Low Profile and Wide bandwidth Characteristics of Top Loaded Monopole Antenna with Shorting Post

2006 ◽  
Author(s):  
T. Noro ◽  
Y. Kazama
Keyword(s):  
Monopole Antenna ◽  
Wide Bandwidth ◽  
Low Profile

scholarly journals A Low Profile Ultrawide Band Monopole Antenna for Wearable Applications

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Srinivas Doddipalli ◽  
Ashwin Kothari ◽  
Paritosh Peshwe
Keyword(s):  
Free Space ◽  
Specific Absorption Rate ◽  
Monopole Antenna ◽  
Human Tissues ◽  
Radiation Characteristics ◽  
Wide Bandwidth ◽  
Overall Design ◽  
Antenna Performance ◽  
Low Profile ◽  
The Impact

A low profile pentagonal shaped monopole antenna is designed and presented for wearable applications. The main objective of this paper is to design a miniaturized ultrawide band monopole planar antenna which can work efficiently in free space but also on the surface of the human body. The impact of human tissues on antenna performance is explained using the proposed pentagonal monopole antenna. The antenna is designed with a pentagonal radiator and a matched feed line of 50 ohm and square slots are integrated on defected ground of FR4 substrate with a size of 15 mm × 25 mm to achieve ultrawide band (UWB) performance in free space and human proximity. This overall design will enhance the antenna performance with wide bandwidth ranging from 2.9 GHz to 11 GHz. Specific absorption rate (SAR) of the proposed antenna on dispersive phantom model is also measured to observe the exposure of electromagnetic energy on human tissues. The simulated and measured results of the proposed antenna exhibit wide bandwidth and radiation characteristics in both free space and human proximity.

scholarly journals Compact Ultra-Wideband Monopole Antenna Loaded with Metamaterial

Sensors ◽  
2020 ◽  
Vol 20 (3) ◽  
pp. 796 ◽  
Author(s):  
Samir Salem Al-Bawri ◽  
Hui Hwang Goh ◽  
Md Shabiul Islam ◽  
Hin Yong Wong ◽  
Mohd Faizal Jamlos ◽  
...  
Keyword(s):  
Poor Performance ◽  
Split Ring Resonator ◽  
Monopole Antenna ◽  
Ultra Wideband ◽  
Negative Permittivity ◽  
Wide Bandwidth ◽  
Low Profile ◽  
Compact Size ◽  
Unit Cells ◽  
Uwb Applications

A printed compact monopole antenna based on a single negative (SNG) metamaterial is proposed for ultra-wideband (UWB) applications. A low-profile, key-shaped structure forms the radiating monopole and is loaded with metamaterial unit cells with negative permittivity and more than 1.5 GHz bandwidth of near-zero refractive index (NZRI) property. The antenna offers a wide bandwidth from 3.08 to 14.1 GHz and an average gain of 4.54 dBi, with a peak gain of 6.12 dBi; this is in contrast to the poor performance when metamaterial is not used. Moreover, the maximum obtained radiation efficiency is 97%. A reasonable agreement between simulation and experiments is realized, demonstrating that the proposed antenna can operate over a wide bandwidth with symmetric split-ring resonator (SSRR) metamaterial structures and compact size of 14.5 × 22 mm2 (0.148 λ0 × 0.226 λ0) with respect to the lowest operating frequency.

Low-profile U-shaped DRA for ultra-wideband applications

2016 ◽  
Vol 9 (3) ◽  
pp. 621-627 ◽  
Author(s):  
Idris Messaoudene ◽  
Tayeb A. Denidni ◽  
Abdelmadjid Benghalia
Keyword(s):  
Dielectric Resonator ◽  
Ground Plane ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Dielectric Resonator Antenna ◽  
Radiation Patterns ◽  
Wide Bandwidth ◽  
Operating Band ◽  
Low Profile ◽  
Measurement Results

In this paper, a microstrip-fed U-shaped dielectric resonator antenna (DRA) is simulated, designed, and fabricated. This antenna, in its simple configuration, operates from 5.45 to 10.8 GHz. To enhance its impedance bandwidth, the ground plane is first modified, which leads to an extended bandwidth from 4 to 10.8 GHz. Then by inserting a rectangular metallic patch inside the U-shaped DRA, the bandwidth is increased more to achieve an operating band from 2.65 to 10.9 GHz. To validate these results, an experimental antenna prototype is fabricated and measured. The obtained measurement results show that the proposed antenna can provide an ultra-wide bandwidth and a symmetric bidirectional radiation patterns. With these features, the proposed antenna is suitable for ultra-wideband applications.

A Metamaterial based Monopole antenna for Satellite based Navigation Applications

2020 ◽  
Vol 1 (1) ◽  
pp. 10-14
Keyword(s):  
Patch Antenna ◽  
Monopole Antenna ◽  
Additional Band ◽  
Feed Line ◽  
Low Profile ◽  
Loaded Structure

A metamaterial-based monopole antenna which resonates at L (L1 and L5) and S band for the IRNSS applications is described. The antenna has a low profile and is nearly is four times smaller in size than a conventional patch antenna. The multifrequency behavior is realized using a reactively loaded structure for the monopole antenna resulting in operation at both monopole and dipole modes. The monopole resonates at S Band and the dipolar mode resonance at L5 band. The novelty of the configuration is in realizing an additional band by introducing small square slot in the loaded structure. Copper wires are used to balance the current between the two ground at the antenna and the CPW feed line. The performance of the antenna is evaluated using ANSYS HFSS.

A Metamaterial based Monopole antenna for Satellite based Navigation Applications

2020 ◽  
Vol 1 (1) ◽  
pp. 10-14
Keyword(s):  
Patch Antenna ◽  
Monopole Antenna ◽  
Additional Band ◽  
Feed Line ◽  
Low Profile ◽  
Loaded Structure

A metamaterial-based monopole antenna which resonates at L (L1 and L5) and S band for the IRNSS applications is described. The antenna has a low profile and is nearly is four times smaller in size than a conventional patch antenna. The multifrequency behavior is realized using a reactively loaded structure for the monopole antenna resulting in operation at both monopole and dipole modes. The monopole resonates at S Band and the dipolar mode resonance at L5 band. The novelty of the configuration is in realizing an additional band by introducing small square slot in the loaded structure. Copper wires are used to balance the current between the two ground at the antenna and the CPW feed line. The performance of the antenna is evaluated using ANSYS HFSS.

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