Array coupling microwave detection antenna with long and narrow detection area

Abstract

The utility model provides an array coupling microwave detection antenna with a long and narrow detection area, which comprises a reference ground and at least two pairs of dual coupling poles, and each pair of dual coupling poles comprises a first radiation source electrode and a second radiation source electrode which are arranged on the same side of the reference ground. Wherein the first radiation source electrode and the second radiation source electrode have initial extension directions which are far away from each other, and correspondingly, the far-away direction of any pair of dual coupling poles is taken as the left-right direction of the pair of dual coupling poles; the other pairs of the dual-coupled poles are provided on the same side as the reference ground surface as the pair of the dual-coupled poles, and have a direction away from each other that is the same as the left-right direction of the pair of the dual-coupled poles, so that the pair of the dual-coupled poles is excited in a state in which the pair of the dual-coupled poles is excited. Energy generated by the dual coupling poles is coherently superposed, the energy in the left-right direction is compressed, and the energy in the direction perpendicular to the left-right direction is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of microwave detection, especially relates to an array coupling microwave detection antenna with long and narrow detection area. BACKGROUND

[0002] Microwave detection technology is based on the principle of microwave Doppler effect, which can detect the activity of a target space to determine whether a human body enters and exists in the target space, so as to detect the moving object without invading privacy, and thus can be applied as an important hub between people and objects, objects and objects, and has wide application prospects in behavior detection and existence detection. Specifically, the microwave detection technology transmits a microwave beam to the target space to form a detection area in the target space, receives a reflected echo formed by the microwave beam reflected by the corresponding object in the detection area, and outputs a Doppler intermediate frequency signal corresponding to the frequency and phase difference between the microwave beam and the reflected echo based on the subsequent mixing detection method. Based on the principle of Doppler effect, the fluctuation of the Doppler intermediate frequency signal in amplitude corresponds to the movement of the object and is suitable for representing human activity in human activity detection application. However, due to the lack of effective restriction and control means of microwave beam, especially the shape adjustment means of microwave beam, the adaptability of microwave detection technology in different application scenarios is limited in practical application.

[0003] Specifically, referring to the structure of the present utility model Figure 1A As shown in the drawings of the present utility model, the structure of the existing planar antenna 10P and the simulation results corresponding to the structure are shown, wherein the planar antenna 10P forms a radiation space 100P, wherein the radiation space 100P corresponds to the coverage range of the electromagnetic wave radiated by the planar antenna 10P, as can be seen from the figure, the corresponding projection surface of the radiation space 100P in the detection direction of the planar antenna 10P tends to be circular, wherein due to the fact that circular and square target detection spaces are mostly used in practical application, the planar antenna 10P has certain adaptability in such practical application.

[0004] However, in some application scenarios, such as underground garage, warehouse shelf, courtyard outdoor and other long and narrow scenes with large length-width ratio, referring to Figure 1BAs shown, taking an underground garage as an example, the general installation height is 2.5-3 meters, the far distance direction can reach 30 meters, and the near distance direction is only 10 meters. The radiation space 100P formed by the planar antenna 10P cannot meet the detection requirements. On the one hand, the radiation energy of the planar antenna 10P is difficult to reach 30 meters, and even if the energy can reach 30 meters, under the limitation of the circular radiation space 100P, the actual detection area will far exceed the target detection area in the near distance direction, and false triggering and other conditions are extremely easy to occur. On the other hand, when the radiation energy of the planar antenna 10P is adjusted to about 10 meters to match the near distance direction, multiple planar antennas 10P are needed in the far distance direction to meet the corresponding detection requirements, and due to the limited detection distance of the planar antenna 10P, the vehicle needs to be close to be responded, which cannot meet the normal underground garage lighting requirements. Utility model content

[0005] One purpose of the present utility model is to provide an array coupling microwave detection antenna with a narrow and long detection area, wherein the array coupling microwave detection antenna with a narrow and long detection area can generate a flat detection beam in the lateral direction perpendicular to the reference ground surface, so that the array coupling microwave detection antenna with a narrow and long detection area is adapted to the application of a narrow and long target detection area, and meets the adaptability of the array coupling microwave detection antenna with a narrow and long detection area to specific application environment.

[0006] The utility model discloses another purpose is to provide a long narrow detection area's array coupling microwave detection antenna, wherein each pair of said pair of dual coupling dipoles includes the first radiation source pole and the second radiation source pole of being arranged on the same side of the reference ground, the first radiation source pole has a first feed end, and the second radiation source pole has a second feed end, wherein the first radiation source pole and the second radiation source pole extend from the first feed end and the second feed end respectively and have the initial extension direction of mutual separation, corresponding with the mutual separation direction of any pair of said pair of dual coupling dipoles as the left and right direction of the pair of said pair of dual coupling dipoles, other each pair of said pair of dual coupling dipoles is arranged with the same side of the reference ground with the pair of said pair of dual coupling dipoles and has the same mutual separation direction with the left and right direction of the pair of said pair of dual coupling dipoles, wherein the space distance of the midpoint of the line between the first feed end and the second feed end of one pair of said pair of dual coupling dipoles and the midpoint of the line between the first feed end and the second feed end of another pair of said pair of dual coupling dipoles of two pairs of said pair of dual coupling dipoles is less than the state of lambda, wherein lambda is the wavelength parameter corresponding to the frequency parameter of the long narrow detection area's array coupling microwave detection antenna, so that the energy of each pair of said pair of dual coupling dipoles is coherently superimposed and forms a detection beam together in the state of each pair of said pair of dual coupling dipoles being excited, and the energy of the detection beam is compressed along the left and right directions based on the mutual influence of the energy of each pair of said pair of dual coupling dipoles, so that the long narrow detection area's array coupling microwave detection antenna has the long narrow detection area of being narrowed in the left and right directions, so that the long narrow detection area's array coupling microwave detection antenna is suitable for long and narrow target detection space.

