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This communication presents a low-profile fully metallic high gain circularly polarized resonant cavity antenna, with a novel single-layer metasurface as superstrate operating at 300 GHz. The unit cell of the metallic metasurface layer consists of perforated grids of hexagonal and octagonal-shaped radiating apertures. The metasurface superstrate layer acts as a polarization convertor from linear-to-circular, which provides left-handed circularly polarized (LHCP) radiation. For simplicity and less design difficulty, a low cost laser cutting brass technology is proposed to design the antenna at sub-terahertz. The proposed circularly polarized resonant cavity antenna prototype has a low-profile planar metallic structure of volume 2.6
Basem Aqlan; Mohamed Himdi; Hamsakutty Vettikalladi; Laurent Le-Coq. Experimental Realization of Sub-THz Circularly Polarized Antenna Based on Metasurface Superstrate at 300 GHz. Materials 2021, 14, 4796 .
AMA StyleBasem Aqlan, Mohamed Himdi, Hamsakutty Vettikalladi, Laurent Le-Coq. Experimental Realization of Sub-THz Circularly Polarized Antenna Based on Metasurface Superstrate at 300 GHz. Materials. 2021; 14 (17):4796.
Chicago/Turabian StyleBasem Aqlan; Mohamed Himdi; Hamsakutty Vettikalladi; Laurent Le-Coq. 2021. "Experimental Realization of Sub-THz Circularly Polarized Antenna Based on Metasurface Superstrate at 300 GHz." Materials 14, no. 17: 4796.
This article presents a 60 GHz coplanar fed slotted antenna based on substrate integrated waveguide (SIW) technology for beam-tilting applications. The longitudinal passive slots are fed via associated SIW holes adjacent to the coplanar feed while the main excitation is provided from the microstrip-to-SIW transition. The antenna array achieves an impedance bandwidth of 57–64 GHz with gains reaching to 12 dBi. The passive SIW slots are excited with various orientations of coplanar feeds and associated holes covering an angular beam-tilting from −56° to +56° with an offset of 10° at the central frequency. The novelty of this work is; beam-tilting is achieved without the use of any active/passive phase shifters which improves the design in terms of losses and provide a much simpler alternative compared to the complex geometries available in the literature at the 60 GHz band.
Hamsakutty Vettikalladi; Waleed Tariq Sethi; Mohammed Himdi; Majeed Alkanhal. 60 GHz beam-tilting coplanar slotted SIW antenna array. Frequenz 2021, 1 .
AMA StyleHamsakutty Vettikalladi, Waleed Tariq Sethi, Mohammed Himdi, Majeed Alkanhal. 60 GHz beam-tilting coplanar slotted SIW antenna array. Frequenz. 2021; ():1.
Chicago/Turabian StyleHamsakutty Vettikalladi; Waleed Tariq Sethi; Mohammed Himdi; Majeed Alkanhal. 2021. "60 GHz beam-tilting coplanar slotted SIW antenna array." Frequenz , no. : 1.
We present an experimental demonstration of a thermoelectric sensor coupled with a nanoantenna as an alternative option for detecting infrared energy. Two nanoantenna design (single element and an array) variations based on Yagi-Uda technology and one separate nano-thermoelectric junction array were fabricated and tested. The nanoantennas were tuned to operate and respond at a center wavelength of 1550 nm (193.5 THz) optical C-band window, but they also exhibited a resonance response when excited by lasers of various wavelengths (650 nm and 940 nm). The radiation-induced electric currents in the nanoantennas, coupled with a nano-thermoelectric sensor, produced a potential difference as per the Seebeck effect. With respect to the uniform thermal measurements of the reference nanoantenna, the experiments confirmed the detection properties of the proposed nanoantennas; the single element detected a peak percentage voltage hike of 28%, whereas the array detected a peak percentage voltage hike of 80% at the center wavelength. Compared to state-of-the-art thermoelectric designs, this was the first time that such peak percentage voltages were experimentally reported following a planar design based on the Seebeck principle.
Waleed Sethi; Olivier De Sagazan; Mohamed Himdi; Hamsakutty Vettikalladi; Saleh Alshebeili. Thermoelectric Sensor Coupled Yagi–Uda Nanoantenna for Infrared Detection. Electronics 2021, 10, 527 .
