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A Novel All-Digital Multichannel Multimode RF Transmitter Using Delta-Sigma Modulation

Silva, N.V.S. ; Oliveira, A. ; Gustavsson, U.G. ; Carvalho, N.B.C.

IEEE Microwave and Wireless Components Letters Vol. 22, Nº 3, pp. 156 - 158, March, 2012.

ISSN (print): 1531-1309
ISSN (online): 1531-1309

Journal Impact Factor: 1,703 (in 2014)

Digital Object Identifier: 10.1109/LMWC.2012.2184744

Abstract
In this letter, we present a new all-digital multichannel multimode transmitter architecture. The main novelty is the development of an agile radio transmitter where the digital up-conversion to RF operating in the gigahertz frequency range and the multichannel transmission capacity are embedded into a single Field-Programmable Gate Array (FPGA) device. Its high flexibility and fast switching of the carriers’ frequencies make this transmitter interesting for cognitive radio-based applications.