CN212257695U - High-reliability receiving and transmitting separated microwave Doppler detection antenna - Google Patents

Abstract

The utility model discloses a high reliability receiving and dispatching microwave Doppler detecting antenna who separates, wherein high reliability receiving and dispatching microwave Doppler detecting antenna who separates includes a reference ground base plate, by bear in a reference ground and two at least radiants of reference ground base plate, wherein two the radiants are orthogonal state by the interval set up in the reference ground, wherein each the radiants is provided with a feed point, wherein when two the radiants respectively in the feed point when being fed, form a receiving antenna in one of them radiants, and form a transmitting antenna in another the radiants, wherein through the structure and the mode that two the radiants orthogonally arranged, high reliability receiving and dispatching microwave Doppler detecting antenna who separates can also be miniaturized the setting when guaranteeing the isolation between receiving antenna and the transmitting antenna, and a uniform detection area can be formed, and the detection effect is reliable and accurate.

Description

High-reliability receiving and transmitting separated microwave Doppler detection antenna

Technical Field

The utility model relates to a microwave detection field especially relates to a microwave Doppler surveys antenna of high reliability receiving and dispatching separation.

Background

An antenna is a transducer that converts a guided wave propagating on a transmission line into an electromagnetic wave propagating through an unbounded medium or vice versa, and is therefore widely used in radio devices for communication, broadcasting, television, radar, navigation, and the like, for transmitting or receiving an electromagnetic wave. Based on the reciprocity theorem of antennas, the same antenna can be used as both a transmitting antenna and a receiving antenna, and the basic characteristic parameters of the same antenna as the transmitting antenna or the receiving antenna are the same. However, because the detection accuracy of the receiving and transmitting integrated antenna is low, high-frequency antennas for navigation and obstacle avoidance of automobiles, such as antennas larger than 5.8GHz, are generally arranged in the industry in a receiving and transmitting separation mode. Because the detection area ranges required by different application scenes are different, the antenna applied to automobile navigation, obstacle avoidance, industrial automatic control and automatic door control pursues to form a narrow-angle detection beam in practical application, and the shape of the detection area pursued to be formed is in a long and narrow shape and a flat shape; in the field of human body activity detection, different from antennas applied to automobile navigation, obstacle avoidance, industrial automatic control and automatic door control, the antennas applied to the field of human body activity detection pursue to form a detection beam with a large beam angle, a detection area correspondingly pursued to form is in a circular state, the uniformity of detection distance of the antennas applied to the field of human body activity detection is higher, the peripheral induction distances are consistent, and the detection reliability and accuracy of the antennas can be guaranteed. However, the detection area formed by the existing antenna for detecting human body activity has an elliptical detection surface, and the antenna has different detection distances in different directions due to different energies radiated by the antenna in different directions, that is, the detection distances of the antenna around the antenna are not uniform, which is not favorable for the reliability and stability of human body activity detection. In addition, when the beam angle corresponding to the detection beam formed by the antenna is larger, the range of the detection area corresponding to the antenna is larger, and accordingly, the range of the detection area corresponding to the antenna with a narrow beam angle is smaller, and it can be understood that the beam angle formed by the electromagnetic wave emitted by the antenna corresponds to an area with the largest energy density radiated by the antenna in the working state, and the area can be divided into a high-density area and a low-density area. Therefore, the existing antenna with narrow beam angle is not beneficial to the reliability and accuracy of human body activity detection.

