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ARTICLES

Low Cost Signal Sources for Multi-band, Multi-mode Wireless Communication Systems

This article focuses on providing a cost-effective solution for multi-band, multi-mode wireless systems in which oscillators simultaneously satisfy the oscillation conditions of two or more signals, thereby obviating the need for several signal sources...
One of the critical building blocks in a multi-mode transceiver system is a multi-band VCO that is required for both up and down conversion. Mobile phones and radios, operating in several modes, are typically switching between receiving and transmitting frequencies, and therefore require low phase noise signal sources (oscillators/VCOs)...
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Minimization of Phase Noise in Scaled Device Coupled Mode RF Oscillators

This article describes the impact of device scaling on phase noise in coupled oscillators, which have recently emerged as strong contenders for radio frequency (RF) and mixed-signal applications.
As the frequency band for wireless communication shifts higher and higher, the generation of power efficient, low phase noise, broadband and configurable compact signal sources (oscillators) with low cost has become more and more challenging, due to the frequency limitations of the devices (transistors). The performance of communication systems...
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