AMA StyleWaleed Sethi, Olivier De Sagazan, Mohamed Himdi, Hamsakutty Vettikalladi, Saleh Alshebeili. Thermoelectric Sensor Coupled Yagi–Uda Nanoantenna for Infrared Detection. Electronics. 2021; 10 (5):527.
Chicago/Turabian StyleWaleed Sethi; Olivier De Sagazan; Mohamed Himdi; Hamsakutty Vettikalladi; Saleh Alshebeili. 2021. "Thermoelectric Sensor Coupled Yagi–Uda Nanoantenna for Infrared Detection." Electronics 10, no. 5: 527.
In this paper, we show the development of a demand-side management solution (DSMS) for demand response (DR) aggregator and actual demand response operation cases in South Korea. To show an experience, Korea’s demand response market outline, functions of DSMS, real contracted capacity, and payment between consumer and load aggregator and DR operation cases are revealed. The DSMS computes the customer baseline load (CBL), relative root mean squared error (RRMSE), and payments of the customers in real time. The case of 10 MW contracted customers shows 108.03% delivery rate and a benefit of 854,900,394 KRW for two years. The results illustrate that an integrated demand-side management solution contributes by participating in a DR market and gives a benefit and satisfaction to the consumer.
Wonsuk Ko; Hamsakutty Vettikalladi; Seung-Ho Song; Hyeong-Jin Choi. Implementation of a Demand-Side Management Solution for South Korea’s Demand Response Program. Applied Sciences 2020, 10, 1751 .
AMA StyleWonsuk Ko, Hamsakutty Vettikalladi, Seung-Ho Song, Hyeong-Jin Choi. Implementation of a Demand-Side Management Solution for South Korea’s Demand Response Program. Applied Sciences. 2020; 10 (5):1751.
Chicago/Turabian StyleWonsuk Ko; Hamsakutty Vettikalladi; Seung-Ho Song; Hyeong-Jin Choi. 2020. "Implementation of a Demand-Side Management Solution for South Korea’s Demand Response Program." Applied Sciences 10, no. 5: 1751.
This paper focuses on the 60 GHz band, which is known to be very attractive for enabling next-generation abundant multi-Gbps wireless connectivity in 5G communication. We propose a novel concept of a double-layer antenna, loosely inspired from standard log-periodic schemes but with an aperiodic geometry, reduced size, and a limited number of elements while achieving excellent performance over the entire 60 GHz band. To maximize the antenna’s efficiency, we have developed a design that differs from those traditionally used for millimeter-wave communication applications. We aim to simultaneously maximize the gain, efficiency, and bandwidth. The reflection coefficient of the proposed design achieves a bandwidth of 20.66% from 53.9 GHz up to 66.3 GHz, covering the entire frequency band of interest. In addition, this proposed structure achieves a maximum realized gain of 11.8 dBi with an estimated radiation efficiency of 91.2%. The proposed antenna is simulated, fabricated, and tested in an anechoic chamber environment. The measurement data show a reasonable agreement with the simulation results, with respect to the bandwidth, gain, and side-lobe level over the operational spectrum.
Khaled Issa; Habib Fathallah; Muhammad A. Ashraf; Hamsakutty Vettikalladi; Saleh Alshebeili. Broadband High-Gain Antenna for Millimetre-Wave 60-GHz Band. Electronics 2019, 8, 1246 .
AMA StyleKhaled Issa, Habib Fathallah, Muhammad A. Ashraf, Hamsakutty Vettikalladi, Saleh Alshebeili. Broadband High-Gain Antenna for Millimetre-Wave 60-GHz Band. Electronics. 2019; 8 (11):1246.
Chicago/Turabian StyleKhaled Issa; Habib Fathallah; Muhammad A. Ashraf; Hamsakutty Vettikalladi; Saleh Alshebeili. 2019. "Broadband High-Gain Antenna for Millimetre-Wave 60-GHz Band." Electronics 8, no. 11: 1246.
