US 11,658,686 B2
Control node with an octagonal vector constellation for an array antenna
Thierry Adam, Toulouse (FR); Stéphane Rochette, Toulouse (FR); and Benjamin Therond, Toulouse (FR)
Assigned to THALES, Courbevoie (FR)
Filed by THALES, Courbevoie (FR)
Filed on Jul. 29, 2021, as Appl. No. 17/388,049.
Claims priority of application No. 2008056 (FR), filed on Jul. 30, 2020.
Prior Publication US 2022/0038120 A1, Feb. 3, 2022
Int. Cl. H04B 1/00 (2006.01); H01Q 1/24 (2006.01); H04B 1/12 (2006.01); H04B 1/40 (2015.01); H04B 7/08 (2006.01)
CPC H04B 1/0039 (2013.01) [H01Q 1/246 (2013.01); H04B 1/123 (2013.01); H04B 1/40 (2013.01); H04B 7/084 (2013.01)] 8 Claims
OG exemplary drawing
1. A control node for an array antenna configured so as to apply an attenuation and a phase shift to a radiofrequency signal on the basis of a control signal, said control node comprising:
a quadratic divider that takes the radiofrequency signal at input and is configured so as to deliver at least one in-phase signal and one quadrature signal on separate transmission channels,
a combiner configured so as to generate an output radiofrequency signal by summing the signals transmitted on two of the transmission channels, each transmission channel comprising at least one attenuation cell configured so as to attenuate the radiofrequency signal transmitted on the channel by a predetermined value, each attenuation cell being activated on the basis of the value of a dedicated bit of the control signal, wherein each transmission channel furthermore comprises a first phase shift cell configured to apply a fixed phase shift to the radiofrequency signal transmitted on the channel, activated on the basis of the result of combinational logic implemented on bits of the control signal, the fixed phase shift applied by the first phase shift cells being a non-zero phase shift lower than 90° in terms of absolute value.