Satwik A. Patnaik

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—An analytical framework has been developed to describe the transient behavior of negative resistance injection-locked oscillators based on Adler's equation. Design insights are provided by using a combination of analytical simplifications and graphical interpretation. It has been shown that injection locking can be used to meet the requirements for fast(More)
—This paper presents a Wireless-USB/WiMedia-compliant fast-hopping frequency synthesizer architecture with quadrature outputs based on sub-harmonic injection-locking. The synthesizer features a cross-coupled quadrature digitally-controlled oscillator, that is injection-locked to a sub-harmonic frequency. An intuitive closed-form expression for the dynamics(More)
—This paper presents a fast-hopping frequency synthesizer architecture with quadrature outputs, based on sub-harmonic injection-locking, that is compliant with Wireless-USB/WiMedia specifications. The synthesizer features a cross-coupled quadrature digitally-controlled oscillator, that is injection locked to a sub-harmonic frequency. On-chip mixers have(More)
—A novel multi-frequency beamforming front-end is proposed. The proposed front-end allows for simultaneous and independent steering of multiple frequency beams. As proof of concept, an 8GHz 2-channel, 4-frequency phased array beam-former is designed and implemented in 65nm CMOS. The IF signal on each channel is frequency split using an all passive 4-point(More)
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