Aliakbar Homayoun

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The phase noise of a ring oscillator can be obtained by multiplying its open-loop phase noise by a simple shaping function. The shaping function is computed using first principles and is applicable to both flicker-noise-induced and white-noise-induced phase noise, leading to compact equations for ring oscillators. It is also shown that flicker noise(More)
The phase noise of phase/frequency detectors can significantly raise the in-band phase noise of frequency synthesizers, corrupting the modulated signal. This paper analyzes the phase noisemechanisms in CMOS phase/frequency detectors and applies the results to two different topologies. It is shown that an octave increase in the input frequency raises the(More)
Mobile devices demand low-powerWiFi receivers for extended battery lifetime. This paper presents the design of an 11.6-mW receiver including baseband channel selection filtering that targets the IEEE802.11a standard. A 1-to-6 on-chip transformer serves as a low-noise amplifier with zero power dissipation and high linearity while providing ESD protection and(More)
A direct-conversion receiver employs a 1-to-6 transformer as a low-noise amplifier along with passive mixers and non-invasive baseband filters. Realized in 65-nm CMOS technology, the receiver provides an average noise figure of 5.3 dB and a sensitivity of -70 dBm at a data rate of 54 Mb/s. The prototype draws 11.6 mW from a 1-V supply and occupies an active(More)
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