Printed ultra-wideband elliptical antenna with a frequency-band notch function

2009 ◽  
Vol 51 (3) ◽  
pp. 860-864 ◽  
Author(s):  
Abdallah A. Alshehri ◽  
A. R. Sebak ◽  
T. A. Denidni
Keyword(s):  
Frequency Band ◽  
Ultra Wideband

scholarly journals Ultrawideband Low-Profile and Miniaturized Spoof Plasmonic Vivaldi Antenna for Base Station

2020 ◽  
Vol 10 (7) ◽  
pp. 2429 ◽  
Author(s):  
Li Hui Dai ◽  
Chong Tan ◽  
Yong Jin Zhou
Keyword(s):  
Radiation Pattern ◽  
Frequency Band ◽  
High Gain ◽  
Base Station ◽  
Ultra Wideband ◽  
Radiation Patterns ◽  
Low Profile ◽  
Simulation Results ◽  
Vivaldi Antenna ◽  
Good Agreement

Stable radiation pattern, high gain, and miniaturization are necessary for the ultra-wideband antennas in the 2G/3G/4G/5G base station applications. Here, an ultrawideband and miniaturized spoof plasmonic antipodal Vivaldi antenna (AVA) is proposed, which is composed of the AVA and the loaded periodic grooves. The designed operating frequency band is from 1.8 GHz to 6 GHz, and the average gain is 7.24 dBi. Furthermore, the measured results show that the radiation patterns of the plasmonic AVA are stable. The measured results are in good agreement with the simulation results.

Ultra-Wideband Slot Antenna With Frequency Band-Stop Operation

2013 ◽  
Vol 55 (9) ◽  
pp. 2020-2023 ◽  
Author(s):  
Mohammad Ojaroudi ◽  
Nasser Ojaroudi
Keyword(s):  
Frequency Band ◽  
Ultra Wideband ◽  
Slot Antenna

Novel wideband slot antenna having notch-band function for 2.4 GHz WLAN and UWB applications

2011 ◽  
Vol 3 (4) ◽  
pp. 451-458 ◽  
Author(s):  
Arumugam Chellamuthu Shagar ◽  
Shaik Davood Wahidabanu
Keyword(s):  
Frequency Band ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Ground Plane ◽  
Ultra Wideband ◽  
Slot Antenna ◽  
Area Network ◽  
Rectangular Slot ◽  
Notch Band ◽  
Uwb Applications

In this paper, the design, simulation, and fabrication of a novel printed rectangular slot antenna with a band-notched function suitable for 2.4 GHz wireless local area network (WLAN) and ultra-wideband (UWB) applications is presented and investigated. Two pairs of slits are introduced into the ground plane to realize band-notched function, by tuning the position, length, and width of which a suitable rejected frequency band can be obtained. To improve the impedance matching, a rectangular cut is also made in the ground plane so that the antenna can cover 2–12 GHz frequency range. According to the measured results, the proposed antenna has a large bandwidth totally satisfying the requirement of 2.4 GHz WLAN and UWB systems, while providing the required band-notch function from 5.1 to 5.9 GHz. The study of transfer function and time-domain characteristics also indicates the band-notched function of the antenna. The radiation patterns display nearly omni-directional performance and the antenna gain is stable except in the rejected frequency band (5.1–5.9 GHz). Moreover, group delays are within 1.5 ns except for the notch band. These features make it a promising candidate for UWB wireless applications. Details of this antenna are described, and the experimental results of the constructed prototype are given.

scholarly journals Dual Notched-Band Crescent Moon Dielectric Resonator Antenna

2021 ◽  
Vol 25 (1) ◽  
pp. 11-19
Author(s):  
Mohamed Debab ◽  
◽  
Amina Bendaoudi ◽  
Zoubir Mahdjoub ◽  
◽  
...  
Keyword(s):  
Frequency Band ◽  
Dielectric Resonator ◽  
Satellite Communication ◽  
Ground Plane ◽  
Ultra Wideband ◽  
Dual Band ◽  
Impedance Bandwidth ◽  
Dielectric Resonator Antenna ◽  
Printed Antenna ◽  
Antenna Structure

