منابع مشابه
Green radio despite "Dirty RF" front-end
In this article, we show that the non-ideal Radio-Frequency (RF) front-ends have to be corrected in order to contribute in a Green radio development. In fact, the effects of typical RF imperfections, like nonlinearities, carrier frequency offsets, and IQ imbalances, can be compensated for, when digital correction algorithms are applied. Such algorithms enable Green applications (e.g., Orthogona...
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This paper describes the design and measurement of a varactor-tuned planar diplexer for reconfigurable multi-mode/multi-standard transceiver front-end modules. The proposed diplexer of 3 cm × 1.8 cm is composed of two tunable dual-mode bandpass filters with two varactor diodes. The diplexer channels are 8.8% relative bandwidth at 2.48 and 3.2 GHz for 25 V biased voltage, while 7.5% and 4.1% are...
متن کاملDirty RF
Future wireless communications systems are expected to provide ever higher data rates. Still, devices have to be produced at reasonable cost in order to be affordable to customers. The widely known impairments – ”dirt effects” – in analog RF tend to aggravate as we go for the large transmission bandwidths and high carrier frequencies that usually come with an increased data throughput. To date,...
متن کامل2.1 Mobile RF Front End Integration
The mobile phone has become a big part of our daily lives, which has created an exponential growth in network data and an ever-increasing complex RF Front End to support this growth. This in turn has demanded more complex requirements for the filters, switches and power amplifiers (PA) in the front end. In order to address this increase in complexity, there has been a migration from discrete so...
متن کاملTutorial T8A: Realization of RF Front-End for a Cognitive Radio
The Cognitive Radio (CR) technology is a major step forward to address the critical challenge of “spectrum scarcity” in Wireless communications. It is a methodology to develop effective communication systems with the available radio resources and their constraints. This tutorial provides a comprehensive overview on realization of RF Front-End (RF FE) for a Cognitive Radio (CR). It begins with a...
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ژورنال
عنوان ژورنال: EURASIP Journal on Wireless Communications and Networking
سال: 2012
ISSN: 1687-1499
DOI: 10.1186/1687-1499-2012-146