Low Voltage Current Mode Switched-Current-Mirror Mixer
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Date
2009-09
Authors
ORCID
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Společnost pro radioelektronické inženýrství
Abstract
A new CMOS active mixer topology can operate at 1 V supply voltage by use of SCM (switched currentmirror). Such current-mode mixer requires less voltage headroom with good linearization. Mixing is achieved with four improved current mirrors, which are alternatively activated. For ideal switching, the operation is equivalent to a conventional active mixer. This paper analyzes the performance of the SCM mixer, in comparison with the conventional mixer, demonstrating competitive performance at a lower supply voltage. Moreover, the new mixer’s die, without any passive components, is very small, and the conversion gain is easy to adjust. An experimental prototype was designed and simulated in standard chartered 0.18μm RF CMOS Process with Spectre in Cadence Design Systems. Experimental results show satisfactory mixer performance at 2.4 GHz.
Description
Citation
Radioengineering. 2009, vol. 18, č. 3, s. 295-299. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2009/09_03_295_299.pdf
http://www.radioeng.cz/fulltexts/2009/09_03_295_299.pdf
Document type
Peer-reviewed
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Published version
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Language of document
en