Direct conversion delta-sigma transmitter
作者： Ronald M. Hickling
DOI:
关键词:
摘要: A flexible and programmable circuit for generating a radio frequency signal transmission includes two delta-sigma modulators (62,64), quadrature clock generator (70) signals (71, 73) having 90 degree phase difference, commutators (66, 68) multiplying the modulator outputs by +1 -1 on alternating half cycles of respectively, summer (80) summing commutated outputs, filter (82) removing unwanted components before transmission. The directly generates without need additional translation after commutation stage.
lens.org 参考文章(8)
Jean-Louis Dornstetter, Michel Alard, Method and apparatus for digital modulation using in-phase and quadrature components. ,(1990)
Ronald M. Hickling, Direct conversion delta-sigma receiver ,(2000)
Gabriele Gandolfi, Vittorio Colonna, Andrea Baschirotto, Randomizer for sigma-delta-type converter ,(2003)
Masanori Iida, Hiroyuki Asakura, Hisashi Adachi, Transmitting circuit apparatus ,(2001)
Ravi Subramanian, Programmable digital intermediate frequency transceiver ,(2000)
Lars Richard Birger Hellberg, Arrangements and methods for generating a radio frequency signal ,(1997)
Masanori Iida, Hiroyuki Asakura, Hisashi Adachi, Wireless quadrature modulator transmitter using E/O and O/E connectives ,(2001)
Luc Lussier, Mark Cloutier, Theodore Varelas, Christian Cojocaru, One bit digital quadrature vector modulator ,(1998)