CN113036436A - Miniaturized reconfigurable beam forming network architecture - Google Patents
Miniaturized reconfigurable beam forming network architecture Download PDFInfo
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- CN113036436A CN113036436A CN202110230044.3A CN202110230044A CN113036436A CN 113036436 A CN113036436 A CN 113036436A CN 202110230044 A CN202110230044 A CN 202110230044A CN 113036436 A CN113036436 A CN 113036436A
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- phase shifter
- electric bridge
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
- H01Q3/36—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means with variable phase-shifters
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Abstract
The invention relates to the field of wireless communication, in particular to a miniaturized reconfigurable beam forming network architecture, which comprises a primary electric bridge and a secondary electric bridge, wherein the primary electric bridge comprises a first electric bridge, the secondary electric bridge comprises a second electric bridge and a third electric bridge which are the same as the first electric bridge, two ports on the left sides of the second electric bridge and the third electric bridge are respectively connected with a first phase shifter and a second phase shifter, and two ports on the right side of the first electric bridge are respectively connected with the first phase shifter and the second phase shifter through a first single-pole double-throw switch and a second single-pole double-throw switch; the first bridge is an output phase difference adjustable bridge, the first phase shifter and the second phase shifter are adjustable differential phase shifters, the phase difference between output ports can be adjusted at will by utilizing the reconfigurable characteristic of the adjustable bridges and the adjustable phase shifters, and only three bridges are needed, so that the size of a network architecture is reduced, and the complexity of the network architecture is simplified.
Description
Technical Field
The invention belongs to the field of wireless communication, and particularly relates to a miniaturized reconfigurable beam forming network architecture.
Background
The multi-beam antenna mainly comprises an antenna array and a beam forming network, wherein the beam forming network is a key component for scanning antenna beams, the traditional beam forming network comprises Butler Matrix, Nolen Matrix, lens antenna and the like, and has the characteristics of simple structure, low cost and the like, but the traditional passive beam forming network can only generate a plurality of fixed output phase differences, the corresponding array antenna beams are fixed, and can only be switched among a limited number of antenna beams, and the antenna beams cannot be continuously scanned.
Disclosure of Invention
The invention provides a miniaturized reconfigurable beam forming network architecture, which aims to solve the problems and comprises a primary electric bridge and a secondary electric bridge, wherein the primary electric bridge comprises a first electric bridge, the secondary electric bridge comprises a second electric bridge and a third electric bridge which are the same as the first electric bridge, two left ports of the second electric bridge and the third electric bridge are respectively connected with a first phase shifter and a second phase shifter, and two right ports of the first electric bridge are respectively connected with the first phase shifter and the second phase shifter through a first single-pole double-throw switch and a second single-pole double-throw switch; the first bridge is an output phase difference adjustable bridge, and the first phase shifter and the second phase shifter are adjustable differential phase shifters.
Preferably, the movable end of the first single-pole double-throw switch is connected with the upper port on the right side of the first bridge, and the stationary end of the first single-pole double-throw switch is respectively connected with the two ports on the left side of the second bridge.
Preferably, the movable end of the second single-pole double-throw switch is connected with the port below the right side of the first bridge, and the stationary end of the second single-pole double-throw switch is respectively connected with the two ports on the left side of the third bridge.
Preferably, the left upper port of the second bridge and the left lower port of the third bridge are respectively connected with a first phase shifter.
Preferably, a second phase shifter is connected to the lower port on the left side of the second bridge and the upper port on the left side of the third bridge, respectively.
Preferably, the first bridge is a single-band output phase difference adjustable bridge, and the first phase shifter and the second phase shifter are single-band adjustable differential phase shifters.
Preferably, the first bridge is a dual-band output phase difference adjustable bridge, and the first phase shifter and the second phase shifter are dual-band adjustable differential phase shifters.
Preferably, the first single-pole double-throw switch and the second single-pole double-throw switch are both electronic single-pole double-throw switches.
The invention has the following beneficial effects: the small reconfigurable beam forming network architecture utilizes the reconfigurable characteristics of the adjustable bridges and the adjustable phase shifters, the phase difference between the output ports can be adjusted at will, only three bridges are needed, the size of the network architecture is reduced, and the complexity of the network architecture is simplified.
