Title:
RADIO RECEIVER
Document Type and Number:
WIPO Patent Application WO/2007/063745
Kind Code:
A1
Abstract:
A radio receiver including a reception processing system that uses a discrete-time frequency
conversion to acquire a signal having a sampling rate corresponding to a local
frequency, wherein the reception characteristic is improved when the reception
processing system is applied to a system having a wide reception channel band.
The radio receiver (100) comprises a discrete-time frequency converting part
(130) that uses a local frequency signal to sample a received signal in a discrete-time
manner, thereby performing a frequency conversion and a thinning process to
output a discrete-time analog signal of a sampling rate in accordance with the
local frequency; an A/D converting part (150) that quantizes the discrete-time
analog signal to a digital value to output a received digital signal; a channel
selection filtering part (161) that uses a tap coefficient value to perform a
digital filtering process of the received digital signal; and a frequency response
characteristic correcting part (162) that generates the tap coefficient in
accordance with the sampling rate.
Inventors:
ABE KATSUAKI
MATSUOKA AKIHIKO
MIYANO KENTARO
MATSUOKA AKIHIKO
MIYANO KENTARO
Application Number:
PCT/JP2006/323215
Publication Date:
June 07, 2007
Filing Date:
November 21, 2006
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
ABE KATSUAKI
MATSUOKA AKIHIKO
MIYANO KENTARO
ABE KATSUAKI
MATSUOKA AKIHIKO
MIYANO KENTARO
International Classes:
H04B1/26; H03D7/00; H03H17/02; H03H17/06; H04B1/10; H04B1/16
Foreign References:
| JP2003133909A | 2003-05-09 | |||
| JPH07254842A | 1995-10-03 | |||
| JP2005348414A | 2005-12-15 |
Other References:
See also references of EP 1947776A4
R.B. STASZEWSKI ET AL.: "All-Digital TX Frequency Synthesizer and Discrete time Receiver for Bluetooth Radio in 130n-nm CMOS", IEEE JOURNAL OF SOLID-STATE CIRCUITS, vol. 39, no. 12, December 2004 (2004-12-01), pages 2284 - 2287
R.B. STASZEWSKI ET AL.: "All-Digital TX Frequency Synthesizer and Discrete time Receiver for Bluetooth Radio in 130n-nm CMOS", IEEE JOURNAL OF SOLID-STATE CIRCUITS, vol. 39, no. 12, December 2004 (2004-12-01), pages 2284 - 2287
Attorney, Agent or Firm:
WASHIDA, Kimihito (Shintoshicenter Bldg. 24-1, Tsurumaki 1-chome, Tama-sh, Tokyo 34, JP)
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