Title :
A new Doherty amplifier design approach
Author :
He, Tian ; Balaji, Uma
Author_Institution :
Dept. of ECE, California State Univ. Chico, Chico, CA, USA
Abstract :
The conventional Doherty amplifier requires the auxiliary device current to increase faster than the main as the input power increases. This has been accomplished by additional control circuitry, or uneven power drive, or periphery scaling. This paper presents a new Doherty design approach that accepts the insufficient auxiliary device current. It is shown that with this approach, comparable power back-off efficiency is achieved while linearity is maintained.
Keywords :
network synthesis; power amplifiers; Doherty amplifier design; auxiliary device current; input power; periphery scaling; power amplifiers; power back-off efficiency enhancement; uneven power drive; Circuits; Delay; Electron tubes; FETs; Helium; Linearity; Power amplifiers; Transfer functions; Virtual manufacturing; Voltage control; Doherty amplifier; efficiency enhancement; linearity; power added efficiency; power amplifiers;
Conference_Titel :
Wireless and Microwave Technology Conference (WAMICON), 2010 IEEE 11th Annual
Conference_Location :
Melbourne, FL
Print_ISBN :
978-1-4244-6688-7
DOI :
10.1109/WAMICON.2010.5461882
