Partition plate circular polarizer and transceiver all-in-one machine

Abstract

The embodiment of the utility model provides a partition plate circular polarizer and a transceiver all-in-one machine, the partition plate circular polarizer comprises a connector, a device chamber serving as a transmission channel is arranged in the connector, a first end of the device chamber is used for forming a square waveguide and transmitting electromagnetic waves, and a second end of the device chamber is used for forming a second waveguide; a first triangular inclined block and a second triangular inclined block are arranged at the first end of the device cavity; the utility model relates to the technical field of feed sources, solves the problem that the application requirements of a transceiver all-in-one machine are difficult to meet due to the fact that the circular polarization axial ratio characteristic of a circular polarizer in the related technology is poor, and can realize the separation of left-handed and right-handed dual circular polarization without additionally arranging an orthogonal mode coupler, thereby improving the transmission efficiency of the transceiver all-in-one machine and improving the transmission efficiency of the transceiver all-in-one machine. And the relative bandwidth is relatively wide, the requirements of the transceiver on broadband and low axial ratio can be met, and the polarizer has relatively good axial ratio characteristic.

Description

Technical Field

[0001] The present application relates to the field of feed technology, and in particular to a baffle circular polarizer and a transceiver. Background Art

[0002] With the rapid development of satellite communications, in order to adapt to more and more communication, monitoring, remote sensing and other application requirements, satellite communication antennas need to achieve dual polarization, such as having both vertical polarization and horizontal polarization, or left-hand circular polarization and right-hand circular polarization functions. Among them, the circular polarizer is the key component to achieve the above functions.

[0003] Moreover, with the development of broadband satellite communication technology, the Ka-band antenna feed system designs the transmitting module and the receiving module into an integrated transceiver, and in order to adapt to different bandwidth requirements in multiple application scenarios and meet lower axial ratios, the circular polarization axial ratio characteristics need to reach better circular polarization standards. However, the circular polarizer in the related technology is difficult to meet the broadband and low axial ratio requirements of the integrated transceiver in satellite communication, and the circular polarization axial ratio characteristics of its polarizer are also difficult to reach better circular polarization standards. Utility Model Content

[0004] The present application provides a partition circular polarizer and a transceiver, which solves the problem in the related art that the circular polarization axial ratio characteristics of the circular polarizer are poor and difficult to meet the application requirements of the transceiver. The present solution can achieve the separation of left-hand and right-hand dual circular polarizations without adding an orthogonal mode coupler, and has a relatively wide bandwidth, which can adapt to the requirements of the transceiver for broadband and low axial ratio, and has a good polarizer axial ratio characteristic.

[0005] In a first aspect, the present application provides a baffle circular polarizer, which includes a connector and a baffle.

[0006] Among them, a device chamber as a transmission channel is arranged inside the connector, the first end of the device chamber is used to form a square waveguide and transmit electromagnetic waves, and a first triangular bevel block and a second triangular bevel block are arranged at the first end of the device chamber, and the first triangular bevel block and the second triangular bevel block are respectively arranged obliquely symmetrically in the ports corresponding to the first end of the device chamber;

[0007] The partition is arranged in the device chamber, and is used to separate the square waveguide at the second end of the device chamber to form two rectangular waveguides of the same size. The partition is provided with multiple steps, and the heights of the multiple steps increase gradually from the first end to the second end of the device chamber.

[0008] In a second aspect, the present application also provides a transceiver, which includes the above-mentioned baffle circular polarizer.

[0009] The baffle circular polarizer of the present application is configured with a baffle, a first triangular bevel block and a second triangular bevel block. The baffle circular polarizer can enable the incident signal to generate the required circularly polarized electromagnetic wave after passing through the entire baffle, and ensure that the input port has good matching characteristics and high isolation between the input ports, thereby meeting the application requirements of bandwidth and low axial ratio in the working band. At the same time, the axial ratio characteristics can also achieve a good circular polarization standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic diagram of the structure of a corrugated speaker provided in an embodiment of the present application;

[0011] Figure 2 for Figure 1 The structure diagram of the corrugated speaker shown in another perspective;

[0012] Figure 3 A schematic diagram of the internal space of a device chamber provided in one embodiment of the present application;

[0013] Figure 4 A schematic diagram of a partition structure provided in one embodiment of the present application.

