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1. WO2009012107 - ACTIVE LOAD ISOLATOR AND WIRELESS SPEAKER FOR MIXED SIGNAL ENVIRONMENTS

Publication Number WO/2009/012107
Publication Date 22.01.2009
International Application No. PCT/US2008/069614
International Filing Date 10.07.2008
Chapter 2 Demand Filed 24.02.2009
IPC
H04B 1/44 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
40Circuits
44Transmit/receive switching
CPC
H04B 15/02
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
15Suppression or limitation of noise or interference
02Reducing interference from electric apparatus by means located at or near the interfering apparatus
Applicants
  • AUDIOVOX CORPORATION [US]/[US] (AllExceptUS)
  • ANDERSEN, Jorgen [US]/[US] (UsOnly)
Inventors
  • ANDERSEN, Jorgen
Agents
  • NEWMAN, Robert, J.
Priority Data
11/778,81817.07.2007US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ACTIVE LOAD ISOLATOR AND WIRELESS SPEAKER FOR MIXED SIGNAL ENVIRONMENTS
(FR) ISOLATEUR DE CHARGES ACTIF ET HAUT-PARLEUR SANS-FIL POUR DES ENVIRONNEMENTS DE SIGNAUX MIXTES
Abstract
(EN)
An isolation circuit includes a low dropout operational current control loop and a shunt regulator. The current control loop is configured to drive the shunt regulator to result in a high dynamic impedance ratio between a voltage source and a load. The current control loop may include a series-pass transistor, a current sensing resistor, and a high side current sensor.
(FR)
L'invention concerne un circuit d'isolation comportant une boucle de commande de courant opérationnelle à faible perte de niveau et un régulateur de dérivation. La boucle de commande de courant est conçue pour piloter le régulateur de dérivation de manière à obtenir un rapport d'impédance dynamique élevé entre une source de tension et une charge. La boucle de commande de courant peut comporter un transistor de chute, une résistance de détection de courant et un détecteur de courant amont.
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