scholarly journals Algorithm for the Fewest Arms Required by Multi-Band Linear Dipole Antenna

2021 ◽  
Author(s):  
Bing Xiao
Keyword(s):  
Dipole Antenna ◽  
Mode Analysis ◽  
Dipole Antennas ◽  
Characteristic Mode ◽  
Antenna Structure ◽  
Band Characteristic ◽  
Iot Devices ◽  
Linear Dipole ◽  
The Internet Of Things ◽  
Multi Band

Small linear dipole antennas with a multi-band characteristic are necessary for many strip or bar shaped gateway devices of the Internet of Things (IoT), for the connectivity in various communication protocols. However, the conventional methodology of designing multi-band dipole antennas is generally empirically based. More frequency bands usually mean even more arms/slots, which results in an increasingly bulky antenna. In this paper, we will introduce an algorithm of using the fewest arms to design a multi-band linear dipole antenna. This algorithm is based on sharing arms after the effective ranges of mode excitation are determined by characteristic mode analysis (CMA). By this algorithm, an exemplified designed penta-band dipole antenna is effective in covering 433, 868, 1176, 1575, and 2450 MHz bands for LPWAN, GNSS, and ISM applications, with only 2.5 pairs of arms. 50% of arms are reduced in comparison to traditional methods. This algorithm is convenient in practical dipole antenna design, and greatly simplifies the antenna structure so that they could be mounted into small IoT devices.

scholarly journals Algorithm for the Fewest Arms Required by Multi-Band Linear Dipole Antenna

2021 ◽  
Author(s):  
Bing Xiao
Keyword(s):  
Dipole Antenna ◽  
Mode Analysis ◽  
Dipole Antennas ◽  
Characteristic Mode ◽  
Antenna Structure ◽  
Band Characteristic ◽  
Iot Devices ◽  
Linear Dipole ◽  
The Internet Of Things ◽  
Multi Band

Small linear dipole antennas with a multi-band characteristic are necessary for many strip or bar shaped gateway devices of the Internet of Things (IoT), for the connectivity in various communication protocols. However, the conventional methodology of designing multi-band dipole antennas is generally empirically based. More frequency bands usually mean even more arms/slots, which results in an increasingly bulky antenna. In this paper, we will introduce an algorithm of using the fewest arms to design a multi-band linear dipole antenna. This algorithm is based on sharing arms after the effective ranges of mode excitation are determined by characteristic mode analysis (CMA). By this algorithm, an exemplified designed penta-band dipole antenna is effective in covering 433, 868, 1176, 1575, and 2450 MHz bands for LPWAN, GNSS, and ISM applications, with only 2.5 pairs of arms. 50% of arms are reduced in comparison to traditional methods. This algorithm is convenient in practical dipole antenna design, and greatly simplifies the antenna structure so that they could be mounted into small IoT devices.

scholarly journals Bandwidth Optimization of a Textile PIFA with DGS Using Characteristic Mode Analysis

Sensors ◽  
2021 ◽  
Vol 21 (7) ◽  
pp. 2516
Author(s):  
Bashar Bahaa Qas Elias ◽  
Ping Jack Soh ◽  
Azremi Abdullah Al-Hadi ◽  
Prayoot Akkaraekthalin ◽  
Guy A. E. Vandenbosch
Keyword(s):  
Wireless Body Area Network ◽  
Simulation Software ◽  
The Body ◽  
Mode Analysis ◽  
Area Network ◽  
Defected Ground Structure ◽  
Characteristic Mode ◽  
Antenna Structure ◽  
Rectangular Patch ◽  
Conventional Optimization

This work presents the design and optimization of an antenna with defected ground structure (DGS) using characteristic mode analysis (CMA) to enhance bandwidth. This DGS is integrated with a rectangular patch with circular meandered rings (RPCMR) in a wearable format fully using textiles for wireless body area network (WBAN) application. For this integration process, both CMA and the method of moments (MoM) were applied using the same electromagnetic simulation software. This work characterizes and estimates the final shape and dimensions of the DGS using the CMA method, aimed at enhancing antenna bandwidth. The optimization of the dimensions and shape of the DGS is simplified, as the influence of the substrates and excitation is first excluded. This optimizes the required time and resources in the design process, in contrast to the conventional optimization approaches made using full wave “trial and error” simulations on a complete antenna structure. To validate the performance of the antenna on the body, the specific absorption rate is studied. Simulated and measured results indicate that the proposed antenna meets the requirements of wideband on-body operation.