[0007] The utility model discloses another purpose is to provide a long narrow detection area's array coupling microwave detection antenna, wherein the long narrow detection area's array coupling microwave detection antenna based on the mutual influence of the energy of each pair of said pair of dual coupling dipoles makes the energy of the detection beam along the front and back direction be enhanced, wherein the front and back direction is the direction of being perpendicular to the left and right direction along the reference ground, and the detection distance of the long narrow detection area's array coupling microwave detection antenna along the front and back direction is improved, so as to adapt to long and narrow target detection space.

[0008] Another purpose of the utility model lies in providing an array coupling microwave detection antenna with a long and narrow detection area, wherein the space distance between the midpoint of the connection line between the first feeding end and the second feeding end of one pair of the dual coupling dipoles and the midpoint of the connection line between the first feeding end and the second feeding end of another pair of the dual coupling dipoles is greater than or equal to λ / 4 and less than or equal to 3λ / 4, so that the array coupling microwave detection antenna with the long and narrow detection area is miniaturized in the left-right direction.

[0009] Another purpose of the utility model lies in providing an array coupling microwave detection antenna with a long and narrow detection area, wherein the array coupling microwave detection antenna with the long and narrow detection area reduces the radiation in the left-right direction, so that the array coupling microwave detection antenna with the long and narrow detection area is prevented from being interfered in the left-right direction, the detection reliability of the array coupling microwave detection antenna with the long and narrow detection area on the long and narrow target detection area is improved, the array coupling microwave detection antenna with the long and narrow detection area enhances the radiation in the front-back direction, the adaptability of the array coupling microwave detection antenna with the long and narrow detection area on the long and narrow target detection area is improved, the adaptability of the array coupling microwave detection antenna with the long and narrow detection area on the environment is improved, and the array coupling microwave detection antenna with the long and narrow detection area can be reliably applied to the long and narrow scenes such as underground garage, warehouse shelf, courtyard outdoor and the like.

[0010] According to one aspect of the utility model, the utility model provides an array coupling microwave detection antenna with a long and narrow detection area, wherein the array coupling microwave detection antenna with the long and narrow detection area comprises:

[0011] a reference ground; and

[0012] at least two pairs of dual-coupled dipoles, wherein each pair of the dual-coupled dipoles comprises a first radiating source and a second radiating source disposed on the same side of the reference ground plane, the first radiating source having a first feeding end, the second radiating source having a second feeding end, wherein the first radiating source and the second radiating source extend from the first feeding end and the second feeding end respectively and have initial extending directions away from each other, corresponding to the left and right directions of the pair of the dual-coupled dipoles, and other pairs of the dual-coupled dipoles are disposed on the same side of the reference ground plane as the pair of the dual-coupled dipoles and have the same directions away from each other as the left and right directions of the pair of the dual-coupled dipoles, wherein two adjacent pairs of the dual-coupled dipoles are disposed with a spatial distance between the midpoints of the lines connecting the first feeding end and the second feeding end of one pair of the dual-coupled dipoles and the midpoints of the lines connecting the first feeding end and the second feeding end of another pair of the dual-coupled dipoles less than λ, where λ is a wavelength parameter corresponding to a frequency parameter of the microwave detection antenna array having the elongated detection region.

[0013] In an embodiment, wherein the first radiating source and the second radiating source have a length greater than or equal to λ / 16, the first feeding end and the second feeding end are close to each other within a distance less than or equal to λ / 32, the distance between the first feeding end and the second feeding end and the reference ground plane is greater than or equal to λ / 32, the distance between the first feeding end and the reference ground plane is greater than the distance between the other end of the first radiating source and the reference ground plane, and the distance between the second feeding end and the reference ground plane is greater than the distance between the other end of the second radiating source and the reference ground plane.

[0014] In an embodiment, wherein the two adjacent pairs of the dual-coupled dipoles are disposed with a spatial distance between the midpoints of the lines connecting the first feeding end and the second feeding end of one pair of the dual-coupled dipoles and the midpoints of the lines connecting the first feeding end and the second feeding end of another pair of the dual-coupled dipoles greater than or equal to λ / 4 and less than or equal to 3λ / 4.

[0015] In an embodiment, wherein the two adjacent pairs of the dual-coupled dipoles are disposed with a spatial distance between the midpoints of the lines connecting the first feeding end and the second feeding end of one pair of the dual-coupled dipoles and the midpoints of the lines connecting the first feeding end and the second feeding end of another pair of the dual-coupled dipoles greater than or equal to 3λ / 8 and less than or equal to 5λ / 8.

[0016] In an embodiment, wherein the two adjacent pairs of the dual-coupled dipoles are arranged with one pair of the dual-coupled dipoles on the left side or the right side of another pair of the dual-coupled dipoles.

[0017] In an embodiment, wherein two adjacent pairs of said dual-coupled dipoles are staggered in a front-rear direction, wherein said front-rear direction is a direction perpendicular to said left-right direction along said reference ground plane, corresponds to one of a front-left, a front-right, a back-left and a back-right position of one pair of said dual-coupled dipoles with respect to another pair of said dual-coupled dipoles.

