Title:
ORTHOGONAL MIXER
Document Type and Number:
WIPO Patent Application WO/2011/004737
Kind Code:
A1
Abstract:
Disclosed is an orthogonal mixer which does not require a long time to adjust the amplitude value when demodulating an IQ signal. The orthogonal mixer is characterised by the inclusion of: a first frequency-changing unit (12), which outputs a sixth signal (MIXC_I), derived by inputting and multiplying a first signal (IN) with a second signal (CLKI) and a fourth signal (CLKIB); a second frequency-changing unit (13), which outputs a seventh signal (MIXC_Q), derived by inputting and multiplying the first signal with a third signal (CLKQ) and a fifth signal (CLKQB); a first amplitude adjustment unit (14), which inputs the sixth signal and the third signal and fifth signal and outputs an eighth signal (MIX_I); and a second amplitude adjustment unit (15), which inputs the seventh signal and the second signal and fourth signal and outputs a ninth signal (MIX_Q).
Inventors:
KITSUNEZUKA MASAKI (JP)
TOKAIRIN TAKASHI (JP)
TOKAIRIN TAKASHI (JP)
Application Number:
PCT/JP2010/061087
Publication Date:
January 13, 2011
Filing Date:
June 23, 2010
Export Citation:
Assignee:
NEC CORP (JP)
KITSUNEZUKA MASAKI (JP)
TOKAIRIN TAKASHI (JP)
KITSUNEZUKA MASAKI (JP)
TOKAIRIN TAKASHI (JP)
International Classes:
H03D7/14; H03D7/00; H03D7/12; H04B1/26; H04L27/227
Foreign References:
| JP2007535830A | 2007-12-06 | |||
| JP2006157866A | 2006-06-15 |
Other References:
MASAKI KITSUNEZUKA ET AL.: "A Widely-tunable, Reconfigurable CMOS Analog Baseband IC for Software Defined Radio", 2008 IEICE ELECTRONICS SOCIETY CONFERENCE KOEN RONBUNSHU 2, vol. 2, - 2 September 2008 (2008-09-02), pages 117
PETROV, A.R.: "System approach for low 1/f noise, high IP2 dynamic range CMOS mixer design", UNIVERSITY/GOVERNMENT/INDUSTRY MICROELECTRONICS SYMPOSIUM, 2003. PROCEEDINGS OF THE 15TH BIENNIAL, 30 June 2003 (2003-06-30) - 30 June 2003 (2003-06-30), pages 74 - 77, XP010655016, DOI: doi:10.1109/UGIM.2003.1225700
PETROV, A.R.: "System approach for low 1/f noise, high IP2 dynamic range CMOS mixer design", UNIVERSITY/GOVERNMENT/INDUSTRY MICROELECTRONICS SYMPOSIUM, 2003. PROCEEDINGS OF THE 15TH BIENNIAL, 30 June 2003 (2003-06-30) - 30 June 2003 (2003-06-30), pages 74 - 77, XP010655016, DOI: doi:10.1109/UGIM.2003.1225700
Attorney, Agent or Firm:
ASAI, TOSHIO (JP)
Toshio Asai (JP)
Toshio Asai (JP)
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