Algorithm for Fewest Arms of Multi-Band Linear Dipole Antenna

2022 ◽  
pp. 1-1
Author(s):  
Bing Xiao ◽  
Hang Wong ◽  
Yichen Wei ◽  
Lawrence K. Yeung
Keyword(s):  
Dipole Antenna ◽  
Linear Dipole ◽  
Multi Band

Characteristic Mode Analysis of U-Shaped Folded Dipole Antenna for WiMAX

2019 ◽  
Author(s):  
Quang Quan Phung ◽  
Tuan Hung Nguyen ◽  
Naobumi Michishita ◽  
Hiroshi Sato ◽  
Yoshio Koyanagi ◽  
...  
Keyword(s):  
Dipole Antenna ◽  
Mode Analysis ◽  
Characteristic Mode ◽  
Folded Dipole

scholarly journals Metamaterial superstrate microstrip patch antenna for 5G wireless communication based on the theory of characteristic modes

2019 ◽  
Vol 70 (3) ◽  
pp. 187-197
Author(s):  
Ehab K. I. Hamad ◽  
Ahmed Abdelaziz
Keyword(s):  
Wireless Communication ◽  
Patch Antenna ◽  
Split Ring Resonator ◽  
Microstrip Antennas ◽  
Unit Cell ◽  
Dual Band ◽  
Mode Analysis ◽  
Electromagnetic Properties ◽  
Characteristic Mode ◽  
Antenna Structure

Abstract Metamaterials (MTMs) have received considerable attention due to their novel electromagnetic properties. Their applications include enhancing gain and bandwidth in microstrip antennas. In this article, a dual band microstrip antenna design based on characteristic mode analysis (CMA) using MTM superstrate is proposed for 5G wireless communication. The CMA is used for the modelling, analysis and optimization of the proposed antenna to examine the underlying modal behaviour of the MTM unit cell and to guide mode excitation. The antenna structure consists of a microstrip feed line connected to a rectangular patch. Then triangular split ring resonator unit cell is inserted on the ground of a traditional patch antenna that resonates at 15 GHz to produce additional resonance at 10 GHz. A planar array of 2 × 3 triangle MTM unit cells is used as superstrate to improve the gain and bandwidth at both resonances simultaneously. The optimal distance between MTM superstrate and the antenna patch is determined using the Fabry-Perot cavity theory to maximize power directivity and efficiency of the proposed antenna. The CST microwave studio software is used to model and optimize the proposed antenna. A prototype of the designed antenna that was fabricated showed good agreement between measurement and simulation results.

scholarly journals An optimized ink-reducing hollowed-out arm meander dipole antenna structure for printed RFID tags

2016 ◽  
Vol 9 (2) ◽  
pp. 469-479 ◽  
Author(s):  
Adi M. J. Marindra ◽  
Pornanong Pongpaibool ◽  
Werayuth Wallada ◽  
Siwaruk Siwamogsatham
Keyword(s):  
Radio Frequency Identification ◽  
Dipole Antenna ◽  
Rfid Tags ◽  
Conductive Ink ◽  
Dipole Antennas ◽  
Antenna Structure ◽  
Rfid Tag ◽  
Antenna Performance ◽  
Consumption Reduction ◽  
Frequency Identification

This paper presents an optimized ink-reducing meander dipole antenna structure suitable for implementing printed radio frequency identification (RFID) tags. The proposed antenna designs contain empty ink-reducing hollowed-out areas along the antenna's arms such that the resulting antennas require much less conductive ink to produce yet still achieve decent antenna performance compared with the conventional solid-arm dipole antennas. The simulation results demonstrate that when the ratio between the width of the hollowed-out areas and the width of the antenna arms is about 0.6, the resulting RFID tag experiences a slight read range performance degradation of <10%, while it offers a sizeable ink consumption reduction of almost 50%.

scholarly journals Broadband design of U-shaped folded dipole antenna for WiMAX by using characteristic mode analysis

2019 ◽  
Vol 8 (8) ◽  
pp. 347-352
Author(s):  
Quang Quan Phung ◽  
Tuan Hung Nguyen ◽  
Naobumi Michishita ◽  
Hiroshi Sato ◽  
Yoshio Koyanagi ◽  
...  
Keyword(s):  
Dipole Antenna ◽  
Mode Analysis ◽  
Characteristic Mode ◽  
Folded Dipole
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