[0018] In an embodiment, wherein two adjacent pairs of said dual-coupled dipoles are arranged in a state that one pair of said dual-coupled dipoles is in front of or behind another pair of said dual-coupled dipoles, wherein said front-rear direction is a direction perpendicular to said left-right direction along said reference ground plane

[0019] In an embodiment, wherein each pair of said dual-coupled dipoles is fed at said first feeding end and grounded at said second feeding end.

[0020] In an embodiment, wherein each pair of said dual-coupled dipoles is differentially fed at said first feeding end and said second feeding end, each pair of said dual-coupled dipoles is fed with in-phase excitation signals at said first feeding end.

[0021] In an embodiment, wherein two adjacent pairs of said dual-coupled dipoles are arranged in a structure pattern that the extension direction of said first radiating dipole is in the same direction.

[0022] In an embodiment, wherein two adjacent pairs of said dual-coupled dipoles are arranged in a structure pattern that the extension direction of said first radiating dipole is in the opposite direction.

[0023] In an embodiment, wherein said array of microwave detection antennas with elongated detection regions comprises a passive microstrip isolator and a microwave chip, wherein said passive microstrip isolator has a first port, a second port and a third port, and comprises a first microstrip connecting line connected between said first port and said second port, a second microstrip connecting line connected between said first port and said third port, and a resistance connected between said second port and said third port, wherein the sum of the lengths of said first microstrip connecting line and said second microstrip connecting line approximates to one-half of the electrical wavelength within an error range of 20%, wherein said microwave chip adopts a transmit-receive separation design and has different ports as a transmission port for outputting excitation signals and a receiving port for accessing feedback signals, respectively, wherein said passive microstrip isolator is arranged in a passive device form between said dual-coupled dipoles and said microwave chip, and is electrically connected to said transmission port of said microwave chip at said second port and to said receiving port of said microwave chip at said third port, and said first feeding end of each pair of said dual-coupled dipoles is electrically connected to said first port of said passive microstrip isolator.

[0024] In an embodiment, wherein said first radiating source pole and said second radiating source pole of each pair of said pair of dual-coupled poles are misaligned in a front-rear direction, wherein said front-rear direction is a direction perpendicular to said left-right direction along said reference ground plane.

[0025] In an embodiment, wherein said array-coupled microwave detection antenna with a narrow detection region comprises antenna substrates corresponding to the number of said pair of dual-coupled poles, wherein said first radiating source pole and said second radiating source pole of each pair of said pair of dual-coupled poles are carried in the form of a strip conductor on two opposite surfaces of the corresponding said antenna substrate, thereby forming a structure in which said first radiating source pole and said second radiating source pole are misaligned in said front-rear direction.

[0026] Further purposes and advantages of the present application will be fully understood from the following description and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1A is a structure of an existing planar antenna and a simulation diagram thereof.

[0028] Figure 1B is an application scene diagram of an existing planar antenna in an underground garage.

[0029] Figures 2A-2C is a principle structure diagram of an array-coupled microwave detection antenna with a narrow detection region according to the present application.

[0030] Figure 3 is a structure diagram of an array-coupled microwave detection antenna with a narrow detection region according to an embodiment of the present application.

[0031] Figure 4 is a structure diagram of an array-coupled microwave detection antenna with a narrow detection region according to the above-mentioned embodiment of the present application.

[0032] Figure 5 is a simulation diagram of an array-coupled microwave detection antenna with a narrow detection region according to the above-mentioned embodiment of the present application.

[0033] Figure 6 is a detection beam diagram of an array-coupled microwave detection antenna with a narrow detection region according to the above-mentioned embodiment of the present application.

[0034] Figure 7A is a feeding diagram of an array-coupled microwave detection antenna with a narrow detection region according to the above-mentioned embodiment of the present application.

[0035] Figure 7BA schematic view of a variant structure of the array-coupled microwave detection antenna with a long and narrow detection area according to the above embodiment of the present application.

[0036] Figure 7C A schematic view of a variant structure of the array-coupled microwave detection antenna with a long and narrow detection area according to the above embodiment of the present application.

[0037] Figure 8A And Figure 8B A schematic view of a comparison between a detection beam of the array-coupled microwave detection antenna with a long and narrow detection area according to the present application and a detection beam of an existing antenna.

[0038] Figure 9 A schematic view of a variant structure of the array-coupled microwave detection antenna with a long and narrow detection area according to the above embodiment of the present application.

[0039] Figure 10 A simulation schematic view of the variant structure shown. Figure 9

[0040] Figure 11 A schematic view of a variant structure of the array-coupled microwave detection antenna with a long and narrow detection area according to the above embodiment of the present application.

[0041] Figure 12 A simulation schematic view of the variant structure shown. Figure 11

[0042] Figure 13 A schematic view of a variant structure of the array-coupled microwave detection antenna with a long and narrow detection area according to the above embodiment of the present application.

[0043] Figure 14 A schematic view of a variant structure of the array-coupled microwave detection antenna with a long and narrow detection area according to the above embodiment of the present application

[0044] Figure 15 A schematic view of an application scenario of the array-coupled microwave detection antenna with a long and narrow detection area according to the above embodiment of the present application applied to an underground garage.

[0045] Figure 16 A schematic view of an application scenario of the array-coupled microwave detection antenna with a long and narrow detection area according to the above embodiment of the present application applied to an underground garage.

