane ◽  
Directional Pattern ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Ground Structure ◽  
High Frequency Structure Simulator ◽  
Performance Matrix ◽  
Novel Design ◽  
Ku Band

AbstractA novel design of ultra-wideband CPW-fed compact monopole patch antenna is presented in the article. The size of the antenna is 22 × 18 × 1.6 mm and it operates well over an ultra-wideband frequency range 4.86–13.66 GHz (simulated) and 4.93–13.54 GHz (measured) covering C, X and partial Ku band applications. The proposed design consists of a defected ground plane and U-shape radiating patch along with two square shape parasitic patches in order to achieve the ultra-wideband (UWB) operations. The performance matrix is validated through measured results that indicate the wide impedance bandwidth (93.2 %) with maximum gain of 4 dBi with nearly 95 % of maximum radiation efficiency; moreover, the 3D gain pattern manifests approximately omni-directional pattern of the proposed design. The prototype has been modelled using HFSS (High Frequency Structure Simulator-18) by ANSYS, fabricated and tested using vector network analyser E5071C.

scholarly journals Design of a CPW-Fed Band-Notched UWB Antenna Using a Feeder-Embedded Slotline Resonator

2008 ◽  
Vol 2008 ◽  
pp. 1-5 ◽  
Author(s):  
Amin M. Abbosh
Keyword(s):  
Design Method ◽  
Coplanar Waveguide ◽  
The Other ◽  
Ultra Wideband ◽  
Uwb Antenna ◽  
Wideband Antenna ◽  
Compact Size ◽  
Two Samples ◽  
Bandstop Filter

A complete design method for a compact uniplanar ultra-wideband antenna with subband rejection capability is presented. A slotline resonator is incorporated in the coplanar waveguide feeder of the antenna to act as a bandstop filter, hence enabling the rejection of any undesired band within the passband of the antenna. Two samples of the proposed antenna were designed and manufactured. One of the developed antennas does not contain a resonator, whereas the other contains a slotline resonator. The designed antennas feature a compact size of 27 mm×27 mm. Results of the simulation and measurement show that the designed antennas have a bandwidth from 3 GHz to more than 11 GHz. The results also reveal that the use of the resonator in the feeder of the antenna efficiently rejects any undesired subband, such as the 4.9–5.9 GHz band assigned for IEEE802.11a and HIPERLAN/2. The gain of the antennas with the resonator is about 2.2 dBi at the passband, while it is less than −8 dBi at the rejected subband.

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