scholarly journals Impact of Optical Transmission on Multiband OFDM Ultra-Wideband Wireless System With Fiber Distribution

2009 ◽  
Vol 27 (18) ◽  
pp. 4112-4123 ◽  
Author(s):  
M.N. Sakib ◽  
B. Hraimel ◽  
Xiupu Zhang ◽  
M. Mohamed ◽  
Wei Jiang ◽  
...  
Keyword(s):  
Optical Transmission ◽  
Ultra Wideband ◽  
Fiber Distribution ◽  
Wireless System ◽  
Multiband Ofdm

scholarly journals A Compact UWB Antenna with Independently Controllable Notch Bands

Sensors ◽  
2019 ◽  
Vol 19 (6) ◽  
pp. 1411 ◽  
Author(s):  
Amjad Iqbal ◽  
Amor Smida ◽  
Nazih Mallat ◽  
Mohammad Islam ◽  
Sunghwan Kim
Keyword(s):  
Group Delay ◽  
Ultra Wideband ◽  
Frequency Range ◽  
Uwb Antenna ◽  
Wireless System ◽  
Radiation Characteristics ◽  
Notched Band ◽  
Radiating Element ◽  
Wide Range ◽  
Shaped Section

A minimally-sized, triple-notched band ultra-wideband (UWB) antenna, useful for many applications, is designed, analyzed, and experimentally validated in this paper. A modified maple leaf-shaped main radiating element with partial ground is used in the proposed design. An E-shaped resonator, meandered slot, and U-shaped slot are implemented in the proposed design to block the co-existing bands. The E-shaped resonator stops frequencies ranging from 1.8–2.3 GHz (Advanced Wireless System (AWS1–AWS2) band), while the meandered slot blocks frequencies from 3.2–3.8 GHz (WiMAX band). The co-existing band ranging from 5.6–6.1 GHz (IEEE 802.11/HIPERLANband) is blocked by utilizing the U-shaped section in the feeding network. The notched bands can be independently controlled over a wide range of frequencies using specific parameters. The proposed antenna is suitable for many applications because of its flat gain, good radiation characteristics at both principal planes, uniform group delay, and non-varying transfer function ( S 21 ) for the entire UWB frequency range.

Flexible Multiband OFDM Ultra-Wideband Services Based on Optical Frequency Combs

2017 ◽  
Vol 9 (5) ◽  
pp. 393 ◽  
Author(s):  
Jing He ◽  
Fengting Long ◽  
Rui Deng ◽  
Jin Shi ◽  
Min Dai ◽  
...  
Keyword(s):  
Ultra Wideband ◽  
Optical Frequency ◽  
Optical Frequency Combs ◽  
Frequency Combs ◽  
Multiband Ofdm
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