eprintid: 3534
rev_number: 8
eprint_status: archive
userid: 4
dir: disk0/00/00/35/34
datestamp: 2019-06-19 07:55:01
lastmod: 2019-06-19 07:55:01
status_changed: 2019-06-19 07:55:01
type: conference_item
metadata_visibility: show
creators_name: Nguyen, Duy P.
creators_name: Tran, Xuan Tu
creators_name: Nguyen, Nguyen L. K.
creators_name: Nguyen, Tan Phat
creators_name: Pham, Anh Vu
creators_id: dypnguyen@ucdavis.edu
creators_id: tutx@vnu.edu.vn
creators_id: pham@ece.ucdavis.edu
corp_creators: VNU-UET
corp_creators: UC Davis
title: High Gain High Efficiency Doherty Amplifiers with Optimized Driver Stages
ispublished: pub
subjects: ECE
subjects: ElectronicsandComputerEngineering
divisions: fac_fet
divisions: lab_sis
abstract: In this paper, we present two different approaches to design a driver for high gain Doherty power amplifiers (DPAs): single driver and dual-driver topologies. Detailed analysis and quantitative comparison between the two approaches are proposed. In particular, the single driver topology is preferred when the output Doherty stage has a reasonable gain. On the other hand, when the output stage has low gain, the dual driver approach is required to prevent significant efficiency reduction. Two DPA circuits at two different frequency ranges have been fabricated in a 0.15-μm Gallium Arsenide (GaAs) process to verify the concept. The single driver DPA at 10 GHz achieves at a measured gain of 19.2 dB and the maximum power of 27 dBm. The peak power added efficiency (PAE) and PAE at 6-dB power back-off (PBO) are 43% and 32%, respectively. On the other hand, the dual driver DPA at 28 GHz exhibits 15 dB of gain, 28.2 dBm output power with an associated peak PAE of 37%. To the best of the authors’ knowledge, our DPA prototypes achieve the highest gain of all reported DPAs at similar frequency ranges.
date: 2019-08-04
date_type: published
full_text_status: none
pres_type: paper
event_title: 2019 62nd IEEE International Midwest Symposium on Circuits and Systems (MWSCAS)
event_location: Dallas, Texas, USA
event_dates: 4-7 August 2019
event_type: conference
refereed: TRUE
citation:   Nguyen, Duy P. and Tran, Xuan Tu and Nguyen, Nguyen L. K. and Nguyen, Tan Phat and Pham, Anh Vu  (2019) High Gain High Efficiency Doherty Amplifiers with Optimized Driver Stages.  In: 2019 62nd IEEE International Midwest Symposium on Circuits and Systems (MWSCAS), 4-7 August 2019, Dallas, Texas, USA.