In order to solve the problem that the detection result of the antenna on the human body movement is unreliable and unstable due to the inconsistent detection distance of the existing antenna, the patent application with the application number of 201920557050.8 discloses a doppler microwave radar 30P with good coverage symmetry. As shown in fig. 1A to 1C, the doppler microwave radar 30P with good coverage symmetry includes an antenna unit for receiving and transmitting microwave signals, wherein the antenna unit includes a rectangular panel 31P, and a transmitting antenna group 34P and a receiving antenna group 33P disposed on the rectangular panel 31P, the transmitting antenna group 34P includes a first transmitting rectangular antenna 341P and a second transmitting rectangular antenna 342P, the receiving antenna group 33P includes a first receiving rectangular antenna 331P and a second receiving rectangular antenna 332P, wherein the first transmitting rectangular antenna 341P and the long side of the first receiving rectangular antenna 331P are parallel to the long side of the rectangular panel 31P, wherein a first isolating device 35P is disposed between the first receiving rectangular antenna 331P and the second receiving rectangular antenna 332P, wherein a second isolating device 36P is disposed between the first transmitting rectangular antenna 341P and the second transmitting antenna, each rectangular antenna has a long side of the same length and a short side of the same length so that each of the four sides of the rectangular panel 31P has the same antenna length. As shown in fig. 1B, the shape of the detection region 301P formed by the doppler microwave radar 30P having good coverage symmetry is relatively uniform, and it can be seen that the detection region 301P formed by the doppler microwave radar 30P having good coverage symmetry is capable of covering a relatively wide energy-dense region. It should be noted that, as shown in fig. 1C, as can be seen from the beam angle of the doppler microwave radar 30P with good coverage symmetry during operation, the beam angle of the detection beam corresponding to the doppler microwave radar 30P with good coverage symmetry during operation is larger than that of a common panel antenna, and the coverage area corresponding to the detection region 301P is relatively larger. However, the doppler microwave radar 30P with good coverage symmetry includes a plurality of the rectangular antennas, and the arrangement of the plurality of rectangular antennas tends to occupy a larger area on the rectangular panel 31P, so that the doppler microwave radar 30P with good coverage symmetry is correspondingly limited to have a larger volume, which is not favorable for the installation and application of the doppler microwave radar 30P with good coverage symmetry. In addition, the arrangement among the plurality of rectangular antennas inevitably increases the difficulty of arrangement, and even if the difference of small distance parameters may affect the final working parameters of the doppler microwave radar 30P with good coverage symmetry and directly affect the detection effect of the doppler microwave radar 30 with good coverage symmetry, so that the arrangement process of the doppler microwave radar 30P with good coverage symmetry of the plurality of rectangular antennas is more complicated and difficult.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a microwave doppler survey antenna of high reliability receiving and dispatching separation, wherein the microwave doppler survey antenna of high reliability receiving and dispatching separation can also have little volume when can keeping the isolation between receiving antenna and the transmitting antenna to can form and be the circular shape even detection region, detection result reliability and accuracy are high.

Another object of the present invention is to provide a highly reliable microwave doppler probe antenna with separate receiving and transmitting functions, wherein the high-reliability transceiving separated microwave Doppler detection antenna comprises a reference ground substrate, a reference ground carried on one surface of the reference ground substrate and at least two radiation sources which are arranged on the reference ground at intervals in an orthogonal state, wherein both of said radiation sources are provided with a feeding point, respectively, wherein when both of said radiation sources are fed at said feeding points, respectively, forming a transmitting antenna on one of the radiation sources and a receiving antenna on the other radiation source, wherein the high-reliability transceiving separated microwave Doppler detection antenna reduces the number of radiation sources, through the structure and the mode of orthogonally arranging the two radiation sources, the receiving and transmitting isolation degree between the transmitting antenna and the receiving antenna is ensured, and the volume is small.

Another object of the present invention is to provide a high-reliability transmit-receive separated microwave doppler detection antenna, wherein the reference ground has two long sides and connects two broad sides of the long sides, wherein the direction of the feed point to its physical central point of each radiation source is a polarization direction, and the side of the polarization direction of each radiation source is a polarization side, wherein in the polarization direction of the radiation source corresponding to the polarization side parallel to the broad side of the reference ground, it is a parameter d1 to set the distance between the radiation source corresponding to the polarization side parallel to the broad side of the reference ground and the radiation source corresponding to the polarization side parallel to the long side of the reference ground as a parameter d1, wherein the numerical range of the parameter d1 is set to satisfy: d1 is more than or equal to lambda/64, wherein lambda is the wavelength of the electromagnetic wave generated by the high-reliability transceiving microwave Doppler detection antenna when in operation, so that the transceiving isolation between the transmitting antenna and the receiving antenna can be ensured, and the high-reliability transceiving microwave Doppler detection antenna can have a smaller volume.

