Analysis and Design of a Multi-Core Oscillator for Ultra-Low Phase Noise

In this paper, we exploit an idea of coupling multiple oscillators to reduce phase noise (PN) to beyond the limit of what has been practically achievable so far in a bulk CMOS technology. We then apply it to demonstrate for the first time an RF oscillator that meets the most stringent PN requirements of cellular basestation receivers while...

Design of RF Oscillators for Wireless Digital Transmitters

Cost reduction is one of the main driving forces for integration. As such, advanced CMOS technologies offer excellent digital functionality and high-density integration capabilities. Properties that persuade designers to exploit new digitally assisted approaches rather than following conventional analogue techniques. Using these new concepts,...

Toward Solving Multichannel RF-SoC Integration Issues Through Digital Fractional Division

In modern RF system on chips (SoCs), the digital content consumes up to 85% of the IC chip area. The recent push to integrate multiple RF-SoC cores is met with heavy resistance by the remaining RF/analog circuitry, which creates numerous strong aggressors and weak victims leading to RF performance degradation. A key such mechanism is injection...