@inproceedings{9c326a1b008c46e9913fccea98a34d91,
title = "InGaP/GaAs HBT Broadband Power Amplifier IC with 54.3\% Fractional Bandwidth Based on Cascode Structure",
abstract = "This paper presents the development of a broadband two-stage cascode PAIC with a fractional bandwidth of 54.3\% using a 2- m InGaP/GaAs HBT process. The higher supply voltage of the cascode PA results in a lower current, which can be advantageous for broadband operation because of the lower impedance transformation ratio of the output matching network. According to bandwidth analysis based on the power and efficiency contours at the internal plane of the transistor, an optimized shunt inductor for a single L-section load matching network is proposed to increase the bandwidth of the cascode PA by compensating for the output capacitance. The proposed PAIC was designed and implemented for the frequency band from 1.55 to 2.65 GHz. Using an LTE signal with a PAPR of 7.5 dB and a signal bandwidth of 10 MHz, a power gain of more than 23.7 dB, PAE from 30.9 to 38.4\%, and average output power from 26.7 to 27.7 dBm were obtained at a given ACLR of -30 dBc.",
keywords = "broadband PA, cascode PA, InGaP/GaAs HBT PA, integrated circuit",
author = "Wooseok Lee and Hyunuk Kang and Hwiseob Lee and Wonseob Lim and Jongseok Bae and Hyungmo Koo and Jangsup Yoon and Youngoo Yang",
note = "Publisher Copyright: {\textcopyright} 2019 IEEE.; 2019 IEEE MTT-S International Microwave Symposium, IMS 2019 ; Conference date: 02-06-2019 Through 07-06-2019",
year = "2019",
month = jun,
doi = "10.1109/mwsym.2019.8700801",
language = "English",
series = "IEEE MTT-S International Microwave Symposium Digest",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "1299--1302",
booktitle = "2019 IEEE MTT-S International Microwave Symposium, IMS 2019",
}