An ultra-wideband injection-locked frequency divider with a multi-order resonator and the passive injection-boosted technique

This paper presents an ultra-wideband injection-locked frequency divider (ILFD) design which is applicable to a multi-applications system. A transformer-based multi-order resonator utilized in the ILFD attain flat phase response. The passive injection-boosted technique proposed increase injection signal amplitude and thus widen locking range. With resonator, demonstrates measured range of 50GHz, covering 48GHz 98GHz. designed 40-nm process consumes DC power 11.2mW excluding buffers occupies core size 0.38×0.63mm2.