A Frequency Reconfigurable Compact Planar Inverted-F Antenna for Portable Devices

Adnan Ghaffar,Francisco Flalcone,Ahsan Altaf,Salahuddin Khan,Mohammad Alibakhshikenari,Xue Jun Li,Ernesto Limiti,Aayush Aneja,Francesco D'Agostino

doi:10.1155/2022/7239608

Abstract

In this paper, a low-profile, compact size, inexpensive, and easily integrable frequency reconfigurable antenna system is proposed. The proposed antenna consists of an inverted-F shape antenna, capacitors, and switching PIN diodes. The designed antenna element is fabricated on easy available and less expensive FR-4 substrate ( ε r = 4.4, tan δ = 0.02). The switching diodes are incorporated within the radiating structure of the antenna design, and by changing the different states of PIN diodes, frequency reconfigurable response is achieved. While adjusting the different states of the diodes, the antenna resonates between 0.841 GHz and 2.12 GHz and covers six different frequency bands. The proposed system has compact size of 44 × 14 × 3.2 mm 3 . The gain of the antenna is between 1.89 and 2.12 dBi. The measurement results shows the good agreement with simulated results for different key performance parameters. Additionally, the proposed antenna shows omni-directional far-field characteristics for various different frequencies.

Highlights

There is a high demand of low-profile, efficient, compact, high-speed, planar, inexpensive, and integrable devices [1]. ese devices have various applications in different roles within modern telecommunication industry
Antenna is an inevitable part of advances communication systems and plays an increasingly important role in modern electronic devices. ey are mostly used for applications requiring constant functional properties, such as fixed polarization, beam-width, far-field characteristics, and so on
A frequency reconfigurable antenna for GSM 850/ 900 and UMTS 2100 frequency bands is proposed. e proposed antenna system consists of a radiating element, vias, and two PIN diodes. is system is designed on an FR-4 substrate, and PIN diodes are used to achieve reconfigurable response. e design, working principle, and effects of different parameters are discussed

Summary

Introduction

There is a high demand of low-profile, efficient, compact, high-speed, planar, inexpensive, and integrable devices [1]. ese devices have various applications in different roles within modern telecommunication industry. Erefore, it is believed that to support the challenging characteristics, for instance, high data rates, high bandwidths, and low latency, of modern wireless communication systems, there is a requirement of multi-functional, low-cost, compact, and easy to fabricate and integrate antenna systems which must address these challenges and provide additional services without increasing the complexity and size of the circuitry. Enhancement in devices, components, and subsystems will create new challenges To address these demands, it will be necessary and reasonable to design a flexible, compact, inexpensive, controllable, and adjustable antenna system. Ese antennas offer effective and promising solutions to various different challenges and help to improve the efficiency of the system They are compact in size, low-cost, and integrable. A detailed literature review is conducted to provide readers a brief summary of the existing works

Related Work

Results and Discussion

Conclusion