Drawings
FIG. 1 is a schematic diagram of a network architecture according to an embodiment of the present invention;
1-a first bridge; 2-a second bridge; 3-a third bridge; 4-a first single pole double throw switch; 5-second single pole double throw switch.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1, a miniaturized reconfigurable beam forming network architecture includes a primary bridge and a secondary bridge, the primary bridge includes a first bridge 1, the secondary bridge includes a second bridge 2 and a third bridge 3 that are the same as the first bridge 1, two left ports of the second bridge 2 and the third bridge 3 are respectively connected with a first phase shifter and a second phase shifter, two right ports of the first bridge 1 are respectively connected with the first phase shifter and the second phase shifter through a first single-pole double-throw switch 4 and a second single-pole double-throw switch 5; the first bridge 1 is an output phase difference adjustable bridge, and the first phase shifter and the second phase shifter are adjustable differential phase shifters, wherein the phase difference adjustable bridge and the adjustable differential phase shifters are implemented by using the prior art, and are not described in detail.
The description of the orientation of the bridges is defined according to the structure shown in the drawing, the first bridge 1 is located on the left side, the second bridge 2 and the third bridge 3 are located on the right side, and the corresponding upper and lower definitions are also based on this, and each bridge includes an input port, an isolated port, a through port and a coupled port, where the input port and the isolated port are defined with reference to signal input, for example, a signal is input from the upper port on the left side of the first bridge 1, then the lower port on the left side of the first bridge 1 is the isolated port, the upper port on the right side of the first bridge 1 is the through port, the lower port on the right side of the first bridge 1 is the coupled port, that is, both ports on the left side of the first bridge 1 can be used as input ports, and both ports on the right side can be used as output ports, and when a matching load is added to the isolated port, And the single-pole double-throw switch is grounded to reduce noise.
Defining the upper and lower ports on the right side of the second bridge 2 as a first output port and a second output port respectively, and defining the upper and lower ports on the right side of the third bridge 3 as a third output port and a fourth output port respectively; the first phase shifter and the second phase shifter are used as two paths for forming the differential phase shifter, and the second phase shifter is used as the reference of the first phase shifter.
Preferably, the movable end of the first single-pole double-throw switch 4 is connected with the upper port on the right side of the first bridge 1, and the stationary end of the first single-pole double-throw switch 4 is respectively connected with two ports on the left side of the second bridge 2.
Preferably, the movable end of the second single-pole double-throw switch 5 is connected with the lower port on the right side of the first bridge 1, and the stationary end of the second single-pole double-throw switch 5 is respectively connected with the two ports on the left side of the third bridge 3.
Preferably, a first phase shifter is connected to each of the upper left port of the second bridge 2 and the lower left port of the third bridge 3.
Preferably, a second phase shifter is connected to a lower port on the left side of the second bridge 2 and an upper port on the left side of the third bridge 3.
In the beam forming network architecture, the first bridge 1 outputs a phase difference phi, the first phase shifter and the second phase shifter can generate a phase difference of theta output, when a signal is input from the upper port on the left side of the first bridge 1, the first single-pole double-throw switch 4 and the second single-pole double-throw switch 5 are turned on upwards, namely, the signal is respectively connected with a first phase shifter and a second phase shifter, the signal is divided into two paths after passing through a first electric bridge 1, the phase difference generated at the moving ends of two single-pole double-throw switches is phi, the phase difference of the two paths of signals after passing through the first phase shifter and the second phase shifter is phi + theta, the two paths of signals respectively pass through a second electric bridge 2 and a third electric bridge 3, the output signals at the right side of the two electric bridges are output, the relative phase difference of the output signals is 0, phi + theta, 2 phi + theta, and at the moment, as long as the output phase difference theta of the two differential phase shifters is phi, a phase difference of-phi can be generated among the output signals of the four output ports; similarly, when a signal is input from the lower port on the left side of the first bridge 1, the two single-pole double-throw switches are turned on downwards, and a matched load is connected to the upper port on the left side of the first bridge 1, a phase difference of phi is generated between output signals of the four output ports.
Therefore, a 2 x 4 wave beam forming network with continuously adjustable output phase difference is established, the adjusting range of the output phase difference is limited by the adjustable electric bridge and the adjustable differential phase shifter, if the adjustable electric bridge and the adjustable differential phase shifter both have the adjusting range of 0-180 degrees, the output phase difference can realize the full-phase continuously adjustable function of-180 degrees, and compared with the traditional passive wave beam forming network, the network has stronger functions, has wider application range and is beneficial to promoting the development of the field of wireless communication.
