Results 171 to 180 of about 186,677 (204)
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On the numerical quadrature of highly-oscillating integrals II: Irregular oscillators
IMA Journal of Numerical Analysis, 2005The purpose of the present paper is to delve deeper into highly-oscillatory quadrature and to analyse the behaviour of the Filon quadrature for irregular oscillators of the form \[ I_g[f]:= \int^1_0 f(x) e^{i\omega g(x)}\,dx, \] where \(g\) is a real, nonzero function, \(f\) is a complex-valued function, both sufficiently smooth, and \(w\gg 1\).
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A 44 GHz Quadrature Traveling Wave Oscillator
2013 26th International Conference on VLSI Design and 2013 12th International Conference on Embedded Systems, 2013This paper presents a technique for quadrature phase generation in an LC oscillator by sharing a single turn inductor between a pair of oscillators. This special structure of the inductor cancels the magnetic flux within the loop, and thereby allows placement of other components beneath it.
Somnath Kundu, Shouri Chatterjee
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On Phase Noise in Quadrature Cross-Coupled Oscillators
2005 IEEE International Symposium on Circuits and Systems, 2005A cross-coupled relaxation oscillator has two outputs of the same frequency, which are in quadrature. In this paper a comparative study of the phase noise in a cross-coupled relaxation oscillator is given. We present a high level (system) study of the oscillator and analyse the oscillator stability.
Luís Bica Oliveira +3 more
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A Complementary-Coupled CMOS LC Quadrature Oscillator
IEICE Transactions on Electronics, 2008SUMMARY A novel CMOS LC quadrature oscillator (QO) whichadopts complementary-coupling circuitry has been proposed. The perfor-mance improvement in I/Q phase error and phase noise of the proposedQO, is explained in comparison with conventional QOs. The proposedQO is implemented in 0.18μm CMOS technology along with conventionalQOs. The measurement result
Yun, SJ Yun, Seok-Ju +2 more
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A 3.2-to-7.3GHz Quadrature Oscillator with Magnetic Tuning
2007 IEEE International Solid-State Circuits Conference. Digest of Technical Papers, 2007A quadrature oscillator employs a transformer-capacitor network as an energy tank. Frequency tuning is done by varying the transformer magnetic field via the ratio of currents in the two windings. Realized prototypes have a 3.2 to 7.3GHz frequency tuning range, a phase noise FOM of 176.5dB at 3.2GHz, 170.5dB at 6.4GHz, and 164dB at 7GHz, all calculated
Giuseppe Cusmai +3 more
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Quadrature generation techniques in CMOS relaxation oscillators
2012 IEEE International Symposium on Circuits and Systems, 2012Shunt and series-coupling techniques for quadrature generation are applied to CMOS relaxation oscillators. The 2.4GHz quadrature oscillators are designed and simulated in a UMC 0.18µm CMOS process. The shunt-coupled oscillator consumes a current of 12mA from a supply of 1.8V and achieves a phase noise of −99.4dBc/Hz @ 1MHz offset.
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Numerical Quadrature for Bessel Transformations with High Oscillations
2009We explore higher order numerical quadrature for the integration of systems containing Bessel functions such as $\int_a^b f(x)J_{\nu}(rx)dx$ and $\int_a^b f(x)\cos(r_1x)J_{\nu}(rx)dx$. The decay of the error of the these methods drastically improves as frequency grows.
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Two New Third-Order Quadrature Sinusoidal Oscillators
IETE Journal of Research, 2023Data Ram Bhaskar +2 more
exaly
Quadrature error of two-integrator oscillators
2014 IEEE 57th International Midwest Symposium on Circuits and Systems (MWSCAS), 2014João Casaleiro +2 more
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