Compact Load Network for GaN-HEMT Doherty Power Amplifier IC Using Left-Handed and Right-Handed Transmission Lines
- Authors
- Lee, H[Lee, Hwiseob]; Lim, W[Lim, Wonseob]; Lee, W[Lee, Wooseok]; Kang, H[Kang, Hyunuk]; Bae, J[Bae, Jongseok]; Park, CS[Park, Cheon-seok]; Hwang, KC[Hwang, Keum Cheol]; Lee, KY[Lee, Kang-Yoon]; Yang, Y[Yang, Youngoo]
- Issue Date
- Mar-2017
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Doherty power amplifier (DPA); gallium nitride high-electron-mobility transistor (GaN-HEMT); left-handed (LH) transmission line (TL); right-handed (RH) TL; small-cell base station
- Citation
- IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, v.27, no.3, pp.293 - 295
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
- Volume
- 27
- Number
- 3
- Start Page
- 293
- End Page
- 295
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/29958
- DOI
- 10.1109/LMWC.2017.2661706
- ISSN
- 1531-1309
- Abstract
- This letter presents a compact load network for Doherty power amplifier (DPA) integrated circuits (ICs) using p-type left-handed (LH) and right-handed (RH) transmission lines (TLs) based on lumped components. The quarter-wave impedance transformers based on the LH TLs and a compensation method for the internal shunt capacitance using a shunt inductor were adopted for the impedance matching networks. The p-type LH and RH TLs for the matching networks and a combining network can be further simplified by merging adjacent shunt components. In order to verify the proposed load network, a 2.6-GHz DPA IC was designed and fabricated using a 0.4-mu m gallium nitride high-electron-mobility transistor process for small-cell base stations. The overall size of the chip is 1.7 x 1.8 mm(2) and the chip was mounted on a quad flat no-leads package. For a long term evolution signal with a signal bandwidth of 10 MHz and a peak-to-average power ratio of 6.5 dB, a high drain efficiency of 52.2% was obtained at an average output power of 34.0 dBm.
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Collections - Information and Communication Engineering > School of Electronic and Electrical Engineering > 1. Journal Articles
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