Wave beam forming network, input structure thereof, input/output method of wave beam forming network, and three-beam antenna
A beamforming and network technology, applied in the directions of antennas, antenna arrays, and individually powered antenna arrays.
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Embodiment 1
[0042] figure 1 A 3×4 Butler matrix network 100 is shown, including three input ports and four output ports, which are respectively the first input port IN1, the second input port IN2, the third input port IN3, the first output port OUT1, The second output port OUT2, the third output port OUT3 and the fourth output port OUT4.
[0043] figure 2 for figure 1 A schematic diagram of a specific example of the Butler matrix network shown. The Butler matrix network 100 includes a first directional coupler 11 , a second directional coupler 12 , a third directional coupler 13 , two phase shifters 21 , 22 and a power divider 3 . Wherein, each directional coupler has a first input end, a second input end, a first output end and a second output end, taking the first directional coupler 11 as an example, the first directional coupler 11 has its first Input end 11a, second input end 11b, first output end 11c and second output end 11d; Two described phase shifters 21,22 each have an inp...
Embodiment 2
[0067] image 3 A 3×5 Butler matrix network 100 is shown, which has three input ports and five output ports, and its structure is similar to that of Embodiment 1, except that two power dividers 3 are included, for the convenience of distinguishing , define one power splitter providing the third input port IN3 as the first power splitter 31 , and the other power splitter as the second power splitter 32 . As known above, the input terminal of the first power divider 31 is used as the third input port IN3, and its two output terminals are connected to the input terminals of the second and third directional couplers. The input terminal 32 of the second power divider 32 is connected to the first output terminal 12c of the second directional coupler 12, so as to divide the original first output port OUT1 into two output ports OUT1 and OUT5 for signal output, that is, in the original A fifth output port OUT5 is added on the basis of the four output ports.
[0068] In other embodime...
Embodiment 3
[0070] Figure 4 ~ Figure 6 A dual-polarized three-beam antenna 1000 is shown, including a reflector 400, four antenna subarrays 301, 302, 303, and 304 arranged on the reflector 400, and power-divided phase-shifting feeds consistent with the number of antenna subarrays. Electrical networks 201, 202, 203 and 204 (see Figure 5 and Figure 6 , because the structure of the power division phase-shifting feed network is the same, for the convenience of illustration, 202, 203, 204 are not completely drawn), and the two Butler matrix networks 100 and 100' in Embodiment 1.
[0071] In this embodiment, each antenna subarray includes six antenna radiating units, such as 301, including antenna radiating units 301b to 301g, and the six antenna radiating units are all dual-polarized antenna radiating units, and each radiating unit are all connected to the respective power division phase-shift feed network port (ie the output end of the power division phase-shift feed network), that is to...
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