[0046] Figure 17 A schematic view of an application scenario of the array-coupled microwave detection antenna with a long and narrow detection area according to the above embodiment of the present application applied to a warehouse.

[0047] ​​Figure 18 The application scenario diagram of the array coupling microwave detection antenna with a long and narrow detection area applied to an outdoor horizontal side-mounted application scenario according to the above embodiment of the application.

[0048] Figure 19 The application scenario diagram of the array coupling microwave detection antenna with a long and narrow detection area applied to an outdoor horizontal side-mounted application scenario according to the above embodiment of the application. DETAILED DESCRIPTION

[0049] The following description is provided to enable any person skilled in the art to practice the present application. The preferred embodiments described herein are only examples of the present application and the best mode contemplated by the inventors. Other variations and modifications can be used as would be obvious to one skilled in the art. The present application defined in the claims is not intended to be limited by the preferred embodiments set forth in the following description.

[0050] It should be understood by those skilled in the art that in the disclosure of the present application, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation of the present application.

[0051] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.

[0052] With reference to the drawings of the specification of the present application Figures 2A-2C , the basic principle structure of the array coupling microwave detection antenna with a long and narrow detection area provided by the present application is shown, wherein the array coupling microwave detection antenna with a long and narrow detection area comprises at least two pairs of dual-coupled dipoles 10, with reference to Figures 2A-2C , the dual-coupled dipole 10 comprises a first radiation source pole 11 and a second radiation source pole 12, the first radiation source pole 11 has a first feeding end 111, the second radiation source pole 12 has a second feeding end 121, the first feeding end 111 and the second feeding end 121 are close to each other, wherein the first radiation source pole 11 and the second radiation source pole 12 extend from the first feeding end 111 and the second feeding end 121 respectively and have initial extension directions away from each other, corresponding to Figure 2A, the initial extension directions are mutually away and downward directions, corresponding to Figure 2B , the initial extension directions are mutually away and upward directions, corresponding to Figure 2C , the initial extension directions are away from each other in the direction of the extension, then corresponding to the pair of dual-coupled dipoles 10 have mutually away directions a1 and a2, wherein the direction a1 of the first radiation source pole 11 away from the second radiation source pole 12 is right, and the direction a2 of the second radiation source pole 12 away from the first radiation source pole 11 is left, defined as the left and right directions of the pair of dual-coupled dipoles 10.

[0053] Specifically, referring to the drawings of the description of the present application Figures 3-6 , the structure of the array-coupled microwave detection antenna 100 with a long and narrow detection area and the simulation and formation of the detection beam 1000 corresponding to the structure are shown, wherein the array-coupled microwave detection antenna 100 with a long and narrow detection area includes a reference ground 20 and a substrate 30, wherein each pair of the dual-coupled dipoles 10 of the array-coupled microwave detection antenna 100 with a long and narrow detection area is arranged on the same side of the reference ground 20 with the first radiation source pole 11 and the second radiation source pole 12 extending away from each other in the left and right directions, that is, one pair of the dual-coupled dipoles 10 determines the left and right directions of the pair of dual-coupled dipoles 10, and other pairs of the dual-coupled dipoles 10 are arranged on the same side of the reference ground 20 as the pair of dual-coupled dipoles 10 and have the same mutually away direction as the left and right directions of the pair of dual-coupled dipoles 10. Wherein the space distance between the midpoint of the line between the first feeding end 111 and the second feeding end 121 of one pair of the dual-coupled dipoles 10 and the midpoint of the line between the first feeding end 111 and the second feeding end 121 of another pair of the dual-coupled dipoles 10 is less than λ, wherein λ is the wavelength parameter corresponding to the frequency parameter f of the array-coupled microwave detection antenna 100 with a long and narrow detection area and satisfies λ = c / f, wherein c is the speed of light, and in the state that each pair of the dual-coupled dipoles 10 is excited, please refer to Figure 5 and Figure 6As shown, the energy generated by each pair of the dual-coupled dipoles 10 is coherently superimposed to form a detection beam 1000 together, and the mutual influence of the energy generated by each pair of the dual-coupled dipoles 10 causes the energy of the detection beam 1000 in the left-right direction (corresponding to the positive and negative directions of the y-axis in the figure) to be compressed, so that the array-coupled microwave detection antenna 100 with a long and narrow detection region has a long and narrow detection region that is adjusted to be narrow in the left-right direction, and the detection distance of the array-coupled microwave detection antenna 100 in the left-right direction is compressed to about 10 meters, so that the array-coupled microwave detection antenna 100 with a long and narrow detection region is suitable for long and narrow target detection space.

[0054] And the mutual influence of the energy generated by each pair of the dual-coupled dipoles 10 causes the energy of the detection beam in the front-back direction to be enhanced, where the front-back direction is the direction perpendicular to the left-right direction along the reference ground 20, i.e., the positive and negative directions of the x-axis in the figure, and the beam angle of the array-coupled microwave detection antenna 100 with a long and narrow detection region in the front-back direction is about 170°, far exceeding the beam angle of about 100° in the front-back direction of the existing planar antenna, so that the detection distance of the array-coupled microwave detection antenna 100 in the front-back direction is improved, and a detection distance of more than 30 meters can be achieved in the front-back direction, so as to adapt to long and narrow target detection space.

