EXCELLENT SENSITIVITY 64.8-GHz CMOS INJECTION-LOCKED FREQUENCY DIVIDER WITH 10.2-GHz LOCKING RANGE

A low-power and wide-locking-range 64 8-GHz injection-locked frequency-divider (ILFD) using standard 0 13 mu m CMOS technology of reported To enhance the locking range, a shunt inductor was introduced tit the source node of the cross-coupled transistor pair to maximize the equivalent load impedance of the tail transistor, i.e. to maximize the internal power, of over the frequency band of interest In addition, the inductors and capacitors of the LC-tank were implemented by low-Q micro-stripline inductors and high-Q varactors, respectively, to further improve the locking range of the ILFD The results shows that a wide locking-range of 10 2 GHz (from 54 6 GHz to 64 8 GHz (17%)), covering the 57-64-GHz ultra-wideband (UWB) set aside by FCC of USA. was achieved ILFD can be open cited at an input power of -60 dBm To the authors' knowledge, this is the be input sensitivity ever reported for a 60-GHz-band CMOS divider The power consumption of the ILFD was only 3 39 MW from a IV power supply The chip area was only 0 9 x 0 73 mm(2) excluding, the test pads (C) 2010 Wiley Periodicals, Inc Microwave Opt Technol Lett 52 518-523, 2010. Published online in Wiley InterScience (www.interscience.wiley.com) DOI 10.1002/mop.24970