Terahertz (THz) links will play a major role in high data rate communication over a distance of few meters. In order to achieve this task, antenna designs with high gain and wideband characteristics will spearhead these links. In this contribution, we present different antenna designs that offer characteristics better suited to THz communication over short distances. Firstly, a single-element antenna having a dipole and reflector is designed to operate at 300 GHz, which is considered as a sub-terahertz band. That antenna achieves a wide impedance bandwidth of 38.6% from 294 GHz to 410 GHz with a gain of 5.14 dBi. Secondly, two designs based on the same dipole structure but with added directors are introduced to increase the gain while maintaining almost the same bandwidth. The gains achieved are 8.01 dBi and 9.6 dBi, respectively. Finally, an array of 1×4 elements is used to achieve the highest possible gain of 13.6 dBi with good efficiency about 89% and with limited director elements for a planar compact structure to state-of-the-art literature. All the results achieved make the proposed designs viable candidates for high-speed and short-distance wireless communication systems.
Hamsakutty Vettikalladi; Waleed Sethi; Ahmad Fauzi Bin Abas; Wonsuk Ko; Majeed A. Alkanhal; Mohamed Himdi. Sub-THz Antenna for High-Speed Wireless Communication Systems. International Journal of Antennas and Propagation 2019, 2019, 1 -9.
AMA StyleHamsakutty Vettikalladi, Waleed Sethi, Ahmad Fauzi Bin Abas, Wonsuk Ko, Majeed A. Alkanhal, Mohamed Himdi. Sub-THz Antenna for High-Speed Wireless Communication Systems. International Journal of Antennas and Propagation. 2019; 2019 ():1-9.
Chicago/Turabian StyleHamsakutty Vettikalladi; Waleed Sethi; Ahmad Fauzi Bin Abas; Wonsuk Ko; Majeed A. Alkanhal; Mohamed Himdi. 2019. "Sub-THz Antenna for High-Speed Wireless Communication Systems." International Journal of Antennas and Propagation 2019, no. : 1-9.
In this letter we propose, for the very first time, a Molybdenum based Yagi‐Uda high‐directional nantenna. It is realized using simple Low Pressure Chemical Vapor Deposition (LPCVD) technique on a silicon substrate for 1550 nm standard optical communication system. The proposed nantenna uses Molybdenum metal as a ground plane while the Yagi‐Uda driven, radiator and directing elements are made up of Aluminum. Grounded Co‐Planar Waveguide (GCPW) technique is used for exciting the nanoantenna in CST Microwave Studio simulator. The nantenna achieves an impedance bandwidth of (193.37–193.71 THz) at a center frequency of 193.5 THz with a high gain and directivity of 12.9 and 16.6 dB, respectively. Near‐field and far‐field performance of the proposed nantenna is also demonstrated via extensive numerical simulations. The results achieved makes the proposed nantenna a viable candidate for applications in the field of nanophotonic circuits and photovoltaic devices working in the optical C‐band window.
Waleed Tariq Sethi; Olivier De Sagazan; Hamsakutty Vettikalladi; Habib Fathallah; Mohamed Himdi. Yagi-Uda nantenna for 1550 nanometers optical communication systems. Microwave and Optical Technology Letters 2018, 60, 2236 -2242.
AMA StyleWaleed Tariq Sethi, Olivier De Sagazan, Hamsakutty Vettikalladi, Habib Fathallah, Mohamed Himdi. Yagi-Uda nantenna for 1550 nanometers optical communication systems. Microwave and Optical Technology Letters. 2018; 60 (9):2236-2242.
Chicago/Turabian StyleWaleed Tariq Sethi; Olivier De Sagazan; Hamsakutty Vettikalladi; Habib Fathallah; Mohamed Himdi. 2018. "Yagi-Uda nantenna for 1550 nanometers optical communication systems." Microwave and Optical Technology Letters 60, no. 9: 2236-2242.
In this paper, a millimeter wave antenna based on SIW technology at 60-GHz is developed and studied in the context of Wireless Local Area Network (WLAN) and Wireless Personal Area Network (WPAN). Horn antennas that have the advantage of wide bandwidth based on SIW technology to be integrated with other circuits are studied. SIW horn is created on RT/duroid 5880 substrate having relative permittivity ε r =2.2 and loss tangent tan δ = 0.002 with a thickness of 0.508 mm; first a single element H-Plane SIW horn antenna at 60 GHz is designed then to get beam scanning in the desired area, a switched beam antenna array is designed simply by placing the antenna in a circular pattern with an angle (22.5° in our design). The antenna structures are modeled using CST Microwave Studio. The antenna achieves a peak gain of 12.6 dBi and the impedance bandwidth of 13 % for the reflection coefficient less than -10 dB. The results are verified by using another simulation software HFSS and found to be in good agreement.