[0014] Reference numerals:

[0015] The connector 110 , the device chamber 111 , the partition 112 , the first triangular bevel block 113 , the second triangular bevel block 114 , and the fixing seat 120 . DETAILED DESCRIPTION

[0016] The embodiments of the present application are further described in detail below in conjunction with the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are only used to explain the embodiments of the present application, rather than to limit the embodiments of the present application. It should also be noted that, for ease of description, only the parts related to the embodiments of the present application rather than all structures are shown in the accompanying drawings, and those skilled in the art should be able to think of it after reading the specification of this application that as long as the technical features do not contradict each other, any combination of the technical features can constitute an optional implementation method.

[0017] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable when appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally a class, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally represents that the objects associated before and after are in an "or" relationship. In the description of the present application, "multiple" means two or more, and "several" means one or more.

[0018] In recent years, my country has made great progress in the field of satellite communications. In order to meet the needs of more and more communication, monitoring, remote sensing and other application fields, satellite communication antennas are required to be able to achieve dual polarization at the same time, such as vertical / horizontal polarization, or left-hand and right-hand circular polarization. For this, a diaphragm circular polarizer is usually used as a feed source to meet the above requirements.

[0019] As an important device in satellite communications, in related technologies, in order to adapt to the Ka-band, the transceiver using the baffle circular polarizer needs to adapt to the bandwidth requirements in different scenarios. Although the traditional baffle circular polarizer can ensure phase consistency and its waveguide structure is simple and compact, when the traditional baffle circular polarizer works in the Ka-band, the transceiver using the baffle circular polarizer is difficult to meet the target requirements in terms of bandwidth and low axial ratio.

[0020] In this regard, the present application provides a baffle circular polarizer, wherein a device chamber serving as a transmission channel is provided inside a connector of the baffle circular polarizer, and the device chamber contains a hollow square channel, which is used to serve as a square waveguide and transmit electromagnetic waves. A first triangular bevel block and a second triangular bevel block are provided at the first end of the device chamber, and the first triangular bevel block and the second triangular bevel block are respectively and obliquely symmetrically provided in the ports at the first end of the device chamber, and the first triangular bevel block and the second triangular bevel block are used to adjust the phase shift angle of the baffle circular polarizer.

[0021] In addition, a partition is also provided in the device chamber. It can be understood that the partition extends a certain distance along the direction from the second end to the first end of the device chamber, so as to separate the square waveguide at the second end of the device chamber to form two rectangular waveguides of the same size. Moreover, a plurality of steps are provided on the partition, and correspondingly, the height of each step increases step by step along the direction from the first end to the second end of the device chamber. It can be imagined that the height of each step on the partition increases step by step until the partition finally connects the opposite sides of the device chamber, so that when looking from the second end of the device chamber to the first end, the partition divides the device chamber into two rectangular waveguides.

[0022] It can be understood that the baffle circular polarizer of the present scheme inserts a baffle with multiple steps in the square waveguide to achieve circular polarization, so that by setting steps of corresponding length and height, the phase shift and division effect can be achieved to achieve good indicators. Its phase shift mechanism is: the TE10 mode power input from the rectangular waveguide is divided into two after passing through the step, and converted into two orthogonal TE01 and TE10 modes in the shared square waveguide. For the TE10 mode, its transmission constant from the rectangular waveguide to the baffle area is almost unchanged; while for the TE01 mode, the baffle area can be regarded as a fin-shaped or ridge-shaped waveguide, and its propagation constant is related to the height and length of the baffle step. In order to better meet the circular polarization standard of the Ka band, the baffle circular polarizer of the present scheme further finely adjusts the phase shift angle by adding the structure of the first triangular bevel block and the second triangular bevel block, so that its axial ratio characteristics can meet better circular polarization standards.

[0023] In order to better show the internal space of the device chamber of the partition circular polarizer, Figure 1 A schematic diagram of the internal space of the device chamber 111 provided in one embodiment of the present application is shown in FIG. Figure 1 As shown, the two obliquely symmetrical diagonal angles of the square formed at the first end of the device chamber 111 are set as bevel angles, that is, by setting the corresponding first triangular bevel block 113 and the second triangular bevel block 114, the internal space of the device chamber 111 is designed with a bevel angle at the first end. In addition, the partition 112 is provided with multiple steps from the first end to the second end, such as 5 steps, each step is gradually increased, and the partition 112 reaches the maximum height of the internal space of the device chamber 111 at the second end of the device chamber 111. It is worth noting that Figure 1 In order to better show the internal space of the device chamber 111, the first triangular inclined block 113, the second triangular inclined block 114 and the partition 112 are Figure 1 Its position in the internal space of the device chamber 111 is indicated by a dotted line.

