Wireless digital communication device, and a pulse shaping netwo

Details Wireless digital communication device, and a pulse shaping netwo Wireless digital communication device, and a pulse shaping netwo

1996-07-18

1998-09-29

Chin, Stephen

Pulse or digital communications

Receivers

Interference or noise reduction

333 20, H04B 110

Patent

active

058155376

ABSTRACT:
A wireless digital communication device having a pulse shaping network for pulse shaping digital signals before modulation. The pulse shaping network comprises a shift register to which data to be modulated are fed. Outputs of the shift register are connected to control inputs of switched weighted current sources. The switched weighted current sources are summed over an output resistor. An adjustment voltage for adjusting the magnitude of the shaped data is fed to one input of a differential amplifier, a reference resistor being coupled to another input of the amplifier, and to a reference current source which is mirrored into the switched weighted current sources. Thus, an accurate and easily adjustable pulse shaping network is obtained.

REFERENCES:
patent: 3871767 (1975-03-01), Holm-Hansen et al.
patent: 4410955 (1983-10-01), Burke et al.
patent: 4585952 (1986-04-01), Yamamoto
patent: 4773001 (1988-09-01), Blair et al.
patent: 4871987 (1989-10-01), Kawase
patent: 5247657 (1993-09-01), Myers
patent: 5424881 (1995-06-01), Behrens et al.
patent: 5453767 (1995-09-01), Chang et al.
patent: 5651029 (1997-07-01), Yang et al.
patent: 5657353 (1997-08-01), Hatcher et al.
"Mobile Radio Communications", by R. Steele, Pentech Press, 1994, pp. 523-541.

Affiliated with

Also associated with

Rating

Wireless digital communication device, and a pulse shaping netwo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wireless digital communication device, and a pulse shaping netwo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wireless digital communication device, and a pulse shaping netwo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-693546