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The Dynamic range (DR) of EA modulators It consists of an analog input X, a CT loopfilter H, a depends on the jitter characteristics of the applied clock.quantizer Q, a digital output Y, and a feedback DAC. If the This paper presents a method to calculate the maximum quantizer is modeled by a gain C and a noise source N, the allowed phase noise and spurious tones on the clock transfer function of the input signal X and quantization which can be applied to the EA modulator (SAM) noise N to the output can be calculated easily. Jitter on the preserving its DR. Equations are derived for four quantizer clock is not a problem because the jitter induced is different feedback DAC topologies used in a SAM . The shaped by the loop gain. The jitter on the DAC clock equations are verified by measurements. however, is directly at the input of the SAM, and will manifest itself at the output of the ADC, and consequently

This work presents an ultra low-power dutycycled wake-up radio system for high-data-rate, short-range millimeter-wave WPAN applications. The asynchronous dutycycled wake-up power management method is proposed and optimized to reduce the average power consumption. As the design example, a 60 GHz radio system is discussed, which consists of a 4-path phase-array transceiver, a duty-cycled wake-up receiver and the digital control circuits. Theoretical analyses of the optimum duty-cycle factor towards minimum average power are shown accordingly. Simulation results are given and a 230 µW average power consumption is achieved for the entire radio, which leads to about 4000-hour operation time for a 1.5-V 1000-mAh re-chargeable battery.

This article presents a 60 GHz low-power injection-locked oscillator in TSMC 65 om technology. By using the frequency sweeping technique, a simulated 7 GHz total locking range is achieved, which covers the entire 60 GHz ISM band. The simulated settling time is less than 2 ns for each sweeping step with ·60 dBm injection power. The DC power consumption is 1 mW of the oscillator core, and 5 mW in total for the input and output butTers, which are mainly used for the matching purpose.