TY - GEN
T1 - High efficiency distributed amplifier using optimum transmission line
AU - Jeong, Sigyun
AU - Choi, Heungjae
AU - Jeong, Yongchae
AU - Kenney, J. Stevenson
AU - Kim, Chuldong
PY - 2007
Y1 - 2007
N2 - In this paper, we performed numerical analysis on reversed current of distributed amplifier (DA) based on transmission line theory and proposed optimum transmission line (OTL) to cancel reversed currents. This OTL has improved electrical performances of DA. The distributed amplifier using optimum transmission line (DAOTL) has been implemented with pHEMT transistor. Due to high capacitance of pHEMT, cutoff frequency is decided to 3.6GHz. As a result of measurement, we could obtain maximum gain of 14.5dB and minimum gain of 12.8dB inner operation band. Moreover, we could PAE of 25.6% which is higher about 7.6% than the conventional DA (CDA) at 3GHz. The output power was obtained 10.9dBm which is higher about 1.7dB than the conventional at 3GHz.
AB - In this paper, we performed numerical analysis on reversed current of distributed amplifier (DA) based on transmission line theory and proposed optimum transmission line (OTL) to cancel reversed currents. This OTL has improved electrical performances of DA. The distributed amplifier using optimum transmission line (DAOTL) has been implemented with pHEMT transistor. Due to high capacitance of pHEMT, cutoff frequency is decided to 3.6GHz. As a result of measurement, we could obtain maximum gain of 14.5dB and minimum gain of 12.8dB inner operation band. Moreover, we could PAE of 25.6% which is higher about 7.6% than the conventional DA (CDA) at 3GHz. The output power was obtained 10.9dBm which is higher about 1.7dB than the conventional at 3GHz.
UR - https://www.scopus.com/pages/publications/48149108253
U2 - 10.1109/ECWT.2007.4404023
DO - 10.1109/ECWT.2007.4404023
M3 - Conference paper
AN - SCOPUS:48149108253
SN - 287487003X
SN - 9782874870033
T3 - European Microwave Week 2007 Conference Proceedings, EuMW 2007 - 10th European Conference on Wireless Technology, ECWT 2007
SP - 367
EP - 370
BT - European Microwave Week 2007 Conference Proceedings, EUMIC 2007 - 10th European Conference on Wireless Technology, ECWT 2007
T2 - European Microwave Week 2007, EuMW 2007 - 10th European Conference on Wireless Technology, ECWT 2007
Y2 - 8 October 2007 through 10 October 2007
ER -