Title:
TRANSMITTING APPARATUS, COMMUNICATION DEVICE, AND MOBILE WIRELESS UNIT
Document Type and Number:
WIPO Patent Application WO/2006/101094
Kind Code:
A1
Abstract:
A transmitting apparatus capable of reducing the distortion of a vector modulated wave, which is a transmitted output, to a sufficiently low level. An amplifying part (105) generates, based on an amplitude component modulating signal and a phase modulated wave, a vector modulated wave. A synchronization demodulating part (107) detects the vector modulated wave to generate and send a synchronization demodulated signal to a band filtering part (108). The band filtering part (108) extracts a distortion frequency component signal from the synchronization demodulated signal outputted from the synchronization demodulating part (107). A control part (109) refers to the distortion component signal extracted by the band filtering part (108) and controls a delay time adjusting part (103) so as to reduce the level of the distortion component signal, thereby adjusting a delay time difference between the amplitude component modulating signal and the phase component modulating signal to reduce the distortion of the modulated wave.
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Inventors:
OKA TATSUTO
Application Number:
PCT/JP2006/305602
Publication Date:
September 28, 2006
Filing Date:
March 20, 2006
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
OKA TATSUTO
OKA TATSUTO
International Classes:
H04B1/04; H03F1/32; H03F3/20
Foreign References:
| JP2004356835A | 2004-12-16 | |||
| JP2004128933A | 2004-04-22 | |||
| US6366177B1 | 2002-04-02 |
Other References:
See also references of EP 1863183A4
Attorney, Agent or Firm:
Washida, Kimihito (Shintoshicenter Bldg. 24-1, Tsurumaki 1-chome, Tama-sh, Tokyo 34, JP)
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