Abdulwahid Al-Sayadi; Hamsakutty Vettikalladi; Majeed A. S. Alkanhal. Millimeter wave antenna based on SIW technology for WLAN/WPAN 5G networks at 60GHz. 2017 International Conference on Electrical and Computing Technologies and Applications (ICECTA) 2017, 1 -4.
AMA StyleAbdulwahid Al-Sayadi, Hamsakutty Vettikalladi, Majeed A. S. Alkanhal. Millimeter wave antenna based on SIW technology for WLAN/WPAN 5G networks at 60GHz. 2017 International Conference on Electrical and Computing Technologies and Applications (ICECTA). 2017; ():1-4.
Chicago/Turabian StyleAbdulwahid Al-Sayadi; Hamsakutty Vettikalladi; Majeed A. S. Alkanhal. 2017. "Millimeter wave antenna based on SIW technology for WLAN/WPAN 5G networks at 60GHz." 2017 International Conference on Electrical and Computing Technologies and Applications (ICECTA) , no. : 1-4.
In this letter, a hexa-band printed monopole antenna composed of various L-shape radiating elements is presented for various wireless applications. The antenna is designed to fully cover the CDMA (870–890 MHz), GSM (900–1800 MHz), DCS (1710–1880 MHz), PCS (1900 MHz), LTE-E/LTE-D (2300–2800 MHz), and WLAN (2.45/5.8 GHz) frequency bands. The proposed antenna achieves a gain of 1.8 dB, 3.17 dB, 3.23 dB, and 5.82 dB at respective bands. Fabrication of the antenna is completed on Rogers RT-5880 high frequency laminate with a finite ground plane having a rectangular slot on the other side of the substrate. The antenna is realized via standard printed circuit board (PCB) technology and its performance is validated by measurements in terms of s-parameters and radiation characteristics.
Waleed Tariq Sethi; Hamsakutty Vettikalladi; Habib Fathallah; Mohamed Himdi. Hexa-band printed monopole antenna for wireless applications. Microwave and Optical Technology Letters 2017, 59, 2816 -2822.
AMA StyleWaleed Tariq Sethi, Hamsakutty Vettikalladi, Habib Fathallah, Mohamed Himdi. Hexa-band printed monopole antenna for wireless applications. Microwave and Optical Technology Letters. 2017; 59 (11):2816-2822.
Chicago/Turabian StyleWaleed Tariq Sethi; Hamsakutty Vettikalladi; Habib Fathallah; Mohamed Himdi. 2017. "Hexa-band printed monopole antenna for wireless applications." Microwave and Optical Technology Letters 59, no. 11: 2816-2822.
In this paper, we explore the potential benefits of designing a dielectric resonator nantenna shaped in an equilateral triangular manner which is fed via a 1×2 corporate feed network. Utilizing full wave electromagnetic simulation software CST MWS, we demonstrated our proposed nantenna to work as a transceiver at optical C-band (1.55 μm) having a center frequency of 193.5 THz. Numerical results demonstrate that the proposed nantenna exhibits an end-fire directional radiation pattern of 9.57 dB with a wide impedance bandwidth of 2.58 % (189 THz - 194 THz) covering the standard optical C-band transmission window. The proposed nantenna can be a viable candidate for applications used in nanophotonics, inter and intra network optical wireless communication devices, optical sensing and optical energy harvesting etc.
Waleed Tariq Sethi; Hamsakutty Vettikalladi; Habib Fathallah; Mohamed Himdi. 1×2 Equilateral Triangular Dielectric Resonator Nantenna array for optical communication. 2017 International Conference on Information and Digital Technologies (IDT) 2017, 7 -9.
AMA StyleWaleed Tariq Sethi, Hamsakutty Vettikalladi, Habib Fathallah, Mohamed Himdi. 1×2 Equilateral Triangular Dielectric Resonator Nantenna array for optical communication. 2017 International Conference on Information and Digital Technologies (IDT). 2017; ():7-9.
Chicago/Turabian StyleWaleed Tariq Sethi; Hamsakutty Vettikalladi; Habib Fathallah; Mohamed Himdi. 2017. "1×2 Equilateral Triangular Dielectric Resonator Nantenna array for optical communication." 2017 International Conference on Information and Digital Technologies (IDT) , no. : 7-9.
