A PLL-type frequency synthesizer (10) in which a loop filter (24) state is recorded during an earlier hop to a given frequency then assigned back to the loop filter (24) during a subsequent hop to the same frequency is disclosed. The state is recorded through an A/D converter (48) and assigned through...http://www.google.de/patents/US6714085?utm_source=gb-gplus-sharePatent US6714085 - Prepositioned frequency synthesizer and method therefor
