4*8 beam forming network with Chebyshev amplitude distribution

Abstract

The invention discloses a 4 * 8 beam forming network with Chebyshev amplitude distribution. The 4 * 8 beam forming network comprises a power division switch control circuit, a first 4 * 4 beam forming network, a second 4 * 4 beam forming network and the like, two 4 * 4 wave beam forming networks are connected together by adopting a power division switch control circuit, so that four different wave beams are obtained; by adopting the three / four-branch directional couplers with different coupling degrees, the Chebyshev amplitude distribution and good impedance matching performance of the 4 * 8 beam forming network in a frequency band range are realized; through the phase shifters, an in-band flat phase curve is realized.

Description

Technical Field

[0001] The invention relates to the field of microwave antennas, and in particular to a 4×8 beamforming network with Chebyshev amplitude distribution. Background Art

[0002] The deployment of the fifth generation (5G) wireless and communication systems is accelerating around the world, and in many parts of the world, the race for the sixth generation (6G) technology has officially begun. 5G has the characteristics of high speed, low latency, large capacity, high reliability and security, and 6G is expected to provide greater coverage and significantly reduce costs and energy consumption. The core of 5G and beyond 5G systems is the multi-beam antenna array, which can achieve good connectivity and high spectral efficiency. The beamforming network is an important part of the multi-beam antenna array. The most important function of the beamforming network is to provide different power and phase distributions on the antenna, so as to achieve the control of the directionality of the beam and form a multi-beam antenna. The Butler matrix, Blass matrix and Nolen matrix are more commonly used in beamforming networks. The Butler matrix has the advantages of convenience, simplicity and low loss, and has been widely used in beamforming networks. However, the Butler matrix can only realize the number of input and output ports that is an integer power of 2, and as the number of ports increases, the complexity of the Butler matrix will also increase greatly, so the common Butler matrices are only 4×4 and 8×8. In order to simplify the structure of the Butler matrix, the Blass matrix and Nolen matrix were proposed, which can realize any number of input and output ports. The Blass matrix is ​​mainly composed of a coupler, a phase shifter, and a load end, and has the same input and output ports as the Butler matrix. The Nolen matrix was proposed based on the Blass matrix. Compared with the Butler matrix, the Nolen matrix reduces the use of cross junctions in structure, making the entire circuit structure simpler. However, since the Nolen matrix is ​​a series network, the bandwidth is usually narrow, especially the phase bandwidth.

[0003] Whether it is the Butler matrix, the Blass matrix, or the Nolen matrix, they all show equal power distribution at the output port, resulting in large side lobes when connected to the antenna. Generally, the side lobe level is less than 15dB. In order to reduce the side lobes, a beamforming network with Chebyshev amplitude distribution is required. At present, a beamforming network with equal power distribution has been proposed, but there are few studies on beamforming networks with unequal power distribution. Therefore, a 4×8 beamforming network with Chebyshev amplitude distribution is proposed. Summary of the invention

[0004] According to the problems existing in the prior art, the present invention discloses a 4×8 beamforming network with Chebyshev amplitude distribution, comprising: a power division switch control circuit, a first 4×4 beamforming network, a second 4×4 beamforming network, an input port and an output port;

[0005] The power division switch control circuit includes a first power division circuit, a second power division circuit, a third power division circuit, a fourth power division circuit, a fifth power division circuit, a sixth power division circuit, a seventh power division circuit, a first switch control circuit, a second switch control circuit, a third switch control circuit, a fourth switch control circuit, a fifth switch control circuit, a sixth switch control circuit, a seventh switch control circuit, an eighth switch control circuit, a first meandering line phase shifter, a second meandering line phase shifter, a third meandering line phase shifter, a fourth meandering line phase shifter, a fifth meandering line phase shifter, a sixth meandering line phase shifter, a seventh meandering line phase shifter, and an eighth meandering line phase shifter;

[0006] The first power division circuit includes a first transmission microstrip line, a second transmission microstrip line, a third transmission microstrip line, a fourth transmission microstrip line, a first patch capacitor, and a first patch resistor; the second power division circuit, the third power division circuit, the fourth power division circuit, the fifth power division circuit, the sixth power division circuit, the seventh power division circuit and the first power division circuit are all composed of transmission lines, patch capacitors and patch resistors;

[0007] The first switch control circuit includes a first transmission microstrip line, a second transmission microstrip line, a third transmission microstrip line, a fourth transmission microstrip line, a first chip resistor, a second chip resistor, a third chip resistor, a fourth chip resistor, a first chip capacitor, a second chip capacitor, a first short-circuit pin, a second short-circuit pin, a third short-circuit pin, a first welding pad, and a first switch diode; the second switch control circuit, the third switch control circuit, the fourth switch control circuit, the fifth switch control circuit, the sixth switch control circuit, the seventh switch control circuit, and the eighth switch control circuit have the same structure as the first switch control circuit;

[0008] The first 4×4 beamforming network includes a first phase shifter, a second phase shifter, a third phase shifter, a fourth phase shifter, a fifth phase shifter, a sixth phase shifter, a seventh phase shifter, an eighth phase shifter, a ninth phase shifter, a tenth phase shifter, an eleventh phase shifter, a twelfth phase shifter, a thirteenth phase shifter, a fourteenth phase shifter, a fifteenth phase shifter, a sixteenth phase shifter, a seventeenth phase shifter, an eighteenth phase shifter, a nineteenth phase shifter, a first four-branch directional coupler, a second four-branch directional coupler, a third four-branch directional coupler, a fourth four-branch directional coupler, a fifth four-branch directional coupler, a sixth four-branch directional coupler, a seventh four-branch directional coupler, an eighth four-branch directional coupler, a ninth four-branch directional coupler, a fourteenth branch directional coupler, an eleventh four-branch directional coupler, a twelfth four-branch directional coupler, a first three-branch directional coupler, a second three-branch directional coupler, a third three-branch directional coupler, and a fourth three-branch directional coupler;

[0009] The coupling degrees of the first four-branch directional coupler, the fourth four-branch directional coupler, the seventh four-branch directional coupler, the fourteenth four-branch directional coupler, the second four-branch directional coupler, the fifth four-branch directional coupler, the eighth four-branch directional coupler, the eleventh four-branch directional coupler, the third four-branch directional coupler, the sixth four-branch directional coupler, the ninth four-branch directional coupler, and the twelfth four-branch directional coupler are arranged from small to large; the coupling degrees of the first three-branch directional coupler, the second three-branch directional coupler, the third three-branch directional coupler, and the fourth three-branch directional coupler are arranged from small to large;

[0010] The structure of the second 4×4 beamforming network is a mirror image of the first 4×4 beamforming network, with the same components but different structural parameters.

[0011] The input port includes a first input port; the output port includes a first output port, a second output port, a third output port, a fourth output port, a fifth output port, a sixth output port, a seventh output port, and an eighth output port;

[0012] The first input port is connected to the left end of the first power division circuit of the power division switch control circuit; the upper right end of the first power division circuit is connected to the left end of the second power division circuit; the lower right end of the first power division circuit is connected to the left end of the third power division circuit; the upper right end of the second power division circuit is connected to the left end of the fourth power division circuit; the lower right end of the second power division circuit is connected to the left end of the fifth power division circuit; the upper right end of the third power division circuit is connected to the left end of the sixth power division circuit; the lower right end of the third power division circuit is connected to the left end of the seventh power division circuit. The left end of the fourth power division circuit is connected; the upper right end of the fourth power division circuit is connected to the left end of the first switch control circuit; the lower right end of the fourth power division circuit is connected to the left end of the second switch control circuit; the upper right end of the fifth power division circuit is connected to the left end of the third switch control circuit; the lower right end of the fifth power division circuit is connected to the left end of the fourth switch control circuit; the upper right end of the sixth power division circuit is connected to the left end of the fifth switch control circuit; the lower right end of the sixth power division circuit is connected to the left end of the sixth switch control circuit; the seventh power division circuit The upper right end of the seventh switch control circuit is connected to the left end of the seventh power division circuit; the lower right end of the seventh power division circuit is connected to the left end of the eighth switch control circuit; the right end of the first switch control circuit is connected to the left end of the first meandering line phase shifter in the power division switch control circuit; the right end of the second switch control circuit is connected to the left end of the second meandering line phase shifter in the power division switch control circuit; the right end of the third switch control circuit is connected to the left end of the third meandering line phase shifter in the power division switch control circuit; the right end of the fourth switch control circuit is connected to the left end of the fourth meandering line phase shifter in the power division switch control circuit; the right end of the fifth switch control circuit is connected to the left end of the fifth meandering line phase shifter in the power division switch control circuit; the right end of the sixth switch control circuit is connected to the left end of the sixth meandering line phase shifter in the power division switch control circuit; the right end of the seventh switch control circuit is connected to the left end of the seventh meandering line phase shifter in the power division switch control circuit; the right end of the eighth switch control circuit is connected to the left end of the eighth meandering line phase shifter in the power division switch control circuit;

[0013] The right end of the first meandering line phase shifter in the power division switch control circuit is connected to the upper left end of the first four-branch directional coupler in the first 4×4 beamforming network; the upper right end of the first four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the first phase shifter; the right end of the first phase shifter in the first 4×4 beamforming network is connected to the first output port;

[0014] The right end of the second meandering line phase shifter in the power division switch control circuit is connected to the upper left end of the fourth four-branch directional coupler in the first 4×4 beamforming network; the upper right end of the fourth four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the fifth phase shifter; the right end of the fifth phase shifter in the first 4×4 beamforming network is connected to the lower left end of the first four-branch directional coupler; the lower right end of the first four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the eighth phase shifter; the right end of the eighth phase shifter in the first 4×4 beamforming network is connected to the upper left end of the second four-branch directional coupler; the upper right end of the second four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the second phase shifter; the right end of the second phase shifter in the first 4×4 beamforming network is connected to the second output port;

[0015] The right end of the third meandering line phase shifter in the power division switch control circuit is connected to the upper left end of the seventh four-branch directional coupler in the first 4×4 beamforming network; the upper right end of the seventh four-branch directional coupler in the first 4×4 beamforming network is connected to the lower left end of the fourth four-branch directional coupler; the lower right end of the fourth four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the eleventh phase shifter; the right end of the eleventh phase shifter in the first 4×4 beamforming network is connected to the upper left end of the fifth four-branch directional coupler; the right end of the fifth four-branch directional coupler in the first 4×4 beamforming network is connected to the upper left end of the fifth four-branch directional coupler. The upper end is connected to the left end of the sixth phase shifter; the right end of the sixth phase shifter in the first 4×4 beamforming network is connected to the lower left end of the second four-branch directional coupler; the lower right end of the second four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the ninth phase shifter; the right end of the ninth phase shifter in the first 4×4 beamforming network is connected to the upper left end of the third four-branch directional coupler; the upper right end of the third four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the third phase shifter; the right end of the third phase shifter in the first 4×4 beamforming network is connected to the third output port;