In this article, a dual-band notched ultra-wideband (UWB) dielectric resonator antenna is proposed. The antenna structure consists of Crescent Moon Dielectric Resonator (CMDR) fed by a stepped microstrip monopole printed antenna, partial ground plane, and an I-shaped stub. The Crescent Moon dielectric resonator is placed on the microstrip monopole printed antenna to achieve wide impedance bandwidth, and the I-shaped stub is utilized to improve impedance bandwidth for the WiMAX band. A comprehensive parametric study is carried out using HFSS software to achieve the optimum antenna performance and optimize the bandwidth of the proposed antenna. The entire band is useful with two filtered bands at 5.5 GHz and 6.8 GHz by the creation of notches. The band’s rejection, WLAN band (5.2–5.7 GHz), and the downlink frequency band of ITU 7 GHz-band for satellite communication (6.5–7.3 GHz) is realized by inserting G-shaped and C-shaped slots in the ground. The simulation results demonstrate that the proposed CMDR antenna achieves satisfactory UWB performance, with an impedance bandwidth of around 88.7%, covers the frequency band of 3.2 - 8.3 GHz, excluding a rejection band for the WLAN and ITU 7 GHz band. The CMDR is simulated using HFSS and CST high-frequency simulators.

scholarly journals ULTRA-WIDEBAND SCANNING ANTENNA ARRAY WIRE EMITTERS

Doklady BGUIR ◽  
2019 ◽  
pp. 5-12
Author(s):  
O. A. Yurtsev ◽  
A. A. Popov
Keyword(s):  
Antenna Array ◽  
Frequency Band ◽  
Antenna Arrays ◽  
Ultra Wideband ◽  
Linear Lattice ◽  
Matching Criterion ◽  
Single Emitter ◽  
Phase Scan ◽  
Overlap Coefficient ◽  
Scanning Antenna

The aim of the work is to determine the properties of the ultra-wideband scanning antenna array of wire emitters. A single element of the grid is a three-dimensional antenna Vivaldi. Numerical simulation of antenna arrays and single Vivaldi emitters was carried out by the method of integral equations in the thin-wire approximation using the original program and the MMANA program. The dimensions of all elements of a single emitter are determined by the criterion of matching and the shape of the radiation pattern for operation in the frequency range 2–18 GHz. The described variant of the antenna according to the matching criterion (SWR < 2) has a frequency overlap coefficient of 12. The narrowing of the frequency band of a single emitter in the composition of non-scanning and scanning gratings within the angle of 30 degrees is determined. The article deals with the range properties of antenna arrays depending on the parameters of the emitters and the possibility of phase scanning. It is shown that the greatest frequency band in agreement has a lattice with a minimum step of placement of emitters. In a flat antenna array, when scanning in the H-plane, the frequency band according to the matching criterion decreases by 2–3 times. It is shown that the linear lattice without scanning has a frequency overlap coefficient equal to 6 according to the criterion of matching emitters. This ratio decreases as the phase scan sector increases. In a flat lattice, the frequency overlap coefficient and the phase scan sector are smaller than in a linear lattice and decrease with the number of rows. The reduced antenna array has a number of design advantages and can be used in systems with ultra-wideband signals.

Modal Analysis of Triple Frequency Band Notch Ultra-Wideband Monopole Antenna

2019 ◽  
pp. 87-93
Author(s):  
Ameya A. Kadam ◽  
Amit A. Deshmukh ◽  
A. P. C. Venkata ◽  
Arati Ambekar ◽  
K. P. Ray
Keyword(s):  
Modal Analysis ◽  
Frequency Band ◽  
Monopole Antenna ◽  
Ultra Wideband ◽  
Triple Frequency

scholarly journals Design and Investigation of Differential-Fed Ultra-Wideband Patch Antenna with Polarization Diversity

