Title :
System and Circuit Design for an MB-OFDM UWB Frequency Synthesizer
Author :
Mishra, Chinmaya ; Valdes-Garcia, Alberto ; Sánchez-Sinencio, Edgar ; Silva-Martinez, Jose
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas A&M Univ., College Station, TX, USA
fDate :
7/1/2009 12:00:00 AM
Abstract :
This paper presents a complete top-down design and experimental results for a fast-hopping 11-band 3-10-GHz frequency synthesizer. The system requirements for a synthesizer in an ultrawideband (UWB) radio are discussed. The synthesizer specifications for 480-Mb/s- and 1-Gb/s-data-rate multiband orthogonal-frequency-division-multiplexing UWB radios using quadrature phase shift keying and 16-quadrature amplitude modulation, respectively, are provided. The circuit-level implementation of this microwave system is described in detail including layout considerations. Fabricated in a 0.25-mum SiGe BiCMOS process and integrated in a receiver, the synthesizer was characterized in a quad-flat-no-leads package while being mounted on an FR-4 substrate. Measurement results and a model-hardware correlation analysis are presented.
Keywords :
BiCMOS integrated circuits; Ge-Si alloys; OFDM modulation; frequency synthesizers; quadrature amplitude modulation; quadrature phase shift keying; ultra wideband communication; BiCMOS process; MB-OFDM; SiGe; bit rate 1 Gbit/s; bit rate 480 Mbit/s; circuit design; circuit layout; circuit-level implementation; frequency 3 GHz to 10 GHz; frequency synthesizer; microwave system; multiband orthogonal-frequency-division-multiplexing; quad-flat-no-leads package; quadrature amplitude modulation; quadrature phase shift keying; receiver; size 0.25 mum; ultrawideband radio; Frequency synthesizer; SiGe; multiband orthogonal frequency-division multiplexing (MB-OFDM); system design; ultrawideband (UWB);
Journal_Title :
Circuits and Systems I: Regular Papers, IEEE Transactions on
DOI :
10.1109/TCSI.2008.2006640
