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Patent Searching and Data


Title:
DIGITAL CONTROLLED MULTI STAGE SMART COMBINER
Document Type and Number:
WIPO Patent Application WO/2020/076172
Kind Code:
A3
Abstract:
Circuits and methods for use in amplifying amplitude and phase modulated signals. A circuit uses a digital controlled multi stage combiner, a signal phase discrete mapper and a combiner digital control circuit with N parallel signal feeding it. The signals resulting from N power amplifiers have phases with belonging to an alphabet with M discrete phases prior to being fed to the multi stage combiner. The phases of the N input signals are converted in an control signal generator into Ns sets of digital control signals to control N.M sets of switches where the signals are selected according the phase and sent to the corresponding combiner in the M possible combiners. Each one combiner from the set of M combiner then combines these signals. A second stage with digital controlled combiner, combines into two sub-sets of signals the signals resulting from first stage and the resulting outputs of the combiner are then combined by a third combining digital controlled stage into the output signal. The signal amplifiers employed before the combining stage may be Class Dor Class F amplifiers to provide high efficiency amplification of the signals.

Inventors:
DE ARAÚJO BORGES MONTEZUMA DE CARVALHO PAULO MIGUEL (PT)
HENRIQUES DIAS MORGADO DINIS RUI MIGUEL (PT)
ABREU DE OLIVEIRA JOÃO PEDRO (PT)
Application Number:
PCT/PT2019/000008
Publication Date:
July 23, 2020
Filing Date:
October 11, 2019
Export Citation:
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Assignee:
UNIV NOVA DE LISBOA (PT)
International Classes:
H03F1/02; G06F1/06; H03F3/21; H03F3/217; H03F3/24
Foreign References:
US5304943A1994-04-19
US20160164466A12016-06-09
US20130021104A12013-01-24
EP3306816A12018-04-11
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