Mechanically Frequency Reconfigurable Antenna and its Application as a Fluid Level Detector for Wireless Sensor Networks

Raveendran, Athira; Mathur, Phalguni; Raman, Sujith

doi:10.23919/ursiap-rasc.2019.8738663

Cited by 8 publications

(3 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to improve the frequency agility of these applications and reduce the system circuit complexity, a frequency-tunable PAIA is highly desired. For example, when wirelessly powering sensors operating at different frequencies, the transmitter (power amplifier and antenna) is required to have the capability of frequency reconfiguration [4]- [6].…”

Section: Introductionmentioning

confidence: 99%

Highly Integrated PA-PIFA With a Wide Frequency Tuning Range

Huang

Zhu

et al. 2021

Antennas Wirel. Propag. Lett.

View full text Add to dashboard Cite

Where a licence is displayed above, please note the terms and conditions of the licence govern your use of this document.When citing, please reference the published version. Take down policyWhile the University of Birmingham exercises care and attention in making items available there are rare occasions when an item has been uploaded in error or has been deemed to be commercially or otherwise sensitive.

show abstract

Section: Introductionmentioning

confidence: 99%

Highly Integrated PA-PIFA With a Wide Frequency Tuning Range

Huang

Zhu

et al. 2021

Antennas Wirel. Propag. Lett.

View full text Add to dashboard Cite

show abstract

“…In such a scenario, reconfigurable antennas could provide sustainable solutions. Reconfigurable antenna systems eliminate the need to use multiple radiators to perform multiple tasks 9,10 . This feature of reconfigurable antennas facilitates the IoT systems to be compact and more power efficient 11,12 …”

Section: Introductionmentioning

confidence: 99%

“…Reconfigurable antenna systems eliminate the need to use multiple radiators to perform multiple tasks. 9,10 This feature of reconfigurable antennas facilitates the IoT systems to be compact and more power efficient. 11,12 A reconfigurable antenna uses a single radiator to modify either its radiation or frequency (or both) characteristics as per the requirement making the system power efficient and versatile.…”

Section: Introductionmentioning

confidence: 99%

Mechanically frequency reconfigurable antenna for WSN, WLAN, and LTE 2500 based internet of things applications

Mathur

Gopikrishna²,

Raman

2020

Int J RF Microw Comput Aided Eng

Self Cite

View full text Add to dashboard Cite

In this paper, the concept of a novel mechanically reconfigurable antenna with spectral diversity, for internet of things (IoT) applications is presented. The prototype consists of a rectangular microstrip patch antenna placed upon a dielectric slab with four end‐to‐end cavities that are perceived as binary bits. The status of each bit depends on the material filling it. Since four cavities are included in proposed system, a total of 16 combinations, each yielding unique impedance characteristic, are exhibited. Here, FR4 epoxy (εr = 4.4 and tanδ = 0.02) is used as substrate with 2.4 mm thickness. The same material is used to fill the cavities in one case, while, in the second case the cavities are filled with Rogers RT/duroid 6010/6010LM (tm) material that has dielectric constant, 10.2. It is shown that by using a higher dielectric constant material as filler, the range of variation of resonant frequency can be increased. In both cases, the prototype exhibits capability to reconfigure its operating bandwidth from 2.4GHz WLAN (2400‐2480 MHz) to LTE2500 (2496‐2690 MHz). Besides, for some combinations, the prototype covers a frequency span beyond LTE till 3000 MHz for wireless‐sensor‐network based applications. One among the potential application of the proposed design as a chipless RFID tag is also discussed in this work.

show abstract

Reconfigurable broadband printed monopole antenna for portable smart IoT applications

Al-Janabi

Kayhan

2021

Int J Communication

View full text Add to dashboard Cite

Summary The proposed work presents a design of a smart printed monopole antenna separated from a Hexagonal Matching Load (HML) with an air gap. The patch is fed by a coplanar waveguide, while the HML is connected to the ground plane through two pin diodes to realize antenna reconfiguration through controlling the surface current motion. The antenna structure is mounted on FR‐4 epoxy substrate with size of 23 mm × 30 mm to fit the portable devices. After running four different switching scenarios, an observable change in the antenna performance is demonstrated. The proposed antenna provides a gain of 3.1 dBi at 2.45 GHz when the two diodes are switched ON. However, the antenna gain is changed to 1.6 dBi when the two diodes are set OFF. It is demonstrated that the proposed technique shows an effective approach to control the antenna performance without the need for DC blocking capacitor for RF choke. Nevertheless, the Specific Absorption Rate (SAR) effects are evaluated with respect to the human head tissues for all considered scenarios. Finally, the antenna radiation leakages to the human body are also tested numerically and experimentally for validation.

show abstract

Mechanically Frequency Reconfigurable Antenna and its Application as a Fluid Level Detector for Wireless Sensor Networks

Cited by 8 publications

References 5 publications

Highly Integrated PA-PIFA With a Wide Frequency Tuning Range

Highly Integrated PA-PIFA With a Wide Frequency Tuning Range

Mechanically frequency reconfigurable antenna for WSN, WLAN, and LTE 2500 based internet of things applications

Reconfigurable broadband printed monopole antenna for portable smart IoT applications

Contact Info

Product

Resources

About