[0055] That is, the array-coupled microwave detection antenna 100 with a long and narrow detection region reduces radiation in the left-right direction, thereby avoiding interference of the array-coupled microwave detection antenna 100 with a long and narrow detection region in the left-right direction, improving the detection reliability of the array-coupled microwave detection antenna 100 with a long and narrow detection region in long and narrow target detection region, and the array-coupled microwave detection antenna 100 with a long and narrow detection region enhances radiation in the front-back direction, improving the adaptability of the array-coupled microwave detection antenna 100 with a long and narrow detection region in long and narrow target detection region, thereby improving the adaptability of the array-coupled microwave detection antenna 100 with a long and narrow detection region to the environment and enabling reliable application in long and wide long and narrow scenes such as underground garages, warehouse shelves, courtyards, and outdoors.

[0056] Reference Figure 8A And Figure 8B As can be seen intuitively, the array-coupled microwave detection antenna 100 with a long and narrow detection region is compressed in the left-right direction and enhanced in the front-back direction compared to the existing planar antenna and single pair of dual-coupled dipole antenna, and can form a clear long and narrow detection region.

[0057] And it is worth mentioning that, compared with the existing flat antenna, the excitation field and energy point generated by the dual-coupled dipole 10 when being excited are lifted, so that the flattening effect of the detection beam 1000 formed by the phase interference of the two pairs of dual-coupled dipoles 10 is better than that of the existing flat antenna, and the far distance coverage range in the front-back direction can be met.

[0058] Further, in the embodiments of the present application, the initial extension direction of the first radiation source pole 11 and the second radiation source pole 12 of the dual-coupled dipole 10 is the back direction away from each other along the left-right direction, and each pair of dual-coupled dipoles 10 is arranged along the left-right direction so that the initial extension direction of the first radiation source pole 11 and the second radiation source pole 12 of each pair of dual-coupled dipoles 10 is on the same straight line, that is, the two pairs of dual-coupled dipoles 10 are arranged in a state that one pair of dual-coupled dipoles 10 is on the left or right side of the other pair of dual-coupled dipoles 10, wherein the first radiation source pole 11 and the second radiation source pole 12 extend away from each other along the left-right direction from the first feeding end 111 and the second feeding end 121 respectively, and are bent to extend towards the direction close to the reference ground 20, so that the first radiation source pole 11 has a structure form that the distance between the first feeding end 111 and the reference ground 20 is greater than the distance between the other end of the first radiation source pole 11 and the reference ground 20, and the second radiation source pole 12 has a structure form that the distance between the second feeding end 121 and the reference ground 20 is greater than the distance between the other end of the second radiation source pole 12 and the reference ground 20, wherein the first radiation source pole 11 and the second radiation source pole 12 respectively have a length greater than or equal to λ / 16, the distance between the first feeding end 111 and the second feeding end 121 is less than or equal to λ / 32, and the distance between the first feeding end 111 and the second feeding end 121 and the reference ground 20 is greater than or equal to λ / 32.

[0059] Further, the dual-coupled dipole 10 includes a first feeding line 13 and a second feeding line 14, wherein the first feeding line 13 extends from the first feeding end 111 to the reference ground 20, and the second feeding line 14 extends from the second feeding end 121 to the reference ground 20. In this embodiment of the present application, the first radiation source pole 11 and the second radiation source pole 12 are supported by the first feeding line 13 and the second feeding line 14 on the base plate 30, and are arranged on one side of the reference ground 20.

[0060] Corresponding to in this embodiment of the utility model, wherein the first feeder line 13 is fixed on the substrate 30 and is electrically connected to the corresponding feed source, wherein the second feeder line 14 is fixed on the substrate 30 and is electrically connected to the reference ground 20.

[0061] Corresponding to Figure 7A As shown in the figure, wherein two pairs of adjacent the doublet coupled dipole 10 are set with the structure form of opposite direction of the extension direction of the first radiation source pole 11.It is worth mentioning that, in the description corresponding to the utility model, the radiation source pole of access excitation signal is defined as the first radiation source pole 11.In some description, the first radiation source pole 11 and the second radiation source pole 12 can also be defined in the direction away from each other, the radiation source pole extending to the right is the first radiation source pole 11 and the radiation source pole extending to the left is the second radiation source pole 12, corresponding to Figure 7A As shown in the structure of the figure, two pairs of adjacent the doublet coupled dipole 10 along the left and right direction can also be described as being fed reversely, the first radiation source pole 11 of the doublet coupled dipole 10 on the left of the figure is accessed to the excitation signal, and the second radiation source pole 12 is grounded, the second radiation source pole 12 of the doublet coupled dipole 10 on the right is accessed to the excitation signal, and the first radiation source pole 11 is grounded.

[0062] Corresponding to Figure 7B As shown in the figure, wherein two pairs of adjacent the doublet coupled dipole 10 are set with the structure form of the extension direction of the first radiation source pole 11 being in the same direction.It is worth mentioning that, in the definition of the first radiation source pole 11 and the second radiation source pole 12 with position, corresponding to Figure 7B As shown in the structure of the figure, two pairs of adjacent the doublet coupled dipole 10 along the left and right direction can also be described as being fed reversely, the first radiation source pole 11 of the doublet coupled dipole 10 on the left of the figure is accessed to the excitation signal, and the second radiation source pole 12 is grounded, the second radiation source pole 12 of the doublet coupled dipole 10 on the right is accessed to the excitation signal, and the first radiation source pole 11 is grounded.