[0016] The right end of the fourth meandering line phase shifter in the power division switch control circuit is connected to the upper left end of the fourteenth branch directional coupler in the first 4×4 beamforming network; the upper right end of the fourteenth branch directional coupler in the first 4×4 beamforming network is connected to the lower left end of the seventh four-branch directional coupler; the lower right end of the seventh four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the fourteenth phase shifter; the right end of the fourteenth phase shifter in the first 4×4 beamforming network is connected to the upper left end of the eighth four-branch directional coupler; the upper right end of the eighth four-branch directional coupler in the first 4×4 beamforming network is connected to the lower left end of the fifth four-branch directional coupler; the lower right end of the fifth four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the twelfth phase shifter; The right end of the twelfth phase shifter in a 4×4 beamforming network is connected to the upper left end of the sixth four-branch directional coupler; the upper right end of the sixth four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the seventh phase shifter; the right end of the seventh phase shifter in the first 4×4 beamforming network is connected to the lower left end of the third four-branch directional coupler; the lower right end of the third four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the tenth phase shifter; the right end of the tenth phase shifter in the first 4×4 beamforming network is connected to the upper left end of the first three-branch directional coupler; the upper right end of the first three-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the fourth phase shifter; the right end of the fourth phase shifter in the first 4×4 beamforming network is connected to the fourth output port;

[0017] The lower left end of the fourteenth branch directional coupler in the first 4×4 beamforming network is connected to a 50 ohm matching load; the lower right end of the fourteenth branch directional coupler in the first 4×4 beamforming network is connected to the left end of the seventeenth phase shifter; the right end of the seventeenth phase shifter in the first 4×4 beamforming network is connected to the upper left end of the eleventh fourteenth branch directional coupler; the upper right end of the eleventh fourteenth branch directional coupler in the first 4×4 beamforming network is connected to the lower left end of the eighth four-branch directional coupler; the lower right end of the eighth four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the fifteenth phase shifter; The right end is connected to the upper left end of the ninth four-branch directional coupler; the upper right end of the ninth four-branch directional coupler in the first 4×4 beamforming network is connected to the lower left end of the sixth four-branch directional coupler; the lower right end of the sixth four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the thirteenth phase shifter; the right end of the thirteenth phase shifter in the first 4×4 beamforming network is connected to the upper left end of the second three-branch directional coupler; the upper right end of the second three-branch directional coupler in the first 4×4 beamforming network is connected to the lower left end of the first three-branch directional coupler; the lower right end of the first three-branch directional coupler in the first 4×4 beamforming network is connected to a 50-ohm matching load;

[0018] The lower left end of the eleventh four-branch directional coupler in the first 4×4 beamforming network is connected to a 50-ohm matching load; the lower right end of the eleventh four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the eighteenth phase shifter; the right end of the eighteenth phase shifter in the first 4×4 beamforming network is connected to the upper left end of the twelfth four-branch directional coupler; the upper right end of the twelfth four-branch directional coupler in the first 4×4 beamforming network is connected to the lower left end of the ninth four-branch directional coupler; the lower right end of the ninth four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the sixteenth phase shifter; the right end of the sixteenth phase shifter in the first 4×4 beamforming network is connected to the upper left end of the third three-branch directional coupler; the upper right end of the third three-branch directional coupler in the first 4×4 beamforming network is connected to the lower left end of the second three-branch directional coupler; the lower right end of the second three-branch directional coupler in the first 4×4 beamforming network is connected to a 50-ohm matching load;

[0019] The lower left end of the twelfth four-branch directional coupler in the first 4×4 beamforming network is connected to a 50-ohm matching load; the lower right end of the twelfth four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the nineteenth phase shifter; the right end of the nineteenth phase shifter in the first 4×4 beamforming network is connected to the upper left end of the fourth three-branch directional coupler; the upper right end of the fourth three-branch directional coupler in the first 4×4 beamforming network is connected to the lower left end of the third three-branch directional coupler; the lower right end of the third three-branch directional coupler in the first 4×4 beamforming network is connected to a 50-ohm matching load; the lower left and lower right ends of the fourth three-branch directional coupler in the first 4×4 beamforming network are connected to a 50-ohm matching load;

[0020] The connection mode between the second 4×4 beamforming network and the power division switch control circuit, the fifth output port, the sixth output port, the seventh output port, and the eighth output port is the same as the connection mode of the first 4×4 beamforming network, but in a mirror relationship.

[0021] Furthermore, different beams can be obtained by using the first switch control circuit, the second switch control circuit, the third switch control circuit, the fourth switch control circuit, the fifth switch control circuit, the sixth switch control circuit, the seventh switch control circuit, and the eighth switch control circuit in the power division switch control circuit; by using the first four-branch directional coupler, the second four-branch directional coupler, the third four-branch directional coupler, the fourth four-branch directional coupler, the fifth four-branch directional coupler, the sixth four-branch directional coupler, the seventh four-branch directional coupler, the eighth four-branch directional coupler, and the ninth four-branch directional coupler in the first 4×4 beamforming network The first 4×4 beamforming network comprises a first 4-branch directional coupler, a second 4×4 beamforming network, a third 4-branch directional coupler, a fourth 4-branch directional coupler, a fifth 4-branch directional coupler, a sixth 4-branch directional coupler, a seventh 4-branch directional coupler, an eighth 4-branch directional coupler, a ninth 4-branch directional coupler, a fourth 4-branch directional coupler, a sixth 4×4 beamforming network, and a fourth 4×4 beamforming network. The directional coupler, the twelfth four-branch directional coupler, the first three-branch directional coupler, the second three-branch directional coupler, the third three-branch directional coupler, and the fourth three-branch directional coupler are used to obtain an in-band flat Chebyshev amplitude output; the first meandering line phase shifter, the second meandering line phase shifter, the third meandering line phase shifter, the fourth meandering line phase shifter, the fifth meandering line phase shifter, the sixth meandering line phase shifter, the seventh meandering line phase shifter, the eighth meandering line phase shifter in the power division switch control circuit, the first phase shifter, the second phase shifter, the third phase shifter, the fourth phase shifter, the fifth phase shifter, the sixth phase shifter, the seventh meandering line phase shifter in the first 4×4 beamforming network are used to obtain an in-band flat Chebyshev amplitude output; the first meandering line phase shifter, the second phase shifter, the third phase shifter, the fourth phase shifter, the fifth phase shifter, the sixth phase shifter, the seventh meandering line phase shifter in the power division switch control circuit The phase shifter, the eighth phase shifter, the ninth phase shifter, the tenth phase shifter, the eleventh phase shifter, the twelfth phase shifter, the thirteenth phase shifter, the fourteenth phase shifter, the fifteenth phase shifter, the sixteenth phase shifter, the seventeenth phase shifter, the eighteenth phase shifter, and the nineteenth phase shifter obtain an in-band flat phase difference output with the first phase shifter, the second phase shifter, the third phase shifter, the fourth phase shifter, the fifth phase shifter, the sixth phase shifter, the seventh phase shifter, the eighth phase shifter, the ninth phase shifter, the tenth phase shifter, the eleventh phase shifter, the twelfth phase shifter, the thirteenth phase shifter, the fourteenth phase shifter, the fifteenth phase shifter, and the sixteenth phase shifter in the second 4×4 beamforming network.

[0022] Furthermore, the coupling degree of the first four-branch directional coupler in the first 4×4 beamforming network is 0.095 dB; the coupling degree of the second four-branch directional coupler is 0.236 dB; the coupling degree of the third four-branch directional coupler is 0.538 dB; the coupling degree of the fourth four-branch directional coupler is 0.097 dB; the coupling degree of the fifth four-branch directional coupler is 0.239 dB; the coupling degree of the sixth four-branch directional coupler is 0.573 dB; the coupling degree of the seventh four-branch directional coupler is 0.100 dB; the coupling degree of the eighth four-branch directional coupler is 0. The coupling degree of the 9th four-branch directional coupler is 0.645dB; the coupling degree of the 14th branch directional coupler is 0.102dB; the coupling degree of the 11th four-branch directional coupler is 0.269dB; the coupling degree of the 12th four-branch directional coupler is 0.698dB; the coupling degree of the first three-branch directional coupler is 0.892dB; the coupling degree of the second three-branch directional coupler is 0.906dB; the coupling degree of the third three-branch directional coupler is 1.117dB; the coupling degree of the fourth three-branch directional coupler is 1.149 dB; the coupling degree of the first four-branch directional coupler in the second 4×4 beamforming network is 0.095 dB; the coupling degree of the second four-branch directional coupler is 0.236 dB; the coupling degree of the third four-branch directional coupler is 0.538 dB; the coupling degree of the fourth four-branch directional coupler is 0.097 dB; the coupling degree of the fifth four-branch directional coupler is 0.239 dB; the coupling degree of the sixth four-branch directional coupler is 0.573 dB; the coupling degree of the seventh four-branch directional coupler is 0.100 dB; the coupling degree of the eighth four-branch directional coupler is 0.265dB; the coupling degree of the ninth four-branch directional coupler is 0.645dB; the coupling degree of the fourteenth branch directional coupler is 0.102dB; the coupling degree of the eleventh four-branch directional coupler is 0.269dB; the coupling degree of the twelfth four-branch directional coupler is 0.698dB; the coupling degree of the first three-branch directional coupler is 0.892dB; the coupling degree of the second three-branch directional coupler is 0.906dB; the coupling degree of the third three-branch directional coupler is 1.117dB; the coupling degree of the fourth three-branch directional coupler is 1.149dB.

[0023] Furthermore, the phase difference between the first meandering line phase shifter and the eighth meandering line phase shifter in the power division switch control circuit is 405°; the phase difference between the second meandering line phase shifter and the seventh meandering line phase shifter is 225°; the phase difference between the sixth meandering line phase shifter and the third meandering line phase shifter is 45°; the phase difference between the fifth meandering line phase shifter and the fourth meandering line phase shifter is 225°; the phase shift value of the first phase shifter in the first 4×4 beamforming network is 1440°; the phase shift value of the second phase shifter and the fifth phase shifter is 1080°; the phase shift value of the third phase shifter and the sixth phase shifter is 720°, and the phase shift value of the fourth phase shifter and the seventh phase shifter is 360°; the phase shift value of the eighth phase shifter and the ninth phase shifter is 45°; the phase shift value of the tenth phase shifter is 135°; the phase shift value of the eleventh phase shifter and the twelfth phase shifter is 225°; the phase shift value of the thirteenth phase shifter ...35°; the phase shift value of the eleventh phase shifter and the twelfth phase shifter is 225°; The phase shift value of the phase shifter is 405°; the phase shift value of the fourteenth phase shifter and the fifteenth phase shifter is 315°; the phase shift value of the sixteenth phase shifter is 585°; the phase shift value of the seventeenth phase shifter and the eighteenth phase shifter is 495°; the phase shift value of the nineteenth phase shifter is 855°; the phase shift value of the first phase shifter of the second 4×4 beamforming network is 2160°; the phase shift value of the second phase shifter is 1440°; the phase shift value of the third phase shifter is 720°; the phase shift value of the fourth phase shifter is 360°; the phase shift value of the fifth phase shifter, the sixth phase shifter, the tenth phase shifter and the thirteenth phase shifter is 315°; the phase shift value of the seventh phase shifter is 45°; the phase shift value of the eighth phase shifter and the ninth phase shifter is 495°; the phase shift value of the eleventh phase shifter and the twelfth phase shifter is 405°; the phase shift value of the fourteenth phase shifter, the fifteenth phase shifter and the sixteenth phase shifter is 585°.

