GaN power transistors in narrow and wide bandwidth applications

2008 ◽  
Author(s):  
P. Wright ◽  
J. Lees ◽  
P.J. Tasker ◽  
J. Benedikt
Keyword(s):  
Wide Bandwidth ◽  
Power Transistors

THREE INTEGRATED GAINS OF WIDE BANDWIDTH MULTI-PUMPING RAMAN OPTICAL AMPLIFIER: THE MAXIMUM FLATNESS

2006 ◽  
Vol 16 (2) ◽  
pp. 1-14
Author(s):  
Moawad I. Moawad ◽  
Mahmoud M. A. Eid ◽  
Abd El-Naser A. Mohammed ◽  
Mahmoud M.A. Abd El-Whab
Keyword(s):  
Optical Amplifier ◽  
Wide Bandwidth

Ultra wide bandwidth v.a.d. fibre

1980 ◽  
Vol 16 (10) ◽  
pp. 391 ◽  
Author(s):  
M. Nakahara ◽  
S. Sudo ◽  
N. Inagaki ◽  
K. Yoshida ◽  
S. Shibuya ◽  
...  
Keyword(s):  
Wide Bandwidth

scholarly journals Fabrication and characterization of resistive double square loop arrays for ultra-wide bandwidth microwave absorption

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ji-Young Jeong ◽  
Je-Ryung Lee ◽  
Hyeonjin Park ◽  
Joonkyo Jung ◽  
Doo-Sun Choi ◽  
...  
Keyword(s):  
Sheet Resistance ◽  
Manufacturing Process ◽  
End Milling ◽  
Milling Process ◽  
Wide Bandwidth ◽  
Machined Surface ◽  
Array Pattern ◽  
Micro End Milling ◽  
Array Structures ◽  
Printing Processes

AbstractMicrowave absorbers using conductive ink are generally fabricated by printing an array pattern on a substrate to generate electromagnetic fields. However, screen printing processes are difficult to vary the sheet resistance values for different regions of the pattern on the same layer, because the printing process deposits materials at the same height over the entire surface of substrate. In this study, a promising manufacturing process was suggested for engraved resistive double square loop arrays with ultra-wide bandwidth microwave. The developed manufacturing process consists of a micro-end-milling, inking, and planing processes. A 144-number of double square loop array was precisely machined on a polymethyl methacrylate workpiece with the micro-end-milling process. After engraving array structures, the machined surface was completely covered with the developed conductive carbon ink with a sheet resistance of 15 Ω/sq. It was cured at room temperature. Excluding the ink that filled the machined double square loop array, overflowed ink was removed with the planing process to achieve full filled and isolated resistive array patterns. The fabricated microwave absorber showed a small radar cross-section with reflectance less than − 10 dB in the frequency band range of 8.0–14.6 GHz.

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