A design of K-band predistortion linearizer using reflective Schottky diode for satellite TWTAs

In this paper, a new predistortion method to reduce nonlinearity of a traveling wave tube amplifiers (TWTAs) is proposed. Nonlinear transfer characteristics of TWTA are analyzed using a carrier complex power series (CCPS). An inverse complex power series of a predistortion linearizer to linearize TW...

Full description

Saved in:
Bibliographic Details
Main Authors: Hee-Young Jeong, Sang-Keun Park, Nam-Sik Ryu, Yong-Chae Jeong, In-Bok Yom, Young Kim
Format: Conference Proceeding
Language:English
Subjects:
Circuits
Isolators
K-band
Nonlinear distortion
Phase distortion
Predistortion
Satellites
Schottky diodes
Signal generators
Voltage
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, a new predistortion method to reduce nonlinearity of a traveling wave tube amplifiers (TWTAs) is proposed. Nonlinear transfer characteristics of TWTA are analyzed using a carrier complex power series (CCPS). An inverse complex power series of a predistortion linearizer to linearize TWTA are also proposed. The inverse nonlinear distortion characteristics of predistorter can be realized with reflective structure that is composed of schottky diode and resistor-terminated transmission line. The AM-to-AM and the AM-to-PM characteristics of TWTA on K-band were improved from -5.8dB and -37.3/spl deg/ to 0.8dB and 6.7/spl deg/ by proposed predistortion linearizer, respectively.
DOI:10.1109/EUMC.2005.1610246