[0063] Corresponding to Figure 7CAs shown in the figure, the array of microwave detection antennas 100 with the long and narrow detection region is coupled to a passive microstrip isolator 40 and a microwave chip 50, wherein the passive microstrip isolator 40 is provided with a first port 401, a second port 402 and a third port 403 in the form of a Wilkinson power divider, and includes a first microstrip connecting line 41 connected between the first port 401 and the second port 402, a second microstrip connecting line 42 connected between the first port 401 and the third port 403, and a resistor 43 connected between the second port 402 and the third port 403, wherein the sum of the lengths of the first microstrip connecting line 41 and the second microstrip connecting line 42 approaches one-half of the wavelength electrical length within an error range of 20%, and wherein the microwave chip 50 is designed in a transceiver separation design and has different ports as a transmission port 501 for outputting an excitation signal and a receiving port 502 for accessing a feedback signal, wherein the passive microstrip isolator 40 is arranged between the dual-coupled dipole 10 and the microwave chip 50 in the form of a passive device, and is electrically connected to the transmission port 501 of the microwave chip 50 at the second port 402 and to the receiving port 502 of the microwave chip 50 at the third port 403, and each first feed end 111 of the dual-coupled dipole 10 is electrically connected to the first port 401 of the passive microstrip isolator 40, so that the excitation signal output from the transmission port 501 of the microwave chip 50 can be transmitted to the first feed end 111 of the dual-coupled dipole 10 and isolated from the receiving port 502 of the microwave chip 50 at a high isolation degree, and the feedback signal output from the first feed end 111 of the dual-coupled dipole 10 can be transmitted to the receiving port 502 of the microwave chip 50, so that the feedback signal received by the receiving port 502 of the microwave chip 50 can be isolated from the excitation signal at a high isolation degree, thereby realizing the transceiver separation of the dual-coupled dipole 10 at a high isolation degree and matching the microwave chip 50 designed in a transceiver separation design.

[0064] It is worth mentioning that in some embodiments of the present application, each pair of dual-coupled dipoles 10 can also be arranged to be differentially fed at the first feed end 111 and the second feed end 121, and each pair of dual-coupled dipoles 10 accesses the in-phase excitation signal at the first feed end 111

[0065] Preferably, the spatial distance L between the first feed terminals 111 and the second feed terminals 121 of two adjacent pairs of the dual coupled poles 10 and the midpoint of the line connecting the first feed terminals 111 and the second feed terminals 121 of one pair of the dual coupled poles 10 and the midpoint of the line connecting the first feed terminals 111 and the second feed terminals 121 of the other pair of the dual coupled poles 10 is greater than or equal to λ / 4 and less than or equal to 3λ / 4, which is beneficial to the miniaturization of the array-coupled microwave detection antenna 100 with a narrow detection area in the left-right direction.

[0066] Furthermore, the spatial distance L between the midpoint of the line connecting the first feed terminals 111 and the second feed terminals 121 of two adjacent pairs of the dual coupled poles 10 and the midpoint of the line connecting the first feed terminals 111 and the second feed terminals 121 of one pair of the dual coupled poles 10 and the midpoint of the line connecting the first feed terminals 111 and the second feed terminals 121 of the other pair of the dual coupled poles 10 is preferably greater than or equal to 3λ / 8 and less than or equal to 5λ / 8, in order to facilitate the miniaturization of the array-coupled microwave detection antenna 100 with a narrow detection area in the left-right direction.

[0067] It is worth mentioning that, in some modified structures, the dimensions of the array-coupled microwave detection antenna 100 with a narrow detection region in the left-right direction can be further reduced based on the staggered design of each pair of dual-coupled poles 10. See [reference needed] for details. Figure 9 and Figure 10 As shown, a deformed structure of the array-coupled microwave detection antenna 100 with a narrow detection area and a corresponding simulation are illustrated. Two adjacent pairs of dual coupling poles 10 are misaligned in the front-back direction, with the positive x-axis direction in the figure defined as the front and the negative x-axis direction as the rear. The right-side dual coupling pole 10 is located to the right front of the left-side dual coupling pole 10, and the radiation source pole of the left-side dual coupling pole 10 located on the right is misaligned with the radiation source pole of the right-side dual coupling pole 10 located on the left in the front-back direction, forming a structure where two pairs of dual coupling poles 10 are misaligned in the front-back direction. That is, two adjacent pairs of dual coupling poles 10 can be misaligned such that one pair of dual coupling poles 10 is located to the left front, right front, left rear, or right rear of the other pair of dual coupling poles 10, correspondingly reducing the size of the array-coupled microwave detection antenna 100 with a narrow detection area in the left-right direction.

[0068] Further, refer to Figure 11 and Figure 12As shown in the figure, a variant structure of the microwave detection antenna 100 with the array of long and narrow detection regions and the simulation corresponding to the variant structure are shown, wherein the first radiation source pole 11 and the second radiation source pole 12 of each pair of the dual-coupled poles 10 are staggered in the front-rear direction, that is, the second radiation source pole 12 is located at one of the right front, right rear, left front and left rear of the first radiation source pole 11, so that the dual-coupled poles 10 are staggered.

[0069] Further, the microwave detection antenna 100 with the array of long and narrow detection regions includes antenna substrates 60 corresponding to the number of the dual-coupled poles 10, wherein the first radiation source pole 11 and the second radiation source pole 12 of each pair of the dual-coupled poles 10 are carried in the form of strip conductors on two opposite surfaces of the corresponding antenna substrate 60, thereby forming a structure form in which the first radiation source pole 11 and the second radiation source pole 12 are staggered in the front-rear direction, and the structure stability of the dual-coupled poles 10 can be improved based on the carrying of the antenna substrate 60.

