Delta Sigma digitised polar transmitter with CMOS switching power amplifier

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A delta-sigma (Delta Sigma) digitised polar RF transmitter with a CMOS switching power amplifier is presented. The proposed power amplifier consists of a class-E amplifier with a modulating current source which allows high efficiency and high linearity. A current source is introduced in the proposed power amplifier to achieve Delta Sigma digitised amplitude modulation. The current mode amplitude modulation is suitable for a high speed modulated signal such as an oversampled Delta Sigma signal.
Publisher
INST ENGINEERING TECHNOLOGY-IET
Issue Date
2010-11
Language
English
Article Type
Article
Keywords

PA

Citation

ELECTRONICS LETTERS, v.46, no.23, pp.1551 - 1552

ISSN
0013-5194
DOI
10.1049/el.2010.2699
URI
http://hdl.handle.net/10203/93525
Appears in Collection
EE-Journal Papers(저널논문)
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