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Jeong-Geun Kim and Kang-Hee Lee
In this paper, a 4-bit digital step attenuator using 0.25 µm GaN HEMT technology for wideband radar systems is presented. A switched-path attenuator topology with resistive T-type attenuators and double-pole double-throw (DPDT) switches was used to achie...
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Miziya Keshkar, Raja Muthalagu, Abdul Rajak and Libin K. Mathew
Interference mitigation in L-band digital aeronautic communication systems from legacy users is vital due to stringent safety requirements and steady-state increase in air traffic. This paper proposes an L-band digital aeronautic communication systems re...
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Jeong-Geun Kim and Donghyun Baek
This paper presents a Ku-band transmit and receive IC in 0.13 µm CMOS technology for mobile satellite communication beamforming systems. A Ku-band transmit and receive IC is composed of a bi-directional amplifier, a 6-bit phase shifter, and a 6-bit digit...
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Xia Shang, Hua Zhou and Huayong Yang
Hydraulic pulsation attenuators (HPA) are commonly used to suppress the noise and vibration in fluid power systems. However, most existing HPAs lack a reasonable optimization strategy and effective methods to improve the performance of HPAs. This paper p...
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J. Cameron McNatt, Aaron Porter and Kelley Ruehl
This numerical study compares the wave field generated by the spectral wave action balance code, SNL-SWAN, to the linear-wave boundary-element method (BEM) code, WAMIT. The objective of this study is to assess the performance of SNL-SWAN for modeling wav...
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Kim Nielsen and Jonas Bjerg Thomsen
The critical function of keeping a floating Wave Energy Converter in position is done by a mooring system. Several WECs have been lost due to failed moorings, indicating that extreme loads, reliability and durability are very important aspects. An unders...
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Tomás Echaveguren, Sergio Vargas, Juan Ñancufil
Pág. Page 175 - 184
In a long descending slopes heavy vehicles might lose control and runaway downgrade. To mitigate the potential damage, exist several systems that permits heavy vehicles leave the lane and stop. These systems are known as Arrestor Bed (AB). Design Standar...
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