Hanyang University · Engineering
Professor Saiful Islam's research lab specializes in the design and development of advanced millimeter-wave and sub-6 GHz antenna systems for next-generation wireless communication, with a strong focus on 5G and V2X (Vehicle-to-Everything) applications. The lab pioneers compact, reconfigurable, and high-gain antenna arrays featuring beam-steering, pattern reconfiguration, and multi-band operation using innovative structures such as PIN diode-controlled strips, meandered radiators, and integrated filters. Emphasis is placed on achieving low profile, wide spatial coverage, and efficient energy harvesting for IoT and mobile devices.
Figures are computed from collected data and may differ slightly.
To maintain the compactness of future 5G smartphones, integration of sub-6 GHz and millimeter-wave (mm-wave) bands is a challenging task due to the large frequency ratio. We, therefore, propose a single-fed triple-band antenna with a large frequency ratio. The proposed antenna is composed of a microstrip patch radiator with an inverted U-shaped slot for dual-band operation in the mm-wave frequencies (28 and 38 GHz). A meandered radiating structure is linked to the microstrip patch radiator throu
In this article, a dual-band integrated compact phased-antenna array is proposed for fifth-generation (5G) smartphone communication. The proposed single-layered substrate-based antenna array has a dual band, wideband, high gain, and wide beam-steering function. The dual bands were achieved by passive integration of meandered lines and a microstrip patch antenna using a dual-stub-based filter. Owing to the small size of the antenna array (56.65 mm <inline-formula xmlns:mml="http://www.w3.org/1998
The spatial coverage of a fifth-generation (5G) smartphone antenna array is an important factor to consider in the design and implementation of 5G wireless communication systems. In this article, we present a compact, low-profile, and reconfigurable radiation pattern millimeter-wave (mm-wave) smartphone antenna array that can provide high spatial coverage through its hybrid structure and beam-scanning capabilities. The proposed antenna array introduces p-i-n diode-controlled strips that enable b
We introduced a circularly arranged Vivaldi endfire antenna array combined with nona-band rectifiers to enhance the capability of receiving electromagnetic power to supply power for Internet of Thing (IoT) devices. The rectifier encompasses frequencies of 0.9, 1.4, 1.8, 2.1, 2.4, 2.6, 3.5, 4.9, and 5.8 GHz, primarily covering telecom and Wi-Fi operating frequencies. Higher efficiency values at a lower input power of -10 dBm were achieved as 73.98%, 54.54%, 63.16%, 27.14%, 59.58%, 56.60%, 46.62%,
A wide-spatial coverage, low-profile, pattern reconfigurable, millimeter-wave antenna array designed for Vehicle-to-Everything (V2X) communication systems, crucial for fifth-generation wireless networks. The array features a hybrid structure and beam-scanning capabilities, ensuring extensive spatial coverage in the n257 band. Utilizing PIN diode-controlled strips, the antenna enables vertical beam tilting up to ±40° on a car with less than 1 dB gain variation. Furthermore, the subarray achieves
This paper introduces a compact, low-profile, and pattern-reconfigurable millimeter-wave V2X antenna array. Its hybrid design, coupled with beam-scanning capabilities, facilitates extensive spatial coverage within the n257 band. By employing PIN diode-controlled strips, the antenna array achieves vertical beam tilting of up to ±40° on a vehicle with minimal gain deviation of under 1 dB. Moreover, the subarray can scan the beam within an angle of ±32° while maintaining a gain exceeding 8 dBi. The
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