[0024] Due to the adoption of the above technical scheme, a 4×8 beamforming network with Chebyshev amplitude distribution provided by the present invention has the following advantages: by adopting a power division switch control circuit, two 4×4 beamforming networks are connected together to obtain different beams; by adopting a three-branch / four-branch directional coupler, a 4×8 beamforming network with Chebyshev amplitude distribution is realized; by adopting a phase compensation technology, a relatively flat phase curve within the band is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the structure of a 4×8 beamforming network with Chebyshev amplitude distribution of the present invention;

[0027] Figure 2 It is a structural schematic diagram of a power division switch control circuit in a 4×8 beamforming network with Chebyshev amplitude distribution according to the present invention;

[0028] Figure 3 It is a structural schematic diagram of a first 4×4 beamforming network in a 4×8 beamforming network with Chebyshev amplitude distribution according to the present invention;

[0029] Figure 4 It is a schematic structural diagram of a second 4×4 beamforming network in a 4×8 beamforming network with Chebyshev amplitude distribution according to the present invention;

[0030] Figure 5 It is a structural schematic diagram of a first power division circuit in a power division switch control circuit in a 4×8 beamforming network with Chebyshev amplitude distribution according to the present invention;

[0031] Figure 6 It is a structural schematic diagram of a switch control circuit in a power division switch control circuit in a 4×8 beamforming network with Chebyshev amplitude distribution according to the present invention;

[0032] Figure 7 It is a diagram of impedance matching results of each input port of a 4×8 beamforming network with Chebyshev amplitude distribution of the present invention;

[0033] Figure 8 It is a result diagram of the amplitude of each output port when the 4×8 beamforming network with Chebyshev amplitude distribution of the present invention is connected to the first switch control circuit and the eighth switch control circuit;

[0034] Fig. 9 It is a result diagram of the amplitude of each output port when the 4×8 beamforming network with Chebyshev amplitude distribution of the present invention is connected to the second switch control circuit and the seventh switch control circuit;

[0035] Fig.10 It is a result diagram of the amplitude of each output port when the 4×8 beamforming network with Chebyshev amplitude distribution of the present invention is connected to the third switch control circuit and the sixth switch control circuit;

[0036] Fig.11 It is a result diagram of the amplitude of each output port when the 4×8 beamforming network with Chebyshev amplitude distribution of the present invention is connected to the fourth switch control circuit and the fifth switch control circuit;

[0037] Fig.12 It is a phase difference result diagram between each output port when the 4×8 beamforming network with Chebyshev amplitude distribution of the present invention is connected to the first switch control circuit and the eighth switch control circuit;

[0038] Fig.13 It is a phase difference result diagram between each output port when the 4×8 beamforming network with Chebyshev amplitude distribution of the present invention is connected to the second switch control circuit and the seventh switch control circuit;

[0039] Fig.14 It is a phase difference result diagram between the output ports when the 4×8 beamforming network with Chebyshev amplitude distribution of the present invention is connected to the third switch control circuit and the sixth switch control circuit;

[0040] Fig.15 It is a phase difference result diagram between the output ports when the 4×8 beamforming network with Chebyshev amplitude distribution of the present invention is connected to the fourth switch control circuit and the fifth switch control circuit;

[0041] In the figure: 01, power division switch control circuit, 02, first 4×4 beamforming network, 03, second 4×4 beamforming network, 04, input port, 0501, first output port, 0502, second output port, 0503, third output port, 0504, fourth output port, 0505, fifth output port, 0506, sixth output port, 0507, seventh output port, 0508, eighth output port;

[0042] 0101, a first power division circuit, 0102, a second power division circuit, 0103, a third power division circuit, 0104, a fourth power division circuit, 0105, a fifth power division circuit, 0106, a sixth power division circuit, 0107, a seventh power division circuit, 0108, a first switch control circuit, 0109, a second switch control circuit, 0110, a third switch control circuit, 0111, a fourth switch control circuit, 0112, a fifth switch control circuit, 0113, a sixth switch control circuit, 0114, a seventh switch control circuit, 0115, an eighth switch control circuit, 0116, a first meander line phase shifter, 0117, a second meander line phase shifter, 0118, a third meander line phase shifter, 0119, a fourth meander line phase shifter, 0120, a fifth meander line phase shifter, 0121, a sixth meander line phase shifter, 0122, a seventh meander line phase shifter, 0123, an eighth meander line phase shifter;

[0043] 0201, the first phase shifter, 0202, the second phase shifter, 0203, the third phase shifter, 0204, the fourth phase shifter, 0205, the fifth phase shifter, 0206, the sixth phase shifter, 0207, the seventh phase shifter, 0208, the eighth phase shifter, 0209, the ninth phase shifter, 0210, the tenth phase shifter, 0211, the eleventh phase shifter, 0212, the twelfth phase shifter, 0213, the thirteenth phase shifter, 0214, the fourteenth phase shifter, 0215, the fifteenth phase shifter, 0216, the sixteenth phase shifter, 0217, the seventeenth phase shifter, 0218, the eighteenth phase shifter, 0219, the nineteenth phase shifter, 0220, the first four-branch directional coupler, 0221 , the second four-branch directional coupler, 0222, the third four-branch directional coupler, 0223, the fourth four-branch directional coupler, 0224, the fifth four-branch directional coupler, 0225, the sixth four-branch directional coupler, 0226, the seventh four-branch directional coupler, 0227, the eighth four-branch directional coupler, 0228, the ninth four-branch directional coupler, 0229, the fourteenth branch directional coupler, 0230, the eleventh four-branch directional coupler, 0231, the twelfth four-branch directional coupler, 0232, the first three-branch directional coupler, 0233, the second three-branch directional coupler, 0234, the third three-branch directional coupler, 0235, the fourth three-branch directional coupler;

[0044] 0301, the first phase shifter, 0302, the second phase shifter, 0303, the third phase shifter, 0304, the fourth phase shifter, 0305, the fifth phase shifter, 0306, the sixth phase shifter, 0307, ​​the seventh phase shifter, 0308, the eighth phase shifter, 0309, the ninth phase shifter, 0310, the tenth phase shifter, 0311, the eleventh phase shifter, 0312, the twelfth phase shifter, 0313, the thirteenth phase shifter, 0314, the fourteenth phase shifter, 0315, the fifteenth phase shifter, 0316, the sixteenth phase shifter, 0317, the first four-branch directional coupler, 0318, the second four-branch directional coupler, 0319, the three four-branch directional couplers, 0320, fourth four-branch directional couplers, 0321, fifth four-branch directional couplers, 0322, sixth four-branch directional couplers, 0323, seventh four-branch directional couplers, 0324, eighth four-branch directional couplers, 0325, ninth four-branch directional couplers, 0326, fourteenth four-branch directional couplers, 0327, eleventh four-branch directional couplers, 0328, twelfth four-branch directional couplers, 0329, first three-branch directional couplers, 0330, second three-branch directional couplers, 0331, third three-branch directional couplers, 0332, fourth three-branch directional couplers;

[0045] 010101, a first transmission microstrip line, 010102, a second transmission microstrip line, 010103, a third transmission microstrip line, 010104, a fourth transmission microstrip line, 010105, a first chip capacitor, 010106, a first chip resistor;

[0046] 010801, a first transmission microstrip line, 010802, a second transmission microstrip line, 010803, a third transmission microstrip line, 010804, a fourth transmission microstrip line, 010805, a first chip resistor, 010806, a second chip resistor, 010807, a third chip resistor, 010808, a fourth chip resistor, 010809, a first chip capacitor, 010810, a second chip capacitor, 010811, a first short-circuit pin, 010812, a second short-circuit pin, 010813, a third short-circuit pin, 010814, a first welding pad, 010815, a first switching diode;

[0047] 022001, a first low-impedance horizontal microstrip line, 022002, a first low-impedance horizontal microstrip line, 022003, a first high-impedance vertical microstrip line, 022004, a second high-impedance vertical microstrip line, 022005, a first low-impedance vertical microstrip line, 022006, a second low-impedance vertical microstrip line;

[0048] 023201, a first low-impedance horizontal microstrip line, 023202, a second low-impedance horizontal microstrip line, 023203, a first low-impedance vertical microstrip line, 023204, a first high-impedance vertical microstrip line, 023205, a second high-impedance vertical microstrip line;

[0049] 031701, a first low-impedance horizontal microstrip line, 031702, a first low-impedance horizontal microstrip line, 031703, a first high-impedance vertical microstrip line, 031704, a second high-impedance vertical microstrip line, 031705, a first low-impedance vertical microstrip line, 031706, a second low-impedance vertical microstrip line. DETAILED DESCRIPTION

[0050] In order to make the purpose of the invention, implementation method and implementation function of the present invention more clear, the present invention is further described below in conjunction with specific implementation methods and drawings.

[0051] The technical indicators used in this embodiment are as follows:

[0052] Center Frequency: 5.8GHz:

[0053] Relative bandwidth: 10%

[0054] In-band return loss of each port: >10dB;

[0055] Amplitude ratio between output ports: 0.378: 0.584: 0.842: 1: 1: 0.842: 0.584: 0.378

[0056] Phase between output ports: -45°, 135°, 45°, -135°

[0057] Output port amplitude error: 1dB

[0058] Output port phase error: 10°

[0059] like Figure 1 As shown, a 4×8 beamforming network with Chebyshev amplitude distribution includes a power division switch control circuit, a first 4×4 beamforming network, a second 4×4 beamforming network, an input port and an output port;

[0060] The power division switch control circuit includes a first power division circuit, a second power division circuit, a third power division circuit, a fourth power division circuit, a fifth power division circuit, a sixth power division circuit, a seventh power division circuit, a first switch control circuit, a second switch control circuit, a third switch control circuit, a fourth switch control circuit, a fifth switch control circuit, a sixth switch control circuit, a seventh switch control circuit, an eighth switch control circuit, a first meandering line phase shifter, a second meandering line phase shifter, a third meandering line phase shifter, a fourth meandering line phase shifter, a fifth meandering line phase shifter, a sixth meandering line phase shifter, a seventh meandering line phase shifter, and an eighth meandering line phase shifter;

[0061] The first power division circuit includes a first transmission microstrip line, a second transmission microstrip line, a third transmission microstrip line, a fourth transmission microstrip line, a first patch capacitor, and a first patch resistor; the second power division circuit includes a first transmission microstrip line, a second transmission microstrip line, a third transmission microstrip line, a first patch capacitor, and a first patch resistor; the third power division circuit has the same structure as the second power division circuit; the second power division circuit, the third power division circuit, the fourth power division circuit, the fifth power division circuit, the sixth power division circuit, the seventh power division circuit and the first power division circuit are all composed of transmission lines, patch capacitors and patch resistors;

[0062] The first switch control circuit includes a first transmission microstrip line, a second transmission microstrip line, a third transmission microstrip line, a fourth transmission microstrip line, a first chip resistor, a second chip resistor, a third chip resistor, a fourth chip resistor, a first chip capacitor, a second chip capacitor, a first short-circuit pin, a second short-circuit pin, a third short-circuit pin, a first welding pad, and a first switch diode; the second switch control circuit, the third switch control circuit, the fourth switch control circuit, the fifth switch control circuit, the sixth switch control circuit, the seventh switch control circuit, and the eighth switch control circuit have the same structure as the first switch control circuit;

[0063] The first 4×4 beamforming network includes a first phase shifter, a second phase shifter, a third phase shifter, a fourth phase shifter, a fifth phase shifter, a sixth phase shifter, a seventh phase shifter, an eighth phase shifter, a ninth phase shifter, a tenth phase shifter, an eleventh phase shifter, a twelfth phase shifter, a thirteenth phase shifter, a fourteenth phase shifter, a fifteenth phase shifter, a sixteenth phase shifter, a seventeenth phase shifter, an eighteenth phase shifter, a nineteenth phase shifter, a first four-branch directional coupler, a second four-branch directional coupler, a third four-branch directional coupler, a fourth four-branch directional coupler, a fifth four-branch directional coupler, a sixth four-branch directional coupler, a seventh four-branch directional coupler, an eighth four-branch directional coupler, a ninth four-branch directional coupler, a fourteenth branch directional coupler, an eleventh four-branch directional coupler, a twelfth four-branch directional coupler, a first three-branch directional coupler, a second three-branch directional coupler, a third three-branch directional coupler, and a fourth three-branch directional coupler;

[0064] The coupling degrees of the first four-branch directional coupler, the fourth four-branch directional coupler, the seventh four-branch directional coupler, the fourteenth four-branch directional coupler, the second four-branch directional coupler, the fifth four-branch directional coupler, the eighth four-branch directional coupler, the eleventh four-branch directional coupler, the third four-branch directional coupler, the sixth four-branch directional coupler, the ninth four-branch directional coupler, and the twelfth four-branch directional coupler are arranged from small to large; the coupling degrees of the first three-branch directional coupler, the second three-branch directional coupler, the third three-branch directional coupler, and the fourth three-branch directional coupler are arranged from small to large;

[0065] The structure of the second 4×4 beamforming network (03) is in a mirror image relationship with the first 4×4 beamforming network (02), with the same components but different structural parameters.

