Title :
Digitally controlled 3GHz 360° phase modulator in an 1.2V 65nm CMOS technology
Author :
Thiel, Björn Thorsten ; Negra, Renato
Author_Institution :
UMIC Res. Centre, RWTH Aachen Univ., Aachen, Germany
Abstract :
This paper presents a phase modulator topology suitable for frequencies up to 3 GHz. The proposed phase modulator offers digital phase modulation for digital centric polar transmitter frontends as used e.g. in software defined radios. The achievable phase resolution is 11.2° which equals 10.4 ps at 3 GHz. The phase modulation is based on an delay lock loop (DLL), from which signals with different delays are forwarded by a multiplexer.
Keywords :
CMOS integrated circuits; delay lock loops; digital control; microwave devices; modulators; multiplexing equipment; phase modulation; transmitters; CMOS technology; delay lock loop; digital centric polar transmitter; digital control; digital phase modulation; frequency 3 GHz; multiplexer; phase modulator topology; size 65 nm; software defined radios; time 10.4 ps; voltage 1.2 V; CMOS integrated circuits; Delay; Logic gates; Multiplexing; Phase modulation; Signal resolution; Topology;
Conference_Titel :
Microwave Conference (GeMIC), 2011 German
Conference_Location :
Darmstadt
Print_ISBN :
978-1-4244-9225-1
Electronic_ISBN :
978-3-9812668-3-2
