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1. (WO1997018642) BI-DIRECTIONAL AMPLIFIERS AND SIGNAL CHANNELS FOR FREQUENCY DIVISION DUPLEX COMMUNICATIONS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/018642 International Application No.: PCT/CA1996/000744
Publication Date: 22.05.1997 International Filing Date: 13.11.1996
Chapter 2 Demand Filed: 14.05.1997
IPC:
H04B 3/38 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
3
Line transmission systems
02
Details
36
Repeater circuits
38
for signals in two different frequency ranges transmitted in opposite directions over the same transmission path
Applicants:
ALLEN TELECOM INC. [US/US]; 25101 Chagrin Boulevard Beachwood, OH 44122, US (AllExceptUS)
BEASLEY, Andrew, S. [CA/CA]; CA (UsOnly)
VANDENBRINK, Stephen [CA/CA]; CA (UsOnly)
Inventors:
BEASLEY, Andrew, S.; CA
VANDENBRINK, Stephen; CA
Agent:
LONG, Brian, M.; Long and Cameron 620-1100 Melville Street Vancouver, British Columbia V6E 4A6, CA
Priority Data:
006,68114.11.1995US
Title (EN) BI-DIRECTIONAL AMPLIFIERS AND SIGNAL CHANNELS FOR FREQUENCY DIVISION DUPLEX COMMUNICATIONS
(FR) AMPLIFICATEURS BIDIRECTIONNELS ET CANAUX DE SIGNAUX POUR COMMUNICATIONS EN DUPLEX A REPARTITION EN FREQUENCE
Abstract:
(EN) A bi-directional amplifier arrangement which may be used in an RF repeater in an FDD cordless telephone system repeater has signal paths connecting separate inputs (A, B) through a common amplifier (21). A frequency translator (19, 20) in one of the signal paths changes the frequency on one of the signal paths to counteract oscillation.
(FR) L'invention concerne un système d'amplificateur bidirectionnel qui peut être utilisé dans un répéteur haute fréquence, dans un système de téléphone sans fil pour communication en duplex à répartition en fréquence. Ce système comporte des trajectoires de signaux reliant des entrées séparées (A, B) par un amplificateur commun (21). Un traducteur de fréquences (19, 20) dans une des trajectoires de signaux modifie la fréquence sur l'une des trajectoires de signaux pour s'opposer aux oscillations.
Designated States: AL, AM, AT, AU, AZ, BB, BG, BR, BY, CA, CH, CN, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, US, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
AU1996074879