CN219086234U

CN219086234U - Microwave antenna

Info

Publication number: CN219086234U
Application number: CN202222762452.6U
Authority: CN
Inventors: 张铁军
Original assignee: Shenzhen Mobi Network Communication Co ltd; Mobi Antenna Technologies Shenzhen Co Ltd; Mobi Technology Xian Co Ltd; Mobi Technology Shenzhen Co Ltd; Xian Mobi Antenna Technology Engineering Co Ltd; Mobi Telecommunications Technologies Jian Co Ltd
Current assignee: Shenzhen Mobi Network Communication Co ltd; Mobi Antenna Technologies Shenzhen Co Ltd; Mobi Technology Xian Co Ltd; Mobi Technology Shenzhen Co Ltd; Xian Mobi Antenna Technology Engineering Co Ltd; Mobi Telecommunications Technologies Jian Co Ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-05-26
Anticipated expiration: 2032-10-19

Abstract

The utility model provides a microwave antenna, which comprises a high-frequency port connector, a low-frequency port connector, a main reflecting surface, a rectangular outlet broadband feed source arranged at the central position of the main reflecting surface, an ODU mounting plate fixed on one side of the main reflecting surface, and a broadband waveguide duplexer fixedly arranged on one side of the ODU mounting plate, which is far away from the main reflecting surface, wherein the broadband waveguide duplexer comprises a public port, a high-frequency port and a low-frequency port, the public port is in butt joint with the rectangular outlet broadband feed source, the high-frequency port is connected with the high-frequency port connector, the low-frequency port is connected with the low-frequency port connector, the ODU mounting plate is provided with a first mounting hole, and the first mounting hole is used for connecting the microwave antenna with external ODU equipment; through the design, the effect of multi-frequency communication can be realized by using the direct-buckling type mounting mode of the ODU equipment by two adjacent frequency bands, the components such as a rectangular soft waveguide and a separated mounting bracket are omitted, the cost is reduced, and the integration level of an antenna system is enhanced.

Description

Microwave antenna

Technical Field

The utility model belongs to the field of communication, and particularly relates to a microwave antenna.

Background

Microwave communication refers to communication by using microwave signals with frequencies between 300MHz and 3000GHz, and microwave antennas are key components for performing microwave communication. In practical application, the microwave antenna has a separated application scene, namely, the microwave antenna and the ODU equipment are connected by using a rectangular soft waveguide; meanwhile, the method has the application scene of directly connecting the ODU equipment to the antenna.

With the development of microwave communication, single-frequency-band microwave communication cannot meet the market demand, and various forms of dual-frequency or multi-frequency microwave communication are developed on the market, wherein a dual-frequency microwave antenna generally refers to that an E-band frequency band and a conventional frequency band share a reflecting surface, and a multi-frequency microwave antenna refers to that a high frequency band and a low frequency band in the conventional frequency band share a reflecting surface, however, the two frequency bands are at least doubled in difference between each other; in practical application, on one hand, it is hoped that the adjacent frequency bands such as W6G, W7G, 13G and 15G can share a reflecting surface to achieve the effect of microwave communication in the adjacent frequency bands, and on the other hand, because the separate installation of the antenna needs a rectangular soft waveguide, a separate installation bracket and other parts, the cost is higher, therefore, it is hoped that the adjacent frequency band microwave antenna is in direct buckling installation, and the existing microwave antenna cannot meet the practical requirement.

Disclosure of Invention

The technical aim of the utility model is to provide a microwave antenna, which aims to solve the technical problems that adjacent frequency bands cannot share a reflecting surface and the antennas for adjacent frequency band microwave communication can not be used for direct buckling application in the prior art.