[0070] In particular, referring to Figure 13 As shown in the figure, two adjacent pairs of the dual-coupled poles 10 can also be arranged in a state in which one pair of the dual-coupled poles 10 is on the front side or the rear side of the other pair of the dual-coupled poles 10, so as to facilitate reducing the size of the microwave detection antenna 100 with the array of long and narrow detection regions in the left-right direction.

[0071] It is worth mentioning that in the above structure of the utility model, the microwave detection antenna 100 with the array of long and narrow detection regions includes two pairs of the dual-coupled poles 10, but this does not constitute a limitation on the utility model, and in some variant embodiments, the number of the dual-coupled poles 10 can also be multiple, in particular, referring to Figure 14 As shown in the figure, a variant structure of the microwave detection antenna 100 with the array of long and narrow detection regions is shown, wherein the microwave detection antenna 100 with the array of long and narrow detection regions includes multiple pairs of the dual-coupled poles 10, and the multiple pairs of the dual-coupled poles 10 are arranged along the left-right direction.

[0072] In particular, the microwave detection antenna 100 with the array of long and narrow detection regions has the detection beam 1000 compressed in the left-right direction and enhanced in the front-rear direction, so that the microwave detection antenna 100 with the array of long and narrow detection regions is suitable for long and narrow scenes such as underground garages, warehouse shelves, courtyards and outdoor scenes.

[0073] Referring to Figure 15The array coupling microwave detection antenna 100 with long and narrow detection area is applied to an underground garage, and based on the long and narrow detection beam 1000, the array coupling microwave detection antenna 100 with long and narrow detection area can form a long coverage range in front of the parking space and provide a long detection distance in the direction of the vehicle, so as to timely trigger the corresponding lamps when the vehicle is moving in the channel, and the array coupling microwave detection antenna 100 with long and narrow detection area can form a narrow coverage range on both sides of the channel, so as to effectively prevent the object on the adjacent channel from being moved to cause false triggering.

[0074] Reference Figure 16 The array coupling microwave detection antenna 100 with long and narrow detection area is applied to an underground garage, and based on the long and narrow detection beam 1000, the array coupling microwave detection antenna 100 with long and narrow detection area can form a long coverage range in front of the parking space and provide a long detection distance in the direction of the vehicle, so as to timely trigger the corresponding lamps when the vehicle is moving in the channel, and the array coupling microwave detection antenna 100 with long and narrow detection area can form a narrow coverage range on both sides of the channel, so as to effectively prevent the object on the adjacent channel from being moved to cause false triggering.

[0075] Reference Figure 17 The array coupling microwave detection antenna 100 with long and narrow detection area is applied to an underground garage, and based on the long and narrow detection beam 1000, the array coupling microwave detection antenna 100 with long and narrow detection area can form a long coverage range in front of the parking space and provide a long detection distance in the direction of the vehicle, so as to timely trigger the corresponding lamps when the vehicle is moving in the channel, and the array coupling microwave detection antenna 100 with long and narrow detection area can form a narrow coverage range on both sides of the channel, so as to effectively prevent the object on the adjacent channel from being moved to cause false triggering.

[0076] Reference Figure 18 The array coupling microwave detection antenna 100 with long and narrow detection area is applied to an underground garage, and based on the long and narrow detection beam 1000, the array coupling microwave detection antenna 100 with long and narrow detection area can form a long coverage range in front of the parking space and provide a long detection distance in the direction of the vehicle, so as to timely trigger the corresponding lamps when the vehicle is moving in the channel, and the array coupling microwave detection antenna 100 with long and narrow detection area can form a narrow coverage range on both sides of the channel, so as to effectively prevent the object on the adjacent channel from being moved to cause false triggering.

[0077] Reference Figure 19The array coupling microwave detection antenna 100 with the long and narrow detection area is applied to an outdoor horizontal side-mounted application scene, and specifically, the array coupling microwave detection antenna 100 with the long and narrow detection area is horizontally installed on a house wall, and the left-right direction of the array coupling microwave detection antenna 100 with the long and narrow detection area corresponds to the height direction of the house, wherein the detection beam 1000 can form a long-distance detection area along the house, so that a person walking around the house can be triggered, and the array coupling microwave detection antenna 100 with the long and narrow detection area is suitable for triggering of outdoor lighting around the house and alerting around the house.

[0078] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, a person skilled in the art can combine and combine different embodiments or features of different embodiments or examples described in the present specification without contradiction.

[0079] It should be understood by those skilled in the art that the embodiments of the present application shown in the above description and drawings are only examples and do not limit the present application. The purpose of the present application has been completely and effectively achieved. The function and structural principle of the present application has been shown and described in the embodiments, and the implementation of the present application can be any modification or modification without departing from the principle.

Claims

1. An array coupled microwave probe antenna having an elongated probe region, characterized by, Comprising: a reference ground plane; and at least two pairs of dual-coupled dipoles, wherein each pair of the dual-coupled dipoles comprises a first radiating source and a second radiating source disposed on the same side of the reference ground plane, the first radiating source having a first feed end and the second radiating source having a second feed end, wherein the first radiating source and the second radiating source extend from the first feed end and the second feed end respectively and have initial extending directions away from each other, and the left-right direction of any pair of the dual-coupled dipoles is defined as the direction away from each other of the pair of the dual-coupled dipoles, and other pairs of the dual-coupled dipoles are disposed on the same side of the reference ground plane as the pair of the dual-coupled dipoles and have the same direction away from each other as the left-right direction of the pair of the dual-coupled dipoles, and the spatial distance between the mid-point of the line connecting the first feed end and the second feed end of one pair of the dual-coupled dipoles and the mid-point of the line connecting the first feed end and the second feed end of another pair of the dual-coupled dipoles is less than λ, where λ is the wavelength parameter corresponding to the frequency parameter of the array-coupled microwave detection antenna having the elongated detection region.

