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A Highly Efficient GaAs HBT MMIC Balanced Power Amplifier for W-CDMA Handset Applications
- Authors
- Kim, Unha; Kim, Junghyun; Kwon, Youngwoo
- Issue Date
- Oct-2009
- Publisher
- 한국전자통신연구원
- Keywords
- Balanced power amplifier; efficiency; MMIC; small form-factor; W-CDMA
- Citation
- ETRI JOURNAL, v.31, no.5, pp.598 - 600
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- ETRI JOURNAL
- Volume
- 31
- Number
- 5
- Start Page
- 598
- End Page
- 600
- ISSN
- 1225-6463
- Abstract
- A highly efficient and compactly integrated balanced power amplifier (PA) for W-CDMA handset applications is presented To overcome the size limit of a typical balanced PA, a bulky input divider is integrated into a PA MMIC, and a complex output network is replaced with simple lumped-element networks. For efficiency improvement at the low output power level, one of the two amplifiers in parallel is deactivated and the other is partially operated with corresponding load impedance optimization The implemented PA shows excellent average current consumption of 34.5 mA in urban and 56.3 mA in suburban environments, while exhibiting very good load-insensitivity under condition of VSWR=4:1.
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Related Researcher
- KIM, JUNG HYUN
- ERICA 공학대학 (SCHOOL OF ELECTRICAL ENGINEERING)