Radio frequency antenna and communication device

Abstract

The utility model provides a radio frequency antenna and communication equipment, the radio frequency antenna comprises a substrate, a first radiator and a second radiator, the substrate comprises a first surface and a second surface which are parallel to each other and arranged at an interval; the first radiator is arranged on the first surface and comprises a first radiation section and a first connection section, the second radiator is arranged on the second surface and comprises a second radiation section and a second connection section, and the first radiation section and the second radiation section are symmetrically arranged about a first direction; the extension direction of the first radiation section intersects with the first direction, and the phase of an electric signal in the first radiation section and the phase of the electric signal in the second radiation section are symmetrically arranged about the first direction. The radio frequency antenna provided by the utility model has the advantage of relatively high gain in the horizontal polarization direction.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of communication, and more particularly relates to a radio frequency antenna and a communication device. BACKGROUND

[0002] In a wireless communication device such as a router, for a full vertical polarization communication system, too high channel condition number (i.e. CN value) will affect the communication efficiency of the communication system, and adding a horizontal polarization antenna in the full vertical polarization communication system can optimize the channel condition number of the communication system, thereby improving the communication performance of the wireless communication device. However, the high gain feature of the antenna in the horizontal polarization direction in the related art cannot be compatible with the small size feature of the antenna. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the embodiments of the application is to provide a radio frequency antenna to solve the technical problem that the high gain feature of the antenna in the horizontal polarization direction in the prior art cannot be compatible with the small size feature of the antenna.

[0004] In a first aspect, the application provides a radio frequency antenna.

[0005] The radio frequency antenna provided by the application comprises a substrate, the substrate comprises a first surface and a second surface arranged in parallel and spaced apart; a first radiator and a second radiator, the first radiator is arranged on the first surface and the first radiator comprises a first radiation section, the second radiator is arranged on the second surface and the second radiator comprises a second radiation section, the first radiation section and the second radiation section are symmetrically arranged about a first direction, and the extension direction of the first radiation section intersects the first direction, and the phase of the electrical signal in the first radiation section and the phase of the electrical signal in the second radiation section are symmetrically arranged about the first direction.

[0006] The radio frequency antenna provided by the application has the beneficial effect that, compared with the prior art, after the electrical signals are respectively introduced into the first radiator and the second radiator of the radio frequency antenna provided by the application, the phase distribution of the electrical signal in the first radiation section and the phase distribution of the electrical signal in the second radiation section are symmetric about the first direction, so that the current in the first radiation section and the current in the second radiation section extend along the first direction after vector superposition, thereby realizing polarization radiation along the first direction through the first radiation section and the second radiation section, and further making the radio frequency antenna provided by the application have the advantage of high gain in the horizontal polarization direction.

[0007] Optionally, the orthogonal projection of the first radiation section on the first surface intersects the orthogonal projection of the second radiation section on the second surface.

[0008] And / or, the included angle between the extension direction of the first radiation section and the first direction is 0-45°.

[0009] Optionally, the first radiator comprises a plurality of first radiating units, each of the first radiating units is provided with one of the first radiating segments, the plurality of first radiating units are arranged in a second direction with intervals, and the first radiating segments in any two adjacent first radiating units are symmetrically distributed about the first direction;

[0010] The second radiator comprises a plurality of second radiating units, each of the second radiating units is provided with one of the second radiating segments, the plurality of second radiating units are arranged in the second direction with intervals, and the second radiating segments in any two adjacent second radiating units are symmetrically distributed about the first direction;

[0011] The first radiating units and the second radiating units are arranged in one-to-one correspondence.

[0012] Optionally, each of the first radiating units further comprises two first connecting segments, and the first radiating segment in the first radiating unit is connected between the two first connecting segments in the first radiating unit.

[0013] Each of the second radiating units further comprises two second connecting segments, and the second radiating segment in the second radiating unit is connected between the two second connecting segments in the second radiating unit.

[0014] The first connecting segments and the second connecting segments are arranged in one-to-one correspondence in parallel and with intervals along the first direction, and the phase of the electrical signal in the first connecting segment and the phase of the electrical signal in the second connecting segment are opposite about the second direction.

