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Transmitter system with reconfigurable amplifier

A technology for amplifiers and transmitters, applied in the field of amplifier devices, transmitters and transmitter systems, and amplifiers, can solve problems such as high cost

Active Publication Date: 2017-07-11
ROHDE & SCHWARZ GMBH & CO KG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This results in high costs for saving the corresponding spare replacement

Method used

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  • Transmitter system with reconfigurable amplifier
  • Transmitter system with reconfigurable amplifier
  • Transmitter system with reconfigurable amplifier

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Embodiment Construction

[0034] First, refer to figure 1 , the general structure and function of an exemplary embodiment of a Doherty amplifier, a broadband amplifier, and especially an amplifier according to the invention will be explained. refer to figure 2 , showing the different frequency ranges for each amplifier. refer to image 3 , showing the structure and function of an exemplary embodiment of an amplifier device according to the present invention. based on Figure 4 to Figure 5 , explains an exemplary embodiment of the transmitter system according to the invention and the structure and function of the transmitter according to the invention. In some cases, descriptions and illustrations of the same elements in similar figures are not repeated.

[0035] figure 1 Amplifier 1 is shown. This includes a signal input 11 connected to a first input of a first coupler 10 . At the second input of the coupler 10 a load balancing resistor 13 is connected, and the load balancing resistor 13 is co...

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Abstract

The invention relates to an amplifier (1) having a coupler (18), a main amplifier (15) and an auxiliary amplifier (16). A main amplifier (15) and an auxiliary amplifier (16) are provided with at least a signal derived from the input signal and amplify said signal. A coupler (18) combines the output signals of the main amplifier (15) and the auxiliary amplifier (16). The main amplifier (15) and / or the auxiliary amplifier (16) have operating points which can be set during operation.

Description

technical field [0001] The invention relates to an amplifier, an amplifier device, a transmitter and a transmitter system. Background technique [0002] Conventionally, high-frequency power amplifiers are often operated in AB mode, that is, the base bias voltage is generated by a bias configuration, for example in the form of a series diode, even at low levels, the series diode drives Transistors for full output. In AB mode, small signals (as in A mode) as well as large signals (as in B mode) are amplified. Such amplifiers operate efficiently with exceptionally low distortion, but only if they operate with full level control close to compression. In the case of modern digital signals with strongly fluctuating envelopes, this is only the case for signal peaks that occur very rarely. Since the average level of these signals is controlled to be low, a relatively low average efficiency is obtained. Under proper size design, AB amplifiers with very wide bandwidths can be real...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03F1/02H03F3/24H03F3/60
CPCH03F1/0288H03F3/24H03F3/602H03F2200/111H03F2203/7209H03F2200/36H03F1/42H03F3/19H03F3/68H03F2200/451H04B1/02H04B2001/0408
Inventor 伯恩哈德·卡埃斯塞巴斯蒂安·斯坦普弗勒
Owner ROHDE & SCHWARZ GMBH & CO KG
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