A Compact Wideband Antenna with DGS for IoT Applications using LoRa Technology

Roges, Rashmi; Malik, Praveen Kumar; Sharma, Sandeep

doi:10.1109/icetet-sip-2254415.2022.9791725

Cited by 9 publications

(4 citation statements)

References 20 publications

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“…In [28], a compact MPA with a double leaf-shaped structure was hosted on an FR-4 substrate, featuring dimensions of 22× 34 mm 2 . Covering all sub 1-GHz LoRa bands, including 433 MHz, 915 MHz, and 868 MHz, the antenna suits diverse LoRa applications.…”

Section: Introductionmentioning

confidence: 99%

Machine Learning-Optimized Compact Frequency Reconfigurable Antenna With RSSI Enhancement for Long-Range Applications

Yahya,

Soeung,

Rahim

et al. 2024

IEEE Access

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This study presents an innovative and compact monopole antenna with dual-band frequency reconfigurability for LoRa applications. It operates within the 915 MHz and 868 MHz frequencies, aligning with the designated bands for use in America, Asia and Europe. No existing compact reconfigurable antenna with these features for LoRa applications within ISM bands below 1 GHz is known. Employing an economical FR-4 substrate in its design, the antenna attains a compact size of 40 × 42 mm 2 (0.12 λ 0 × 0.12 λ 0 ), where λ 0 denotes the wavelength in free space corresponding to 868 MHz. A single RF PIN diode enables seamless switching between 868 MHz and 915 MHz bands. Design, simulation, and optimization employed CST MWS ® software. Supervised regression Machine Learning (ML) models predicted resonance frequencies, with Gaussian Process Regression emerging as optimal, achieving Rsquared and variance scores of 92.87% and 93.77%, respectively. A maximum gain of 2 dBi at 915 MHz and 70% efficiency, boasting good radiation patterns and matching was demonstrated by the antenna. Experimental validation in a football field at Universiti Teknologi PETRONAS, Malaysia, assessed the proposed antenna's performance on a LoRa transceiver system based on LoRa SX1276. The Received Signal Strength Indicator (RSSI) of the proposed antenna consistently exceeded the conventional commercially available monopole antenna by an average of −12 dBm at every point up to 300 m, showcasing enhanced signal reception. The antenna proves promising for wireless sensor nodes in long-range applications.INDEX TERMS Dual-band, LoRa, PIN-diode, reconfigurable, RSSI.

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Section: Introductionmentioning

confidence: 99%

Machine Learning-Optimized Compact Frequency Reconfigurable Antenna With RSSI Enhancement for Long-Range Applications

Yahya,

Soeung,

Rahim

et al. 2024

IEEE Access

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“…There have been a number of documented antenna designs [ 7 , 16 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 ] for LoRa applications over the last decade. The authors in [ 7 ] reported the design of a miniaturized antenna for LoRa sensor node IoT application on an FR-4 substrate.…”

Section: Introductionmentioning

confidence: 99%

“…A compact wideband double leaf-shaped MPA was reported in [ 42 ]. The antenna was prototyped on an FR-4 material and had a total size of 22 × 34 mm 2 .…”

Section: Introductionmentioning

confidence: 99%

Triple-Band Reconfigurable Monopole Antenna for Long-Range IoT Applications

Yahya

Soeung

Singh

et al. 2023

Sensors

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In this study, a novel reconfigurable triple-band monopole antenna for LoRa IoT applications is fabricated on an FR-4 substrate. The proposed antenna is designed to function at three distinct LoRa frequency bands: 433 MHz, 868 MHz, and 915 MHz covering the LoRa bands in Europe, America, and Asia. The antenna is reconfigurable by using a PIN diode switching mechanism, which allows for the selection of the desired operating frequency band based on the state of the diodes. The antenna is designed using CST MWS® software 2019 and optimized for maximum gain, good radiation pattern and efficiency. The antenna with a total dimension of 80 mm × 50 mm × 0.6 mm (0.12λ0×0.07λ0 × 0.001λ0 at 433 MHz) has a gain of 2 dBi, 1.9 dBi, and 1.9 dBi at 433 MHz, 868 MHz, and 915 MHz, respectively, with an omnidirectional H-plane radiation pattern and a radiation efficiency above 90% across the three frequency bands. The fabrication and measurement of the antenna have been carried out, and the results of simulation and measurements are compared. The agreement among the simulation and measurement results confirms the design’s accuracy and the antenna’s suitability for LoRa IoT applications, particularly in providing a compact, flexible, and energy efficient communication solution for different LoRa frequency bands.

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“…Many of these wireless sensors lack the processing power and data storage capacity to use Wi-Fi or conventional cellular networks for long-distance data transmission. A Low Power Wide Area Network (LPWAN) Lora can operate on 433MHz, 868MHz in Europe, and 915MHz in the United States [8,9]. Due to its many benefits, microstrip antennas are now widely used in the field of wireless communication.…”

mentioning

confidence: 99%

Design and Analysis of Sphere Yagi antenna at 915 MHz Band for LoRaWAN Application

Haque,

Azman Zakariya,

Mohamad

et al. 2023

J. Phys.: Conf. Ser.

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Using a frequency of 915 MHz as an operating point, this project has analyzed and refined the design of a Sphere Yagi antenna. In CST, we have begun the research phase and created a preliminary design for an antenna. The simulation results have been analyzed, and then fabrication, testing, and measurement have been carried out. To begin the manufacturing process, a single-sided copper board is cut into sphere shapes, with the length of each plate varying depending on the size of the sphere. Drilling machines are then used to create a hole in each of the plates. As a result, everything is coming together nicely. In addition, both indoor and outdoor settings have been used for testing and experiments. Therefore, the antenna design works well in 915 MHz frequency, but the signal weakens when it travels more than 100 meters away. An improved antenna transmitter’s power output can fix this. This project can be extended to cover the 2.4 GHz and 5 GHz frequencies. So, the antenna layout can be employed to improve the wireless connection of communication devices that need extensive range.

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A Compact Wideband Antenna with DGS for IoT Applications using LoRa Technology

Cited by 9 publications

References 20 publications

Machine Learning-Optimized Compact Frequency Reconfigurable Antenna With RSSI Enhancement for Long-Range Applications

Machine Learning-Optimized Compact Frequency Reconfigurable Antenna With RSSI Enhancement for Long-Range Applications

Triple-Band Reconfigurable Monopole Antenna for Long-Range IoT Applications

Design and Analysis of Sphere Yagi antenna at 915 MHz Band for LoRaWAN Application

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