[0015] Optionally, the electrical signal in the first radiator has a conduction path length in the first radiating unit of half a wavelength of the electrical signal in the first radiator, and the electrical signal in the second radiator has a conduction path length in the second radiating unit of half a wavelength of the electrical signal in the second radiator.

[0016] Optionally, an end of the first radiator is provided with a first input segment, and the first input segment is connected between a signal source and the first radiating units.

[0017] An end of the second radiator is provided with a second input segment, and the second input segment is connected between the signal source and the second radiating units.

[0018] The width of the first input segment is greater than the width of the first radiating units, and the width of the second input segment is greater than the width of the second radiating units.

[0019] And / or, the signal source inputs the electrical signal of the first input section in phase opposition to the electrical signal of the second input section.

[0020] Optionally, the first input section is provided with a first open-circuit stub extending along the first direction, and the second input section is provided with a second open-circuit stub extending along the first direction.

[0021] Optionally, the first connection section connected with the first input section is provided with a first adjusting stub, at least part of the first adjusting stub extending along a direction orthogonal to the first direction.

[0022] The second connection section connected with the second input section is provided with a second adjusting stub, at least part of the second adjusting stub extending along a direction orthogonal to the first direction.

[0023] The first adjusting stub and the second adjusting stub are oppositely arranged along the first direction, and the first adjusting stub and the second adjusting stub are symmetrically arranged about the first direction.

[0024] Optionally, the first radiating body is provided with a first matching stub on the first connection section farthest from the first input section, the first matching stub extending along the first direction.

[0025] The second radiating body is provided with a second matching stub on the second connection section farthest from the second input section, the second matching stub extending along the first direction.

[0026] The first matching stub and the second matching stub are arranged in a stacked manner.

[0027] In a second aspect, the present application provides a communication device.

[0028] The communication device provided by the present application comprises the radio frequency antenna described in any of the above embodiments.

[0029] It can be understood that the beneficial effects of the above second aspect can be referred to the related description in the above first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0031] Figure 1Structure diagram of a radio frequency antenna provided by an embodiment of the present application Figure 1 ;

[0032] Figure 2 Structure diagram of a radio frequency antenna provided by an embodiment of the present application Figure 2 ;

[0033] Figure 3 Structure diagram of a radio frequency antenna provided by an embodiment of the present application Figure 3 ;

[0034] Figure 4 Structure diagram of a first radiator of a radio frequency antenna provided by an embodiment of the present application

[0035] Figure 5 Structure diagram of a second radiator of a radio frequency antenna provided by an embodiment of the present application

[0036] In the drawings, various reference numbers refer to components that perform the same or similar functions in the attached figures. As used herein:

[0037] 100, radio frequency antenna

[0038] 10, substrate; 11, first surface; 12, second surface

[0039] 20, first radiator; 21, first radiating section; 22, first connecting section; 23, first input section; 24, first open-circuit stub; 25, first adjusting stub; 26, first matching stub; 201, first radiating unit

[0040] 30, second radiator; 31, second radiating section; 32, second connecting section; 33, second input section; 34, second open-circuit stub; 35, second adjusting stub; 36, second matching stub; 301, second radiating unit DETAILED DESCRIPTION

[0041] In order to make the technical problems to be solved, technical solutions and beneficial effects of the present application more clearly understood, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0042] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0043] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like, indicate directions or positions based on the directions or positions shown in the drawings, and are used for convenience of description and simplification of description only, and do not indicate or imply that the referred device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0044] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0045] Please refer to Figure 1 , Figure 2 and Figure 3 for a description of the radio frequency antenna 100 provided by the embodiments of the application.

[0046] It should be noted that the first direction in the following text is the x direction shown in Figure 1 , the second direction in the following text is the y direction shown in Figure 1 , and the third direction in the following text is the z direction shown in Figure 1 .

[0047] The radio frequency antenna 100 provided by the application comprises a substrate 10, a first radiator 20 and a second radiator 30.

[0048] The substrate 10 comprises a first surface 11 and a second surface 12 arranged parallel to each other and spaced apart.

[0049] As shown in Figure 1 and Figure 3 , the first surface 11 and the second surface 12 both extend in the xOy plane shown in Figure 1 , and the first surface 11 and the second surface 12 are arranged parallel and spaced apart along the third direction z shown in Figure 3 .