This paper presents the concept of substrate integrated waveguide (SIW) technology along with superstrate layer, which is used to design a high gain antenna for 79 GHz automotive short range radar (SRR) applications. The maximum gain of a single antenna with superstrate layer is 14.6 dBi at 79 GHz, which is higher than the gain of a classical 2 × 2 array. It is found that the gain of a single superstrate layer increases nearly 8.78 dB at 79 GHz over its SIW base antenna. The CST simulated 2:1 VSWR bandwidth with superstrate layer is from 75.9 GHz to 81 GHz (6.46 %). The antenna patterns are found to be broadside all over the frequency band of interest. Also the results are verified using another simulation software HFSS.
Basem Aqlan; Hamsakutty Vettikalladi; Majeed A.S Alkanhal. High gain SIW-based antenna with superstrate for automotive radar applications. 2016 Loughborough Antennas & Propagation Conference (LAPC) 2016, 1 -5.
AMA StyleBasem Aqlan, Hamsakutty Vettikalladi, Majeed A.S Alkanhal. High gain SIW-based antenna with superstrate for automotive radar applications. 2016 Loughborough Antennas & Propagation Conference (LAPC). 2016; ():1-5.
Chicago/Turabian StyleBasem Aqlan; Hamsakutty Vettikalladi; Majeed A.S Alkanhal. 2016. "High gain SIW-based antenna with superstrate for automotive radar applications." 2016 Loughborough Antennas & Propagation Conference (LAPC) , no. : 1-5.
Nanoscale transmission and reception technologies will play a vital role and be part of the next generation communication networks. This applies for all application fields including imaging, health, biosensing, civilian, and military communications. The detection of light frequency using nanooptical antennas may possibly become a good competitor to the semiconductor based photodetector because of the simplicity of integration, cost, and inherent capability to detect the phase and amplitude instead of power only. In this paper, authors propose simulated design of a hexagonal dielectric loaded nantenna (HDLN) and explore its potential benefits at the standard optical C-band (1550 nm). The proposed nantenna consists of “Ag-SiO2-Ag” structure, consisting of “Si” hexagonal dielectric with equal lengths fed by “Ag” nanostrip transmission line. The simulated nantenna achieves an impedance bandwidth of 3.7% (190.9 THz–198.1 THz) and a directivity of 8.6 dBi, at a center frequency of 193.5 THz, covering most of the ITU-T standard optical transmission window (C-band). The hexagonal dielectric nantenna produces H E 20 δ modes and the wave propagation is found to be end-fire. The efficiency of the nantenna is proven via numerical expressions, thus making the proposed design viable for nanonetwork communications.
Waleed Tariq Sethi; Hamsakutty Vettikalladi; Habib Fathallah; Mohamed Himdi. Nantenna for Standard 1550 nm Optical Communication Systems. International Journal of Antennas and Propagation 2016, 2016, 1 -9.
AMA StyleWaleed Tariq Sethi, Hamsakutty Vettikalladi, Habib Fathallah, Mohamed Himdi. Nantenna for Standard 1550 nm Optical Communication Systems. International Journal of Antennas and Propagation. 2016; 2016 ():1-9.
Chicago/Turabian StyleWaleed Tariq Sethi; Hamsakutty Vettikalladi; Habib Fathallah; Mohamed Himdi. 2016. "Nantenna for Standard 1550 nm Optical Communication Systems." International Journal of Antennas and Propagation 2016, no. : 1-9.
In this paper a high gain aperture-coupled membrane antenna with a frequency selective surface (FSS) on a superstrate layer has been investigated. The base membrane antenna consists of a microstrip patch on the top of Roger RT-5580 substrate, supported by FR4 and is excited through an aperture fed by substrate-integrated waveguide (SIW). The CST Microwave Studio simulation results show that the proposed membrane structure has an impedance bandwidth (BW) of 8.85% from 75.97 to 82.96 GHz with a gain of 6.29 dBi at 79 GHz. To improve the gain, a superstrate layer is loaded above the membrane antenna, which increases the gain by 9.11 dB at 79 GHz. Furthermore by using FSS under superstrate layer, the gain is again increased by 2.5 dB. The total antenna structure provides a gain of 17.9 dBi at 79 GHz by keeping the same BW. The measured results are provided for the input matching (S11) only, the simulated results for the antenna gain and radiation patterns are obtained with the use of CST and are validated by using HFSS. The measured S11BW of the total antenna is from 75.57 to 84.18 GHz (10.89%), which is in agreement with the simulated results.
