Title :
A 60-GHz CMOS direct-conversion transmitter with injection-locking I/Q calibration
Author :
Kondo, Satoshi ; Yamaguchi, Toru ; Tsukui, Y. ; Minami, Ryutaro ; Takeuchi, Yoshio ; Musa, Afiqah ; Okada, Kenichi ; Matsuzawa, Akira
Author_Institution :
Tokyo Inst. of Technol., Tokyo, Japan
Abstract :
This paper proposes a 60-GHz direct-conversion transmitter using an injection-locking I/Q calibration. The 65-nm CMOS transmitter consists of a 5-stage PA, differential VGAs, up-conversion Gilbert-cell mixers, 60GHz quadrature injection-locked oscillators, baseband amplifiers, and 20GHz PLL. The measured sideband rejection ratio is 56 dB by using the proposed calibration technique. The transmitter consumes 240mW from a 1.2-V supply, and can transmit 7 Gb/s in 16QAM.
Keywords :
CMOS integrated circuits; calibration; injection locked oscillators; millimetre wave mixers; millimetre wave power amplifiers; phase locked loops; radio transmitters; 16QAM; CMOS transmitter; PA; PLL; baseband amplifiers; bit rate 7 Gbit/s; differential VGA; direct-conversion transmitter; frequency 20 GHz; frequency 60 GHz; injection-locking I-Q calibration; power 240 mW; quadrature injection-locked oscillators; upconversion Gilbert-cell mixers; voltage 1.2 V; CMOS integrated circuits; Calibration; Mixers; Phase locked loops; Radio frequency; Transceivers; Transmitters; 60GHz; CMOS; calibration; direct conversion; injection-locked oscillator; millimeter wave; transmitters;
Conference_Titel :
Microwave Integrated Circuits Conference (EuMIC), 2013 European
Conference_Location :
Nuremberg