In order to solve the technical problems, the microwave antenna comprises a high-frequency port connector, a low-frequency port connector, a main reflecting surface, a rectangular outlet broadband feed source arranged at the center of the main reflecting surface, an ODU mounting plate fixed on one side of the main reflecting surface, and a broadband waveguide duplexer fixedly arranged on one side of the ODU mounting plate, which is far away from the main reflecting surface, wherein the broadband waveguide duplexer comprises a public port, a high-frequency port and a low-frequency port, the public port is in butt joint with the rectangular outlet broadband feed source, the high-frequency port is connected with the high-frequency port connector, the low-frequency port is connected with the low-frequency port connector, and the ODU mounting plate is provided with a first mounting hole for connecting the microwave antenna with external ODU equipment.

Further, the broadband waveguide duplexer includes a three-port microwave device, the common port is located at a center position of the three-port microwave device, which is close to one side of the ODU mounting board, and the high-frequency port and the low-frequency port are located at one side of the three-port microwave device, which is far away from the ODU mounting board, and are symmetrically arranged with the common port as a center.

Further, the microwave antenna further comprises a central back plate fixedly connected between the main reflecting surface and the ODU mounting plate, the first mounting hole is formed in one side, facing away from the central back plate, of the ODU mounting plate, the central back plate is provided with a second mounting hole, and the second mounting hole is used for fixedly mounting the microwave antenna at a preset position.

Further, the central back plate comprises a plate-shaped structure and a circular ring structure, the plate-shaped structure and the circular ring structure are integrally connected, the circular ring structure is provided with a first central hole, the ODU mounting plate is provided with a second central hole, and the first central hole, the second central hole and the main reflecting surface are on the same central line; the rectangular outlet broadband feed source sequentially passes through the first central hole, the second central hole and is in butt joint with the public port.

Further, the broadband moment export feed source comprises a broadband splash plate medium, a cylindrical waveguide and a broadband moment export feed source connecting disc which are coaxially arranged in sequence from the top to the bottom, the broadband moment export feed source connecting disc is embedded in the central position of the reflecting surface, and the broadband moment export feed source is coaxially arranged at the bottom of the moment export feed source connecting disc.

Further, the broadband feed source of the rectangular outlet further comprises a rectangular waveguide outlet which is arranged in the broadband circular-rectangular transformation, the common port and the rectangular waveguide outlet are standard rectangular waveguides, the rectangular waveguide outlet is in butt joint with the common port, and the polarization directions during butt joint are the same.

Further, first test holes are distributed around the public port, second test holes are distributed around the rectangular waveguide outlet, the first test holes are used for being connected with an external test system to test the electrical performance of the broadband waveguide duplexer, and the second test holes are used for testing the electrical performance of the broadband feed source of the rectangular waveguide outlet.

Further, the main reflecting surface, the cylindrical waveguide, the circular outlet feed source connecting disc, the broadband circular moment transformation and the central back disc are made of metal materials, and the ODU mounting plate, the broadband waveguide duplexer, the low-frequency port connector and the high-frequency port connector are made of plastic insulating materials.

Further, the high-frequency port and the low-frequency port are standard rectangular waveguides with the same size as the common port, the high-frequency port connector and the low-frequency port connector are straight-through rectangular waveguides, the high-frequency port is in butt joint with the high-frequency port connector, and the low-frequency port is in butt joint with the low-frequency port connector.

Further, third test holes are distributed around the high-frequency port, fourth test holes are distributed around the low-frequency port, the third test holes are used for being connected with an external test system and used for being connected with the high-frequency port connector, and the fourth test holes are used for being connected with the external test system and used for being connected with the low-frequency port connector.

Compared with the prior art, the microwave antenna has the beneficial effects that:

according to the scheme, the main reflecting surface and the moment outlet broadband feed source are assembled to form the moment outlet broadband antenna, the moment outlet broadband antenna is connected with the broadband waveguide duplexer, the broadband signal is divided into a low-frequency port and a high-frequency port which are respectively connected with the low-frequency port and the high-frequency port of the broadband waveguide duplexer, the low-frequency port and the high-frequency port are respectively in butt joint with a low-frequency port connector and a high-frequency port connector, ODU equipment is fixed on the antenna through a first mounting hole on an ODU mounting plate, the effect of multi-frequency communication can be achieved in a mode of directly buckling the adjacent two frequency bands by using the ODU equipment through the design, parts such as the moment soft waveguide and a separated mounting bracket are omitted, cost is reduced, and the integration degree of an antenna system is enhanced.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model and that other drawings may be obtained from them without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure of a microwave antenna according to an embodiment of the present utility model;

fig. 2 is a top view of a microwave antenna according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of a front structure of a broadband waveguide duplexer according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a broadband waveguide duplexer backside structure according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of an ODU mounting plate according to an embodiment of the utility model;

