Fully Integrated HBT MMIC Series-Type Extended Doherty Amplifier for W-CDMA Handset Applications
- Title
- Fully Integrated HBT MMIC Series-Type Extended Doherty Amplifier for W-CDMA Handset Applications
- Author
- 김정현
- Keywords
- Doherty amplifier; extended Doherty concept; integration; MMIC; predistorter; series-type Doherty amplifier
- Issue Date
- 2010-02
- Publisher
- WILEY
- Citation
- ETRI JOURNAL, v. 32, NO. 1, Page. 151-153
- Abstract
- A highly efficient linear and compactly integrated series-type Doherty power amplifier (PA) has been developed for wideband code-division multiple access handset applications. To overcome the size limit of a typical Doherty amplifier all circuit elements, such as matching circuits and impedance transformers, am fully integrated into a single monolithic microwave integrated circuit WC). The implemented PA shows a very low idle current of 25 mA and an excellent power added efficiency of 25.1% at an output power of 19 dBm by using an e-wended Doherty concept. Accordingly, its average current consumption was reduced by 51% and 41% in urban and suburban envinonments, respectively when compared with a class-AB PA. By adding a simple predistorter to the PA, the PA showed an adjacent channel leakage ratio better than -42 dBc over the whole output power range.
- URI
- https://onlinelibrary.wiley.com/doi/abs/10.4218/etrij.10.0209.0360https://repository.hanyang.ac.kr/handle/20.500.11754/183799
- ISSN
- 1225-6463;2233-7326
- DOI
- 10.4218/etrij.10.0209.0360
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ELECTRICAL ENGINEERING(전자공학부) > Articles
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