[0050] In some embodiments, the material of the substrate 10 can include one or more materials with low dielectric constant, such as FR4 (epoxy resin based glass fiber composite material), RO4003C (glass cloth reinforced, ceramic filled hydrocarbon material), etc.

[0051] The first radiator 20 is arranged on the first surface 11 and includes a first radiating section 21, and the second radiator 30 is arranged on the second surface 12 and includes a second radiating section 31. The first radiating section 21 and the second radiating section 31 are symmetrically arranged about the first direction x, and the extension direction of the first radiating section 21 intersects the first direction x. The phase of the electrical signal in the first radiating section 21 and the phase of the electrical signal in the second radiating section 31 are symmetrically arranged about the first direction x.

[0052] As shown in Figure 2 , the first radiating section 21 is arranged on the first surface 11, and the second radiating section 31 is arranged on the second surface 12. The orthogonal projection of the first radiating section 21 on the first surface 11 and the orthogonal projection of the second radiating section 31 on the first surface 11 are symmetrically arranged about the first direction x.

[0053] It should be noted that the first radiating section 21 and the second radiating section 31 are symmetrically arranged about the first direction x, that is, the symmetry axis between the first radiating section 21 and the second radiating section 31 extends along the first direction x.

[0054] The first radiator 20 and the second radiator 30 are metal conductor materials. The first radiator 20 and the second radiator 30 can be connected to a signal source, so that the electrical signal in the signal source enters the first radiator 20 and the second radiator 30, respectively. The phase of the electrical signal in the first radiator 20 at the first radiating section 21 and the phase of the electrical signal in the second radiator 30 at the second radiating section 31 are symmetric about the first direction x. The current in the first radiating section 21 is shown as a in Figure 2 , and the current in the second radiating section 31 is shown as b in Figure 2 , as shown in Figure 2 , the vector superposition current of the current in the first radiating section 21 and the current in the second radiating section 31 extends along the first direction x, so that the beam generated by the first radiating section 21 and the beam electric field vector generated by the second radiating section 31 are superimposed to generate a radiation beam polarized along the first direction x.

[0055] Therefore, the first radiating section 21 and the second radiating section 31 jointly generate a beam radiated along the first direction x, which improves the gain of the radio frequency antenna 100 provided by the present application in the first direction x, and improves the horizontal gain of the radio frequency antenna 100 provided by the present application.

[0056] The radio frequency antenna 100 provided in the application has the beneficial effect that, compared with the prior art, after the electrical signals are respectively introduced into the first radiator 20 and the second radiator 30, the phase distribution of the electrical signals in the first radiation section 21 in the first radiator 20 is symmetrical about the first direction x to the phase distribution of the electrical signals in the second radiation section 31 in the second radiator 30, so that the current in the first radiation section 21 and the current in the second radiation section 31 extend along the first direction x after vector superposition, thereby realizing polarized radiation along the first direction x through the first radiation section 21 and the second radiation section 31, and further making the radio frequency antenna 100 provided in the application have the advantage of higher horizontal polarization direction gain.

[0057] In some embodiments provided in the application, the orthogonal projection of the first radiation section 21 on the first surface 11 intersects the orthogonal projection of the second radiation section 31 on the second surface 12.

[0058] As shown in Figure 2 , the first radiation section 21 and the second radiation section 31 are symmetrical about the first direction x, and the midpoint of the first radiation section 21 and the midpoint of the second radiation section 31 coincide in the third direction z.

[0059] In some embodiments provided in the application, the included angle between the extension direction of the first radiation section 21 and the first direction x is 0-45°.

[0060] As shown in Figure 2 , since the first radiation section 21 and the second radiation section 31 are arranged symmetrically about the first direction x, the included angle of the first radiation section 21 and the second radiation section 31 near the first direction x is any angle within 0-90°, that is, the included angle of the first radiation section 21 and the second radiation section 31 near the first direction x is an acute angle.

[0061] Therefore, the current in the first radiation section 21 and the current in the second radiation section 31 are vector superposed along the first direction x, and the current in the first radiation section 21 and the current in the second radiation section 31 are vector cancelled along the second direction y, so that the radio frequency antenna 100 provided in the application realizes polarized radiation in the first direction x.

