A DLL-based Injection-Locked Frequency Synthesizer for WiMedia UWB
2012 (English)In: 2012 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS 2012), IEEE , 2012, 2027-2030 p.Conference paper (Refereed)
A WiMedia ultrawideband (UWB) frequency synthesizer is designed for band group #1. A very fast hopping is achieved by using a delay-locked loop (DLL) architecture which utilizes a novel variable gain voltage-controlled delay line (VCDL) scheme to compensate the phase error generated at the hopping instant. Fast-settling DLL allows an injection-locked oscillator (ILO) to be employed to reduce the current consumption in the edge combiner (EC). Simulated in STM 65-nm CMOS technology, synthesizer hopping time is less than two reference cycles. Phase noise at 3432 MHz is -124 dBc/Hz at 1 MHz offset. The adjacent spur level from the Monte Carlo simulation is -34 dBc. Excluding CML divider, the synthesizer draws 6.7 mW from a 1.2 V supply.
Place, publisher, year, edition, pages
IEEE , 2012. 2027-2030 p.
, IEEE International Symposium on Cicuits and Systems, ISSN 0271-4302 ; 2012
Other Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:liu:diva-86342DOI: 10.1109/ISCAS.2012.6271678ISI: 000316903702060ISBN: 978-1-4673-0218-0 (print)ISBN: 978-1-4673-0219-7 (online)OAI: oai:DiVA.org:liu-86342DiVA: diva2:576615
IEEE International Symposium on Circuits and Systems (ISCAS 2012), 20-23 May 2012, Seoul, Korea (South)