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Yanfang Wang ◽  
Fuguo Zhu ◽  
Steven Gao
Keyword(s):  
Frequency Band ◽  
Patch Antenna ◽  
Bottom Layer ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Polarization Diversity ◽  
Uwb Antenna ◽  
Feeding Mechanism ◽  
Microstrip Lines ◽  
Dual Polarized

A novel single- or dual-polarized ultra-wideband (UWB) patch antenna fed by coupled feeding mechanism is proposed. The single-polarized antenna consists of a square ring patch and two Γ-shaped patches which are coupled to the radiating patch. The vertical portions of the Γ-shaped patches are connected to the microstrip lines which are printed on the bottom layer of the grounded FR4 substrate. To realize the differential feeding mechanism for enhancing the polarization purity, a tapered balun is employed to excite the antenna. Further to provide dual linear orthogonal polarizations, another pair of Γ-shaped patches is added in the single-polarized UWB antenna. The dual-polarized UWB antenna prototype can achieve two orthogonal polarizations with an impedance bandwidth (S11≤-10 dB) of 113% and isolation of over 25 dB across the entire frequency band.

scholarly journals Double Overt-Leaf Shaped CPW-Fed Four Port UWB MIMO Antenna

Electronics ◽  
2021 ◽  
Vol 10 (24) ◽  
pp. 3140
Author(s):  
Shobit Agarwal ◽  
Umair Rafique ◽  
Rizwan Ullah ◽  
Shakir Ullah ◽  
Salahuddin Khan ◽  
...  
Keyword(s):  
Frequency Band ◽  
Impedance Matching ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Antenna Element ◽  
Single Element ◽  
Mimo Antenna ◽  
Single Antenna ◽  
Isolation Performance ◽  
Diversity Technique

This paper presents a 4 × 4 multi-input multi-output antenna array for ultra-wideband applications. The single element of the array is comprised of a modified co-planar waveguide-fed double overt-leaf shaped patch radiator. The co-planar ground is optimized to achieve maximum impedance matching in the operating frequency band. The results show that the single antenna element offers an impedance bandwidth of 13.2 GHz starting from 3.2 GHz to 16.7 GHz. It is also observed from the results that the antenna offers good radiation characteristics and acceptable gain for the frequency band of interest. Furthermore, a 4 × 4 MIMO array is designed by utilizing the polarization diversity technique. To improve the isolation performance among antenna elements, a fan-shaped decoupler is introduced on the other side of the substrate, which ensures minimum isolation of 20 dB. Moreover, the proposed MIMO array operates in the frequency range of 2.75–16.05 GHz. The proposed MIMO array is fabricated and measured for the validation of simulation results, and it is observed that both the results are well in agreement.

Gain Enhancement for Whole Ultra-Wideband Frequencies of a Microstrip Patch Antenna

2020 ◽  
Vol 17 (2) ◽  
pp. 1469-1473
Author(s):  
Ahmed Jamal Abdullah Al-Gburi ◽  
I. M. Ibrahim ◽  
Z. Zakaria
Keyword(s):  
Frequency Band ◽  
Parametric Study ◽  
Patch Antenna ◽  
Satellite Communication ◽  
Microstrip Patch Antenna ◽  
Ultra Wideband ◽  
Antenna Gain ◽  
Gain Enhancement ◽  
Microstrip Patch ◽  
Rectangular Microstrip Patch Antenna

A rectangular microstrip patch antenna over ultra-wideband with superstrate are designed and analyzed. Four iterations A, B, C, D were designs. Iterations A and B represent the parametric study of the microstrip patch antenna. Iteration C represents Ultrawide band microstrip patch antenna with peak realized gain 4.196 dB at frequency 10.12 GHz, the gain was enhance using superstrate above the microstrip patch antenna as in iteration D, a novel enhancement happens for the whole ultra-wideband frequency band (3.1–10.6 GHz) with highest salient realised gain of 5.3 dB at frequency 10.55 GHz. The proposed antenna gain at iteration D is increased by 26.49%, which is useful for many applications such as satellite communication. Simulation and discussion results of the proposed antenna are present within this paper.

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