Basem Aqlan; Hamsakutty Vettikalladi; Majeed A.S. Alkanhal. Millimeter wave antenna with frequency selective surface (FSS) for 79 GHz automotive radar applications. International Journal of Microwave and Wireless Technologies 2016, 9, 281 -290.
AMA StyleBasem Aqlan, Hamsakutty Vettikalladi, Majeed A.S. Alkanhal. Millimeter wave antenna with frequency selective surface (FSS) for 79 GHz automotive radar applications. International Journal of Microwave and Wireless Technologies. 2016; 9 (2):281-290.
Chicago/Turabian StyleBasem Aqlan; Hamsakutty Vettikalladi; Majeed A.S. Alkanhal. 2016. "Millimeter wave antenna with frequency selective surface (FSS) for 79 GHz automotive radar applications." International Journal of Microwave and Wireless Technologies 9, no. 2: 281-290.
The design and the results of a single slot coupled substrate integrated waveguide (SIW) fed membrane antenna loaded with a superstrate layer are presented for 94 GHz communication system. The membrane antenna is designed using ANSYS HFSS and consists of 6 layers. The microstrip patch antenna (MPA) placed on the top pyralux substrate layer is excited by means of a longitudinal rectangular slot placed over the SIW structure in the bottom pyralux substrate. The simulated antenna impedance bandwidth is found to be 5 GHz (91.5–96.5 GHz) with a gain of 7 dBi. In order to improve the gain a superstrate layer is added above the membrane antenna. The maximum gain achieved is 14.4 dBi with an efficiency of 77.6% at 94 GHz. The results are verified using CST Microwave Studio and are found to be in good agreement.
Hamsakutty Vettikalladi. High Gain Superstrate Loaded Membrane Antenna Based on Substrate Integrated Waveguide Technology. International Journal of Antennas and Propagation 2015, 2015, 1 -8.
AMA StyleHamsakutty Vettikalladi. High Gain Superstrate Loaded Membrane Antenna Based on Substrate Integrated Waveguide Technology. International Journal of Antennas and Propagation. 2015; 2015 ():1-8.
Chicago/Turabian StyleHamsakutty Vettikalladi. 2015. "High Gain Superstrate Loaded Membrane Antenna Based on Substrate Integrated Waveguide Technology." International Journal of Antennas and Propagation 2015, no. : 1-8.
The last decade has witnessed a remarkable growth in the telecommunication industry. With the introduction of smart gadgets, the demand for high data rate and bandwidth for wireless applications have increased exponentially at the cost of exponential consumption of energy. The latter is pushing the research and industry communities to devise green communication solutions that require the design of energy saving devices and techniques in one part and ambient energy harvesting techniques in the other part. With the advent of nanocomponents fabrication technology, researchers are now able to tap into the THz frequency regime and fabricate optical low profile antennas at a nanoscale. Optical antennas have proved their potential and are revolutionizing a class of novel optical detectors, interconnectors, sensors, and energy harvesting related fields. Authors in this paper propose an equilateral triangular dielectric resonator nantenna (ETDRNA) working at 193.5 THz standard optical frequency. The simulated antenna achieves an impedance bandwidth from 192.3 THz to 197.3 THz with an end-fire directivity of 8.6 dBi, covering the entire standard optical window of C-band. Numerical demonstrations prove the efficiency of the nantenna at the frequencies of interest, making it a viable candidate for future green energy harvesting and high speed optical applications.
Waleed Tariq Sethi; Hamsakutty Vettikalladi; Habib Fathallah; Mohamed Himdi. Equilateral Triangular Dielectric Resonator Nantenna at Optical Frequencies for Energy Harvesting. International Journal of Antennas and Propagation 2015, 2015, 1 -10.
AMA StyleWaleed Tariq Sethi, Hamsakutty Vettikalladi, Habib Fathallah, Mohamed Himdi. Equilateral Triangular Dielectric Resonator Nantenna at Optical Frequencies for Energy Harvesting. International Journal of Antennas and Propagation. 2015; 2015 ():1-10.
