High Efficiency and Linear Dual Chain Power Amplifier without/with Automatic Bias Current Control for CDMA Handset Applications

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
Document type
Conference or Workshop Item (Paper)
Creators
CreatorsAffiliationORCID
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
Subjects
DOI
Deposit date
16 Jun 2005
Last modified
17 Feb 2016 14:13
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