Metamaterial-Based Wearable Microstrip Patch Antennas

2014 ◽  
pp. 518-556 ◽  
Author(s):  
J. G. Joshi ◽  
Shyam S. Pattnaik
Keyword(s):  
Loading Condition ◽  
Size Reduction ◽  
Patch Antennas ◽  
Microstrip Patch Antennas ◽  
Microstrip Patch ◽  
Wearable Antennas ◽  
Antenna Performance ◽  
Bending Effect ◽  
Resonant Modes ◽  
Sub Wavelength

This chapter presents metamaterial-based wearable, that is, textile-based, antennas for Wi-Fi, WLAN, ISM, BAN and public safety band applications, which have been designed, fabricated, and tested. Textile substrates like polyester and polypropylene are used to design and fabricate these antennas. The metamaterial inclusions are directly used to load the different microstrip patch antennas on the same substrate, which significantly enhances the gain and bandwidth with considerable size reduction. The microstrip patch antenna generates sub-wavelength resonances under loading condition due to the modifications of its resonant modes. The DNG and SNG metamaterials are used to load the microstrip patch antennas for size reduction by generating the sub-wavelength resonances. The simulated and measured results are found to be in good agreement for all the presented wearable antennas. The bending effect on antenna performance due to human body movements is also presented in this chapter.

Metamaterial-Based Wearable Microstrip Patch Antennas

2018 ◽  
pp. 444-488
Author(s):  
J. G. Joshi ◽  
Shyam S. Pattnaik
Keyword(s):  
Loading Condition ◽  
Size Reduction ◽  
Patch Antennas ◽  
Microstrip Patch Antennas ◽  
Microstrip Patch ◽  
Wearable Antennas ◽  
Antenna Performance ◽  
Bending Effect ◽  
Resonant Modes ◽  
Sub Wavelength

This chapter presents metamaterial-based wearable, that is, textile-based, antennas for Wi-Fi, WLAN, ISM, BAN and public safety band applications, which have been designed, fabricated, and tested. Textile substrates like polyester and polypropylene are used to design and fabricate these antennas. The metamaterial inclusions are directly used to load the different microstrip patch antennas on the same substrate, which significantly enhances the gain and bandwidth with considerable size reduction. The microstrip patch antenna generates sub-wavelength resonances under loading condition due to the modifications of its resonant modes. The DNG and SNG metamaterials are used to load the microstrip patch antennas for size reduction by generating the sub-wavelength resonances. The simulated and measured results are found to be in good agreement for all the presented wearable antennas. The bending effect on antenna performance due to human body movements is also presented in this chapter.

Multidirectional Circular Microstrip Patch Antenna Strain Sensor

2011 ◽  
Author(s):  
Ali Daliri ◽  
Chun H. Wang ◽  
Sabu John ◽  
Amir Galehdar ◽  
Wayne S. T. Rowe ◽  
...  
Keyword(s):  
Patch Antenna ◽  
Strain Sensor ◽  
Microstrip Patch Antenna ◽  
Strain Sensors ◽  
Current Sensor ◽  
Patch Antennas ◽  
Microstrip Patch Antennas ◽  
Microstrip Patch ◽  
Antenna Performance ◽  
Software Packages

In this paper, a new design for microstrip patch antenna strain sensors is proposed. The new antenna sensor works based on the meandered microstrip patch antennas. It is threefold more sensitive than previously proposed circular microstrip patch antenna strain sensors. Also, the overall physical dimension of the new antenna sensor is reduced by the factor of five. The current sensor is able to detect strain in all directions. In order to design the antenna sensor, two available commercial FEM software packages ANSYS™ and HFSS™ are used. Both experimental and FEM results corroborate the multidirectional feature of the new antenna sensor. Also, the effect of the hole size in the structure (for coaxial connection to the antenna) on the antenna performance has been studied. Based on the results obtained, the antenna sensor can be recommended for use in structural health monitoring for strain-based damage detection in aerospace structures.

scholarly journals A Review on Microstrip Patch Antenna Performance Improvement Techniques on Various Applications

2021 ◽  
Vol 3 (3) ◽  
pp. 175-189
Author(s):  
G. Christina
Keyword(s):  
Performance Improvement ◽  
Signal Transmission ◽  
Single Point ◽  
Patch Antennas ◽  
Radio Waves ◽  
Large Signal ◽  
Printed Antennas ◽  
Microstrip Patch Antennas ◽  
Microstrip Patch ◽  
Antenna Performance

Antennas are metallic structure elements developed for transmitting signals through radio waves. Nowadays, antennas are available in different shape depending upon their application and signal strength. The antennas which are employed for space and large signal communication utilizes a bowl shape structure for focusing the signals on a single point. Certain antennas are designed to move on both horizontal and vertical directions for their signal transmission. The microstrip patch antennas are very small in size and it comes under the type of printed antennas. The microstrip patch antennas are widely employed on mobile phone communications and medical applications. The performances of the microstrip patch antennas are increased in recent years and the motive of the review work is to analyse the methodology followed behind it. In the same way, the work analyses the merits and limitations of the recent techniques developed for the performance improvement of the microstrip patch antennas.

scholarly journals Improving the Performance of a Microstrip Antenna by Adding a Slot into Different Patch Designs

2021 ◽  
Vol 11 (4) ◽  
pp. 7469-7476
Author(s):  
M. J. Hakeem ◽  
M. M. Nahas
Keyword(s):  
Microstrip Antenna ◽  
Low Cost ◽  
Ground Plane ◽  
Front Surface ◽  
Dielectric Substrate ◽  
Patch Antennas ◽  
High Frequency Structure Simulator ◽  
Microstrip Patch Antennas ◽  
Microstrip Patch ◽  
Antenna Performance

Microstrip patch antennas are attractive for communication applications due to their small size, low cost, and easy fabrication. Regardless of the diverse usage of these antennas, their bandwidth and efficiency are still limited and need to be improved. Therefore, this paper aims to enhance the bandwidth and efficiency of a microstrip antenna by inserting a slot into various patch designs. Flame Retardant (FR4) material is used in the dielectric substrate and the antenna is fed by a microstrip line. Virtually, the antenna performance is attempted to be optimized through empirical investigations of feedline lengths, slot sizes and positions, and ground plane dimensions and locations. To achieve the results, the High Frequency Structure Simulator (HFSS) is used, and the paper concludes by showing that the antenna performance is enhanced by the slot, and the return loss is significantly reduced when the ground plane is moved to the front surface of the antenna.

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