A Monolithic Linearizer Using an Even-Order-Distortion Controller for an S-Band High Power Amplifier

Takana KAHO  Hiroshi OKAZAKI  Tadao NAKAGAWA  Katsuhiko ARAKI  Kohji HORIKAWA  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E85-C   No.12   pp.1959-1966
Publication Date: 2002/12/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Low-Distortion,High-Power,High-Efficiency Active Device and Circuit Technology)
Category: 
Keyword: 
linearizer,  amplifier,  GaAs MMIC,  satellite communication,  

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Summary: 
An S-band linearizer was developed using GaAs MMIC technology. We call it the even-order-distortion-implemented intermodulation distortion controller (EODIC). EODIC uses even-order intermodulation distortion (IM) components in the second harmonic frequency band to control its IM components in the fundamental frequency band. EODIC is a suitable tool to compensate near-saturated high power amplifiers (HPAs). We developed an EODIC using MMIC technology. This paper describes the principle of EODIC and then introduces the EODIC MMIC in detail. This paper also presents the IM reduction performance of an EODIC in a near-saturated HPA.