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In a separate paper, the authors show that a nonlinear active core with a fourth-order resonator can generate two stable independent frequencies simultaneously. In this paper, the effect of injecting two frequencies into such a concurrent dual-frequency oscillator is analyzed and experimentally verified. It is shown that, for weak injection, the effect of(More)
The phase noise in synchronized concurrent dual-frequency oscillators is analyzed. Two cases are considered -synchronization to external injection sources and synchronization in array of coupled identical oscillators. For small injection strengths, the phase noise behavior of synchronized concurrent dual-frequency oscillators at either of the frequencies is(More)
A monolithic 100-Hz-6-GHz reconfigurable vector signal analyzer (VSA) and software-defined receiver (SDR), following a two-step up-down conversion heterodyne scheme with robustness to various wideband interference scenarios and local oscillator (LO) harmonic mixing, is presented. The 130-nm CMOS chip does not require external filters or baseband processing(More)
A dual-frequency oscillator employing a fourth-order tank is shown to have the ability to generate simultaneous oscillations at two frequencies. A nonlinear analysis to determine the steady-state and transient behavior of this oscillator is presented. Further, the phase-noise expression for the dual-frequency oscillator is derived and compared with that of(More)
A monolithic 50 MHz-6 GHz software-defined radio transceiver with two transmit (TX) and two receive (RX) channels to support 2 × 2 MIMO is implemented in 130nm CMOS. The transmitter's and receiver's frequency translation modes are reconfigurable to direct conversion or dual up-down conversion, featuring an on chip Q-enhanced 3 GHz 6-pole Chebyshev IF(More)
This paper reports a first attempt toward realization of a single-chip silicon-based broadband (BW<sub>-3dB</sub> &gt; 5 GHz) low-noise amplifier (LNA) with a noise figure (NF) of less than 1 dB across the band. A differential common-emitter amplifier with active feedback and neutralization capacitance is adopted without using passives at the input that(More)
This paper provides an overview of Resource Scheduling in Distributed System. Grid computing is an important and developing computing initiative that involves the aggregation of network connected computers to form a large-scale, distributed system for coordinated problem solving and resource scheduling. The primary concern associated with the grid computing(More)
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