Results 311 to 320 of about 1,684,562 (352)
Some of the next articles are maybe not open access.
1997
The conversion of low frequency noise into phase noise in a high frequency oscillator depends strongly on the active device type and operating conditions. Experimental setups are presented to achieve the best choice of a transistor to be used in low noise oscillators and to study the correlation between phase noise and low frequency noise.
O. Llopis +5 more
openaire +1 more source
The conversion of low frequency noise into phase noise in a high frequency oscillator depends strongly on the active device type and operating conditions. Experimental setups are presented to achieve the best choice of a transistor to be used in low noise oscillators and to study the correlation between phase noise and low frequency noise.
O. Llopis +5 more
openaire +1 more source
Physics in Technology, 1985
The idea of silencing noise by producing complementary 'negative waves' goes back over a hundred years. Highly sophisticated control systems are now helping to make the idea a reality, but many practical problems ...
J.E. Ffowcs Williams +2 more
openaire +1 more source
The idea of silencing noise by producing complementary 'negative waves' goes back over a hundred years. Highly sophisticated control systems are now helping to make the idea a reality, but many practical problems ...
J.E. Ffowcs Williams +2 more
openaire +1 more source
1998
A frequency synthesizer or signal source is expected to provide a pure spectral signal. There should be no unwanted amplitude or frequency/phase modulation in the output spectrum. As we will discuss shortly, undesired phase modulation on the local oscillator in communications receivers, can reduce the channel selectivity and degrade the bit error rate ...
openaire +1 more source
A frequency synthesizer or signal source is expected to provide a pure spectral signal. There should be no unwanted amplitude or frequency/phase modulation in the output spectrum. As we will discuss shortly, undesired phase modulation on the local oscillator in communications receivers, can reduce the channel selectivity and degrade the bit error rate ...
openaire +1 more source
Noise-Induced Phase Transitions
1999Phase transitions constitute one of the most interesting features exhibited by spatially extended systems. This chapter analyzes the effect of noise on phase transitions taking place between different steady states of a system. As we will see, noise can affect preexisting phase transitions, or even induce new ones.
Jordi García-Ojalvo, José M. Sancho
openaire +1 more source
Phase Noise measurement techniques
2011 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS 2011), 2011Low Phase Noise measurement is a demanding trend of the military and instrumentation market. To improve phase noise of components of a Radar or communication system, it is mandatory to improve also the measurement testers and techniques. This paper deals with techniques like phase lock loops, frequency discriminators, residual noise, AM noise, on CW or
openaire +1 more source
Phased array noise considerations
NTC '91 - National Telesystems Conference Proceedings, 2002Several concepts and formulae are presented that are useful in the examination of the signal-to-noise performance of phased array antennas with dissimilar signal paths or subarray sizes. It is demonstrated that, in most such cases, aperture illumination efficiency remains an accurate indication of array antenna noise performance. >
openaire +1 more source
Phase Noise Analysis of Clock Generator by Using Phase Noise Sensitivity
IEEE Transactions on Signal and Power Integrity, 2022Yuanzhuo Liu +8 more
openaire +1 more source
Phase transitions in 2D materials
Nature Reviews Materials, 2021Wenbin Li, Xiaofeng Qian, Ju Li
exaly
Planning for post‐pandemic cancer care delivery: Recovery or opportunity for redesign?
Ca-A Cancer Journal for Clinicians, 2021Pelin Cinar +2 more
exaly