Abstract
A new divide-by-2 injection locked frequency divider (ILFD) with dual-injection technique is proposed. The proposed ILFD is developed with divide-by-2 current mode logic (CML) divider, which is connected at the output of the ILFD to achieve constant output amplitude. Fabricated in 0.18-μm BiCMOS process, the proposed divide-by-2 ILFD with dual-injection improves the locking range through simultaneous optimization of loaded quality factor (Q L ) and oscillation current amplitude (i osc ) while consuming low power. The measured locking range of the proposed ILFD with dual-injection is 692 MHz between 7.512 GHz and 8.204 GHz, which is almost 10 times wider than that of a single-injection counterpart. The core of the ILFD with dual-injection only consumes 2.9 mA with 1.5-V supply.
Published Version
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