Preferably, the first bridge 1 is a single-band output phase difference adjustable bridge, and the first phase shifter and the second phase shifter are single-band adjustable differential phase shifters.
Preferably, the first bridge 1 is a dual-band output phase difference adjustable bridge, and the first phase shifter and the second phase shifter are dual-band adjustable differential phase shifters, and may be in the form of a low-pass filter phase shifter and a high-pass filter phase shifter.
Preferably, the first single-pole double-throw switch 4 and the second single-pole double-throw switch 5 are both electronic single-pole double-throw switches.
The network architecture can be built through a single-frequency-band and double-frequency-band output phase difference bridge, only corresponding phase shifters are needed, the control process is simplified due to the use of the electronic single-pole double-throw switch, the electronic single-pole double-throw switch has the advantage of automatic operation, a controller can be additionally arranged according to a specific use scene, and the electronic single-pole double-throw switch is controlled according to different requirements.
As an expanded implementation, a third bridge may be further added, output ports of the second bridge 2 and the third bridge 3 are used as input ports of the third bridge, the third bridge is connected in the same manner, meanwhile, a phase difference of the first-stage differential phase shifter is set to be 2 times of a phase difference of the output of the adjustable bridge, and a phase difference of the second-stage differential phase shifter is set to be equal to a phase difference of the output of the adjustable bridge, so as to form 8 output ports for connecting an antenna array and enhancing the scanning capability of an antenna beam. By analogy, 2 x 2 can be realizednThe network of (2) is used for feeding the antenna array, but the phase shift amount of the differential phase shifter is required to be larger along with the increase of the network stage number.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A miniaturized reconfigurable beamforming network architecture characterized by: the single-pole double-throw phase shifter comprises a first-pole bridge and a second-pole bridge, wherein the first-pole bridge comprises a first bridge, the second-pole bridge comprises a second bridge and a third bridge which are the same as the first bridge, a first phase shifter and a second phase shifter are respectively connected to two left ports of the second bridge and the third bridge, and two right ports of the first bridge are respectively connected with the first phase shifter and the second phase shifter through a first single-pole double-throw switch and a second single-pole double-throw switch; the first bridge is an output phase difference adjustable bridge, and the first phase shifter and the second phase shifter are adjustable differential phase shifters.
2. The miniaturized reconfigurable beamforming network architecture of claim 1, wherein: the movable end of the first single-pole double-throw switch is connected with the upper port on the right side of the first electric bridge, and the immovable end of the first single-pole double-throw switch is respectively connected with the two ports on the left side of the second electric bridge.
3. The miniaturized reconfigurable beamforming network architecture of claim 2, wherein: the movable end of the second single-pole double-throw switch is connected with the port below the right side of the first electric bridge, and the immovable end of the second single-pole double-throw switch is respectively connected with the two ports on the left side of the third electric bridge.
4. The architecture of claim 1, wherein: and the left upper port of the second electric bridge and the left lower port of the third electric bridge are respectively connected with a first phase shifter.
5. The miniaturized reconfigurable beamforming network architecture of claim 4, wherein: and the lower port on the left side of the second electric bridge and the upper port on the left side of the third electric bridge are respectively connected with a second phase shifter.
6. A miniaturized reconfigurable beamforming network architecture according to any of claims 1-5, characterized in that: the first bridge is a single-frequency-band output phase difference adjustable bridge, and the first phase shifter and the second phase shifter are single-frequency-band adjustable differential phase shifters.
7. A miniaturized reconfigurable beamforming network architecture according to claims 1-5, characterized in that: the first bridge is a double-frequency-band output phase difference adjustable bridge, and the first phase shifter and the second phase shifter are double-frequency-band adjustable differential phase shifters.
8. The miniaturized reconfigurable beamforming network architecture of claim 1, wherein: the first single-pole double-throw switch and the second single-pole double-throw switch are both electronic single-pole double-throw switches.
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Cited By (2)
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| CN113809552A (en) * | 2021-08-31 | 2021-12-17 | 华南理工大学 | Continuously adjustable 3 x 3Nolen matrix feed network |
| CN115458891A (en) * | 2022-09-01 | 2022-12-09 | 成都众志天成科技有限公司 | Planar microstrip sum-difference network |
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| CN115458891A (en) * | 2022-09-01 | 2022-12-09 | 成都众志天成科技有限公司 | Planar microstrip sum-difference network |
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