Chicago/Turabian StyleWaleed Tariq Sethi; Hamsakutty Vettikalladi; Habib Fathallah; Mohamed Himdi. 2015. "Equilateral Triangular Dielectric Resonator Nantenna at Optical Frequencies for Energy Harvesting." International Journal of Antennas and Propagation 2015, no. : 1-10.
The design and the results of a single slot coupled substrate integrated waveguide (SIW)-fed membrane antenna and a 1 × 4 array is presented for 94 GHz communication system. The membrane antenna is designed using Ansys high frequency structure simulator and consists of six layers. The microstrip patch antenna placed on the top pyralux substrate layer is excited by means of a longitudinal rectangular slot placed over the SIW structure in the bottom pyralux substrate. The simulated antenna impedance bandwidth is found to be 5 GHz (91.5–96.5 GHz) for both single element and 1 × 4 array. Furthermore, the gain is found to be 7 and 13 dBi for the single element and the 1 × 4 array elements, respectively. The results are verified using Computer Simulation Technology (CST) Microwave Studio and are found to be in good agreement.
Hamsakutty Vettikalladi; Muhammad Kamran Saleem; Majeed A.S. Alkanhal. Membrane antenna array based on substrate integrated waveguide technology for 94 GHz communication systems. International Journal of Microwave and Wireless Technologies 2015, 8, 633 -641.
AMA StyleHamsakutty Vettikalladi, Muhammad Kamran Saleem, Majeed A.S. Alkanhal. Membrane antenna array based on substrate integrated waveguide technology for 94 GHz communication systems. International Journal of Microwave and Wireless Technologies. 2015; 8 (3):633-641.
Chicago/Turabian StyleHamsakutty Vettikalladi; Muhammad Kamran Saleem; Majeed A.S. Alkanhal. 2015. "Membrane antenna array based on substrate integrated waveguide technology for 94 GHz communication systems." International Journal of Microwave and Wireless Technologies 8, no. 3: 633-641.
A millimeter wave antenna is presented for 60 GHz communication using substrate integrated waveguide (SIW) technology along with dialectic resonators (DR). A very thin substrate of RT duroid 5880 having permittivity ε r = 2.23, loss tangent tan δ = 0.003 is used. Same material used for the DR having thickness 0.79 mm. H-shape slot in engraved at the top ground plane that acts as a source-radiating aperture. Two pieces of DR are placed on the top metal layer of the substrate to achieve wider bandwidth. The antenna structure is modeled using CST Microwave Studio. The simulated impedance bandwidth of the antenna is 10.33 % having a gain up to 5.5 dBi. The radiation efficiency of the antenna is found to be 81 %. The results are verified by using another simulation software HFSS and found to be in good agreement.
Hamsakutty Vettikalladi; Nadeem Ashraf; Majeed A.S Alkanhal. Millimeter wave antenna based on substrate integrated waveguide technology for 60-GHz communication system. 2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) 2014, 1 -2.
AMA StyleHamsakutty Vettikalladi, Nadeem Ashraf, Majeed A.S Alkanhal. Millimeter wave antenna based on substrate integrated waveguide technology for 60-GHz communication system. 2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM). 2014; ():1-2.
Chicago/Turabian StyleHamsakutty Vettikalladi; Nadeem Ashraf; Majeed A.S Alkanhal. 2014. "Millimeter wave antenna based on substrate integrated waveguide technology for 60-GHz communication system." 2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) , no. : 1-2.
The concept of substrate integrated waveguide (SIW) technology along with dielectric resonators (DR) is used to design antenna/array for 60 GHz communication systems. SIW is created in the substrate of RT/duroid 5880 having relative permittivityεr=2.23and loss tangenttanδ=0.003. H-shaped longitudinal slot is engraved at the top metal layer of the substrate. Two pieces of the DR are placed on the slot without any air gap. The antenna structures are modeled using CST Microwave Studio and then the results are verified using another simulation software HFSS. Simulation results of the two designs are presented; first a single antenna element and then to enhance the gain of the system a broadside array of1×4is presented in the second design. For the single antenna element, the impedance bandwidth is 10.33% having a gain up to 5.5 dBi. Whereas in an array of1×4elements, the impedance bandwidth is found to be 10.70% with a gain up to 11.20 dBi. For the single antenna element and1×4antenna array, the simulated radiation efficiency is found to be 81% and 78%, respectively.
