A V-Band Divide-by-Three Injection-Locked Frequency Divider in 28 nm CMOS
2012
In this letter, the 28 nm CMOS divide-by-three injection-locked frequency divider (ILFD) operating at the V band is presented for the first time. Based on a differential direct injection scheme, the proposed circuit can perform a division ratio of three while an enhanced locking range is achieved due to superior injection efficiency. From the measured results, the core circuit consumes a dc power of 8.8 mW from a 1 V supply voltage. At an incident power level of 0 dBm, the divider exhibits a locking range from 52.61 to 55.12 GHz. Within this frequency range, the output power and phase noise are kept around -5 dBm and -125 dBc/Hz at a 1 MHz offset, respectively.
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