TY - GEN
T1 - A 5.2 GHz linearized SiGe quadrature modulator using current feedback from output buffer
AU - Onoma, Fumiki
AU - Tsutsumi, Koji
AU - Shinjo, Shintaro
AU - Suematsu, Noriharu
PY - 2007
Y1 - 2007
N2 - A linearized SiGe up-mixer using current feedback from output buffer is described. The up-mixer consists of a conventional Gilbert cell mixer, an output buffer and a current feedback circuit. According to the output envelope current of the output buffer, the bias current of the mixer is controlled by this feedback circuit. As a result, the proposed up-mixer can realize linearized performance. The simulated P1dB improvements of the proposed up-mixer and the quadrature modulator (QMOD) including this up-mixer are 3.3dB and 1.6dB compared with the conventional types, respectively. The fabricated 5.2 GHz SiGe QMOD achieves the P1dB of -13.9dBm.
AB - A linearized SiGe up-mixer using current feedback from output buffer is described. The up-mixer consists of a conventional Gilbert cell mixer, an output buffer and a current feedback circuit. According to the output envelope current of the output buffer, the bias current of the mixer is controlled by this feedback circuit. As a result, the proposed up-mixer can realize linearized performance. The simulated P1dB improvements of the proposed up-mixer and the quadrature modulator (QMOD) including this up-mixer are 3.3dB and 1.6dB compared with the conventional types, respectively. The fabricated 5.2 GHz SiGe QMOD achieves the P1dB of -13.9dBm.
KW - Microwave bipolar transistor
KW - Monolithic microwave integrated circuit (MMIC) up-mixer
KW - Silicon
UR - http://www.scopus.com/inward/record.url?scp=48149115815&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=48149115815&partnerID=8YFLogxK
U2 - 10.1109/KJMW.2007.4402237
DO - 10.1109/KJMW.2007.4402237
M3 - Conference contribution
AN - SCOPUS:48149115815
SN - 142441556X
SN - 9781424415564
T3 - 2007 Korea-Japan Microwave Conference, KJMW2007, Technical Digest 2007
SP - 49
EP - 52
BT - 2007 Korea-Japan Microwave Conference, KJMW2007, Technical Digest 2007
T2 - 2007 Korea-Japan MicroWave Conference, KJMW 2007
Y2 - 15 November 2007 through 16 November 2007
ER -