FIG. 6 is a schematic view of the structure of a central back plate according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram of a rectangular output broadband feed in an embodiment of the utility model;

fig. 8 is a schematic structural diagram of an assembly of a broadband waveguide duplexer with a low-frequency port connector and a high-frequency port connector according to an embodiment of the present utility model.

In the drawings, each reference numeral denotes: 1. a main reflecting surface; 11. a third connection hole; 2. a broadband feed source with a rectangular outlet; 21. a circular outlet broadband feed source; 211. broadband splash plate medium; 212. a cylindrical waveguide; 213. a circular outlet feed source connecting disc; 22. wide-band circular moment transformation; 221. a rectangular waveguide outlet; 222. a second test well; 3. an ODU mounting plate; 31. a cylinder; 311. a first mounting hole; 32. a second central bore; 321. a fourth connection hole; 33. a seventh connection hole; 4. a broadband waveguide duplexer; 40. a three-port microwave device; 41. a common port; 411. a first test well; 42. a high frequency port; 421. a third test well; 43. a low frequency port; 431. a fourth test well; 44. a step through hole; 5. a central back plate; 51. a second mounting hole; 52. a first central bore; 521. a first connection hole; 522. a second connection hole; 10. a high frequency port connector; 101. a fifth connection hole; 20. a low frequency port fitting; 201. and a sixth connection hole.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below are exemplary and intended to illustrate the present utility model and should not be construed as limiting the utility model, and all other embodiments, based on the embodiments of the present utility model, which may be obtained by persons of ordinary skill in the art without inventive effort, are within the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1-8, a microwave antenna includes a high-frequency port connector 10, a low-frequency port connector 20, a main reflecting surface 1, a rectangular outlet broadband feed 2 disposed at a central position of the main reflecting surface 1, an ODU mounting board 3 fixed on one side of the main reflecting surface 1, and a broadband waveguide duplexer 4 fixedly mounted on one side of the ODU mounting board 3 facing away from the main reflecting surface 1, wherein the broadband waveguide duplexer 4 includes a common port 41, a high-frequency port 42 and a low-frequency port 43, the common port 41 is in butt joint with the rectangular outlet broadband feed 2, the high-frequency port 42 is connected with the high-frequency port connector 10, the low-frequency port 43 is connected with the low-frequency port connector 20, the ODU mounting board 3 is provided with a first mounting hole 311, and the first mounting hole 311 is used for connecting the microwave antenna with external ODU equipment.

According to the scheme, the main reflection surface 1 and the moment exit broadband feed source 2 are assembled to form the moment exit broadband antenna, the moment exit broadband antenna is connected with the broadband waveguide duplexer 4, broadband signals are divided into a low-frequency port 43 and a high-frequency port 42 which are respectively connected with the broadband waveguide duplexer 4 in two ways, the low-frequency port 43 and the high-frequency port 42 are respectively connected with the low-frequency port connector 20 and the high-frequency port connector 10 in a butt joint mode, ODU equipment is fixed on the antenna through the first mounting holes 311 on the ODU mounting plate 3, the effect of multi-frequency communication can be achieved in a mode of direct buckling type mounting of the ODU equipment by two adjacent frequency bands through the design, parts such as a moment soft waveguide and a separated mounting bracket are omitted, cost is reduced, and the integration degree of an antenna system is enhanced.

Further, referring to fig. 3-5, the broadband waveguide duplexer 4 includes a three-port microwave device 40, the common port 41 is located at the center of the side of the three-port microwave device 40 close to the ODU mounting board 3, and the high-frequency port 42 and the low-frequency port 43 are located at the side of the three-port microwave device 40 away from the ODU mounting board 3 and are symmetrically arranged with the common port 41 as the center.