[0066] The input port includes a first input port; the output port includes a first output port, a second output port, a third output port, a fourth output port, a fifth output port, a sixth output port, a seventh output port, and an eighth output port;

[0067] The first input port is connected to the left end of the first power division circuit of the power division switch control circuit; the upper right end of the first power division circuit is connected to the left end of the second power division circuit; the lower right end of the first power division circuit is connected to the left end of the third power division circuit; the upper right end of the second power division circuit is connected to the left end of the fourth power division circuit; the lower right end of the second power division circuit is connected to the left end of the fifth power division circuit; the upper right end of the third power division circuit is connected to the left end of the sixth power division circuit; the lower right end of the third power division circuit is connected to the left end of the seventh power division circuit. The left end of the fourth power division circuit is connected; the upper right end of the fourth power division circuit is connected to the left end of the first switch control circuit; the lower right end of the fourth power division circuit is connected to the left end of the second switch control circuit; the upper right end of the fifth power division circuit is connected to the left end of the third switch control circuit; the lower right end of the fifth power division circuit is connected to the left end of the fourth switch control circuit; the upper right end of the sixth power division circuit is connected to the left end of the fifth switch control circuit; the lower right end of the sixth power division circuit is connected to the left end of the sixth switch control circuit; the seventh power division circuit The upper right end of the seventh switch control circuit is connected to the left end of the seventh power division circuit; the lower right end of the seventh power division circuit is connected to the left end of the eighth switch control circuit; the right end of the first switch control circuit is connected to the left end of the first meandering line phase shifter in the power division switch control circuit; the right end of the second switch control circuit is connected to the left end of the second meandering line phase shifter in the power division switch control circuit; the right end of the third switch control circuit is connected to the left end of the third meandering line phase shifter in the power division switch control circuit; the right end of the fourth switch control circuit is connected to the left end of the fourth meandering line phase shifter in the power division switch control circuit; the right end of the fifth switch control circuit is connected to the left end of the fifth meandering line phase shifter in the power division switch control circuit; the right end of the sixth switch control circuit is connected to the left end of the sixth meandering line phase shifter in the power division switch control circuit; the right end of the seventh switch control circuit is connected to the left end of the seventh meandering line phase shifter in the power division switch control circuit; the right end of the eighth switch control circuit is connected to the left end of the eighth meandering line phase shifter in the power division switch control circuit;

[0068] The right end of the first meandering line phase shifter in the power division switch control circuit is connected to the upper left end of the first four-branch directional coupler in the first 4×4 beamforming network; the upper right end of the first four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the first phase shifter; the right end of the first phase shifter in the first 4×4 beamforming network is connected to the first output port;

[0069] The right end of the second meandering line phase shifter in the power division switch control circuit is connected to the upper left end of the fourth four-branch directional coupler in the first 4×4 beamforming network; the upper right end of the fourth four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the fifth phase shifter; the right end of the fifth phase shifter in the first 4×4 beamforming network is connected to the lower left end of the first four-branch directional coupler; the lower right end of the first four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the eighth phase shifter; the right end of the eighth phase shifter in the first 4×4 beamforming network is connected to the upper left end of the second four-branch directional coupler; the upper right end of the second four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the second phase shifter; the right end of the second phase shifter in the first 4×4 beamforming network is connected to the second output port;

[0070] The right end of the third meandering line phase shifter in the power division switch control circuit is connected to the upper left end of the seventh four-branch directional coupler in the first 4×4 beamforming network; the upper right end of the seventh four-branch directional coupler in the first 4×4 beamforming network is connected to the lower left end of the fourth four-branch directional coupler; the lower right end of the fourth four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the eleventh phase shifter; the right end of the eleventh phase shifter in the first 4×4 beamforming network is connected to the upper left end of the fifth four-branch directional coupler; the right end of the fifth four-branch directional coupler in the first 4×4 beamforming network is connected to the upper left end of the fifth four-branch directional coupler. The upper end is connected to the left end of the sixth phase shifter; the right end of the sixth phase shifter in the first 4×4 beamforming network is connected to the lower left end of the second four-branch directional coupler; the lower right end of the second four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the ninth phase shifter; the right end of the ninth phase shifter in the first 4×4 beamforming network is connected to the upper left end of the third four-branch directional coupler; the upper right end of the third four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the third phase shifter; the right end of the third phase shifter in the first 4×4 beamforming network is connected to the third output port;

[0071] The right end of the fourth meandering line phase shifter in the power division switch control circuit is connected to the upper left end of the fourteenth branch directional coupler in the first 4×4 beamforming network; the upper right end of the fourteenth branch directional coupler in the first 4×4 beamforming network is connected to the lower left end of the seventh four-branch directional coupler; the lower right end of the seventh four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the fourteenth phase shifter; the right end of the fourteenth phase shifter in the first 4×4 beamforming network is connected to the upper left end of the eighth four-branch directional coupler; the upper right end of the eighth four-branch directional coupler in the first 4×4 beamforming network is connected to the lower left end of the fifth four-branch directional coupler; the lower right end of the fifth four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the twelfth phase shifter; The right end of the twelfth phase shifter in a 4×4 beamforming network is connected to the upper left end of the sixth four-branch directional coupler; the upper right end of the sixth four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the seventh phase shifter; the right end of the seventh phase shifter in the first 4×4 beamforming network is connected to the lower left end of the third four-branch directional coupler; the lower right end of the third four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the tenth phase shifter; the right end of the tenth phase shifter in the first 4×4 beamforming network is connected to the upper left end of the first three-branch directional coupler; the upper right end of the first three-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the fourth phase shifter; the right end of the fourth phase shifter in the first 4×4 beamforming network is connected to the fourth output port;

[0072] The lower left end of the fourteenth branch directional coupler in the first 4×4 beamforming network is connected to a 50 ohm matching load; the lower right end of the fourteenth branch directional coupler in the first 4×4 beamforming network is connected to the left end of the seventeenth phase shifter; the right end of the seventeenth phase shifter in the first 4×4 beamforming network is connected to the upper left end of the eleventh fourteenth branch directional coupler; the upper right end of the eleventh fourteenth branch directional coupler in the first 4×4 beamforming network is connected to the lower left end of the eighth four-branch directional coupler; the lower right end of the eighth four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the fifteenth phase shifter; The right end is connected to the upper left end of the ninth four-branch directional coupler; the upper right end of the ninth four-branch directional coupler in the first 4×4 beamforming network is connected to the lower left end of the sixth four-branch directional coupler; the lower right end of the sixth four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the thirteenth phase shifter; the right end of the thirteenth phase shifter in the first 4×4 beamforming network is connected to the upper left end of the second three-branch directional coupler; the upper right end of the second three-branch directional coupler in the first 4×4 beamforming network is connected to the lower left end of the first three-branch directional coupler; the lower right end of the first three-branch directional coupler in the first 4×4 beamforming network is connected to a 50-ohm matching load;

[0073] The lower left end of the eleventh four-branch directional coupler in the first 4×4 beamforming network is connected to a 50-ohm matching load; the lower right end of the eleventh four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the eighteenth phase shifter; the right end of the eighteenth phase shifter in the first 4×4 beamforming network is connected to the upper left end of the twelfth four-branch directional coupler; the upper right end of the twelfth four-branch directional coupler in the first 4×4 beamforming network is connected to the lower left end of the ninth four-branch directional coupler; the lower right end of the ninth four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the sixteenth phase shifter; the right end of the sixteenth phase shifter in the first 4×4 beamforming network is connected to the upper left end of the third three-branch directional coupler; the upper right end of the third three-branch directional coupler in the first 4×4 beamforming network is connected to the lower left end of the second three-branch directional coupler; the lower right end of the second three-branch directional coupler in the first 4×4 beamforming network is connected to a 50-ohm matching load;

[0074] The lower left end of the twelfth four-branch directional coupler in the first 4×4 beamforming network is connected to a 50-ohm matching load; the lower right end of the twelfth four-branch directional coupler in the first 4×4 beamforming network is connected to the left end of the nineteenth phase shifter; the right end of the nineteenth phase shifter in the first 4×4 beamforming network is connected to the upper left end of the fourth three-branch directional coupler; the upper right end of the fourth three-branch directional coupler in the first 4×4 beamforming network is connected to the lower left end of the third three-branch directional coupler; the lower right end of the third three-branch directional coupler in the first 4×4 beamforming network is connected to a 50-ohm matching load; the lower left and lower right ends of the fourth three-branch directional coupler in the first 4×4 beamforming network are connected to a 50-ohm matching load;

[0075] The connection mode between the second 4×4 beamforming network and the power division switch control circuit, the fifth output port, the sixth output port, the seventh output port, and the eighth output port is the same as the connection mode of the first 4×4 beamforming network, but in a mirror relationship.