Nadeem Ashraf; Hamsakutty Vettikalladi; Majeed A. S. Alkanhal. A DR Loaded Substrate Integrated Waveguide Antenna for 60 GHz High Speed Wireless Communication Systems. International Journal of Antennas and Propagation 2014, 2014, 1 -9.
AMA StyleNadeem Ashraf, Hamsakutty Vettikalladi, Majeed A. S. Alkanhal. A DR Loaded Substrate Integrated Waveguide Antenna for 60 GHz High Speed Wireless Communication Systems. International Journal of Antennas and Propagation. 2014; 2014 ():1-9.
Chicago/Turabian StyleNadeem Ashraf; Hamsakutty Vettikalladi; Majeed A. S. Alkanhal. 2014. "A DR Loaded Substrate Integrated Waveguide Antenna for 60 GHz High Speed Wireless Communication Systems." International Journal of Antennas and Propagation 2014, no. : 1-9.
In order to achieve wide bandwidth and high gain, we propose a stacked antenna structure having a microstrip aperture coupled feeding technique with a mounted Horn integrated on it. With optimized parameters, the single antenna element at a center frequency of 60 GHz, exhibits a wide impedance bandwidth of about 10.58% (58.9–65.25 GHz) with a gain and efficiency of 11.78 dB and 88%, respectively. For improving the gain, we designed a 2 × 2 and 4 × 4 arrays with a corporate feed network. The side lobe levels were minimized and the back radiations were reduced by making use of a reflector at distance from the corporate feed network. The array structure resulted in improved gain of 15.3 dB with efficiency of 83%, while the array structure provided further gain improvement of 18.07 dB with 68.3% efficiency. The proposed design is modelled in CST Microwave Studio. The results are verified using HFSS, which are found to be in good agreement.
Hamsakutty Vettikalladi; Waleed Tariq Sethi; Majeed A. Alkanhal. High Gain and High Efficient Stacked Antenna Array with Integrated Horn for 60 GHz Communication Systems. International Journal of Antennas and Propagation 2014, 2014, 1 -8.
AMA StyleHamsakutty Vettikalladi, Waleed Tariq Sethi, Majeed A. Alkanhal. High Gain and High Efficient Stacked Antenna Array with Integrated Horn for 60 GHz Communication Systems. International Journal of Antennas and Propagation. 2014; 2014 (12):1-8.
Chicago/Turabian StyleHamsakutty Vettikalladi; Waleed Tariq Sethi; Majeed A. Alkanhal. 2014. "High Gain and High Efficient Stacked Antenna Array with Integrated Horn for 60 GHz Communication Systems." International Journal of Antennas and Propagation 2014, no. 12: 1-8.
A benzocyclobutene (BCB) silicon (Si) based wideband antenna for millimeter wave applications is presented. The antenna consists of multilayer with one layer of BCB and the remaining three layers of Si. A patch is etched on the Si substrate above the air gap, which is excited through a slot. This architecture of slot, air gap, and patch will produce wide bandwidth by merging each one of resonances. The simulated results show that the antenna provides an dB bandwidth of 9.7GHz (17%) starting from 51.5GHz to 61.2GHz around 57GHz central frequency. The antenna provides a maximum gain of 8.9dBi with an efficiency of 70%.
Hamsakutty Vettikalladi; Majeed Alkanhal. BCB-Si Based Wide Band Millimeter Wave Antenna Fed by Substrate Integrated Waveguide. International Journal of Antennas and Propagation 2013, 2013, 1 -4.
AMA StyleHamsakutty Vettikalladi, Majeed Alkanhal. BCB-Si Based Wide Band Millimeter Wave Antenna Fed by Substrate Integrated Waveguide. International Journal of Antennas and Propagation. 2013; 2013 (5):1-4.
Chicago/Turabian StyleHamsakutty Vettikalladi; Majeed Alkanhal. 2013. "BCB-Si Based Wide Band Millimeter Wave Antenna Fed by Substrate Integrated Waveguide." International Journal of Antennas and Propagation 2013, no. 5: 1-4.