scholarly journals Innovative Design and Analysis of an Electrically Small Reconfigurable Antenna for GPS and Blue Tooth Applications

2021 ◽  
Vol 11 (5) ◽  
pp. 7684-7688
Author(s):  
H. R. Katireddy ◽  
M. V. Narayana ◽  
G. Immadi
Keyword(s):  
Impedance Matching ◽  
Reconfigurable Antenna ◽  
Pin Diode ◽  
Planar Antenna ◽  
Electrically Small Antennas ◽  
Innovative Design ◽  
Circular Loop ◽  
Small Antennas ◽  
Narrow Bandwidth ◽  
Small Antenna

In this paper, an electrically small, planar antenna with broad side radiation pattern is presented. The design contains a dipole and a segmented circular loop which works equivalent to that of a magnetic dipole. A circular patch with slots is used to provide impedance matching. In general, electrically small antennas suffer from narrow bandwidth. In this paper, the reconfigurability of the small antenna for two different applications, 1.5GHz and 2.4GHz, is discussed. This reconfigurability was achieved by using a BAR 64-03W pin diode to adjust the resonant frequency. Two reconfigurable frequency bands were achieved at 1.5GHz and 2.4GHz with broad side radiation patterns.

scholarly journals A High-Efficiency Compact Planar Antenna for ISM Wireless Systems

2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
Tao Zhou ◽  
Yazi Cao ◽  
Zhiqun Cheng ◽  
Martine Le Berre ◽  
Francis Calmon
Keyword(s):  
High Efficiency ◽  
Low Cost ◽  
Impedance Matching ◽  
Wireless Systems ◽  
Planar Antenna ◽  
Wireless Applications ◽  
Electrically Small Antenna ◽  
Lumped Elements ◽  
Small Antenna ◽  
Compact Planar

A novel high-efficiency compact planar antenna at 433 MHz with minimized size and low-cost and easy to integrate into the ISM wireless applications is designed, fabricated, and measured. Capacitive strips that are formed by cutting inter-digital slots and the meander lines on both sides are introduced to greatly reduce the antenna size yet maintain the high efficiency. The proposed antenna has a simple planar structure and occupies a small area (i.e., 45 × 30 mm2). This novel electrically small antenna can be operated well without any lumped elements for impedance matching. Details of the antenna design and experimental results are presented and discussed.

scholarly journals Overcoming Inherent Narrow Bandwidth and Low Radiation Properties of Electrically Small Antennas by Using an Active Interior-Matching Circuit

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 20622-20628
Author(s):  
Ayman A. Althuwayb ◽  
Mohammad Alibakhshikenari ◽  
Bal S. Virdee ◽  
Francisco Falcone ◽  
Ernesto Limiti
Keyword(s):  
Electrically Small Antennas ◽  
Small Antennas ◽  
Radiation Properties ◽  
Narrow Bandwidth

Metamaterial-inspired electrically small antenna for microwave applications

2021 ◽  
pp. 146442072110114
Author(s):  
Ahmed M Tamim ◽  
Mohammad RI Faruque ◽  
Mohammad T Islam
Keyword(s):  
High Frequency ◽  
Metamaterial Structure ◽  
Electrically Small Antennas ◽  
New Approach ◽  
Electrically Small Antenna ◽  
Small Antennas ◽  
Antenna Performance ◽  
Microwave Applications ◽  
Microwave Communication ◽  
Small Antenna

Electrically small antennas are becoming more important to compete with the rising modern civilization. Hence, this study presents a new approach of electrically small antenna inspired by a metamaterial structure which creates an impact by achieving a multi-band property that can be applied for different microwave applications. A high-frequency electromagnetic simulator was utilized to design, simulate, and analyze the antenna performance. About 58% reduction was achieved due to the incorporation of the modified electric field-driven capacitor-driven metamaterial. The initial length of the antenna was 0.61λ0 × 0.58λ0 × 0.12λ0; however, after embedding metamaterial, 58% reduction was achieved and the size of the electrical length of the reduced antenna becomes 0.254λ0 × 0.207λ0 × 0.013λ0, where λ0 denotes free-space wavelength. The electrical limitation factor (ka) of the antenna that was 0.94 (below 1) satisfied the conditions of electrically small antenna. The antenna achieved the highest measured gain of 4.79 dB. Due to its compact miniaturized size and resonance characteristics, the proposed antenna is compatible for broad spectrum of applications in the field of microwave communication.

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