Title:
無線周波数信号の調整可能な濾波装置
Document Type and Number:
Japanese Patent JP4027745
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a filter that can universally be available to data signals whose data rates differ from each other and supply a filtered output signal including a very small amount of digital noise and filtered at a different data rate at a base band signal. SOLUTION: This invention provides the filter in which a radio data signal is applied to two pre-filters (1; 2, 3) and a post-stage comparator (4). The comparator (4) is placed to a pre-stage of a glitch filter (5) that supplies the output signal of the filter and eliminates digital noise in the digital output signal from the comparator. The pre-filters (1; 2, 3) are designed to cope with the highest data transmission speed for the processing of the base band signal at a different bit rate, and the glitch filter can be adjusted to have a data rate caused actually, passes no signal pulse applied thereto to the output signal and the adjustable prescribed period of the glitch filter is selected to be a prescribed period adapted to a data rate of the radio data signal or below.
Inventors:
Stephan, De, Zieu
Frank, B
Frank, B
Application Number:
JP2002228173A
Publication Date:
December 26, 2007
Filing Date:
August 06, 2002
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
H04L27/00; H04B1/10; H04L25/03; H04L25/06
Domestic Patent References:
| JP6119608A | ||||
| JP5083094A | ||||
| JP1246915A | ||||
| JP6325309A | ||||
| JP2000252801A | ||||
| JP2003078397A |
Attorney, Agent or Firm:
Kenji Yoshitake
Hidetoshi Tachibana
Yasukazu Sato
Hiroshi Yoshimoto
Yasushi Kawasaki
Hidetoshi Tachibana
Yasukazu Sato
Hiroshi Yoshimoto
Yasushi Kawasaki