CMOS Fractional-N Frequency Synthesizer for UHF RFID Reader Applications With Transformer-Based ISF Manipulation VCO. - Hyunki Jung; Kyung-Sik Choi; Keun-Mok Kim; Daehoon Jo; Jaeheon Lee; Jusung Kim; Jinho Ko; Sang-Gug Lee 001 (IEEE Trans. Circuits Syst. II Express Briefs, 2022)