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The internet of medical things equipped with 5G technology have become part of our everyday activities, and they will soon become integrated in to our bodies. In the future, 5G is expected to significantly lower the expense of diagnosing, ...

The growth in the popularity of reconfigurable antennas has been observed recently. Because of the fast progress of wireless communication technology in current wireless applications with large data rates, multimode and cognitive radio operations ...

Reconfigurable antennas play a vital role in wireless communications and many applications due to their high speed, polarization diversity, compact size, steerable diversity, low cost and multi-band function. Several techniques are introduced to ...

A reconfigurable antenna is antenna fit for dynamically varying its radiation and frequency properties in controllable and reversible manner. Reconfigurable antenna integrates an inner mechanism in order to provide a dynamic reaction.In previous ...

Microstrip antennas have many advantages as they are low-profile, suitable for conformal structure, and integrated with electronic circuits. The antenna characteristics can be easily modified by shape transformation. In this work, a multiband ...

In this letter, a reconfigurable single elemental Substrate Integrated Waveguide (SIW) antenna is developed aimed at operating at 28 GHz as well as 38 GHz. The two PIN diodes used as switching elements shift the antenna resonance between 28 and 38 ...

Reconfigurable antennas are the suitable candidates for modern wireless communication systems because of various advantages viz. compact size, low front-end processing, good isolation, sufficient out of band rejection and multifunctional ...

A polarization reconfigurable square microstrip patch antenna (SMSPA) based on plasma is introduced in this paper. The antenna is designed for mobile base-stations in 4G/5G wireless networks in sub-6-GHz band. The polarization reconfigurability is ...

This work proposes a novel frequency-reconfigurable circular patch antenna incorporated with a rectangular slot and a narrow slot capable of producing constant dipole-like radiation patterns. The antenna compactness is achieved with the ...

This paper presents design of a reconfigurable micro strip patch antenna by using RF MEMS. Primarily we have analyzed the performance of different shunt capacitive RF MEMS switches and eventually we have incorporated the switch on reconfigurable ...

In this paper, a new compact design of frequency reconfigurable slot antenna is presented. The proposed radiating patch consists of two symmetrical D shape slots and incorporates four PIN diodes with two stubs which cover a small dimension area of ...

This paper presents the design and analysis of IoT (Internet of Things) controlled frequency reconfigurable triple-band antenna for WiMAX, ISM (Industrial, Scientific, and Medical) band, and X band microwave sensing applications. The designed ...

Physical-layer based key generation schemes exploit the channel reciprocity for secret key extraction, which can achieve information-theoretic secrecy against eavesdroppers. Such methods, although practical, have been shown to be vulnerable against man-...

Nowadays, wireless communication systems require antennas able to operate in multiple frequency bands. Frequency reconfigurable antennas have been meet this need and become more advantageous and appreciated compared to conventional antennas. This paper ...

Heart shaped reconfigurable band notched UWB microstrip line fed monopole antenna using two mushrooms like electromagnetic band gaps (EBGs) loaded by two varactor diodes has been developed, examined and fabricated. The effect of EBG dimensions, on ...

Reconfigurable antennas receive more attention for many application due to their special characteristics like polarization diversity, multi band function and steerable diversity. However, reconfigurable antennas are capable of providing single and ...

Reconfigurable sensing antennas (RSA) play a significant role in modern internet-of-things (IOT) applications. The RSAs are capable of transmiting and receiving electromagnetic waves besides sensing different enviroment parameters. This paper ...

This article mainly focuses on the concept of cognitive radio paradigm in the ultra-wideband 3.1–10.6 GHz and recent trends of various antenna systems required for these applications. This paper also presents the working principle of cognitive ...

In this paper a compact reconfigurable antenna with switchable slot is designed and proposed, the slot is etched on the rectangular patch and inclusion of PIN diode which is used to switch the slot in ON and OFF states, the patch is fed by a probe ...

All antennas in which frequency and radiation patterns can be modified in a reversible and controlled manner are known as reconfigurable antennas. They are different from other antennas, as their mechanism of reconfiguration is located within the ...