Specifically, the three-port microwave device 40 has a cube structure, signals are split into two paths from the common port 41, one path is transmitted to the low-frequency port 43 in the form of a low-pass filter, and the other path is transmitted to the high-frequency port 42 in the form of a high-pass filter, so that a wide frequency band can be split into two adjacent frequency bands.

Further, referring to fig. 5 and 6, the microwave antenna further includes a central back plate 5 fixedly connected between the main reflecting surface 1 and the ODU mounting plate 3, the first mounting hole 311 is disposed on a side of the ODU mounting plate 3 facing away from the central back plate 5, the central back plate 5 is provided with a second mounting hole 51, and the second mounting hole 51 is used for fixedly mounting the microwave antenna at a preset position.

Specifically, four cylinders 31 symmetrical along the longitudinal center line of the ODU mounting plate 3 are respectively distributed on the left and right sides of one side of the ODU mounting plate 3 facing away from the central back plate 5, and a first mounting hole 311 is provided in the center of each cylinder 31 and is used for being directly connected with ODU equipment. The direct buckling type installation mode is adopted, so that parts such as a rectangular soft waveguide and a separated installation bracket are omitted, and the cost is reduced.

Further, referring to fig. 3 to 6, the central back plate 5 includes a plate structure and a ring structure, the plate structure and the ring structure are integrally connected, the ring structure is provided with a first central hole 52, the odu mounting plate 3 is provided with a second central hole 32, and the first central hole 52, the second central hole 32 and the main reflecting surface 1 are on the same central line; the rectangular exit broadband feed 2 passes through the first central aperture 52, the second central aperture 32 in sequence and interfaces with the common port 41.

Specifically, the plate-shaped structure is L-shaped, the second mounting hole 51 is arranged on the side surface of the plate-shaped structure, the second mounting hole 51 can be connected with the hanger, and the whole antenna is stably and fixedly mounted at a preset position; first connecting holes 521 and second connecting holes 522 are sequentially distributed around the first central hole 52 from inside to outside, third connecting holes 11 which are in one-to-one correspondence with the first connecting holes 521 are distributed around the bottom center of the main reflecting surface 1, fourth connecting holes 321 which are in one-to-one correspondence with the second connecting holes 522 are distributed around the second central hole 32, wherein the number of the first connecting holes 521 and the third connecting holes 11 is six, the number of the second connecting holes 522 and the fourth connecting holes 321 is eight, and the first connecting holes 521 and the third connecting holes 11, the second connecting holes 522 and the fourth connecting holes 321 are respectively connected with one side of the central back plate 5 and one side of the main reflecting surface 1 through screws, and the other side of the central back plate 5 and the ODU mounting plate 3 are stably connected together.

In other embodiments, the number of the first and third connection holes 521 and 11 may be eight, ten, or the like; the number of the second and fourth connection holes 522 and 321 may be ten, twelve, etc.

Further, referring to fig. 7, the broadband feed 2 for broadband output includes a broadband output broadband feed 21 and a broadband circular-moment transformer 22, the broadband output broadband feed 21 includes a broadband splash plate medium 211, a cylindrical waveguide 212 and a circular output feed connection disc 213 coaxially arranged in sequence from top to bottom, the circular output feed connection disc 213 is embedded in the center of the reflecting surface, and the broadband circular-moment transformer 22 is coaxially arranged at the bottom of the circular output feed connection disc 213.

Specifically, the cylindrical waveguide 212 is of a hollow structure, three components of the broadband splash plate medium 211, the cylindrical waveguide 212 and the circular outlet feed source connecting disc 213 are bonded to form a circular outlet broadband feed source 21, and then the circular outlet broadband feed source 21 and the broadband circular moment transformation 22 are assembled to form a moment outlet broadband feed source 2.