[0076] Different beams can be obtained by the first switch control circuit, the second switch control circuit, the third switch control circuit, the fourth switch control circuit, the fifth switch control circuit, the sixth switch control circuit, the seventh switch control circuit and the eighth switch control circuit in the power division switch control circuit; by using the first four-branch directional coupler, the second four-branch directional coupler, the third four-branch directional coupler, the fourth four-branch directional coupler, the fifth four-branch directional coupler, the sixth four-branch directional coupler, the seventh four-branch directional coupler, the eighth four-branch directional coupler, the ninth four-branch directional coupler and the first 4×4 beamforming network. The fourteen-branch directional coupler, the eleventh four-branch directional coupler, the twelfth four-branch directional coupler, the first three-branch directional coupler, the second three-branch directional coupler, the third three-branch directional coupler, the fourth three-branch directional coupler and the first four-branch directional coupler, the second four-branch directional coupler, the third four-branch directional coupler, the fourth four-branch directional coupler, the fifth four-branch directional coupler, the sixth four-branch directional coupler, the seventh four-branch directional coupler, the eighth four-branch directional coupler, the ninth four-branch directional coupler, the fourteenth branch directional coupler, the eleventh four-branch directional coupler in the second 4×4 beamforming network. The first 4×4 beamforming network is used to form a directional coupler, a twelfth 4-branch directional coupler, a first 3-branch directional coupler, a second 3-branch directional coupler, a third 3-branch directional coupler, and a fourth 3-branch directional coupler to obtain an in-band flat Chebyshev amplitude output; the first 4×4 beamforming network is used to form a directional coupler, a twelfth 4-branch directional coupler, a first 3-branch directional coupler, a second 3-branch directional coupler, a third 3-branch directional coupler, and a fourth 3-branch directional coupler to obtain an in-band flat Chebyshev amplitude output; the first 4×4 beamforming network is used to form a directional coupler, a second ... second 4×4 beamforming network is used to form a directional coupler, a second 4×4 beamforming network is used to form a directional coupler, a second 4×4 beamforming network is used to form a directional coupler, a second 4×4 beamforming network is used to form a directional coupler, a second 4×4 beamforming network is used to form a directional coupler, a second 4×4 beamforming network is used to form a directional coupler, a second 4×4 beamforming network is used to form a directional coupler, The phase shifter, the eighth phase shifter, the ninth phase shifter, the tenth phase shifter, the eleventh phase shifter, the twelfth phase shifter, the thirteenth phase shifter, the fourteenth phase shifter, the fifteenth phase shifter, the sixteenth phase shifter, the seventeenth phase shifter, the eighteenth phase shifter, and the nineteenth phase shifter and the first phase shifter, the second phase shifter, the third phase shifter, the fourth phase shifter, the fifth phase shifter, the sixth phase shifter, the seventh phase shifter, the eighth phase shifter, the ninth phase shifter, the tenth phase shifter, the eleventh phase shifter, the twelfth phase shifter, the thirteenth phase shifter, the fourteenth phase shifter, the fifteenth phase shifter, and the sixteenth phase shifter in the second 4×4 beamforming network obtain an in-band flat phase difference output.

[0077] The coupling degree of the first four-branch directional coupler in the first 4×4 beamforming network is 0.095 dB; the coupling degree of the second four-branch directional coupler is 0.236 dB; the coupling degree of the third four-branch directional coupler is 0.538 dB; the coupling degree of the fourth four-branch directional coupler is 0.097 dB; the coupling degree of the fifth four-branch directional coupler is 0.239 dB; the coupling degree of the sixth four-branch directional coupler is 0.573 dB; the coupling degree of the seventh four-branch directional coupler is 0.100 dB; the coupling degree of the eighth four-branch directional coupler is 0 .265dB; the coupling degree of the ninth four-branch directional coupler is 0.645dB; the coupling degree of the fourteenth branch directional coupler is 0.102dB; the coupling degree of the eleventh four-branch directional coupler is 0.269dB; the coupling degree of the twelfth four-branch directional coupler is 0.698dB; the coupling degree of the first three-branch directional coupler is 0.892dB; the coupling degree of the second three-branch directional coupler is 0.906dB; the coupling degree of the third three-branch directional coupler is 1.117dB; the coupling degree of the fourth three-branch directional coupler is 1.149dB ; The coupling degree of the first four-branch directional coupler in the second 4×4 beamforming network is 0.095dB; the coupling degree of the second four-branch directional coupler is 0.236dB; the coupling degree of the third four-branch directional coupler is 0.538dB; the coupling degree of the fourth four-branch directional coupler is 0.097dB; the coupling degree of the fifth four-branch directional coupler is 0.239dB; the coupling degree of the sixth four-branch directional coupler is 0.573dB; the coupling degree of the seventh four-branch directional coupler is 0.100dB; the coupling degree of the eighth four-branch directional coupler is 0 .265dB; the coupling degree of the ninth four-branch directional coupler is 0.645dB; the coupling degree of the fourteenth branch directional coupler is 0.102dB; the coupling degree of the eleventh four-branch directional coupler is 0.269dB; the coupling degree of the twelfth four-branch directional coupler is 0.698dB; the coupling degree of the first three-branch directional coupler is 0.892dB; the coupling degree of the second three-branch directional coupler is 0.906dB; the coupling degree of the third three-branch directional coupler is 1.117dB; the coupling degree of the fourth three-branch directional coupler is 1.149dB.

[0078] The phase difference between the first meandering line phase shifter and the eighth meandering line phase shifter in the power division switch control circuit is 405°; the phase difference between the second meandering line phase shifter and the seventh meandering line phase shifter is 225°; the phase difference between the sixth meandering line phase shifter and the third meandering line phase shifter is 45°; the phase difference between the fifth meandering line phase shifter and the fourth meandering line phase shifter is 225°; the phase shift value of the first phase shifter in the first 4×4 beamforming network is 1440°; the phase shift value of the second phase shifter and the fifth phase shifter is 1080°; the phase shift value of the third phase shifter and the sixth phase shifter is 720°, and the phase shift value of the fourth phase shifter and the seventh phase shifter is 360°; the phase shift value of the eighth phase shifter and the ninth phase shifter is 45°; the phase shift value of the tenth phase shifter is 135°; the phase shift value of the eleventh phase shifter and the twelfth phase shifter is 225°; the thirteenth phase shifter The phase shift value of is 405°; the phase shift value of the fourteenth phase shifter and the fifteenth phase shifter is 315°; the phase shift value of the sixteenth phase shifter is 585°; the phase shift value of the seventeenth phase shifter and the eighteenth phase shifter is 495°; the phase shift value of the nineteenth phase shifter is 855°; the phase shift value of the first phase shifter of the second 4×4 beamforming network is 2160°; the phase shift value of the second phase shifter is 1440°; the phase shift value of the third phase shifter is 720°; the phase shift value of the fourth phase shifter is 360°; the phase shift value of the fifth phase shifter, the sixth phase shifter, the tenth phase shifter and the thirteenth phase shifter is 315°; the phase shift value of the seventh phase shifter is 45°; the phase shift value of the eighth phase shifter and the ninth phase shifter is 495°; the phase shift value of the eleventh phase shifter and the twelfth phase shifter is 405°; the phase shift value of the fourteenth phase shifter, the fifteenth phase shifter and the sixteenth phase shifter is 585°.

[0079] By adopting a power division switch control circuit, two 4×4 beamforming networks are connected together to obtain different beams; by adopting a three-branch / four-branch directional coupler, a 4×8 beamforming network with Chebyshev amplitude distribution is realized; by adopting phase compensation technology, a relatively flat phase curve within the band is achieved.

[0080] Specific embodiments of the present invention are described below.

[0081] The S-parameter matrix of the coupler can be expressed as:

[0082]

[0083] Coupling degree C i with a i The relationship is: C i =-10lg(a i ). In addition, the phases of the through end and the coupled end of the coupler are α i and β i .

[0084] The α of all four branch line directional couplers in the first 4×4 beamforming network 02 and the second 4×4 beamforming network 03 i =-90°, β i = 0°, α of all three-branch directional couplers i =180°, β i =270°.

[0085] The first phase shifter 0201, the second phase shifter 0202, the third phase shifter 0203, the fourth phase shifter 0204, the fifth phase shifter 0205, the sixth phase shifter 0206, and the seventh phase shifter 0207 in the first 4×4 beamforming network 02 have no effect on the amplitude of the output signal and the phase of the center frequency. Assume that the coupling degree of the first four-branch directional coupler 0220 is C1, C1=-10lg(a1), the coupling degree of the second four-branch directional coupler 0221 is C2, C2=-10lg(a2), the coupling degree of the third four-branch directional coupler 0222 is C3, C3=-10lg(a3), and the coupling degree of the first three-branch directional coupler 0220 is C1. The coupling degree of the fourth four-branch directional coupler 0223 is C4, C4 = -10lg (a4), the coupling degree of the fifth four-branch directional coupler 0224 is C6, C6 = -10lg (a6), the coupling degree of the sixth four-branch directional coupler 0225 is C7, C7 = -10lg (a7), the coupling degree of the second three-branch directional coupler 0233 is C8, C8 = -10lg (a8), the coupling degree of the seventh four-branch directional coupler 0226 is C9, C9 = -10lg (a9), and the coupling degree of the eighth four-branch directional coupler 0227 is C 10 , C 10 =-10lg(a 10 ), the coupling degree of the ninth four-branch directional coupler 0228 is C 11 , C 11 =-10lg(a 11 ), the coupling degree of the third three-branch directional coupler 0234 is C 12 , C 12 =-10lg(a 12 ), the coupling degree of the fourteenth branch directional coupler 0229 is C 13 , C 13 =-10lg(a 13 ), the coupling degree of the eleventh four-branch directional coupler 0230 is C 14 , C 14 =-10lg(a 14 ), the coupling degree of the twelfth four-branch directional coupler 0231 is C 15 , C 15 =-10lg(a15 ), the coupling degree of the fourth three-branch directional coupler 0235 is C 16 , C 16 =-10lg(a 16 ), the phase shift value of the eighth phase shifter 0208 is θ1, the phase shift value of the ninth phase shifter 0209 is θ2, the phase shift value of the tenth phase shifter 0210 is θ3, the phase shift value of the eleventh phase shifter 0211 is θ4, the phase shift value of the twelfth phase shifter 0212 is θ5, the phase shift value of the thirteenth phase shifter 0213 is θ6, the phase shift value of the fourteenth phase shifter 0214 is θ7, the phase shift value of the fifteenth phase shifter 0215 is θ8, the phase shift value of the sixteenth phase shifter 0216 is θ9, and the phase shift value of the seventeenth phase shifter 0217 is θ 10 , the phase shift value of the eighteenth phase shifter 0218 is θ 11 , the phase shift value of the nineteenth phase shifter 0219 is θ 12 , the upper left port of the first four-branch directional coupler 0220 is port 1, the upper left port of the fourth four-branch directional coupler 0223 is port 2, the upper left port of the seventh four-branch directional coupler 0226 is port 3, the upper left port of the fourteenth branch directional coupler 0229 is port 4, the first output port 0501 is port 5, the second output port 0502 is port 6, the third output port 0503 is port 7, and the fourth output port 0504 is port 8, then the S parameter of the input-output relationship of the first 4×4 beamforming network 02 can be expressed as:

[0086]

[0087]

[0088]

[0089]

[0090]

[0091]

[0092]

[0093]

[0094]

[0095]

[0096]

[0097]

[0098]

[0099]

[0100]

[0101]

[0102] The amplitude distribution of the output port is -16.64dB, -12.86dB, -9.67dB and -8.18dB respectively, the corresponding power allocation ratio is 0.143:0.341:0.71:1, and the phase difference of the output port is -45°, 135°, 45° and -135° respectively. The above formulas can be used to obtain the coupling degree of all couplers in the first 4×4 beamforming network 02 and the phase shift value of all phase shifters.

[0103] Similarly, the S parameter of the input-output relationship of the second 4×4 beamforming network 03 is the same as the S parameter of the input-output relationship of the first 4×4 beamforming network 02. The coupling degree of all couplers in the second 4×4 beamforming network 03 and the phase shift value of all phase shifters can also be obtained through the above formula.

