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Congestion control has become a research focus with the development of network communication technology. Random early detection (RED) for queue management techniques is the most effective method. However, RED is particularly sensitive to the traffic load and the parameters of the scheme itself. When the traffic load is low, the bandwidth is underutilized, whereas when the traffic load is high, the...
A broadband two-layered frequency selective surface with miniaturized elements (MEFSS) is presented in this paper. This two-layered MEFSS designed working in X band and Ku band has a low sensitivity to the incident angle and polarization. More important, this two-layered MEFSS has a maximally flat response at low incident angles.
A new design of dual band and dual circular-polarized micro-strip antenna array is presented in this paper. The 8-elements micro-strip antenna array is designed with two 2×2 antenna arrays, one is working at 2.2GHz radiating left circular electromagnetic wave, while the other one is working at 2.0GHz receiving right circular electromagnetic wave simultaneously. A novel placement is used, which makes...
A tunable and switchable multiwavelength passively mode-locked fiber laser by using a semiconductor saturable absorber mirror (SESAM) and an inline birefringence fiber filter is proposed and demonstrated. By properly rotating the polarization controllers (PCs), up to 7-wavelength mode-locked pulses in 3-dB bandwidth with 3.65-nm channel spacing are obtained. The wavelength switchable operation is...
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