Another object of the present invention is to provide a high-reliability microwave doppler probe antenna with separate transmission and reception, in an embodiment of the present invention, wherein the numerical range of the parameter d1 is set to satisfy: d1 is more than or equal to 3 lambda/16, wherein lambda is the wavelength of the electromagnetic wave generated by the high-reliability transceiving microwave Doppler detection antenna when in operation, so that the transceiving isolation between the transmitting antenna and the receiving antenna is ensured, and the high-reliability transceiving microwave Doppler detection antenna has a smaller volume.

Another object of the present invention is to provide a high-reliability microwave doppler probe antenna with separate transmission and reception, in an embodiment of the present invention, wherein in the polarization direction of the radiation source corresponding to the long side of the polarization side parallel to the reference ground, the distance between the radiation source corresponding to the long side of the polarization side parallel to the reference ground and the radiation source corresponding to the wide side of the polarization side parallel to the reference ground is a parameter d2, wherein the numerical range of the parameter d2 is set to satisfy: d2 is more than or equal to lambda/8, wherein lambda is the wavelength of the electromagnetic wave generated by the high-reliability transceiving microwave Doppler detection antenna when in operation, so that the transceiving isolation between the transmitting antenna and the receiving antenna is ensured, and the high-reliability transceiving microwave Doppler detection antenna has a smaller volume.

Another object of the present invention is to provide a high-reliability microwave doppler detection antenna with separate receiving and transmitting functions, wherein the side length of the polarized edge of the radiation source is a parameter a, wherein the numerical range of the parameter a is set to satisfy: lambda/2 is more than or equal to a and more than or equal to lambda/4, wherein the side length corresponding to the side of each radiation source connected with the polarized side is a parameter b, and the numerical range of the parameter b meets the following requirements: and b is more than or equal to 6 lambda/16 and more than or equal to 3 lambda/16, wherein lambda is the wavelength of the electromagnetic wave generated when the high-reliability transceiving and separating microwave Doppler detection antenna works, so that the size of the radiation source is reduced as much as possible under the condition that the high-reliability transceiving and separating microwave Doppler detection antenna can form the circular detection area, and the size of the high-reliability transceiving and separating microwave Doppler detection antenna is reduced.

Another object of the utility model is to provide a microwave doppler survey antenna of high reliability receiving and dispatching separation, wherein is reducing in the quantity of the radiation source of the microwave doppler survey antenna of high reliability receiving and dispatching separation, through with two structure and mode that the radiation source quadrature was arranged can enough ensure the microwave doppler survey antenna of high reliability receiving and dispatching separation forms and can also reduce two when being the circular shape detection area required space is arranged to the radiation source, and the correspondence is favorable to dwindling the volume of the microwave doppler survey antenna of high reliability receiving and dispatching separation.

Another object of the utility model is to provide a microwave doppler survey antenna of high reliability receiving and dispatching separation, wherein be with two on the radiation source is the structure basis that the quadrature was arranged, through adjusting two the limit of radiation source in its non-polarization direction arrives the mode of the distance at reference ground edge matches the radiation source is corresponding polarization direction's radiation can make the microwave doppler survey antenna of high reliability receiving and dispatching separation forms and is the circular shape detection area territory, so in order to be favorable to ensureing the reliability and the accuracy of surveying result.

Another object of the utility model is to provide a high reliability receiving and dispatching microwave doppler survey antenna of separation, wherein is reducing in the quantity of the radiation source of high reliability receiving and dispatching microwave doppler survey antenna of separation, high reliability receiving and dispatching microwave doppler survey antenna of separation can also form and be circular shape survey area is favorable to maintaining survey area has great detection range in order to ensure the reliability and the accuracy of probing result.

Another object of the utility model is to provide a high reliability receiving and dispatching microwave doppler survey antenna of separation, wherein is reducing in the quantity of the radiation source of the microwave doppler survey antenna of high reliability receiving and dispatching separation, can also improve the high gain of the microwave doppler survey antenna of high reliability receiving and dispatching separation is favorable to maintaining the operational reliability and the accuracy of the microwave doppler survey antenna of high reliability receiving and dispatching separation.

Another object of the utility model is to provide a high reliability receiving and dispatching microwave doppler survey antenna of separation, wherein is reducing in the quantity of the radiation source of the microwave doppler survey antenna of high reliability receiving and dispatching separation, can also maintain the great beam angle of the microwave doppler survey antenna of high reliability receiving and dispatching separation to be favorable to maintaining detection area covers great detection range in order to ensure the reliability and the accuracy of the microwave doppler survey antenna probing result of high reliability receiving and dispatching separation.

