Title :
Design of a 3.5-GHz OOK CMOS transmitter with triangular pulse shaping
Author :
Kim, Hyun ; Kim, Jongsik ; Kim, Jinsup ; Chung, Hajoong ; Shin, Hyunchol
Author_Institution :
High-Speed Integrated Circuits & Syst. Lab., Kwangwoon Univ., Seoul, South Korea
Abstract :
A low-power CMOS on-off keying (OOK) transmitter employing a triangular pulse shaping scheme is presented. The proposed pulse shaping circuit is based on a current-reused common-source stage, whose gain is controlled by modulating the gate-source voltage in a triangular form. The triangular control signal is generated by an opamp-based integrator. The proposed pulse shaping scheme can effectively support variable data rate. A 3.5-GHz OOK transmitter circuit adopting the proposed pulse shaping scheme is designed in a 0.13 ¿m CMOS process. It successfully modulates digital data from 100 kbps to 10 Mbps and delivers an output power of +2.5 dBm. The total current consumption is 4.17 mA from a 1.2 V supply voltage, of which only 0.57 mA is dissipated at the transmitter core excluding the output buffer.
Keywords :
CMOS integrated circuits; amplitude shift keying; low-power electronics; operational amplifiers; pulse shaping; radio transmitters; OOK CMOS transmitter; current-reused common-source stage; digital data; frequency 3.5 GHz; gate-source voltage; low-power on-off keying transmitter; opamp based integrator; pulse shaping circuit; size 0.13 mum; triangular control signal; triangular pulse shaping; voltage 1.2 V; CMOS process; Circuits; Digital modulation; Power generation; Pulse modulation; Pulse shaping methods; Shape control; Signal generators; Transmitters; Voltage control; CMOS; OOK; pulse shaping; transmitter;
Conference_Titel :
SoC Design Conference (ISOCC), 2009 International
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5034-3
Electronic_ISBN :
978-1-4244-5035-0
DOI :
10.1109/SOCDC.2009.5423886