[0104] The power division control switch circuit 01 is composed of an eight-way equal power division power divider, a switch control circuit and a meander line phase shifter. When the first switch control circuit 0108 is connected to the eighth switch control circuit 0115, the amplitude distribution of the output port is -25.64dB, -21.86dB, -18.67dB, -17.18dB, -17.18dB, -18.67dB, -21.86dB, -25.64dB, and the corresponding power distribution ratio is the Chebyshev distribution of 0.143:0.341:0.71:1:1:0.71:0.341:0.143. The phase difference of the output port is -45°, and the first meander line phase shifter in the power division control switch circuit 01 can be obtained. The phase difference between the second meander line phase shifter 0116 and the eighth meander line phase shifter 0123 is 405°; when the second switch control circuit 0109 is connected to the seventh switch control circuit 0114, the amplitude distribution of the output port is -25.64dB, -21.86dB, -18.67dB, -17.18dB, -17.18dB, -18.67dB, -21.86dB, -25.64dB, and the corresponding power distribution ratio is the Chebyshev distribution of 0.143: 0.341: 0.71: 1: 1: 0.71: 0.341: 0.143, and the phase difference of the output port is 135°. It can be obtained that the second meander line phase shifter 0117 and the seventh meander line phase shifter 0123 in the power division control switch circuit 01 The phase difference between the line phase shifters 0122 is 225°; when the third switch control circuit 0110 is connected to the sixth switch control circuit 0113, the amplitude distribution of the output port is -25.64dB, -21.86dB, -18.67dB, -17.18dB, -17.18dB, -18.67dB, -21.86dB, -25.64dB, and the corresponding power distribution ratio is the Chebyshev distribution 0.143: 0.341: 0.71: 1: 1: 0.71: 0.341: 0.143, and the phase difference between the output port is 45°. It can be obtained that the sixth meandering line phase shifter 0121 and the third meandering line phase shifter 0118 in the power division control switch circuit 01 The phase difference of the output port is 45°; when the fourth switch control circuit 0111 is connected to the fifth switch control circuit 0112, the amplitude distribution of the output port is -25.64dB, -21.86dB, -18.67dB, -17.18dB, -17.18dB, -18.67dB, -21.86dB, -25.64dB, and the corresponding power distribution ratio is the Chebyshev distribution 0.143:0.341:0.71:1:1:0.71:0.341:0.143, and the phase difference of the output port is -135°. It can be obtained that the phase difference between the fifth meandering line phase shifter 0120 and the fourth meandering line phase shifter 0119 in the power division control switch circuit 01 is 225°.

[0105] Figure 7-Figure 15The resulting curve of this matrix is ​​given. Figure 7 As shown, when the first switch control circuit 0108 and the eighth switch control circuit 0115 in the power division control circuit 01 are connected, the return loss is |S11|, when the second switch control circuit 0109 and the seventh switch control circuit 0114 are connected, the return loss is |S22|, when the third switch control circuit 0110 and the sixth switch control circuit 0113 are connected, the return loss is |S33|, when the fourth switch control circuit 0111 and the fifth switch control circuit 0112 are connected, the return loss is |S44|, and in the range of 5.5 GHz to 6.1 GHz, the return losses |S11|, |S22|, |S33|, and |S44| are all less than -10 dB, and the impedance matching bandwidth can reach 10.3%, which shows that the input port has good matching characteristics.

[0106] like Figure 8 As shown, when the first switch control circuit 0108 in the power division control circuit 01 is connected to the eighth switch control circuit 0115, the amplitudes |S51|, |S61|, |S71|, |S81|, |S91|, |S101|, |S111|, |S121| of each output port are around -25.64dB, -21.86dB, -18.67dB, -17.18dB, -17.18dB, -18.67dB, -21.86dB, -25.64dB in the range of 5.5GHz to 6.1GHz, and the amplitude imbalance is less than 1dB, and the 1.5dB amplitude error bandwidth can reach 10.3%, which indicates that when the first switch control circuit 0108 in the power division control circuit 01 is connected to the eighth switch control circuit 0115, the amplitude flatness of each output port is good.

[0107] like Fig. 9 As shown, when the second switch control circuit 0109 in the power division control circuit 01 is connected to the seventh switch control circuit 0114, the amplitudes |S52|, |S62|, |S72|, |S82|, |S92|, |S102|, |S112|, |S122| of each output port are around -25.64dB, -21.86dB, -18.67dB, -17.18dB, -17.18dB, -18.67dB, -21.86dB, -25.64dB in the range of 5.5GHz to 6.1GHz, and the amplitude imbalance is less than 1dB, and the 1.5dB amplitude error bandwidth can reach 10.3%, which indicates that when the second switch control circuit 0109 in the power division control circuit 01 is connected to the seventh switch control circuit 0114, the amplitude flatness of each output port is better.

[0108] like Fig.10As shown, when the third switch control circuit 0110 in the power division control circuit 01 is connected to the sixth switch control circuit 0113, the amplitudes |S53|, |S63|, |S73|, |S83|, |S93|, |S103|, |S113|, |S123| of each output port are around -25.64dB, -21.86dB, -18.67dB, -17.18dB, -17.18dB, -18.67dB, -21.86dB, -25.64dB in the range of 5.5GHz to 6.1GHz, and the amplitude imbalance is less than 1dB, and the 1.5dB amplitude error bandwidth can reach 10.3%, which indicates that when the third switch control circuit 0110 in the power division control circuit 01 is connected to the sixth switch control circuit 0113, the amplitude flatness of each output port is better.

[0109] like Fig.11 As shown, when the fourth switch control circuit 0111 in the power division control circuit 01 is connected to the fifth switch control circuit 0112, the amplitudes |S44|, |S54|, |S64|, |S74|, |S84|, |S94|, |S104|, |S114|, |S124| of each output port are around -25.64dB, -21.86dB, -18.67dB, -17.18dB, -17.18dB, -18.67dB, -21.86dB, -25.64dB in the range of 5.5GHz to 6.1GHz, and the amplitude imbalance is less than 1dB, and the 1.5dB amplitude error bandwidth can reach 10.3%, which indicates that when the fourth switch control circuit 0111 in the power division control circuit 01 is connected to the fifth switch control circuit 0112, the amplitude flatness of each output port is good.

[0110] like Fig.12 As shown, when the first switch control circuit 0108 and the eighth switch control circuit 0115 in the power division control circuit 01 are connected, the phase difference between each output port is about -45° in the range of 5.5 GHz to 6.1 GHz and the phase difference imbalance is less than 10°, and the 15° phase error bandwidth can reach 10.3%, which means that when the first switch control circuit 0108 and the eighth switch control circuit 0115 in the power division control circuit 01 are connected, the phase difference between each output port is relatively flat.

[0111] like Fig.13As shown, when the second switch control circuit 0109 in the power division control circuit 01 is connected to the seventh switch control circuit 0114, the phase difference between each output port is about 135° in the range of 5.5 GHz to 6.1 GHz and the phase difference imbalance is less than 10°, and the 15° phase error bandwidth can reach 10.3%, which means that when the second switch control circuit 0109 in the power division control circuit 01 is connected to the seventh switch control circuit 0114, the phase difference between each output port is relatively flat.

[0112] like Fig.14 As shown, when the third switch control circuit 0110 and the sixth switch control circuit 0113 in the power division control circuit 01 are connected, the phase difference between each output port is about 45° in the range of 5.5 GHz to 6.1 GHz and the phase difference imbalance is less than 10°, and the 15° phase error bandwidth can reach 10.3%, which means that when the third switch control circuit 0110 and the sixth switch control circuit 0113 in the power division control circuit 01 are connected, the phase difference between each output port is relatively flat.

[0113] like Fig.15 As shown, when the fourth switch control circuit 0111 and the fifth switch control circuit 0112 in the power division control circuit 01 are connected, the phase difference between each output port is about -135° in the range of 5.5 GHz to 6.1 GHz and the phase difference imbalance is less than 10°, and the 15° phase error bandwidth can reach 10.3%, which means that when the fourth switch control circuit 0111 and the fifth switch control circuit 0112 in the power division control circuit 01 are connected, the phase difference between each output port is relatively flat.