[0062] In some embodiments provided in the application, the first radiator 20 includes a plurality of first radiation units 201, each of which includes a first radiation section 21, and the plurality of first radiation units 201 are arranged at intervals along the second direction y.

[0063] The second radiator 30 includes a plurality of second radiation units 301, each of which includes a second radiation section 31, and the plurality of second radiation units 301 are arranged at intervals along the second direction y.

[0064] The first radiating unit 201 and the second radiating unit 301 are arranged in a one-to-one correspondence.

[0065] As shown in the figure, multiple first radiation units 201 are connected in series along the second direction y, and the axis of symmetry of the two first radiation segments 21 in two adjacent first radiation units 201 extends along the first direction x. Multiple second radiation units 301 are connected in series along the second direction y, and the axis of symmetry of the two second radiation segments 31 in two adjacent second radiation units 301 extends along the first direction x.

[0066] The first radiating unit 201 and the second radiating unit 301 are arranged in a one-to-one correspondence, that is, the first radiating unit 201 and the corresponding second radiating unit 301 are arranged along the third direction z, so that the first radiating segment 21 in the first radiating unit 201 and the second radiating segment 31 in the second radiating unit 301 corresponding to the first radiating unit 201 are stacked along the third direction z.

[0067] Therefore, by setting multiple first radiation segments 21 and second radiation segments 31, and arranging the multiple first radiation segments 21 and the multiple second radiation segments 31 in a one-to-one correspondence along the second direction y, each first radiation segment 21 and its corresponding second radiation segment 31 generate a beam along the first direction x. By superimposing the beams generated by the multiple first radiation segments 21 or the multiple second radiation segments 31 in the first direction x, the gain of the radio frequency antenna 100 provided in this application in the first direction x can be greatly increased.

[0068] In some embodiments provided in this application, any two adjacent first radiation segments 21 are symmetrically distributed about the first direction x, and any two adjacent second radiation segments 31 are symmetrically distributed about the first direction x.

[0069] like Figure 2 As shown, the phase of the electrical signal in any two adjacent first radiation segments 21 in the second direction y is symmetrically distributed about the first direction x, and the phase of the electrical signal in any two adjacent second radiation segments 31 in the second direction y is symmetrically distributed about the first direction x.

[0070] Therefore, the current directions in the multiple first radiation segments 21 are as follows Figure 2 As shown in a, the current directions in the multiple second radiation segments 31 are as follows: Figure 2 As shown in b, this allows multiple first radiating segments 21 and their corresponding second radiating segments 31 to generate beams along the first direction x, thereby increasing the gain of the radio frequency antenna 100 provided in this application in the first direction x.

[0071] In some embodiments provided in the present application, each first radiating unit 201 further comprises two first connecting sections 22, and the first radiating section 21 in the first radiating unit 201 is connected between the two first connecting sections 22 in the first radiating unit 201.

[0072] As shown in Figure 2 , Figure 4 and Figure 5 , the first connecting section 22 extends along the second direction y, and there are multiple first connecting sections 22, each first radiating unit 201 comprises two first connecting sections 22 and one first radiating section 21, and the first radiating section 21 is connected between the two first connecting sections 22, so that the two first connecting sections 22 in the first radiating unit 201 are arranged along the first direction x and also arranged along the second direction y.

[0073] The second connecting section 32 extends along the second direction y, and there are multiple second connecting sections 32, each second radiating unit 301 comprises two second connecting sections 32 and one second radiating section 31, and the second radiating section 31 is connected between the two second connecting sections 32, so that the two second connecting sections 32 in the second radiating unit 301 are arranged along the first direction x and also arranged along the second direction y.

[0074] The first connecting section 22 and the second connecting section 32 correspond to each other, and the first connecting section 22 and the second connecting section 32 corresponding thereto are arranged in parallel and spaced apart along the first direction x.

[0075] In some embodiments provided in the present application, the first connecting section 22 and the second connecting section 32 correspond to each other and are arranged in parallel and spaced apart along the first direction x, and the phase of the electrical signal in the first connecting section 22 and the phase of the electrical signal in the second connecting section 32 are opposite with respect to the second direction y.

