Title :
Bandwidth Extension Of A Conventional Distributed Amplifier
Author :
Virdee, Bal S. ; Yazgi, Metin ; Virdee, Avtar
Author_Institution :
Dept. of Comput., London Metropolitan Univ., London
Abstract :
This paper presents a unique technique for significantly improving the bandwidth of a conventional distributed amplifier (CDA) using negative resistance. It is demonstrated that by making the gate-line of the CDA configuration negative resistance, the amplifiers operational bandwidth is improved by 14% without compromising its gain performance. In this case the 4-stage CDA was implemented using packaged pseudomorphic HJ-FET devices. The simplicity of the proposed technique makes it amenable to MMIC technology.
Keywords :
MMIC; distributed amplifiers; field effect transistors; negative resistance; HJ-FET; MMIC; bandwidth extension; conventional distributed amplifier; negative resistance; Attenuation; Bandwidth; Broadband amplifiers; Cutoff frequency; Degradation; Distributed amplifiers; Distributed parameter circuits; Equivalent circuits; FETs; Performance gain; Microwave amplifiers; broadband amplifiers; distributed amplifiers;
Conference_Titel :
Microwave Conference, 2007. APMC 2007. Asia-Pacific
Conference_Location :
Bangkok
Print_ISBN :
978-1-4244-0748-4
Electronic_ISBN :
978-1-4244-0749-1
DOI :
10.1109/APMC.2007.4554667
