Abstract
This paper presents the design of a 60-GHz switched injection-locked oscillator (SILO). Furthermore, an analysis of the phase-sampling concept in SILO is performed, in order to be able to recognize phase-locked oscillations in the frequency domain. The SILO design is based on a cross-coupled oscillator topology to provide the positive feedback needed for creating the regenerative gain. The SILO has been fabricated in a 130-nm SiGe BiCMOS process. The pulsed oscillator consumes a dc power of 107 mW and sustains a maximum switching rate of 3.1 GHz, i.e. a relative switching rate of 5.17%, which is the highest reported. The SILO delivers a free-running output power of 7.3 dBm and reaches a maximum regenerative gain of 38 dB.
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