Further, referring to fig. 3 and 7, the broadband feed 2 for rectangular output port further includes a rectangular waveguide output port 221 disposed on the broadband circular-rectangular transform 22, the common port 41 and the rectangular waveguide output port 221 are standard rectangular waveguides, the rectangular waveguide output port 221 is in butt joint with the common port 41, and the polarization directions during butt joint are the same.

Further, referring to fig. 3 and 7, a first test hole 411 is distributed around the common port 41, a second test hole 222 is distributed around the rectangular waveguide outlet 221, the first test hole 411 is used for connecting with an external test system to test the electrical performance of the broadband waveguide duplexer 4, and the second test hole 222 is used for testing the electrical performance of the broadband feed 2 of the rectangular waveguide outlet.

Specifically, the first test hole 411 and the second test hole 222 are each provided in four, and in other embodiments, the first test hole 411 and the second test hole 222 may be provided in six, eight, or the like.

Further, referring to fig. 1 and 2, the materials of the main reflecting surface 1, the cylindrical waveguide 212, the circular outlet feed connection plate 213, the broadband circular moment transformer 22, the central back plate 5, the ODU mounting plate 3, the broadband waveguide duplexer 4, the low frequency port connector 20 and the high frequency port connector 10 are set to be metal materials, and the broadband splash plate medium 211 is set to be plastic insulating materials.

Preferably, the materials of the main reflecting surface 1, the cylindrical waveguide 212, the circular outlet feed connection disc 213, the broadband circular moment transformation 22, the central back disc 5, the ODU mounting plate 3, the broadband waveguide diplexer 4, the low-frequency port connector 20 and the high-frequency port connector 10 may be made of aluminum, and the broadband splash plate medium 211 may be made of polystyrene material or other materials with dielectric constants similar to those of polystyrene material.

Further, referring to fig. 4 and 8, the high-frequency port 42 and the low-frequency port 43 are standard rectangular waveguides having the same size as the common port 41, the high-frequency port connector 10 and the low-frequency port connector 20 are straight rectangular waveguides, the high-frequency port 42 is abutted with the high-frequency port connector 10, and the low-frequency port 43 is abutted with the low-frequency port connector 20.

Further, referring to fig. 4 and 8, a third test hole 421 is distributed around the high frequency port 42, a fourth test hole 431 is distributed around the low frequency port 43, the third test hole 421 is used for connecting with an external test system and for connecting with the high frequency port connector 10, and the fourth test hole 431 is used for connecting with the external test system and for connecting with the low frequency port connector 20.

Specifically, the high-frequency port connector 10 and the low-frequency port connector 20 are both composed of two sections of cylinders 31 with coincident central lines and different diameters, the diameter of the cylinder 31 at the top end is smaller than that of the cylinder 31 at the bottom end, fifth connecting holes 101 are distributed on the cylinder 31 at the bottommost end of the high-frequency port connector 10, the fifth connecting holes 101 are connected with a third testing hole 421, and the high-frequency port connector 10 is stably connected with the broadband waveguide duplexer 4; a sixth connecting hole is distributed on the section of cylinder 31 at the bottom of the low-frequency port connector 20, and the sixth connecting hole is connected with the fourth test hole 431 to stably connect the low-frequency port connector 20 with the broadband waveguide duplexer 4. In other embodiments, the high frequency port fitting 10 and the low frequency port fitting 20 may be composed of three, four, etc. cylinders 31 with coincident centerlines and different diameters.

Further, referring to fig. 4 and 5, seventh connecting holes 33 which are symmetrical to and spaced from each other along the transverse center line of the ODU mounting board 3 are respectively distributed on the upper and lower sides of the ODU mounting board 3, step through holes 44 corresponding to the seventh connecting holes 33 one by one are distributed on the broadband waveguide duplexer 4, and the seventh connecting holes 33 are connected with the step through holes 44 to stably connect the ODU mounting board 3 with the broadband waveguide duplexer 4.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments.

The foregoing is a description of the embodiments of the present utility model, and is not to be construed as limiting the utility model, since modifications in the detailed description and the application scope will become apparent to those skilled in the art upon consideration of the teaching of the embodiments of the present utility model.

