Time division multiple access FDD wireless unit and time divisio

Details Time division multiple access FDD wireless unit and time divisio Time division multiple access FDD wireless unit and time divisio

1996-05-15

1999-07-20

Hsu, Alpus H.

Multiplex communications

Duplex

Communication over free space

370281, 370347, H04B 156, H04J 400, H04L 514

Patent

active

059264667

ABSTRACT:
A time division multiple access FDD wireless unit has a first local oscillator 8 for oscillating a first frequency; a second local oscillator 12 for oscillating a second frequency; a n-times multiplier 14 for multiplying the second frequency by n; a m-times multiplier 18 for multiplying the second frequency by m; a converter 6 for transmitting frequency of difference between a reception signal and an output of the first local oscillator 8; a converter 11 for transmitting frequency of sum or difference between an output of the converter 6 and an output of the n-times multiplier 14; modulator 19 for modulating an output of the m-times multiplier 18; a converter 22 for transmitting frequency of sum of an output of the modulator 19 and the output of m-times multiplier 18.

REFERENCES:
patent: 4660002 (1987-04-01), Iijima et al.
patent: 5267233 (1993-11-01), Bauerschmidt
patent: 5475677 (1995-12-01), Arnold et al.
patent: 5590173 (1996-12-01), Beasley
"Digital Mobile Communication" by Shuji Kuwabara, Kagaku Shimbun-Sha, Kagaku Shinbunsha Co., Ltd., Sep. 1, 1992, pp. 62-69.
Proceedings of the European Microwave Conference, Folkets Hus, Sweden, Sep. 12-16, 1988, No. Conf. 18, Sep. 12, 1988, Microwave Exhibitions and Publishers Ltd., pp. 151-155, XP000185324 Gupta, R.K., et al.: "Modeling and Cad of an Ultra-Broadband Monolithic 5-Bit Digital Attenuator".
IEEE International Solid State Circuits Conference, vol. 37, Feb. 1, 1994, pp. 34-35, 305 XP000507050 Miyatsuji, K., et al.: "A GaAs High-Power RF Single-Pole Double-Throw Switch IC for Digital Mobile Communication System".
Patent Abstracts of Japan, vol. 015, No. 229 (E-1076), Jun. 11, 1991 & JP-A-03 066232 (Fujitsu Ltd.), Mar. 20, 1991.

Affiliated with

Also associated with

Rating

Time division multiple access FDD wireless unit and time divisio does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Time division multiple access FDD wireless unit and time divisio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time division multiple access FDD wireless unit and time divisio will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1328682