[0076] For any one first radiating unit 201, one first connecting section 22 in the first radiating unit 201 and one second connecting section 32 in the second radiating unit 301 corresponding to the first radiating unit 201 are arranged opposite along the first direction x, and the other first connecting section 22 in the first radiating unit 201 and the other second connecting section 32 in the second radiating unit 301 corresponding to the first radiating unit 201 are arranged opposite along the first direction x.

[0077] The phase of the electrical signal in the first connecting section 22 and the phase of the electrical signal in the second connecting section 32 are opposite with respect to the second direction y, that is, the phase of the electrical signal at any position in the first connecting section 22 is opposite to the phase of the electrical signal at the position symmetrical to the position with respect to the second direction y in the second connecting section 32, that is, as shown in Figure 4 and Figure 5 , the direction of the current in the first connecting section 22 and the direction of the current in the second connecting section 32 corresponding thereto are opposite.

[0078] Thus, the first connecting section 22 and the second connecting section 32 corresponding thereto combine to form a parallel double-line structure, and the current in the first connecting section 22 and the current in the second connecting section 32 corresponding thereto are in opposite directions, so that the beams generated by the first connecting section 22 and the beams generated by the second connecting section 32 corresponding thereto cancel each other out, thereby causing the first connecting section 22 and the second connecting section 32 to not radiate beams outward.

[0079] In some embodiments provided in the present application, the length of the first radiating unit 201 is half the wavelength of the electrical signal in the first radiator 20, and the length of the second radiating unit 301 is half the wavelength of the electrical signal in the second radiator 30.

[0080] The length of the first radiating unit 201 is the path length of the electrical signal from one end of the first radiating unit 201 in the second direction y to the other end of the first radiating unit 201 in the second direction y, and the length of the second radiating unit 301 is the path length of the electrical signal from one end of the second radiating unit 301 in the second direction y to the other end of the second radiating unit 301 in the second direction y.

[0081] Thus, by setting the length of the first radiating unit 201 and the length of the second radiating unit 301, the direction of the current in the first radiator 20 is as shown by c in Figure 4 , and the direction of the current in the second radiator 30 is as shown by d in Figure 5 .

[0082] In other embodiments provided in the present application, a plurality of first radiating units 201 are arranged along the second direction y, and the length of the first radiating unit 201 gradually decreases in a direction away from the first input section 23, and a plurality of second radiating units 301 are arranged along the second direction y, and the length of the second radiating unit 301 gradually decreases in a direction away from the second input section 33.

[0083] For example, the length of the first radiating unit 201 closest to the first input section 23 in the first radiator 20 is half the wavelength corresponding to the minimum frequency in the frequency band of the electrical signal in the first radiator 20, and the length of the first radiating unit 201 farthest from the first input section 23 in the first radiator 20 is half the wavelength corresponding to the maximum frequency in the frequency band of the electrical signal in the first radiator 20, so that the length of the first radiating unit 201 closest to the first input section 23 in the first radiator 20 is greater than the length of the first radiating unit 201 farthest from the first input section 23 in the first radiator 20.

[0084] Similarly, the length of the second radiating unit 301 closest to the second input segment 33 in the second radiator 30 is half the wavelength corresponding to the minimum frequency in the frequency band of the electrical signal within the second radiator 30, and the length of the second radiating unit 301 furthest from the second input segment 33 in the second radiator 30 is half the wavelength corresponding to the maximum frequency in the frequency band of the electrical signal within the second radiator 30, thus making the length of the second radiating unit 301 closest to the second input segment 33 in the second radiator 30 greater than the length of the second radiating unit 301 furthest from the second input segment 33 in the second radiator 30.

[0085] This configuration allows for the optimization of the impedance of the first radiator 20 and the second radiator 30, thereby broadening the impedance bandwidth of the radio frequency antenna 100 provided in this application.

[0086] In some embodiments provided in this application, the frequency band of the electrical signal in the first radiator 20 is the same as the frequency band of the electrical signal in the second radiator 30.

[0087] In other embodiments, the frequency band of the electrical signal in the first radiator 20 is different from the frequency band of the electrical signal in the second radiator 30.