Claims

1. The utility model provides a microwave antenna, its characterized in that includes high frequency port joint, low frequency port joint, main reflecting surface, set up in the rectangular exit broadband feed of main reflecting surface central point put, be fixed in the ODU mounting panel of main reflecting surface one side and fixed mounting in the ODU mounting panel deviate from the broadband waveguide duplexer of main reflecting surface one side, broadband waveguide duplexer includes public port, high frequency port and low frequency port, public port with rectangular exit broadband feed dock, high frequency port with high frequency port connects to be connected, low frequency port with low frequency port connects to be connected, the ODU mounting panel is provided with first mounting hole, first mounting hole is used for with microwave antenna and outside ODU equipment are connected.

2. The microwave antenna of claim 1, wherein the broadband waveguide duplexer comprises a three-port microwave device, the common port is located at a center position of one side of the three-port microwave device close to the ODU mounting board, and the high-frequency port and the low-frequency port are located at one side of the three-port microwave device away from the ODU mounting board and are symmetrically arranged with the common port as a center.

3. The microwave antenna of claim 1, further comprising a central back plate fixedly connected between the main reflecting surface and the ODU mounting plate, wherein the first mounting hole is disposed on a side of the ODU mounting plate facing away from the central back plate, and wherein the central back plate is provided with a second mounting hole for fixedly mounting the microwave antenna in a preset position.

4. A microwave antenna according to claim 3, wherein the central back plate comprises a plate-like structure and a circular ring structure, the plate-like structure and the circular ring structure being integrally connected, the circular ring structure being provided with a first central aperture, the ODU mounting plate being provided with a second central aperture, the first central aperture, the second central aperture being on the same central line as the main reflecting surface; the rectangular outlet broadband feed source sequentially passes through the first central hole, the second central hole and is in butt joint with the public port.

5. A microwave antenna according to claim 3, wherein the broadband moment-outlet feed comprises a broadband moment-outlet feed and a broadband moment-round transformation, the broadband moment-outlet feed comprises broadband splash plate medium, a cylindrical waveguide and a circular outlet feed connection disc which are coaxially arranged in sequence from top to bottom, the circular outlet feed connection disc is embedded in the central position of the reflecting surface, and the broadband moment-round transformation is coaxially arranged at the bottom of the circular outlet feed connection disc.

6. The microwave antenna according to claim 5, wherein the rectangular output broadband feed source further comprises a rectangular waveguide output port disposed on the broadband circular-rectangular transformation, the common port and the rectangular waveguide output port are the same as standard rectangular waveguides, the rectangular waveguide output port is butted with the common port, and polarization directions of the rectangular waveguide output port and the common port are the same when the rectangular waveguide output port and the rectangular waveguide output port are butted.

7. The microwave antenna of claim 6, wherein a first test hole is distributed around the common port, a second test hole is distributed around the rectangular waveguide outlet, the first test hole is used for being connected with an external test system to test the electrical performance of the broadband waveguide duplexer, and the second test hole is used for testing the electrical performance of the rectangular outlet broadband feed source.

8. The microwave antenna according to claim 6, wherein materials of the main reflecting surface, the cylindrical waveguide, the circular outlet feed land, the broadband circular moment transformation, the center back plate, the ODU mounting plate, the broadband waveguide duplexer, the low-frequency port connector, and the high-frequency port connector are provided as metal materials, and the broadband splash plate medium is provided as a plastic insulating material.

9. A microwave antenna according to claim 1, wherein the high frequency port and the low frequency port are standard rectangular waveguides of the same size as the common port, the high frequency port fitting and the low frequency port fitting are straight-through rectangular waveguides, the high frequency port is in butt joint with the high frequency port fitting, and the low frequency port is in butt joint with the low frequency port fitting.

10. A microwave antenna according to claim 1, characterized in that a third test hole is distributed around the high frequency port, a fourth test hole is distributed around the low frequency port, the third test hole being for connection with an external test system and for connection with the high frequency port connector, the fourth test hole being for connection with an external test system and for connection with the low frequency port connector.