Kim, Hong-Teuk ; Lee, Ki-Hong ; Choi, Hyung-Kyu ; Choi, Ji-Youn ; Lee, Kyung-Hak ; Kim, Jin-Pil ; Ryu, Gi-Hyon ; Jeon, Yong-Joon ; Han, Choong-Soo ; Kim, Keechul ; Lee, Kyungho
(2004)
High Efficiency and Linear Dual Chain Power Amplifier without/with Automatic Bias Current Control for CDMA Handset Applications.
In: Gallium Arsenide applications symposium. GAAS 2004, 11—12 Ottobre, Amsterdam.
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Abstract
New architectures of the dual chain InGaP
MMIC power amplifiers without/with automatic bias
current control (ABC2) have been developed for
improving efficiency in the low-power region while
maintaining the high linearity for all Pout regions. For
low standby current less than 25 mA, the amplifiers
initially operate using small HBT arrays. For small
chip size, high load impedance in low-power region,
and efficient power combining in high-power region,
phase-compensating L-C matching circuits using lowpass
and high-pass networks are used. A new simple
power detection and bias current control circuit is
employed to the power amplifier, resulting in
automatic gain control for Pout variation. The
fabricated ABC2 power amplifier module shows good
ACPR more -48 dBc over all Pouts, and high efficiency
of 6 % PAE (conventional 3.5~4%) at Pout=9 dBm,
and 37.5 % PAE at Pout=28 dBm.
Abstract
New architectures of the dual chain InGaP
MMIC power amplifiers without/with automatic bias
current control (ABC2) have been developed for
improving efficiency in the low-power region while
maintaining the high linearity for all Pout regions. For
low standby current less than 25 mA, the amplifiers
initially operate using small HBT arrays. For small
chip size, high load impedance in low-power region,
and efficient power combining in high-power region,
phase-compensating L-C matching circuits using lowpass
and high-pass networks are used. A new simple
power detection and bias current control circuit is
employed to the power amplifier, resulting in
automatic gain control for Pout variation. The
fabricated ABC2 power amplifier module shows good
ACPR more -48 dBc over all Pouts, and high efficiency
of 6 % PAE (conventional 3.5~4%) at Pout=9 dBm,
and 37.5 % PAE at Pout=28 dBm.
Document type
Conference or Workshop Item
(Paper)
Creators
Subjects
DOI
Deposit date
16 Jun 2005
Last modified
17 Feb 2016 14:13
URI
Other metadata
Document type
Conference or Workshop Item
(Paper)
Creators
Subjects
DOI
Deposit date
16 Jun 2005
Last modified
17 Feb 2016 14:13
URI
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