Multi-channel amplifier for use as e.g. transmission amplifiers in magnet resonance units, has adjusting unit assigned to amplification device, where marginal capacity for each output is dynamically adjustable

摘要

The multi-channel amplifier (1) has an amplification device (4), which comprises multiple amplifier channels (5) connected with inputs (2) and outputs (3). A channel capacity (PK) is maximally deliverable from each amplifier channel. The multi-channel amplifier supplied input signals (E) are amplifiable to output signals (A) by means of amplifier channels. An adjusting unit (6) is assigned to the amplification device. A marginal capacity (PG) for each output is dynamically adjustable, till the respective output signal is amplified. The marginal capacity for each output is maximally adjustable on a maximum value. The multi-channel amplifier is formed such that, from it, the sum of the marginal capacity of all outputs is always deliverable simultaneously, independent of the momentary adjustment of the marginal capacity. The sum of the marginal capacity is always smaller than the sum of the maximum values of all outputs. An independent claim is also included for a transmission arrangement for radio frequency signals, comprising a control unit.