[0024] It can be seen from the above scheme that the baffle circular polarizer of this scheme not only meets the requirements of low reflection coefficient and high isolation between ports, but also takes into account the axial ratio characteristics, so that the baffle circular polarizer gets rid of the mutual constraints between impedance performance and axial ratio performance. Through the setting of the baffle, the first triangular bevel block and the second triangular bevel block, the baffle circular polarizer can make the incident signal generate the required circularly polarized electromagnetic wave after passing through the entire baffle, and ensure that the input port has good matching characteristics and high isolation between input ports, thereby meeting the application requirements of bandwidth and low axial ratio in the working band, and the axial ratio characteristics can also achieve better circular polarization standards.

[0025] In some embodiments, for the size of the square waveguide, the main mode corresponding to the square waveguide formed at the first end of the device cavity is the TE10 mode. Accordingly, according to the waveguide theory, the cutoff wavelength of the square waveguide with a side length of a is as follows:

[0026]

[0027] Where m and n correspond to the number of changes of the electric field in different directions in the distribution pattern of the electric field on the waveguide cross section, such as 1 and 0 in the TE10 mode, and λ c It can be imagined that, in the TE10 mode, the side length of the square waveguide is half of the cutoff wavelength, that is, the side length of the square waveguide is related to the working frequency band of the partition circular polarizer.

[0028] In one embodiment, the operating band of the partition circular polarizer is the Ka band, and correspondingly, the operating frequency of the Ka band is: downlink frequency 17.7GHz-21.2GHz, uplink frequency 27.5GHz-31GHz. Furthermore, the corresponding operating wavelength λ is: 9.7<λ<17.0mm, so the side length of the square waveguide formed at the first end of the device cavity is greater than or equal to 8.5mm. By setting a square waveguide with a corresponding side length, the partition circular polarizer can adapt to the Ka band to effectively realize electromagnetic wave transmission in this working band.

[0029] In some embodiments, the partition of the partition circular polarizer is located in the middle of the port at the second end of the device chamber, and the thickness of the partition is less than or equal to 1 mm. If the thickness of the partition is set to 1 mm, accordingly, the thicker partition can reduce the risk of deformation during the processing process, help improve mechanical strength and enhance resistance to temperature changes.

[0030] In some embodiments, the first triangular bevel block and the second triangular bevel block are respectively arranged at two obliquely symmetrical internal angles in the port at the first end of the device chamber. It can be imagined that the cross section of the square waveguide is a square, and accordingly, there are two pairs of obliquely symmetrical internal angles on it, and the first triangular bevel block and the second triangular bevel block are respectively arranged at any pair of the two pairs of obliquely symmetrical internal angles. It should be noted that, in one embodiment, the cross section of the first triangular bevel block is the same as the cross section of the second triangular bevel block, and both are isosceles right triangles.

[0031] Therefore, the baffle circular polarizer adjusts the phase shift angle of the electromagnetic wave by arranging triangular oblique blocks at two obliquely symmetrical inner angles, which helps to improve the axial ratio characteristics of the baffle circular polarizer.

[0032] Figure 2 This is a schematic diagram of the structure of a baffle circular polarizer provided in an embodiment of the present application. Figure 3 for Figure 2 The structure diagram of the corrugated speaker shown in FIG. Figure 2 and Figure 3 As shown, the circular polarizer includes a connector 110 and a fixing seat 120, and the fixing seat 120 is arranged at the first end of the connector 110 and is used to connect the partition circular polarizer with other devices. A device chamber 111 is arranged inside the connector 110, and a triangular oblique block is arranged at the first end of the device chamber 111. For example, the first triangular oblique block 113 and the second triangular oblique block 114 are respectively arranged obliquely and symmetrically at the first end of the device chamber 111. It can be imagined that in some embodiments, a device with a square channel formed inside and a beveled angle can be arranged at the first end of the device chamber 111, so as to achieve the same effect as the first triangular oblique block 113 and the second triangular oblique block 114.

[0033] A partition 112 is arranged in the device chamber 111 of the connector 110, wherein the partition 112 separates the square waveguide into two rectangular waveguides of the same size at the second end of the device chamber 111, and a plurality of steps are arranged on the partition 112, and the height of each step increases successively from the first end to the second end of the device chamber 111.

[0034] Therefore, through the setting of the partition, the first triangular bevel block and the second triangular bevel block, the partition circular polarizer can make the incident signal generate the required circularly polarized electromagnetic wave after passing through the entire partition, and ensure that the input port has good matching characteristics and high isolation between input ports, thereby meeting the application requirements of bandwidth and low axial ratio in the working band, and the axial ratio characteristics can also achieve better circular polarization standards.

