Title:
復調装置及び復調方法
Document Type and Number:
Japanese Patent JP4738604
Kind Code:
B2
Abstract:
The present invention relates to a demodulation structure and method for downconverting and demodulating a digitally modulated signal S0, with a local oscillator means (1; 5; 8) for providing a local oscillator signal Slo, a mixer means (2) for mixing said local oscillator signal Slo and said digitally modulated signal S0 in order to obtain a mixed signal, a lowpass filter means (3) for lowpass filtering the mixed signal from the mixer means (2) and an analog-to-digital converting means (4) for converting the filtered signal from the lowpass filter means (3) into a downconverted and demodulated digital signal S1, whereby the local oscillator signal is set in respect to the modulated digital signal so that the downconverted and demodulated digital signal output from the analog-to-digital converting means comprises two serially arranged information parts. The present invention provides a demodulation structure and method with a very simple structure and essentially improved amplitude and phase imbalances.
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Inventors:
Oberschmitt, Gerald
Brankovich, vezulin
Krupeshevich, Dragan
Conshack, Tino
Dore, Thomas
Brankovich, vezulin
Krupeshevich, Dragan
Conshack, Tino
Dore, Thomas
Application Number:
JP2001016208A
Publication Date:
August 03, 2011
Filing Date:
January 24, 2001
Export Citation:
Assignee:
Sony International (Europe) Gesellschaft Mitt Beschlenktel Haftung
International Classes:
H04L27/227; H03D3/00
Domestic Patent References:
| JP6205064A |
Foreign References:
| EP0411840A1 | ||||
| EP0458452A1 | ||||
| GB2324919A |
Attorney, Agent or Firm:
Miaki Kametani
Tetsuo Kanamoto
Koji Hagiwara
Tetsuo Kanamoto
Koji Hagiwara