[0114] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A 4×8 beamforming network with Chebyshev amplitude distribution, characterized in that include: A power division switch control circuit (01), a first 4×4 beamforming network (02), a second 4×4 beamforming network (03), an input port (04) and an output port (05); The power division switch control circuit (01) comprises a first power division circuit (0101), a second power division circuit (0102), a third power division circuit (0103), a fourth power division circuit (0104), a fifth power division circuit (0105), a sixth power division circuit (0106), a seventh power division circuit (0107), a first switch control circuit (0108), a second switch control circuit (0109), a third switch control circuit (0110), a fourth switch control circuit (0111), a fifth switch control circuit circuit (0112), a sixth switch control circuit (0113), a seventh switch control circuit (0114), an eighth switch control circuit (0115), a first meander line phase shifter (0116), a second meander line phase shifter (0117), a third meander line phase shifter (0118), a fourth meander line phase shifter (0119), a fifth meander line phase shifter (0120), a sixth meander line phase shifter (0121), a seventh meander line phase shifter (0122), and an eighth meander line phase shifter (0123); The first power division circuit (0101) comprises a first transmission microstrip line (010101), a second transmission microstrip line (010102), a third transmission microstrip line (010103), a fourth transmission microstrip line (010104), a first chip capacitor (010105), and a first chip resistor (010106); the second power division circuit (0102), the third power division circuit (0103), the fourth power division circuit (0104), the fifth power division circuit (0105), the sixth power division circuit (0106), the seventh power division circuit (0107), and the first power division circuit (0104) are all composed of transmission lines, chip capacitors, and chip resistors; The first switch control circuit (0108) includes a first transmission microstrip line (010801), a second transmission microstrip line (010802), a third transmission microstrip line (010803), a fourth transmission microstrip line (010804), a first chip resistor (010805), a second chip resistor (010806), a third chip resistor (010807), a fourth chip resistor (010808), a first chip capacitor (010809), a second chip capacitor (010810), and a first short-circuit pin (010811). , a second short-circuit pin (010812), a third short-circuit pin (010813), a first welding pad (010814), and a first switch diode (010815); the second switch control circuit (0109), the third switch control circuit (0110), the fourth switch control circuit (0111), the fifth switch control circuit (0112), the sixth switch control circuit (0113), the seventh switch control circuit (0114), and the eighth switch control circuit (0115) have the same structure as the first switch control circuit (0108); The first 4×4 beamforming network (02) includes a first phase shifter (0201), a second phase shifter (0202), a third phase shifter (0203), a fourth phase shifter (0204), a fifth phase shifter (0205), a sixth phase shifter (0206), a seventh phase shifter (0207), an eighth phase shifter (0208), a ninth phase shifter (0209), a tenth phase shifter (0210), an eleventh phase shifter (0211), a twelfth phase shifter (0212), a thirteenth phase shifter (0213), a fourteenth phase shifter (0214), a fifteenth phase shifter (0215), a sixteenth phase shifter (0216), a seventeenth phase shifter (0217), an eighteenth phase shifter (0218), a nineteenth phase shifter (0219), a first four-branch directional coupling a first four-branch directional coupler (0220), a second four-branch directional coupler (0221), a third four-branch directional coupler (0222), a fourth four-branch directional coupler (0223), a fifth four-branch directional coupler (0224), a sixth four-branch directional coupler (0225), a seventh four-branch directional coupler (0226), an eighth four-branch directional coupler (0227), a ninth four-branch directional coupler (0228), a fourteenth four-branch directional coupler (0229), an eleventh four-branch directional coupler (0230), a twelfth four-branch directional coupler (0231), a first three-branch directional coupler (0232), a second three-branch directional coupler (0233), a third three-branch directional coupler (0234), and a fourth three-branch directional coupler (0235); The coupling degrees of the first four-branch directional coupler (0220), the fourth four-branch directional coupler (0223), the seventh four-branch directional coupler (0226), the fourteenth four-branch directional coupler (0229), the second four-branch directional coupler (0221), the fifth four-branch directional coupler (0224), the eighth four-branch directional coupler (0227), the eleventh four-branch directional coupler (0230), the third four-branch directional coupler (0222), the sixth four-branch directional coupler (0225), the ninth four-branch directional coupler (0228), and the twelfth four-branch directional coupler (0231) are arranged from small to large; the coupling degrees of the first three-branch directional coupler (0232), the second three-branch directional coupler (0233), the third three-branch directional coupler (0234), and the fourth three-branch directional coupler (0235) are arranged from small to large; The structure of the second 4×4 beamforming network (03) is in a mirror image relationship with the first 4×4 beamforming network (02), with the same composition structure but different structural parameters; The output ports (05) include a first output port (0501), a second output port (0502), a third output port (0503), a fourth output port (0504), a fifth output port (0505), a sixth output port (0506), a seventh output port (0507), and an eighth output port (0508); The first input port (0401) is connected to the left end of the first power division circuit (0101); the upper right end of the first power division circuit (0101) is connected to the left end of the second power division circuit (0102); the lower right end of the first power division circuit (0101) is connected to the left end of the third power division circuit (0103); the upper right end of the second power division circuit (0102) is connected to the left end of the fourth power division circuit (0104); the lower right end of the second power division circuit (0102) is connected to the left end of the fifth power division circuit (0105); the upper right end of the third power division circuit (0103) is connected to the left end of the sixth power division circuit (0106); the lower right end of the third power division circuit (0103) is connected to the seventh power division circuit (0107). The left end of the fourth power division circuit (0104) is connected to the left end of the first switch control circuit (0108); the lower right end of the fourth power division circuit (0104) is connected to the left end of the second switch control circuit (0109); the upper right end of the fifth power division circuit (0105) is connected to the left end of the third switch control circuit (0110); the lower right end of the fifth power division circuit (0105) is connected to the left end of the fourth switch control circuit (0111); the upper right end of the sixth power division circuit (0106) is connected to the left end of the fifth switch control circuit (0112); the lower right end of the sixth power division circuit (0106) is connected to the left end of the sixth switch control circuit (0113); the seventh ... The upper right end of the seventh power division circuit (0107) is connected to the left end of the seventh switch control circuit (0114); the lower right end of the seventh power division circuit (0107) is connected to the left end of the eighth switch control circuit (0115); the right end of the first switch control circuit (0108) is connected to the left end of the first meandering line phase shifter (0116) in the power division switch control circuit (01); the right end of the second switch control circuit (0109) is connected to the left end of the second meandering line phase shifter (0117) in the power division switch control circuit (01); the right end of the third switch control circuit (0110) is connected to the left end of the third meandering line phase shifter (0118) in the power division switch control circuit (01); the right end of the fourth switch control circuit (0111) is connected to The left end of the fourth meandering line phase shifter (0119) in the power division switch control circuit (01) is connected; the right end of the fifth switch control circuit (0112) is connected to the left end of the fifth meandering line phase shifter (0120) in the power division switch control circuit (01); the right end of the sixth switch control circuit (0113) is connected to the left end of the sixth meandering line phase shifter (0121) in the power division switch control circuit (01); the right end of the seventh switch control circuit (0114) is connected to the left end of the seventh meandering line phase shifter (0122) in the power division switch control circuit (01); the right end of the eighth switch control circuit (0115) is connected to the left end of the eighth meandering line phase shifter (0123) in the power division switch control circuit (01); The right end of the first meandering line phase shifter (0116) in the power division switch control circuit (01) is connected to the upper left end of the first four-branch directional coupler (0220) in the first 4×4 beamforming network (02); the upper right end of the first four-branch directional coupler (0220) in the first 4×4 beamforming network (02) is connected to the left end of the first phase shifter (0201); the right end of the first phase shifter (0201) in the first 4×4 beamforming network (02) is connected to the first output port (0501); The right end of the second meandering line phase shifter (0116) in the power division switch control circuit (01) is connected to the upper left end of the fourth four-branch directional coupler (0223) in the first 4×4 beamforming network (02); the upper right end of the fourth four-branch directional coupler (0223) in the first 4×4 beamforming network (02) is connected to the left end of the fifth phase shifter (0205); the right end of the fifth phase shifter (0205) in the first 4×4 beamforming network (02) is connected to the lower left end of the first four-branch directional coupler (0220); the first 4×4 beamforming network (02 ) is connected to the left end of the eighth phase shifter (0208); the right end of the eighth phase shifter (0208) in the first 4×4 beamforming network (02) is connected to the upper left end of the second four-branch directional coupler (0221); the upper right end of the second four-branch directional coupler (0221) in the first 4×4 beamforming network (02) is connected to the left end of the second phase shifter (0202); the right end of the second phase shifter (0202) in the first 4×4 beamforming network (02) is connected to the second output port (0502); The right end of the third meandering line phase shifter (0117) in the power division switch control circuit (01) is connected to the upper left end of the seventh four-branch directional coupler (0226) in the first 4×4 beamforming network (02); the upper right end of the seventh four-branch directional coupler (0226) in the first 4×4 beamforming network (02) is connected to the lower left end of the fourth four-branch directional coupler (0223); the lower right end of the fourth four-branch directional coupler (0223) in the first 4×4 beamforming network (02) is connected to the left end of the eleventh phase shifter (0211); the right end of the eleventh phase shifter (0211) in the first 4×4 beamforming network (02) is connected to the upper left end of the fifth four-branch directional coupler (0224); the upper right end of the fifth four-branch directional coupler (0224) in the first 4×4 beamforming network (02) is connected to the left end of the eleventh phase shifter (0211); The left end of the sixth phase shifter (0206) is connected; the right end of the sixth phase shifter (0206) in the first 4×4 beamforming network (02) is connected to the lower left end of the second four-branch directional coupler (0221); the lower right end of the second four-branch directional coupler (0221) in the first 4×4 beamforming network (02) is connected to the left end of the ninth phase shifter (0209); the right end of the ninth phase shifter (0209) in the first 4×4 beamforming network (02) is connected to the upper left end of the third four-branch directional coupler (0222); the upper right end of the third four-branch directional coupler (0222) in the first 4×4 beamforming network (02) is connected to the left end of the third phase shifter (0203); the right end of the third phase shifter (0203) in the first 4×4 beamforming network (02) is connected to the third output port (0503); The right end of the fourth meandering line phase shifter (0119) in the power division switch control circuit (01) is connected to the upper left end of the fourteenth branch directional coupler (0229) in the first 4×4 beamforming network (02); the upper right end of the fourteenth branch directional coupler (0229) in the first 4×4 beamforming network (02) is connected to the lower left end of the seventh four-branch directional coupler (0226); the lower right end of the seventh four-branch directional coupler (0226) in the first 4×4 beamforming network (02) is connected to the left end of the fourteenth phase shifter (0214). The right end of the fourteenth phase shifter (0214) in the first 4×4 beamforming network (02) is connected to the upper left end of the eighth four-branch directional coupler (0227); the upper right end of the eighth four-branch directional coupler (0227) in the first 4×4 beamforming network (02) is connected to the lower left end of the fifth four-branch directional coupler (0224); the lower right end of the fifth four-branch directional coupler (0224) in the first 4×4 beamforming network (02) is connected to the left end of the twelfth phase shifter (0212); the first 4×4 beamforming network (02) is connected to the upper right end of the eighth four-branch directional coupler (0227); the upper right end of the eighth four-branch directional coupler (0227) in the first 4×4 beamforming network (02) is connected to the lower left end of the fifth four-branch directional coupler (0224); the lower right end of the fifth four-branch directional coupler (0224) in the first 4×4 beamforming network (02) is connected to the left end of the twelfth phase shifter (0212); The right end of the twelfth phase shifter (0212) in the forming network (02) is connected to the upper left end of the sixth four-branch directional coupler (0225); the upper right end of the sixth four-branch directional coupler (0225) in the first 4×4 beamforming network (02) is connected to the left end of the seventh phase shifter (0207); the right end of the seventh phase shifter (0207) in the first 4×4 beamforming network (02) is connected to the lower left end of the third four-branch directional coupler (0222); the third four-branch directional coupler in the first 4×4 beamforming network (02) is connected to the lower left end of the third four-branch directional coupler (0222); The lower right end of the first 4×4 beamforming network (0222) is connected to the left end of the tenth phase shifter (0210); the right end of the tenth phase shifter (0210) in the first 4×4 beamforming network (02) is connected to the upper left end of the first three-branch directional coupler (0232); the upper right end of the first three-branch directional coupler (0232) in the first 4×4 beamforming network (02) is connected to the left end of the fourth phase shifter (0204); the right end of the fourth phase shifter (0204) in the first 4×4 beamforming network (02) is connected to the fourth output port (0504); The left lower end of the fourteenth branch directional coupler (0229) in the first 4×4 beamforming network (02) is connected to a 50 ohm matching load; the right lower end of the fourteenth branch directional coupler (0229) in the first 4×4 beamforming network (02) is connected to the left end of the seventeenth phase shifter (0217); the right end of the seventeenth phase shifter (0217) in the first 4×4 beamforming network (02) is connected to the eleventh branch directional coupler (0230 ) is connected to the upper left end of the eleventh four-branch directional coupler (0230) in the first 4×4 beamforming network (02) is connected to the lower left end of the eighth four-branch directional coupler (0227); the lower right end of the eighth four-branch directional coupler (0227) in the first 4×4 beamforming network (02) is connected to the left end of the fifteenth phase shifter (0215); the fifteenth phase shifter (0215) in the first 4×4 beamforming network (02) is connected to the upper left end of the eleventh four-branch directional coupler (0230) in the first 4×4 beamforming network (02) is connected to the lower left end of the eighth four-branch directional coupler (0227); the lower right end of the eighth four-branch directional coupler (0227) in the first 4×4 beamforming network (02) is connected to the left end of the ) is connected to the upper left end of the ninth four-branch directional coupler (0228); the upper right end of the ninth four-branch directional coupler (0228) in the first 4×4 beamforming network (02) is connected to the lower left end of the sixth four-branch directional coupler (0225); the lower right end of the sixth four-branch directional coupler (0225) in the first 4×4 beamforming network (02) is connected to the left end of the thirteenth phase shifter (0213); the first 4×4 beamforming The right end of the thirteenth phase shifter (0213) in the network (02) is connected to the upper left end of the second three-branch directional coupler (0233); the upper right end of the second three-branch directional coupler (0233) in the first 4×4 beamforming network (02) is connected to the lower left end of the first three-branch directional coupler (0232); the lower right end of the first three-branch directional coupler (0232) in the first 4×4 beamforming network (02) is connected to a 50 ohm matching load; The lower left end of the eleventh four-branch directional coupler (0230) in the first 4×4 beamforming network (02) is connected to a 50-ohm matching load; the lower right end of the eleventh four-branch directional coupler (0230) in the first 4×4 beamforming network (02) is connected to the left end of the eighteenth phase shifter (0218); the right end of the eighteenth phase shifter (0218) in the first 4×4 beamforming network (02) is connected to the upper left end of the twelfth four-branch directional coupler (0231); the upper right end of the twelfth four-branch directional coupler (0231) in the first 4×4 beamforming network (02) is connected to the lower left end of the ninth four-branch directional coupler (0228). The right lower end of the ninth four-branch directional coupler (0227) in the first 4×4 beamforming network (02) is connected to the left end of the sixteenth phase shifter (0216); the right end of the sixteenth phase shifter (0216) in the first 4×4 beamforming network (02) is connected to the upper left end of the third three-branch directional coupler (0234); the right upper end of the third three-branch directional coupler (0234) in the first 4×4 beamforming network (02) is connected to the lower left end of the second three-branch directional coupler (0233); the right lower end of the second three-branch directional coupler (0233) in the first 4×4 beamforming network (02) is connected to a 50 ohm matching load; The lower left end of the twelfth four-branch directional coupler (0231) in the first 4×4 beamforming network (02) is connected to a 50-ohm matching load; the lower right end of the twelfth four-branch directional coupler (0231) in the first 4×4 beamforming network (02) is connected to the left end of the nineteenth phase shifter (0219); the right end of the nineteenth phase shifter (0219) in the first 4×4 beamforming network (02) is connected to the upper left end of the fourth three-branch directional coupler (0235); The upper right end of the fourth three-branch directional coupler (0235) in the first 4×4 beamforming network (02) is connected to the lower left end of the third three-branch directional coupler (0234); the lower right end of the third three-branch directional coupler (0234) in the first 4×4 beamforming network (02) is connected to a 50-ohm matching load; the lower left and lower right ends of the fourth three-branch directional coupler (0235) in the first 4×4 beamforming network (02) are connected to a 50-ohm matching load; The connection mode between the second 4×4 beamforming network (03) and the power division switch control circuit (01), the fifth output port (0505), the sixth output port (0506), the seventh output port (0507), and the eighth output port (0508) is the same as the connection mode of the first 4×4 beamforming network (02), and is in a mirror image relationship.