[0035] In some embodiments, the partition is provided with 5 steps, and the length and height of each step are related to the working wavelength corresponding to the partition circular polarizer. It can be understood that by setting the length and height of each step on the partition so that the length and height of each step are multiples of the working wavelength, the incident signal generates the required circularly polarized electromagnetic wave after passing through the entire partition.

[0036] Figure 4 A schematic diagram of the partition structure provided for an embodiment of the present application. In one embodiment, the partition is provided with 5 steps, which are, from low to high, the first step, the second step, the third step, the fourth step and the fifth step, and the length and height of each step are related to the working wavelength.

[0037] Specifically, the length L1 of the first step is 0.1λ, the length L2 of the second step is 0.35λ, the length L3 of the third step is 0.38λ, the length L4 of the fourth step is 0.37λ, and the length L5 of the fifth step is 0.28λ, where λ is the corresponding operating wavelength. In addition, the height S1 of the first step is 0.2λ, the height S2 of the second step is 0.45λ, the height S3 of the third step is 0.57λ, the height S4 of the fourth step is 0.69λ, and the height S5 of the fifth step is 0.82λ.

[0038] In one embodiment, the ports and partitions of the device chamber retain their edges and corners, that is, the inside of the square waveguide and the rectangular waveguide are not chamfered, such as the edges of the square waveguide and the edges of the partition, etc., which retain their edges and corners, thereby retaining the continuity of the waveguide, so that the transmission channel for transmitting electromagnetic waves can have good performance.

[0039] The present application also provides a transceiver, which includes the above-mentioned corrugated speaker, and then transmits and receives electromagnetic wave signals propagating in the high frequency band through the corrugated speaker, so that the transceiver has good performance when working in the high frequency band. The corrugated speaker can meet the design requirements of a large opening angle, and the corrugated speaker has excellent performance in the equalization performance of the main polarization pattern, the voltage standing wave ratio characteristics, and the cross-polarization characteristics to meet the performance requirements of the high frequency band.

[0040] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0041] Note that the above are only preferred embodiments of the present application and the technical principles used. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A partition circular polarizer, characterized in that: include: A connector, wherein a device chamber serving as a transmission channel is disposed inside the connector, wherein a first end of the device chamber is used to form a square waveguide and transmit electromagnetic waves, and a first triangular bevel block and a second triangular bevel block are disposed at the first end of the device chamber, and the first triangular bevel block and the second triangular bevel block are respectively disposed obliquely symmetrically in ports corresponding to the first end of the device chamber; A partition is arranged in the device chamber, and the partition is used to separate the square waveguide at the second end of the device chamber to form two rectangular waveguides of the same size, and a plurality of steps are arranged on the partition, and the height of each step increases successively from the first end to the second end of the device chamber.

2. The partition circular polarizer according to claim 1, characterized in that: The main mode corresponding to the square waveguide formed at the first end of the device cavity is the TE10 mode, and the side length of the square waveguide corresponds to the working band of the partition circular polarizer.

3. The partition circular polarizer according to claim 2, characterized in that: The operating band of the partition circular polarizer is the Ka band, and the side length of the square waveguide formed at the first end of the device cavity is greater than 8.5 mm.

4. The partition circular polarizer according to claim 1, characterized in that: The partition is located in the middle of the port of the second end of the device chamber, and the thickness of the partition is less than or equal to 1 mm.

5. The partition circular polarizer according to claim 1, characterized in that: The partition is provided with 5 steps, and the length and height of each step are associated with the working wavelength corresponding to the partition circular polarizer.

6. The partition circular polarizer according to claim 5, characterized in that: The lengths of the first to fifth steps are 0.1λ, 0.35λ, 0.38λ, 0.37λ and 0.28λ respectively; The height of each step is lower than the side length of the square waveguide, and the heights of the first step to the fifth step are 0.2λ, 0.45λ, 0.57λ, 0.69λ and 0.82λ respectively; Wherein, λ represents the operating wavelength.

7. The baffle circular polarizer according to claim 1, characterized in that: The first triangular oblique block and the second triangular oblique block are respectively arranged at two obliquely symmetrical inner corners of a port corresponding to the first end of the device chamber.

8. The partition circular polarizer according to claim 7, characterized in that: The cross-section of the first triangular oblique block and the cross-section of the second triangular oblique block are both isosceles right triangles.

9. The baffle circular polarizer according to any one of claims 1 to 8, characterized in that: The port of the device chamber and the partition both retain edges and corners.

10. A transceiver, characterized in that: Comprising a baffle circular polarizer as described in any one of claims 1-9.

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