A MICROWAVE MINIATURIZED LINEARIZER USING A PARALLEL DIODE WITH A BIAS FEED RESISTANCE

Authors
YAMAUCHI K MORI K NAKAYAMA M MITSUI Y TAKAGI T
Citation
K. Yamauchi et al., A MICROWAVE MINIATURIZED LINEARIZER USING A PARALLEL DIODE WITH A BIAS FEED RESISTANCE, IEEE transactions on microwave theory and techniques, 45(12), 1997, pp. 2431-2435
Citations number
5
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
IEEE transactions on microwave theory and techniques → ACNP
ISSN journal
00189480
Volume
45
Issue
12
Year of publication
1997
Part
2
Pages
2431 - 2435
Database
ISI
SICI code
0018-9480(1997)45:12<2431:AMMLUA>2.0.ZU;2-U
Abstract
A miniaturized linearizer using a parallel diode with a bias feed resi stance has been proposed, The linearizer has positive gain and negativ e phase deviations and can be used as a linearizer for power amplifier s, These characteristics are provided by a nonlinearity of the diode a nd movement of bias point caused by a voltage drop at the bias feed re sistance, By applying this linearizer to an S-band power amplifier, im provement of adjacent channel leakage power of 5 dB and improvement of power-added efficiency of 8.5% have been achieved for the pi/4-shift QPSK modulated signal.