2. The array-coupled microwave detection antenna having the elongated detection region according to claim 1, wherein the first radiating source and the second radiating source have a line length greater than or equal to λ / 16, the first feed end and the second feed end are close to each other within a distance range less than or equal to λ / 32, the distance between the first feed end and the second feed end and the reference ground plane is greater than or equal to λ / 32, the distance between the first feed end and the reference ground plane is greater than the distance between the other end of the first radiating source and the reference ground plane, and the distance between the second feed end and the reference ground plane is greater than the distance between the other end of the second radiating source and the reference ground plane.

3. The array-coupled microwave detection antenna having the elongated detection region according to claim 2, wherein the spatial distance between the mid-point of the line connecting the first feed end and the second feed end of one pair of the dual-coupled dipoles and the mid-point of the line connecting the first feed end and the second feed end of another pair of the dual-coupled dipoles is greater than or equal to λ / 4 and less than or equal to 3λ / 4.

4. The array-coupled microwave detection antenna having the elongated detection region according to claim 2, wherein the spatial distance between the mid-point of the line connecting the first feed end and the second feed end of one pair of the dual-coupled dipoles and the mid-point of the line connecting the first feed end and the second feed end of another pair of the dual-coupled dipoles is greater than or equal to 3λ / 8 and less than or equal to 5λ / 8. ​ 5. The array-coupled microwave probe antenna having a narrow and long probe region according to claim 3, wherein two adjacent pairs of said dual-coupled dipoles are arranged in a state that one pair of said dual-coupled dipoles is on the left side or the right side of the other pair of said dual-coupled dipoles.

6. The array-coupled microwave probe antenna having a narrow and long probe region according to claim 3, wherein two adjacent pairs of said dual-coupled dipoles are staggered in an anterior-posterior direction, wherein said anterior-posterior direction is a direction perpendicular to said left-right direction along said reference ground plane, corresponding to one of a left front, a right front, a left rear and a right rear position of one pair of said dual-coupled dipoles with respect to the other pair of said dual-coupled dipoles.

7. The array-coupled microwave probe antenna having a narrow and long probe region according to claim 3, wherein two adjacent pairs of said dual-coupled dipoles are arranged in a state that one pair of said dual-coupled dipoles is on the anterior side or the posterior side of the other pair of said dual-coupled dipoles, wherein said anterior-posterior direction is a direction perpendicular to said left-right direction along said reference ground plane.

8. The array-coupled microwave probe antenna having a narrow and long probe region according to claim 3, wherein each pair of said dual-coupled dipoles is fed at said first feeding end and grounded at said second feeding end.

9. The array-coupled microwave probe antenna having a narrow and long probe region according to claim 3, wherein each pair of said dual-coupled dipoles is differentially fed at said first feeding end and said second feeding end, and each pair of said dual-coupled dipoles is fed with in-phase excitation signals at said first feeding end.

10. The array-coupled microwave probe antenna having a narrow and long probe region according to claim 8, wherein two adjacent pairs of said dual-coupled dipoles are arranged in a configuration that the extension direction of said first radiating dipole is the same.

11. The array-coupled microwave probe antenna having a narrow and long probe region according to claim 8, wherein two adjacent pairs of said dual-coupled dipoles are arranged in a configuration that the extension direction of said first radiating dipole is opposite.

12. The array-coupled microwave probe antenna having a narrow and long probe region according to claim 1, wherein the array-coupled microwave probe antenna having a narrow and long probe region comprises a passive microstrip isolator and a microwave chip, wherein the passive microstrip isolator has a first port, a second port and a third port, and comprises a first microstrip connecting line connected between the first port and the second port, a second microstrip connecting line connected between the first port and the third port, and a resistance connected between the second port and the third port, wherein the sum of the lengths of the first microstrip connecting line and the second microstrip connecting line approximates to one half of the wavelength electrical length within an error range of 20%, and wherein the microwave chip adopts a transmit-receive separation design and has different ports as a transmission port for outputting an excitation signal and a reception port for accessing a feedback signal, respectively, wherein the passive microstrip isolator is arranged between the dual-coupled dipoles and the microwave chip in a passive device form, and is electrically connected to the transmission port of the microwave chip at the second port and to the reception port of the microwave chip at the third port, and the first feeding end of each of the dual-coupled dipoles is electrically connected to the first port of the passive microstrip isolator.

13. The array-coupled microwave probe antenna having a narrow and long probe region according to claim 1, wherein the first radiation source pole and the second radiation source pole of each pair of the dual-coupled dipoles are misaligned in a front-rear direction, wherein the front-rear direction is a direction perpendicular to the left-right direction along the reference ground.

14. The array-coupled microwave probe antenna having a narrow and long probe region according to claim 13, wherein the array-coupled microwave probe antenna having a narrow and long probe region comprises antenna substrates corresponding to the number of the dual-coupled dipoles, and wherein the first radiation source pole and the second radiation source pole of each pair of the dual-coupled dipoles are carried in a strip conductor form on two opposite surfaces of the corresponding antenna substrate, thereby forming a structure form in which the first radiation source pole and the second radiation source pole are misaligned in the front-rear direction.

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