[0088] In some embodiments provided in this application, the end of the first radiator 20 is provided with a first input segment 23, which is connected between the signal source and the first radiating unit 201. ， The end of the second radiator 30 is provided with a second input segment 33, which is connected between the signal source and the second radiating unit 301.

[0089] like Figure 4 As shown, the first input segment 23 is located at one end of the first radiator 20 in the second direction y. One end of the first input segment 23 is connected to the signal source, and the other end of the first input segment 23 is connected to the one of the plurality of first radiating units 201 that is closest to the signal source in the second direction y.

[0090] like Figure 5 As shown, the second input segment 33 is located at one end of the second radiator 30 in the second direction y. One end of the second input segment 33 is connected to the signal source, and the other end of the second input segment 33 is connected to the one of the plurality of second radiating units 301 that is closest to the signal source in the second direction y.

[0091] Thus, the electrical signal from the signal source is input to the first radiation segment 21 of the plurality of first radiation units 201 through the first input segment 23, and the electrical signal from the signal source is input to the second radiation segment 31 of the plurality of second radiation units 301 through the second input segment 33.

[0092] In some embodiments provided in this application, the first input segment 23 and the second input segment 33 are arranged at intervals along a first direction x, and the electrical signal input from the signal source to the first input segment 23 is out of phase with the electrical signal input from the signal source to the second input segment 33.

[0093] Therefore, the phase difference between the electrical signal input to the first radiation section 21 and the electrical signal input to the second input section 33 is 180°, so that the first input section 23 and the second input section 33 form a parallel double-line structure, so that the beam generated by the first input section 23 and the beam generated by the second input section 33 cancel each other out, thereby preventing the first input section 23 and the second input section 33 from radiating beams outward.

[0094] In some embodiments provided in this application, the width of the first input segment 23 is greater than the width of the first radiating unit 201, and the width of the second input segment 33 is greater than the width of the second radiating unit 301.

[0095] like Figure 4 As shown, the width of the first input segment 23 is the size of the first input segment 23 in the first direction x, and the width of the first radiation unit 201 is the size of any part of the first radiation unit 201 in the first direction x. After the electrical signal of the signal source is input to the first input segment 23, the electrical signal is transmitted from the first input segment 23 to the first radiation segment 21, thereby optimizing the impedance bandwidth of the first radiator 20.

[0096] Similarly, such as Figure 5 As shown, the width of the second input segment 33 is the size of the second input segment 33 in the first direction x, and the width of the second radiation unit 301 is the size of any part of the second radiation unit 301 in the first direction x. After the electrical signal of the signal source is input into the second input segment 33, the electrical signal is transmitted from the second input segment 33 to the second radiation segment 31, thereby optimizing the impedance bandwidth of the second radiator 30.

[0097] In some embodiments provided in this application, at least a portion of the first input segment 23 and at least a portion of the second input segment 33 are arranged to overlap along a third direction z, so that the portion of the first input segment 23 and the portion of the second input segment 33 form a non-plane parallel double-line structure, thereby improving the stability of signal transmission.

[0098] In some embodiments provided in this application, the first input segment 23 is provided with a first open branch 24, which extends along a first direction x, and the second input segment 33 is provided with a second open branch 34, which extends along the first direction x.

[0099] like Figure 4As shown in the figure, the first open stub 24 extends along the first direction x, and the first input section 23 extends along the second direction y, that is, the first open stub 24 is orthogonal to the first input section 23, a part of the first open stub 24 is located on one side of the first input section 23 in the first direction x, and another part of the first open stub 24 is located on the other side of the first input section 23 in the first direction x.

[0100] As shown in the figure, Figure 5 As shown in the figure, the second open stub 34 extends along the first direction x, and the second input section 33 extends along the second direction y, that is, the second open stub 34 is orthogonal to the second input section 33, a part of the second open stub 34 is located on one side of the second input section 33 in the first direction x, and another part of the second open stub 34 is located on the other side of the second input section 33 in the first direction x.

[0101] Therefore, by the first open stub 24 and the second open stub 34 generating capacitive reactance at the second input section 33 and the second input section 33 respectively, the input impedance of the first radiator 20 and the second radiator 30 is adjusted respectively, so that the radio frequency antenna 100 and the signal source are well matched.