2. The 4×8 beamforming network with Chebyshev amplitude distribution according to claim 1, characterized in that: Different beams are obtained by using a first switch control circuit (0108), a second switch control circuit (0109), a third switch control circuit (0110), a fourth switch control circuit (0111), a fifth switch control circuit (0112), a sixth switch control circuit (0113), a seventh switch control circuit (0114), and an eighth switch control circuit (0115) in the power division switch control circuit (01); and by using a first four-branch directional coupler (0220), a second four-branch directional coupler (0221), and a second four-branch directional coupler (0222) in the first 4×4 beamforming network (02). a directional coupler (0221), a third directional coupler (0222), a fourth directional coupler (0223), a fifth directional coupler (0224), a sixth directional coupler (0225), a seventh directional coupler (0226), an eighth directional coupler (0227), a ninth directional coupler (0228), a fourteenth directional coupler (0229), an eleventh directional coupler (0230), a twelfth directional coupler (0231), a a first three-branch directional coupler (0232), a second three-branch directional coupler (0233), a third three-branch directional coupler (0234), a fourth three-branch directional coupler (0235) and a first four-branch directional coupler (0317), a second four-branch directional coupler (0318), a third four-branch directional coupler (0319), a fourth four-branch directional coupler (0320), a fifth four-branch directional coupler (0321), a sixth four-branch directional coupler (0322), The seventh four-branch directional coupler (0323), the eighth four-branch directional coupler (0324), the ninth four-branch directional coupler (0325), the fourteenth four-branch directional coupler (0326), the eleventh four-branch directional coupler (0327), the twelfth four-branch directional coupler (0328), the first three-branch directional coupler (0329), the second three-branch directional coupler (0330), the third three-branch directional coupler (0331), and the fourth three-branch directional coupler (0332) obtain an in-band flat Chebyshev amplitude output;The first meandering line phase shifter (0116), the second meandering line phase shifter (0117), the third meandering line phase shifter (0118), the fourth meandering line phase shifter (0119), the fifth meandering line phase shifter (0120), the sixth meandering line phase shifter (0121), the seventh meandering line phase shifter (0122), the eighth meandering line phase shifter (0123), the first 4×4 beamforming network (02) and the second meandering line phase shifter (0116) in the power division switch control circuit (01) are controlled. The first phase shifter (0201), the second phase shifter (0202), the third phase shifter (0203), the fourth phase shifter (0204), the fifth phase shifter (0205), the sixth phase shifter (0206), the seventh phase shifter (0207), the eighth phase shifter (0208), the ninth phase shifter (0209), the tenth phase shifter (0210), the eleventh phase shifter (0211), the twelfth phase shifter (0212), the thirteenth phase shifter (0213), the 13), a fourteenth phase shifter (0214), a fifteenth phase shifter (0215), a sixteenth phase shifter (0216), a seventeenth phase shifter (0217), an eighteenth phase shifter (0218), a nineteenth phase shifter (0219) and a first phase shifter (0301), a second phase shifter (0302), a third phase shifter (0303), a fourth phase shifter (0304), a fifth phase shifter (0305) in the second 4×4 beamforming network (03) 305), the sixth phase shifter (0306), the seventh phase shifter (0307), the eighth phase shifter (0308), the ninth phase shifter (0309), the tenth phase shifter (0310), the eleventh phase shifter (0311), the twelfth phase shifter (0312), the thirteenth phase shifter (0313), the fourteenth phase shifter (0314), the fifteenth phase shifter (0315), and the sixteenth phase shifter (0316) obtain a flat phase difference output within the band. ; 3. The 4×8 beamforming network with Chebyshev amplitude distribution according to claim 1, characterized in that: The coupling degree of the first four-branch directional coupler (0220) in the first 4×4 beamforming network (02) is 0.095 dB; the coupling degree of the second four-branch directional coupler (0221) is 0.236 dB; the coupling degree of the third four-branch directional coupler (0222) is 0.538 dB; the coupling degree of the fourth four-branch directional coupler (0223) is 0.097 dB; and the coupling degree of the fifth four-branch directional coupler (0224) is 0.239 dB; The coupling degree of the sixth four-branch directional coupler (0225) is 0.573 dB; the coupling degree of the seventh four-branch directional coupler (0226) is 0.100 dB; the coupling degree of the eighth four-branch directional coupler (0227) is 0.265 dB; the coupling degree of the ninth four-branch directional coupler (0228) is 0.645 dB; the coupling degree of the fourteenth four-branch directional coupler (0229) is 0.102 dB; the coupling degree of the eleventh four-branch directional coupler (0230) is 0.269 dB; the coupling degree of the twelfth four-branch directional coupler (0231) is 0.698 dB; the coupling degree of the first three-branch directional coupler (0231) is 0.699 dB; the coupling degree of the second three-branch directional coupler (0232) is 0.766 dB; the coupling degree of the third three-branch directional coupler (0233) is 0.834 dB; the coupling degree of the fourth four-branch directional coupler (0234) is 0.826 dB; the coupling degree of the fourth four-branch directional coupler (0235) is 0.866 dB; the coupling degree of the fourth three-branch directional coupler (0236) is 0.834 dB; the coupling degree of the fourth four-branch directional coupler (0237) is 0.866 dB; the coupling degree of the fourth three-branch directional coupler (0238) is 0.866 dB; the coupling degree of the fourth three-branch directional coupler (0239) is 0.866 dB; the coupling degree of the fourth three-branch directional coupler (0240) is 0.866 dB; the coupling degree of the fourth three-bra The coupling degree of the first four-branch directional coupler (0317) in the second 4×4 beamforming network (03) is 0.095 dB; the coupling degree of the second four-branch directional coupler (0318) is 0.236 dB; the coupling degree of the third four-branch directional coupler (0319) is 0.538 dB; The coupling degree of the fourth four-branch directional coupler (0320) is 0.097 dB; the coupling degree of the fifth four-branch directional coupler (0321) is 0.239 dB; The coupling degree of the sixth four-branch directional coupler (0322) is 0.573 dB; the coupling degree of the seventh four-branch directional coupler (0323) is 0.100 dB; The coupling degree of the eighth four-branch directional coupler (0324) is 0.265dB; the coupling degree of the ninth four-branch directional coupler (0325) is 0.645dB; the coupling degree of the fourteenth branch directional coupler (0326) is 0.102dB; the coupling degree of the eleventh four-branch directional coupler (0327) is 0.269dB; the coupling degree of the twelfth four-branch directional coupler (0328) is 0.698dB; the coupling degree of the first three-branch directional coupler (0329) is 0.892dB; the coupling degree of the second three-branch directional coupler (0330) is 0.906dB; the coupling degree of the third three-branch directional coupler (0331) is 1.117dB; and the coupling degree of the fourth three-branch directional coupler (0332) is 1.149dB.

4. The 4×8 beamforming network with Chebyshev amplitude distribution according to claim 1, characterized in that: The phase difference between the first meander line phase shifter (0116) and the eighth meander line phase shifter (0123) in the power division switch control circuit (01) is 405°; the phase difference between the second meander line phase shifter (0117) and the seventh meander line phase shifter (0122) is 225°; the phase difference between the sixth meander line phase shifter (0121) and the third meander line phase shifter (0118) is 45°; the phase difference between the fifth meander line phase shifter (0120) and the fourth meander line phase shifter (0119) is 225°; the first phase shifter (0201) in the first 4×4 beamforming network (02) is 100°; the phase difference between the first meander line phase shifter (0116) and the eighth meander line phase shifter (0123) is 405°; the phase difference between the second meander line phase shifter (0117) and the seventh meander line phase shifter (0122) is 225°; the phase difference between the sixth meander line phase shifter (0121) and the third meander line phase shifter (0118) is 45°; the phase difference between the fifth meander line phase shifter (0120) and the fourth meander line phase shifter (0119) is 225°; the phase difference between the first meander line phase shifter (0201) and the first meander line phase shifter (0119) in the first 4×4 beamforming network (02) is 100°; the phase difference between the first meander line phase shifter (0116) and the eighth meander line phase shifter (0123) in the first meander line phase shifter (011 The phase shift value is 1440°; the phase shift value of the second phase shifter (0202) and the fifth phase shifter (0205) is 1080°; the phase shift value of the third phase shifter (0203) and the sixth phase shifter (0206) is 720°, the phase shift value of the fourth phase shifter (0204) and the seventh phase shifter (0207) is 360°; the phase shift value of the eighth phase shifter (0208) and the ninth phase shifter (0209) is 45°; the phase shift value of the tenth phase shifter (0210) is 135°; the phase shift value of the eleventh phase shifter (0211) and the twelfth phase shifter (0212) is 225°; the phase shift value of the thirteenth phase shifter (0213) is 225°. The phase shift value is 405°; the phase shift value of the fourteenth phase shifter (0214) and the fifteenth phase shifter (0215) is 315°; the phase shift value of the sixteenth phase shifter (0216) is 585°; the phase shift value of the seventeenth phase shifter (0217) and the eighteenth phase shifter (0218) is 495°; the phase shift value of the nineteenth phase shifter (0219) is 855°; the phase shift value of the first phase shifter (0301) of the second 4×4 beamforming network (03) is 2160°; the phase shift value of the second phase shifter (0302) is 1440°; the phase shift value of the third phase shifter (0303) is 720°; the fourth phase shifter The phase shift value of (0304) is 360°; the phase shift value of the fifth phase shifter (0305), the sixth phase shifter (0306), the tenth phase shifter (0310) and the thirteenth phase shifter (0313) is 315°; the phase shift value of the seventh phase shifter (0307) is 45°; the phase shift value of the eighth phase shifter (0308) and the ninth phase shifter (0309) is 495°; the phase shift value of the eleventh phase shifter (0311) and the twelfth phase shifter (0312) is 405°; the phase shift value of the fourteenth phase shifter (0314), the fifteenth phase shifter (0315) and the sixteenth phase shifter (0316) is 585°.

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