Patent ID: 9748648
Date: 2017-08-29
CPC Classifications: H01Q

Claim:
1. A distributed feeding apparatus for antenna beamforming, comprising: a first distributed feeding circuit comprising a plurality P of inputs and a plurality N of outputs, the first distributed feeding circuit being configured for producing, when a signal is injected on one of the P inputs, a signal on each of the N outputs with a phase shift which is approximately constant between two adjacent outputs among the N outputs, at least one frequency multiplexer connected to at least one input of the said first circuit, a number, equal to the number N of outputs of the said first distributed feeding circuit, of frequency demultiplexers each connected in input, to an output of the said first distributed feeding circuit, and a second distributed feeding device comprising a plurality of inputs, each connected to an output of one of the said frequency demultiplexers, and a plurality of outputs, the said second distributed feeding device comprising: at least one second distributed feeding circuit comprising a plurality Q of inputs and a plurality M of outputs, the second distributed feeding circuit being configured for producing, when a signal is injected on one the Q inputs, a signal on each of the M outputs with a phase shift which is approximately constant between two adjacent outputs among the M outputs.