[0102] In some embodiments provided in the present application, the first adjusting stub 25 is arranged on the first connecting section 22 connected with the first input section 23, at least part of the first adjusting stub 25 extends along the direction orthogonal to the first direction x, and the second adjusting stub 35 is arranged on the second connecting section 32 connected with the second input section 33, at least part of the second adjusting stub 35 extends along the direction orthogonal to the first direction x.

[0103] As shown in the figure, Figure 4 As shown in the figure, Figure 5 As shown in the figure, the second adjusting stub 35 is arranged on the second connecting section 32 connected with the second input section 33, the first adjusting stub 25 extends along the second direction y away from the side of the signal source, and the second adjusting stub 35 extends along the second direction y close to the side of the signal source.

[0104] The first adjusting stub 25 and the second adjusting stub 35 are arranged opposite to each other along the first direction x, and the first adjusting stub 25 and the second adjusting stub 35 are symmetrically arranged about the first direction x.

[0105] It should be noted that the first adjusting stub 25 and the second adjusting stub 35 are arranged opposite to each other along the first direction x, that is, the first adjusting stub 25 is located on one side of the second adjusting stub 35 in the first direction x, and the second adjusting stub 35 is located on the other side of the first adjusting stub 25 in the first direction x.

[0106] Therefore, by adjusting the input impedance of the first radiating segment 21 through the first adjusting stub 25, the bandwidth of the first radiating segment 21 is adjusted through the first adjusting stub 25. By adjusting the input impedance of the second radiating segment 31 through the second adjusting stub 35, the bandwidth of the second radiating segment 31 is adjusted through the second adjusting stub 35, thereby widening the bandwidth of the radio frequency antenna 100.

[0107] In some embodiments provided in this application, a first matching branch 26 is provided on the first connecting segment 22 of the first radiator 20 that is farthest from the first input segment 23, and the first matching branch 26 extends along the first direction x; a second matching branch 36 is provided on the second connecting segment 32 of the second radiator 30 that is farthest from the second input segment 33, and the second matching branch 36 extends along the first direction x.

[0108] like Figure 4 As shown, the first input segment 23 is located at one end of the first radiator 20 in the second direction y, and the first matching branch 26 is located at the other end of the first radiator 20 in the second direction y. The first matching branch 26 is connected to the first connecting segment 22 of the plurality of first radiating units 201 that is furthest from the first input segment 23. The size of the first matching branch 26 in the first direction x is greater than or equal to the length of the first radiating segment 21 in the first direction x, and the size of the first matching branch 26 in the second direction y is greater than or equal to the length of the first connecting segment 22 in the second direction y.

[0109] Therefore, the area of ​​the first matching branch 26 projected onto the first surface 11 is relatively large. The impedance matching of the first radiator 20 can be converged through the first matching branch 26, thereby widening the bandwidth of the first radiator 20.

[0110] Similarly, such as Figure 5 As shown, the second input segment 33 is located at one end of the second radiator 30 in the second direction y, and the second matching branch 36 is located at the other end of the second radiator 30 in the second direction y. The second matching branch 36 is connected to the second connecting segment 32 of the second radiating unit 301 that is furthest from the second input segment 33. The size of the second matching branch 36 in the first direction x is greater than or equal to the length of the second radiating segment 31 in the first direction x, and the size of the second matching branch 36 in the second direction y is greater than or equal to the length of the second connecting segment 32 in the second direction y.

[0111] Therefore, the area of ​​the second matching branch 36 projected onto the first surface 11 is relatively large. The impedance matching of the second radiator 30 can be converged through the second matching branch 36, thereby widening the bandwidth of the second radiator 30.

[0112] In some embodiments provided in this application, the first matching branch 26 and the second matching branch 36 are arranged correspondingly along the third direction z.

[0113] A communication device (not shown in the figure) provided by the present application is described below.

[0114] The communication device provided by the present application comprises the radio frequency antenna 100 in any of the above embodiments.

[0115] The radio frequency antenna 100 provided by the present application generates a beam with a horizontally polarized direction by superimposing the beam electric fields generated by the first radiation section 21 and the second radiation section 31 arranged in a cross manner, so that the radio frequency antenna 100 has the advantage of higher gain in the horizontally polarized direction.

