Abrégé

An amplifier for controlling or reducing broadband noise is disclosed. An amplifier determines whether a useful signal is being amplified and controls the gain of the amplifier at least when useful signals are not being amplified to prevent or minimize the amplification of noise.

Classes IPC  ?

• H04B 1/10 - Dispositifs associés au récepteur pour limiter ou supprimer le bruit et les interférences

Abrégé

An amplifier for controlling or reducing broadband noise is disclosed. An amplifier determines whether a useful signal is being amplified and controls the gain of the amplifier at least when useful signals are not being amplified to prevent or minimize the amplification of noise.

Classes IPC  ?

• H04B 1/04 - Circuits
• H04B 1/10 - Dispositifs associés au récepteur pour limiter ou supprimer le bruit et les interférences
• H04W 88/08 - Dispositifs formant point d'accès

Abrégé

A method is provided for detecting and mitigating oscillation in an amplifier. The amplifier is configured to sample a signal being amplified to determine whether the amplifier is oscillating. In addition, the status of the amplifier can be verified based on the apparent signal levels of the signals being amplified. The gain of the amplifier is then adjusted in accordance with whether the amplifier is oscillating or as necessary to maintain gain that is compatible with the system within which the amplifier is operating.

Classes IPC  ?

• G05B 7/02 - Dispositions pour obtenir un embrayage ou un débrayage progressif d'une commande automatique électriques

Abrégé

A system and method for amplifying cellular signals while maintaining the output power of the amplifier below a prescribed power limit. The network amplifier system may include a variable gain module having an input configured to receive an uplink signal from a handset and configured to apply an amplification factor to the uplink signal to generate an adjusted uplink signal. A detector is used for detecting a level of the uplink signal. A gain control module is configured to control the amplification factor in order to limit the output of the variable gain module to ensure that the level of the adjusted uplink signal does not exceed a predetermined limit. An antenna is coupled to the output of the variable gain module and is configured to transmit the adjusted uplink signal to a base station.

Classes IPC  ?

• H04W 52/18 - Commande de puissance d'émission [TPC Transmission power control] le TPC étant effectué selon des paramètres spécifiques
• H04W 88/00 - Dispositifs spécialement adaptés aux réseaux de télécommunications sans fil, p. ex. terminaux, stations de base ou points d'accès
• H04W 88/08 - Dispositifs formant point d'accès

Abrégé

The present invention relates to a mobile device cradle, comprising one or more docking members for removably receiving a mobile device capable of sending and receiving communications via a communication network in the form of signals, a connection to an antenna capable of communicating signals to and from a base station of the communication network, and a means for communicating signals to and from the mobile device. In the preferred embodiment, the mobile device cradle is mounted inside a vehicle and is used to improve the signal between the mobile device and the communication network.

Classes IPC  ?

• H04B 7/15 - Systèmes relais actifs
• H04W 16/26 - Amplificateurs de cellules, p. ex. pour tunnels ou effet d'écran créé par des immeubles
• H04W 52/52 - Commande de puissance d'émission [TPC Transmission power control] utilisant des circuits ou des amplificateurs de commande automatique de gain [AGC Automatic Gain Control]
• H04W 88/02 - Dispositifs terminaux

Abrégé

An amplification circuit that enables a network amplifier to amplify multiple mobile telephone signals transmitted at different frequencies. The amplification circuit includes a first diplexer which receives a first signal having a first frequency band and a second signal having a second frequency band. The first diplexer generates a combined signal containing both the first and the second signals. The combined signal is amplified by a single low noise amplifier to generate an amplified combined signal. A second diplexer receives the amplified combined signal and separates the amplified combined signal into a first amplified signal having the first frequency band and a second amplified signal having the second frequency band. The resultant signals can then be transmitted by the network amplifier to a target destination, such as a handset or base station.

Classes IPC  ?

• H03F 3/16 - Amplificateurs comportant comme éléments d'amplification uniquement des tubes à décharge ou uniquement des dispositifs à semi-conducteurs comportant uniquement des dispositifs à semi-conducteurs avec dispositifs à effet de champ
• H03F 3/20 - Amplificateurs de puissance, p. ex. amplificateurs de classe B, amplificateur de classe C
• H03H 7/46 - Réseaux pour connecter plusieurs sources ou charges, fonctionnant sur des fréquences ou dans des bandes de fréquence différentes, à une charge ou à une source commune
• H04B 7/15 - Systèmes relais actifs
• H04W 52/52 - Commande de puissance d'émission [TPC Transmission power control] utilisant des circuits ou des amplificateurs de commande automatique de gain [AGC Automatic Gain Control]

Abrégé

A system and method for amplifying cellular signals and reducing interference introduced into a cellular network by the network amplifiers. The network amplifier includes an antenna configured to receive a downlink signal from a base station and a variable gain module for amplifying an uplink signal received from a handset. The variable gain module applies an amplification factor to the uplink signal to generate an adjusted uplink signal to be transmitted to the base station via the antenna. A processor is used for determining a value of the amplification factor, where the value of the amplification factor is a function of a level of the downlink signal. The amplification factor may be selected so that interference introduced into a cellular network by the transmission of the adjusted uplink signal is substantially eliminated.

Classes IPC  ?

• H04W 52/52 - Commande de puissance d'émission [TPC Transmission power control] utilisant des circuits ou des amplificateurs de commande automatique de gain [AGC Automatic Gain Control]

Abrégé

A system and method for optimal adjustment of gain of a network amplifier, and for substantially reducing oscillation produced by a network amplifier. The network amplifier includes first and second antennas for the transmission of signals between a handset and a base station. The signals are amplified by first and second variable gain modules by an amplification factor as determined by a control circuit. The control circuit determines the optimal value of the amplification factors by analyzing the signals. In the event that an oscillation is detected, the control circuit adjusts the amplification factors in a manner that substantially reduces the oscillation.

Classes IPC  ?

• H03G 3/20 - Commande automatique
• H04B 7/204 - Accès multiple
• H04W 16/26 - Amplificateurs de cellules, p. ex. pour tunnels ou effet d'écran créé par des immeubles

Abrégé

A system and method for substantially reducing oscillation produced by a network amplifier. An exemplary method includes receiving a cellular signal at a first antenna of a network amplifier and applying a first amplification factor to the cellular signal. The resultant amplified cellular signal is transmitted to a target destination via a second antenna. A first signal level of the cellular signal is measured while the first amplification factor is being applied to the cellular signal. Then, a second amplification factor that is less than the first amplification factor is applied to the cellular signal, during which a second signal level of the cellular signal is measured. If the second signal level is significantly less than the first signal level, the first amplification factor is reduced by a predetermined amount.

Classes IPC  ?

• H03F 1/00 - Détails des amplificateurs comportant comme éléments d'amplification uniquement des tubes à décharge, uniquement des dispositifs à semi-conducteurs ou uniquement des composants non spécifiés
• H03G 3/20 - Commande automatique
• H03G 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe