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Patent

Power combiner arrangement for microwave amplifiers

TLDR
In this article, an N-way non-hybrid power combiner arrangement for microwave amplifiers is described. But the present approach is different from the one described in this paper.
Abstract
The present invention relates to an N-way non-hybrid power combiner arrangement for microwave amplifiers. In operation, sensing means (19 1 , 19 2 , . . . , 19 N ) are coupled in a one-to-one relationship with the individual amplifiers (12 1 , 12 2 , . . . , 12 N ) to monitor amplifier performance and sense amplifier failure. In one embodiment of the present invention, shorting devices (20 1 , 20 2 , . . . , 20 N ) are disposed adjacent to the outputs of the individual amplifiers and coupled to the associated sensing means in a one-to-one relationship. In an alternative embodiment, open-circuiting devices (30 1 , 30 2 , . . . , 30 N ) are disposed at a predetermined distance from the amplifier outputs along the transmission lines (24 1 , 24 2 , . . . , 24 N ) and coupled to their respective sensing means. Upon identifying amplifier failure, the sensing means coupled to that particular amplifier activates either its associated short-circuiting or open-circuiting device, which in turn uncouples the failed amplifier and the transmission line associated therewith.

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Citations
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Power amplifier system having frequency and amplifier failure compensation

TL;DR: In this article, a power amplifier system for use in amplifying an RF input signal exhibiting a given operating frequency within a known rage of frequencies is described, which includes a signal modulator that receives and modifies the input signal and provides therefrom a modified first signal.
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Switchable N-way power divider/combiner

Duk Yong Kim, +1 more
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System and method for eliminating signal zero crossings in single and multiple channel communication systems

TL;DR: In this article, a system (90) and method for reducing or eliminating signal amplitudes near or crossing zero is disclosed, and methods employing a single carrier or multiple carriers and employing reduction of signal amplifyments near the point of crossing zero are also disclosed.
References
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Patent

Amplitude stabilized power amplifier

TL;DR: In this paper, an amplitude stabilized power amplifier has a power splitter for dividing the power of an input signal into a predetermined number of channels, a plurality of amplifier modules for amplifying the power, and a power combiner for combining the amplified power signals to provide an amplified output signal.
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TL;DR: In this paper, a parallel redundant RF power amplifier parallel redundant circuit employs three amplifiers, and the output from a comparator holds a 0°, 60° two-bit phase shifter in the 60° position.
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TL;DR: In this article, a microwave power divider is proposed that is a combination of an N-port junction circulator and a novel isolator-mismatch device for each circulator port other than one input port and divides microwave signal power incident to the input port into any desired ratio among the output ports.
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