High-Efficiency Stacked Power Amplifier IC with 23% Fractional Bandwidth for Average Power Tracking Applicationopen access
- Authors
- Lee W.[Lee W.]; Lee K.-Y.[Lee K.-Y.]; Yang Y.[Yang Y.]; Kang H.[Kang H.]; Lee H.[Lee H.]; Bae J.[Bae J.]; Oh S.[Oh S.]; Oh H.[Oh H.]; Koo H.[Koo H.]; Yoon J.[Yoon J.]; Hwang K.C.[Hwang K.C.]
- Issue Date
- 2019
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- average power tracking; broadband PAIC; InGaP/GaAs HBT power amplifier integrated circuit; stacked PAIC
- Citation
- IEEE Access, v.7, pp.176658 - 176667
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE Access
- Volume
- 7
- Start Page
- 176658
- End Page
- 176667
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/11814
- DOI
- 10.1109/ACCESS.2019.2957608
- ISSN
- 2169-3536
- Abstract
- This paper presents a two-stage stacked power amplifier integrated circuit (PAIC) for broadband and high efficiency using a 2-$\mu\text{m}$ InGap/GaAs HBT process with a second-harmonic control circuit and a bias-switching circuit for an average power tracking (APT) application. For APT operation, active bias circuits with a bias switching circuit for the stacked stage were proposed. A simple L-section matching network with a second-harmonic termination circuit was adopted for broad bandwidth and high efficiency. The frequency-independent power and efficiency contours for fundamental and second-harmonic frequency band were extracted at the current-source plane of the transistor. The implemented two-stage PAIC was evaluated using a long-term evolution signal with a peak-to-average power ratio (PAPR) of 7.5 dB and a signal bandwidth of 10 MHz. From 1.55 to 1.95 GHz, the power amplifier exhibited average output power ranging from 27.4 to 28.5 dBm, a power gain of more than 28.6 dB, and a power-added efficiency (PAE) of 36.5 to 41.2% at an ACLR of-30 dBc. At an average output power back-off of 5 dB, the PAE improved to 29.5% with APT using an external buck-boost dc-dc converter, while it was 18.7% without APT. © 2013 IEEE.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - Information and Communication Engineering > School of Electronic and Electrical Engineering > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/11814)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.