[0116] Therefore, the communication device provided by the present application adopts the radio frequency antenna 100 in any of the above embodiments, so that the communication device provided by the present application has the advantage of higher communication quality in the horizontally polarized direction.

[0117] The above merely provides the preferred embodiments of the present application, but not for limiting the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A radio frequency antenna, characterized by The application relates to a substrate, a first radiator and a second radiator. The substrate comprises a first surface and a second surface arranged in parallel and spaced apart; The first radiator is arranged on the first surface and comprises a first radiation segment, the second radiator is arranged on the second surface and comprises a second radiation segment, the first radiation segment and the second radiation segment are symmetrically arranged about a first direction, and the extension direction of the first radiation segment intersects the first direction, and the phase of an electric signal in the first radiation segment and the phase of the electric signal in the second radiation segment are symmetrically arranged about the first direction.

2. The radio frequency antenna of claim 1, wherein: The orthographic projection of the first radiation segment on the first surface intersects the orthographic projection of the second radiation segment on the second surface; And / or, the included angle between the extension direction of the first radiation segment and the first direction is 0-45 degrees.

3. The radio frequency antenna of claim 1, wherein: The first radiator comprises a plurality of first radiation units, each of which is provided with a first radiation segment, and the first radiation units are arranged in parallel and spaced apart along a second direction, and the first radiation segments in any two adjacent first radiation units are symmetrically distributed about the first direction; The second radiator comprises a plurality of second radiation units, each of which is provided with a second radiation segment, and the second radiation units are arranged in parallel and spaced apart along the second direction, and the second radiation segments in any two adjacent second radiation units are symmetrically distributed about the first direction; The first radiation units and the second radiation units are arranged in one-to-one correspondence.

4. The radio frequency antenna of claim 3, wherein, Each first radiation unit further comprises two first connecting segments, and the first radiation segment in the first radiation unit is connected between the two first connecting segments in the first radiation unit; Each second radiation unit further comprises two second connecting segments, and the second radiation segment in the second radiation unit is connected between the two second connecting segments in the second radiation unit; The first connecting segments and the second connecting segments are arranged in parallel and spaced apart in one-to-one correspondence along the first direction, and the phase of the electric signal in the first connecting segment and the phase of the electric signal in the second connecting segment are opposite about the second direction.

5. The radio frequency antenna of claim 4, wherein: The conduction path length of the electric signal in the first radiation unit in the first radiator is a half wavelength of the electric signal in the first radiator, and the conduction path length of the electric signal in the second radiation unit in the second radiator is a half wavelength of the electric signal in the second radiator.

6. The radio frequency antenna of claim 4, wherein: An end of the first radiator is provided with a first input segment, and the first input segment is connected between a signal source and the first radiation unit; An end of the second radiator is provided with a second input segment, and the second input segment is connected between the signal source and the second radiation unit; The width of the first input segment is greater than the width of the first radiation unit, and the width of the second input segment is greater than the width of the second radiation unit; And / or, the electric signal input by the signal source into the first input segment and the electric signal input by the signal source into the second input segment are opposite in phase.

7. The radio frequency antenna of claim 6, wherein: The first input section is provided with a first open-circuit branch extending in the first direction, and the second input section is provided with a second open-circuit branch extending in the first direction.

8. The radio frequency antenna of claim 6, wherein: The first connection section connected to the first input section is provided with a first adjusting branch, at least part of the first adjusting branch extending in a direction orthogonal to the first direction; The second connection section connected to the second input section is provided with a second adjusting branch, at least part of the second adjusting branch extending in a direction orthogonal to the first direction; The first adjusting branch and the second adjusting branch are oppositely arranged in the first direction and symmetrically arranged about the first direction.

9. The radio frequency antenna of claim 6, wherein: The first radiating body is provided with a first matching branch on the first connection section farthest from the first input section, the first matching branch extending in the first direction; The second radiating body is provided with a second matching branch on the second connection section farthest from the second input section, the second matching branch extending in the first direction; The first matching branch and the second matching branch are arranged in a stack.

10. A communication device, characterized by: A radio frequency antenna comprising any one of claims 1-9.

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