Phase-shifting unit, antenna unit, phased array unit and phased array

An antenna unit, comprising:

• a phase-shifting unit and two antennas;
• wherein the phase-shifting unit comprises a common port, a switch, and two connection ports, wherein a transmission line between the two connection ports is provided with at least two branch ports, positions of the at least two branch ports on the transmission line are different, and a transmission line between every two adjacent branch ports of the at least two branch ports comprises a delay line;
• the switch is configured to switch to a target branch port of the at least two branch ports and establish a connection between the target branch port and the common port so that the common port is connected to the two connection ports to form two paths;
• and each path of the two paths is configured to establish a communication connection between a connection port corresponding to the each path and the common port to transmit a signal, and magnitude of phase shift between a phase of an input signal of each path and a phase of an output signal of the each path matches a delay line comprised in the each path;
• and
• wherein the two connection ports of the phase-shifting unit are connected to the two antennas in one-to-one correspondence.

A phased array unit, comprising:

• an antenna unit group and at least one phase-shifting unit group;
• wherein the antenna unit group is connected to the at least one phase-shifting unit group in series;
• wherein the antenna unit group comprises a plurality of antenna units, and each of the at least one phase-shifting unit group comprises at least one phase-shifting unit, wherein each antenna unit of the plurality of antenna units a phase-shifting unit and two antennas, and each phase-shifting unit of the at least one phase-shifting unit comprise a common port, a switch, and two connection ports, wherein a transmission line between the two connection ports is provided with at least two branch ports, positions of the at least two branch ports on the transmission line are different, and a transmission line between every two adjacent branch ports of the at least two branch ports comprises a delay line;
• the switch is configured to switch to a target branch port of the at least two branch ports and establish a connection between the target branch port and the common port so that the common port is connected to the two connection ports to form two paths;
• and each path of the two paths is configured to establish a communication connection between a connection port corresponding to the each path and the common port to transmit a signal, and magnitude of phase shift between a phase of an input signal of each path and a phase of an output signal of the each path matches a delay line comprised in the each path;
• wherein the two connection ports of the phase-shifting unit are connected to the two antennas in one-to-one correspondence;
• and
• wherein of two adjacent unit groups connected in series, a common port of each unit in one unit group is connected to a connection port of one unit in another unit group located after the one unit group;
• a first unit group in the phased array unit is the antenna unit group, and a last unit group in the phased array unit is one phase-shifting unit group of the at least one phase-shifting unit group;
• and a common port of each antenna unit in the antenna unit group is connected to a connection port of one phase-shifting unit in a phase-shifting unit group which is adjacent to and located after the antenna unit group and is connected to the antenna unit group in series.