A power amplification device comprises an amplifying unit and a combining unit. The amplifying unit is provided with a plurality of groups of amplifier circuits that amplifies the power of a radio frequency signal. The plurality of groups of amplifier circuits each includes a predetermined number of the amplifier circuits. The combining unit includes a plurality of combiners. The amplifying unit is housed by a first housing and the combining unit is housed by a second housing which is separate from the first housing. The amplifying unit is configured to be attachable to and detachable from the combining unit. The amplifying unit is configurable by one or more control voltages to perform amplification in classes AB, B and/or C. The amplification in classes AB, B, and/or C is compatible with a type of the combiner.

Redundancy architectures for communications systems are provided. An example redundancy architecture includes a plurality of active radio-frequency (RF) hardware units, one or more RF signal splitters configured to couple a plurality of RF input signals to the plurality of active RF hardware units, and one or more RF signal combiners configured to couple RF signals processed by the plurality of active RF hardware units to a plurality of RF output paths. The one or more RF signal splitters are configured to split each RF input signal of the plurality of RF input signals into multiple copies of the RF input signal, and to provide each copy of the multiple copies of the RF input signal to a different one of the plurality of active RF hardware units. The one or more RF signal combiners are configured to combine the multiple copies of the RF input signals into RF output signals.

A power amplification device capable of detaching an element relating to the power amplification of an RF signal from an element relating to the combining of RF signals. The amplifying unit 1 is provided with a plurality of groups of amplifier circuits 2 that amplifies the power of a RF signal and the plurality of groups of amplifier circuits each includes a predetermined number of the amplifier circuits 2. A combining unit 5 includes a first combiner 7 and a second combiner 8. The first combiner 7 is provided in association with the group of the amplifier circuits 2, combines RF signals output from the amplifier circuits 2 belonging to the corresponding group, and outputs the RF signal after combining. The second combiner 8 combines the RF signals output from each first combiner 7 and outputs the RF signal after combining. Each first combiner 7 is a combiner usable for an RF signal in a specific frequency band. The amplifying unit 1 is attachable to and detachable from the combining unit 5.

An amplifier arrangement has a plurality of function strings, which are required for nominal operation. In addition, the amplifier arrangement has a redundancy circuit and a redundant function string including a redundant converter and a redundant amplifier. If a function string is faulty, the redundancy circuit supplies the input signals of the faulty function string to the redundant function string. In addition, a high-frequency system with an inner housing and an outer housing is described, wherein an air gap separates the inner housing and the outer housing from one another so that high-frequency signals can be transmitted via the air gap between the inner housing and the outer housing.

A transmission and emission assembly for a multibeam antenna and a multibeam antenna are disclosed. In one aspect, the assembly includes a plurality of radiating elements forming a radiating surface, an emission distribution network arranged upstream from the radiating surface and including a plurality of emission ports, a receiving distribution network arranged upstream from the radiating surface and including a plurality of receiving ports, a plurality of low-noise amplifiers and a capability for interconnecting each receiving port to at least one low-noise amplifier. The emission distribution network and the receiving distribution network are separate from one another and are arranged in a same unit separate from the communication module. The receiving distribution network and the radiating elements are thermally separated.

Methods and systems consistent with the present invention provide an improved system that supervises the operation of a backup amplifier. The method comprises receiving an indication that a primary amplifier failed; determining a configuration of the primary amplifier; and configuring the backup amplifier to match the configuration of the primary amplifier.

A highly stable transformer, including a first transformer, a second transformer and a current induction device. The current induction device is provided in a load line of the first transformer for detecting an induction current in the load line of the first transformer. An induction load terminal of the current induction device is connected to a control winding. The control winding is provided in a winding of the second transformer to generate an induction voltage in the winding according to the induction current value and output a voltage value matching the load. The transformer has a zero voltage deviation, can be applied to precise appliance circuits and will not produce voltage drop. The transformer adopts active loaded lines, has good operation efficiency and good stability, saves main capacitor loss of no-load and unequal loads, and improves the startup performance of the transformer to any corresponding loads in a full-load condition.

A fault tolerant voltage regulator may include a plurality of operational transconductance amplifiers. The plurality of operational transconductance amplifiers may be configured according to a unity-gain configuration. The plurality of operational transconductance amplifiers may be configured to couple in parallel to a load. The plurality of operational transconductance amplifiers may be configured to load share a load current associated with the load approximately equally among the plurality of operational transconductance amplifiers.

The invention relates to a sound reinforcement system (400) comprising a loudspeaker (130) and two audio amplifiers (410, 410), wherein: each audio amplifier (410, 410) is equipped with an output relay (214), which extends to an amplifier output terminal (116) of the associated audio amplifier, as well as a ground output terminal (118); each of two terminals of the loudspeaker (130) is connected to one of the amplifier output terminals; the ground output terminals (118) of the two audio amplifiers (410, 410) are connected to one another and/or to ground. The invention also relates to a method for operating a sound reinforcement system (400) of said type.

An amplifier arrangement has a plurality of function strings, which are required for nominal operation. In addition, the amplifier arrangement has a redundancy circuit and a redundant function string including a redundant converter and a redundant amplifier. If a function string is faulty, the redundancy circuit supplies the input signals of the faulty function string to the redundant function string. In addition, a high-frequency system with an inner housing and an outer housing is described, wherein an air gap separates the inner housing and the outer housing from one another so that high-frequency signals can be transmitted via the air gap between the inner housing and the outer housing.