An analog linearizer using second harmonic signals feedforwarding

Kim, Sung Yong ; Jang, Mi Ae ; Jeon, Ki Kyung ; Kim, Young ; Jeong, Yong Chae (2005) An analog linearizer using second harmonic signals feedforwarding. In: Gallium Arsenide applications symposium. GAAS 2005, 3-7 ottobre 2005, Parigi.
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Abstract

In this paper, an analog linearizer using second harmonic signals feedforwarding is proposed. The harmonic generator of the proposed linearizer that consists of a small signal amplifier extracts second harmonic signals. A vector modulator, modulate fundamental signal with second harmonic signals, makes the inverse third order intermodulation distortion (IMD3) signals of power amplifier and controls amplitude/phase of them with modulation factors. As a result, this linearizer is suppressed IMD3 signals of power amplifier effectively. The test results show that IMD3 signals of power amplifier are suppressed more than 20dB for CW two-tone signals. Also, it’s improved the adjacent channel power ratio (ACPR) more than 7dB for CDMA (IS-95) signals.

Abstract
Document type
Conference or Workshop Item (Paper)
Creators
CreatorsAffiliationORCID
Kim, Sung Yong
Jang, Mi Ae
Jeon, Ki Kyung
Kim, Young
Jeong, Yong Chae
Subjects
DOI
Deposit date
15 Feb 2006
Last modified
17 Feb 2016 14:18
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