Highly Efficient 5.15-to 5.85-GHz Neutralized HBT Power Amplifier for LTE Applications
- Title
- Highly Efficient 5.15-to 5.85-GHz Neutralized HBT Power Amplifier for LTE Applications
- Author
- 김정현
- Keywords
- Broadband; differential; HBT; licensed-assisted access (LAA); long-term evolution (LTE); neutralization; power amplifier (PA); transformer (TF)
- Issue Date
- 2018-03
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Citation
- IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, v. 28, No. 3, Page. 254-256
- Abstract
- A highly efficient fully integrated 5.15- to 5.85-GHz GaAs HBT differential power amplifier (PA) is implemented for long-term evolution (LTE) handset applications considering LTE licensed-assisted access. A simple and practical output network, based on an on-chip transformer, is proposed to achieve low loss. A neutralization technique to mitigate the parasitic base-collector capacitance is also adopted to improve PA performances. The implemented PA achieved a high gain of 26.6-28.1 dB and saturated power of 30.5-31.1 dBm with a high peak power-added efficiency of 40.4%-44.5% under a continuous-wave signal test across 5.15-5.85 GHz. When tested with 20- and 40-MHz bandwidth quadrature phase-shift keying LTE signals, the PA showed an adjacent channel leakage ratio of -33 dBc up to output powers of 24.1-24.4 and 22.2-22.8 dBm, respectively.
- URI
- https://ieeexplore.ieee.org/abstract/document/8277165https://repository.hanyang.ac.kr/handle/20.500.11754/80982
- ISSN
- 1531-1309
- DOI
- 10.1109/LMWC.2018.2795346
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ELECTRICAL ENGINEERING(전자공학부) > Articles
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