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/48149103738
U2 - 10.1109/EMICC.2007.4412705
DO - 10.1109/EMICC.2007.4412705
M3 - Conference paper
AN - SCOPUS:48149103738
SN - 2874870021
SN - 9782874870026
T3 - European Microwave Week 2007 Conference Proceedings, EuMW 2007 - 2nd European Microwave Integrated Circuits Conference, EuMIC 2007
SP - 287
EP - 290
BT - European Microwave Week 2007 Conference Proceedings, EuMW 2007 - 2nd European Microwave Integrated Circuits Conference, EuMIC 2007
T2 - European Microwave Week 2007, EuMW 2007 - 2nd European Microwave Integrated Circuits Conference, EuMIC 2007
Y2 - 8 October 2007 through 12 October 2007
ER -