Universal double-frequency feed source

Abstract

The utility model discloses a universal double-frequency feed source. The universal double-frequency feed source comprises a feed source waveguide, a first Y-shaped power divider, a second Y-shaped power divider, a polarization rotator, an orthogonal mode coupler and a transition waveguide, one end of the feed source waveguide is used for signal feed-in, and the other end of the feed source waveguide is connected with a first waveguide arm, a second waveguide arm, a third waveguide arm and a fourth waveguide arm; two input ends of the first Y-shaped power divider are connected with the first waveguide arm and the second waveguide arm one by one; two input ends of the second Y-shaped power divider are connected with the third waveguide arm and the fourth waveguide arm one by one; the polarization rotator is connected with the output end of the first Y-type power divider; the first input end of the orthogonal mode coupler is connected with the output end of the second Y-type power divider, and the second input end of the orthogonal mode coupler is connected with the output end of the polarization rotator; the transition waveguide is connected with the feed source waveguide; through the above structure, the feed requirement of a single-polarization and / or dual-polarization microwave antenna can be met, the return loss is low, and the use requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to microwave antenna technical field, especially in general type double -frenquency feed source. BACKGROUND

[0002] In communication system, in order to reduce the space occupied on the tower, usually will use double -frenquency antenna or multiple frequency antenna, so relative to single -frenquency antenna, both can improve the utilization of space on the tower, and still can save a or multiple antenna, like this, the cost of antenna is reduced, and in the process of designing microwave double -frenquency antenna, in order to isolate two frequency band signals, need to design the feed network for double -frenquency antenna, and then realize the design requirement of double -frenquency dual -polarization antenna, but some microwave antennas are single -polarization, and some are dual -polarization, the existing double -frenquency feed source is difficult to meet the antenna demand of single -polarization and dual -polarization simultaneously, leading to poor universality of feed source, therefore, there is an urgent need for a general type double -frenquency feed source to solve the above problems. SUMMARY

[0003] The utility model discloses at least one of the technical problems existing in the prior art is solved, and for this purpose, the utility model provides a general type double -frenquency feed source.

[0004] The technical scheme adopted by one embodiment of the utility model to solve its technical problem is as follows: a general type double -frenquency feed source, including feed source waveguide, first Y type power divider, second Y type power divider, polarization rotator, quadrature mode coupler and transition waveguide,

[0005] One end of the feed source waveguide is used for signal feed, and the other end of the feed source waveguide is connected with first waveguide arm, second waveguide arm, third waveguide arm and fourth waveguide arm,

[0006] Two input ends of the first Y type power divider are connected with the first waveguide arm and the second waveguide arm one by one,

[0007] Two input ends of the second Y type power divider are connected with the third waveguide arm and the fourth waveguide arm one by one,

[0008] The polarization rotator is connected with the output end of the first Y type power divider,

[0009] The first input end of the quadrature mode coupler is connected with the output end of the second Y type power divider, and the second input end is connected with the output end of the polarization rotator,

[0010] The transition waveguide is connected with the feed source waveguide.

[0011] As one of the preferred embodiments of the utility model, a general dual -frequency feed source still includes first layer board, second layer board and third layer board of sequential stacking, first layer board constructs the first waveguide arm, the second waveguide arm, the third waveguide arm and the fourth waveguide arm on the feed source waveguide, the first Y type power divider, the second Y type power divider, the polarization rotator and the orthogonal mode coupler are constructed between second layer board and third layer board, the transition waveguide is constructed on second layer board and / or third layer board.

[0012] As one of the preferred embodiments of the utility model, the first layer board is provided with the first sealing groove that surrounds the outside of the feed source waveguide, the first waveguide arm, the second waveguide arm, the third waveboard arm and the fourth waveguide arm, and further includes the first sealing ring arranged in the first sealing groove and abutting against the second layer board.

[0013] As one of the preferred embodiments of the utility model, the second layer board is provided with the second sealing groove that surrounds the outside of the first Y type power divider, the second Y type power divider, the polarization rotator, the orthogonal mode coupler and the transition waveguide, and further includes the second sealing ring arranged in the second sealing groove and abutting against the third layer board.

[0014] As one of the preferred embodiments of the utility model, the first layer board is connected with the second layer board through the first bolt connecting structure.

[0015] As one of the preferred embodiments of the utility model, the second layer board is connected with the third layer board through the second bolt connecting structure.

