TY - GEN
T1 - Quintic mixer
T2 - 2016 IEEE MTT-S International Microwave Symposium, IMS 2016
AU - Takano, Kyoya
AU - Hara, Shinsuke
AU - Katayama, Kosuke
AU - Amakawa, Shuhei
AU - Yoshida, Takeshi
AU - Fujishima, Minoru
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/8/9
Y1 - 2016/8/9
N2 - To realize a terahertz (THz) transmitter that supports complex digital modulation with a CMOS process having a sub-THz fmax, an unconventional triple-conversion transmitter architecture is introduced. Its first mixer is a quadrature modulator. The second mixer generates a second IF signal with two sidebands (up-converted signal and its image). The third mixer is the frequency quintupler-based, LO-less quintic mixer with an amplitude-distortion compensation filter. It up-converts the second IF signal to RF with high linearity using the two sidebands. No LO signal needs to be supplied, which simplifies the design of THz transmitter. A proof-of-concept experiment of the quantic mixer is demonstrated using a CMOS test chip with an on-chip IF receiver. A 16-QAM signal centered around 159 GHz is successfully generated from a modulated second IF signal at 31 GHz.
AB - To realize a terahertz (THz) transmitter that supports complex digital modulation with a CMOS process having a sub-THz fmax, an unconventional triple-conversion transmitter architecture is introduced. Its first mixer is a quadrature modulator. The second mixer generates a second IF signal with two sidebands (up-converted signal and its image). The third mixer is the frequency quintupler-based, LO-less quintic mixer with an amplitude-distortion compensation filter. It up-converts the second IF signal to RF with high linearity using the two sidebands. No LO signal needs to be supplied, which simplifies the design of THz transmitter. A proof-of-concept experiment of the quantic mixer is demonstrated using a CMOS test chip with an on-chip IF receiver. A 16-QAM signal centered around 159 GHz is successfully generated from a modulated second IF signal at 31 GHz.
KW - Complex digital modulation
KW - QAM
KW - THz transmitter
KW - frequency quintupler
KW - quintic mixer
UR - http://www.scopus.com/inward/record.url?scp=84985000710&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84985000710&partnerID=8YFLogxK
U2 - 10.1109/MWSYM.2016.7540420
DO - 10.1109/MWSYM.2016.7540420
M3 - Conference contribution
AN - SCOPUS:84985000710
T3 - IEEE MTT-S International Microwave Symposium Digest
BT - 2016 IEEE MTT-S International Microwave Symposium, IMS 2016
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 22 May 2016 through 27 May 2016
ER -