Title:
DISCRETE FILTER, SAMPLING MIXER, AND RADIO DEVICE
Document Type and Number:
WIPO Patent Application WO/2007/142341
Kind Code:
A1
Abstract:
Provided is a discrete filter capable of adjusting the number of notches and the
notch frequency and easily eliminating a particular frequency component. In
a sampling mixer (100), a control signal generation unit (104) generates a plurality
of control signals having the same frequency and different phases. A convolution
capacity unit (110) integrates the discrete signals obtained by sampling reception
signals by using convolution capacitors at a timing based on the control signals.
The signals integrated by the convolution capacitors are successively emitted
at the timing based on a control signal other than the control signals used for
the integration timing. Cb (15) integrates the emitted discrete signals. Thus,
by adjusting the number of the convolution capacitors arranged in parallel to
one another and the capacitance of each of the convolution capacitors, it is possible
to realize a sampling mixer capable of adjusting the number of notches and the
notch frequency and easily eliminating a particular frequency component.
Inventors:
HOSOKAWA YOSHIFUMI
ABE KATSUAKI
MIYANO KENTARO
ABE KATSUAKI
MIYANO KENTARO
Application Number:
PCT/JP2007/061671
Publication Date:
December 13, 2007
Filing Date:
June 08, 2007
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
HOSOKAWA YOSHIFUMI
ABE KATSUAKI
MIYANO KENTARO
HOSOKAWA YOSHIFUMI
ABE KATSUAKI
MIYANO KENTARO
International Classes:
H03H15/00; H03D7/00; H03H19/00; H04B1/26
Foreign References:
| JP2004289793A | 2004-10-14 | |||
| JPS5671324A | 1981-06-13 | |||
| JP2004289793A | 2004-10-14 | |||
| JP2006160280A | 2006-06-22 |
Other References:
See also references of EP 2031756A4
Attorney, Agent or Firm:
WASHIDA, Kimihito (Shintoshicenter Bldg. 24-1, Tsurumaki1-chome, Tama-sh, Tokyo 34, JP)
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