[0016] The utility model discloses the beneficial effects of a kind of general dual -frequency feed source, including feed source waveguide, first Y type power divider, second Y type power divider, polarization rotator, orthogonal mode coupler and transition waveguide;The one end of feed source waveguide is used for signal feed-in, and the other end of feed source waveguide is connected with first waveguide arm, second waveguide arm, third waveguide arm and fourth waveguide arm;Two inputs of first Y type power divider are connected with first waveguide arm and second waveguide arm one by one;Two inputs of second Y type power divider are connected with third waveguide arm and fourth waveguide arm one by one;Polarization rotator is connected with the output end of first Y type power divider;The first input end of orthogonal mode coupler is connected with the output end of second Y type power divider, and the second input end is connected with the output end of polarization rotator;Transition waveguide is connected with feed source waveguide;Through above-mentioned structure, it can adapt to the microwave antenna feed demand of single polarization and / or dual polarization, and return loss is lower, satisfy use demand. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0018] Figure 1 It is a first structure schematic view of a kind of general dual -frequency feed source;

[0019] Figure 2 A second structure diagram of a general dual-frequency feed source;

[0020] Figure 3 An exploded view of a general dual-frequency feed source;

[0021] Figure 4 A structure diagram of a first layer plate;

[0022] Figure 5 A structure diagram of a second layer plate;

[0023] Figure 6 A first simulation model diagram of a general dual-frequency feed source;

[0024] Figure 7 A second simulation model diagram of a general dual-frequency feed source. DETAILED DESCRIPTION

[0025] This part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0026] In the description of the present application, the meaning of multiple is more than two, greater than, less than, more than, etc. is not included in the number, above, below, etc. is included in the number. If there is a description of the first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0027] In the description of the present application, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0028] In the present application, unless otherwise explicitly limited, the words "set", "install", "connect" and the like should be broadly understood, for example, they can be directly connected, or indirectly connected through an intermediate medium; can be fixedly connected, or can be detachably connected, or can be integrally formed; can be mechanically connected; can be the internal communication or interaction relationship of two elements. The skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0029] Referring to Figures 1 to 7 A universal dual-frequency feed source comprises a feed waveguide 10, a first Y-type power divider 21, a second Y-type power divider 22, a polarization rotator 30, a quadrature mode coupler 40 and a transition waveguide 50.

[0030] One end of the feed waveguide 10 is used for signal feeding, and the other end of the feed waveguide 10 is connected with a first waveguide arm 61, a second waveguide arm 62, a third waveguide arm 63 and a fourth waveguide arm 64.

[0031] Two input ends of the first Y-type power divider 21 are connected with the first waveguide arm 61 and the second waveguide arm 62 respectively.

[0032] Two input ends of the second Y-type power divider 22 are connected with the third waveguide arm 63 and the fourth waveguide arm 64 respectively.

[0033] The polarization rotator 30 is connected with an output end of the first Y-type power divider 21.

[0034] A first input end of the quadrature mode coupler 40 is connected with an output end of the second Y-type power divider 22, and a second input end is connected with an output end of the polarization rotator 30.

[0035] The transition waveguide 50 is connected with the feed waveguide 10.

[0036] In the utility model, the universal dual-frequency feed source comprises first layer plate 71, second layer plate 72 and third layer plate 73 that are stacked in sequence, the first layer plate 71 is structured with the feed waveguide 10, the first waveguide arm 61, the second waveguide arm 62, the third waveguide arm 63 and the fourth waveguide arm 64, the first Y-type power divider 21, the second Y-type power divider 22, the polarization rotator 30 and the quadrature mode coupler 40 are structured between the second layer plate 72 and the third layer plate 73, and the transition waveguide 50 is structured on the second layer plate 72 and / or the third layer plate 73.

[0037] The coaxial waveguide cross feed structure of the feed waveguide 10: circularly polarized signals (two circular waveguide TE11 main modes of polarization degeneration, perpendicular to each other) received from the reflector antenna feed are input into the dual-frequency feed network through the feed waveguide 10, and each main mode is separated into two linearly polarized waves with equal amplitude and a phase difference of 180 degrees to the first waveguide arm 61, the second waveguide arm 62, the third waveguide arm 63 and the fourth waveguide arm 64 to propagate in the rectangular waveguide main mode TE10; the first Y-type power divider 21 and the second Y-type power divider 22: two linearly polarized waves with equal amplitude and a phase difference of 180 degrees separated from the same main mode output by the feed waveguide 10 are synthesized; the polarization rotator 30: the polarization signal output by the first Y-type power divider 21 is converted into a polarization signal perpendicular thereto, and the polarization signal output by the second Y-type power divider 22 is perpendicular to each other; the quadrature mode coupler 40: the independent signals output by the polarization rotator 30 and the independent signals output by the second Y-type power divider 22 are synthesized in the form of circular waveguide main mode from the circular waveguide to realize good matching of the electrical port; the transition waveguide 50: the single polarization signal output by the feed waveguide 10 is output.

[0038] The universal dual-frequency feed can be connected with different microwave devices, such as the quadrature mode coupler 40 or the transition waveguide 50, in the 32GHz (31.8-33.4GHz) and 80GHz (71GHz-86GHz) frequency bands, so as to change the polarization characteristics of the microwave antenna - the single polarization antenna uses the transition waveguide 50, and the dual polarization antenna uses the quadrature mode coupler 40, and the polarization characteristics can be customized according to the needs of users to form 32GHz single polarization+80GHz single polarization, 32GHz dual polarization+80GHz dual polarization, 32GHz single polarization+80GHz dual polarization and 32GHz dual polarization+80GHz single polarization, a total of four polarization characteristic combinations; in the simulation results, under the 32GHz frequency band (31.8-33.4GHz), the return loss is below -21dB, far exceeding the return loss index (-10dB); the universal dual-frequency feed has the advantages that the above structure can adapt to the microwave antenna feed demand of single polarization and / or dual polarization, the return loss is low, and the use requirement is met.

[0039] With reference to Figures 3 to 5 The first layer plate 71 is provided with a first sealing groove 81 surrounding the outer sides of the feed waveguide 10, the first waveguide arm 61, the second waveguide arm 62, the third waveguide arm 63 and the fourth waveguide arm 64, and further comprises a first sealing ring arranged in the first sealing groove 81 and abutting against the second layer plate 72; the second layer plate 72 is provided with a second sealing groove 82 surrounding the outer sides of the first Y-type power divider 21, the second Y-type power divider 22, the polarization rotator 30, the quadrature mode coupler 40 and the transition waveguide 50, and further comprises a second sealing ring arranged in the second sealing groove 82 and abutting against the third layer plate 73; the signal leakage of the signal channel is avoided, and water is prevented.

[0040] With reference to Figures 1 to 5 The first layer plate 71 is connected with the second layer plate 72 through the first bolt connecting structure 91; and the second layer plate 72 is connected with the third layer plate 73 through the second bolt connecting structure 92.

[0041] Of course, the utility model is not limited to the above-mentioned embodiment, and the skilled person in the art can also make equivalent transformation or replacement without departing from the spirit of the utility model, and these equivalent transformations and replacements are all included in the range defined by the claims of the application.

Claims

1. A universal dual frequency feed, characterized by: The application relates to a waveguide feed device, which comprises a feed waveguide (10), a first Y-type power divider (21), a second Y-type power divider (22), a polarization rotator (30), a quadrature mode coupler (40) and a transition waveguide (50). One end of the feed waveguide (10) is used for signal feeding, and the other end of the feed waveguide (10) is connected with a first waveguide arm (61), a second waveguide arm (62), a third waveguide arm (63) and a fourth waveguide arm (64). Two input ends of the first Y-type power divider (21) are connected with the first waveguide arm (61) and the second waveguide arm (62) respectively. Two input ends of the second Y-type power divider (22) are connected with the third waveguide arm (63) and the fourth waveguide arm (64) respectively. The polarization rotator (30) is connected with the output end of the first Y-type power divider (21). A first input end of the quadrature mode coupler (40) is connected with the output end of the second Y-type power divider (22), and a second input end is connected with the output end of the polarization rotator (30). The transition waveguide (50) is connected with the feed waveguide (10).

2. A dual-band feed according to claim 1, characterized in that: The first layer plate (71) is sequentially stacked with a second layer plate (72) and a third layer plate (73), the feed waveguide (10), the first waveguide arm (61), the second waveguide arm (62), the third waveguide arm (63) and the fourth waveguide arm (64) are arranged on the first layer plate (71), the first Y-type power divider (21), the second Y-type power divider (22), the polarization rotator (30) and the quadrature mode coupler (40) are arranged between the second layer plate (72) and the third layer plate (73), and the transition waveguide (50) is arranged on the second layer plate (72) and / or the third layer plate (73).

3. A dual-band feed according to claim 2, wherein: A first sealing groove (81) is arranged on the first layer plate (71) and surrounds the outer sides of the feed waveguide (10), the first waveguide arm (61), the second waveguide arm (62), the third waveguide arm (63) and the fourth waveguide arm (64), and a first sealing ring is arranged in the first sealing groove (81) and abuts against the second layer plate (72).

4. A dual-band feed according to claim 2, wherein: A second sealing groove (82) is arranged on the second layer plate (72) and surrounds the outer sides of the first Y-type power divider (21), the second Y-type power divider (22), the polarization rotator (30), the quadrature mode coupler (40) and the transition waveguide (50), and a second sealing ring is arranged in the second sealing groove (82) and abuts against the third layer plate (73).

5. A dual-band feed according to claim 2, wherein: The first layer plate (71) is connected with the second layer plate (72) through a first bolt connecting structure (91).

6. A dual-band feed according to claim 2, wherein: The second layer plate (72) is connected with the third layer plate (73) through a second bolt connecting structure (92).

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