Another object of the utility model is to provide a high reliability receiving and dispatching microwave doppler survey antenna who separates, wherein through two structure and mode that the radiation source quadrature was arranged can ensure receiving antenna with receiving and dispatching isolation between the transmitting antenna so in order to be favorable to reducing receiving antenna with the self-excited interference that mutual reflection caused between the transmitting antenna, thereby be favorable to improving the interference killing feature of high reliability receiving and dispatching microwave doppler survey antenna's that separates corresponds and is favorable to improving reliability and accuracy that high reliability receiving and dispatching microwave doppler survey antenna surveyed.

Another object of the utility model is to provide a high reliability receiving and dispatching microwave doppler survey antenna of separation, wherein is reducing in the quantity of the radiation source of the microwave doppler survey antenna of high reliability receiving and dispatching separation, reduced the microwave doppler survey antenna of high reliability receiving and dispatching separation the degree of difficulty of arranging of radiation source.

Another object of the utility model is to provide a microwave doppler survey antenna of high reliability receiving and dispatching separation, wherein what the microwave doppler survey antenna of high reliability receiving and dispatching separation formed is circular shape the detection area has high homogeneity, promptly the sensing distance of the microwave doppler survey antenna of high reliability receiving and dispatching separation can be kept unanimous to can satisfy the installation requirement of high installation, the higher application scene of required precision to detection distance.

For at least an purpose above realizing, the utility model provides a microwave doppler survey antenna of high reliability receiving and dispatching separation, include:

a reference ground substrate, wherein the reference ground substrate carries a reference ground; and

at least two radiation sources, wherein the two radiation sources are arranged at the reference ground at intervals in an orthogonal state, wherein each radiation source is provided with a feeding point, when the two radiation sources are respectively fed at the feeding points, a receiving antenna is formed on one radiation source, and a transmitting antenna is formed on the other radiation source.

In an embodiment of the present invention, wherein the reference ground has two long sides and two broad sides connecting the two long sides, wherein the direction of the feeding point of each of the radiation sources to its physical center point is a polarization direction, and the side of each of the radiation sources passing through the polarization direction is a polarization side, wherein in the polarization direction of the radiation source corresponding to the polarization side parallel to the broad side of the reference ground, the distance between the radiation source corresponding to the polarization side parallel to the broad side of the reference ground and the radiation source corresponding to the polarization side parallel to the long side of the reference ground is set as a parameter d1, wherein the numerical range of the parameter d1 is set to satisfy: d1 is more than or equal to lambda/64, wherein lambda is the wavelength of the electromagnetic wave generated when the high-reliability transceiving and separating microwave Doppler detection antenna works.

In an embodiment of the present invention, the high-reliability microwave doppler detection antenna for transceiving and separation includes three radiation sources, two of which are parallel to each other and orthogonal to each other.

In an embodiment of the invention, wherein the further said radiation source is arranged between the two said radiation sources.

In an embodiment of the present invention, wherein the reference ground has two long sides and two broad sides connecting the two long sides, wherein the direction of the feeding point of each of the radiation sources to its physical center point is a polarization direction, and the side of each of the radiation sources passing through the polarization direction is a polarization side, wherein in the polarization direction of the radiation source corresponding to the polarization side parallel to the broad side of the reference ground, the distance between the radiation source corresponding to the polarization side parallel to the broad side of the reference ground and the radiation source corresponding to the polarization side parallel to the long side of the reference ground is set as a parameter d1, wherein the numerical range of the parameter d1 is set to satisfy: d1 is more than or equal to 3 lambda/16, wherein lambda is the wavelength of the electromagnetic wave generated when the high-reliability transceiving and separating microwave Doppler detection antenna works.

In an embodiment of the present invention, in a polarization direction of the radiation source corresponding to the long side of the polarizing side parallel to the reference ground, a distance between the radiation source corresponding to the long side of the polarizing side parallel to the reference ground and the radiation source corresponding to the wide side of the polarizing side parallel to the reference ground is set as a parameter d2, wherein a numerical range of the parameter d2 is set to satisfy: d2 is more than or equal to lambda/8, wherein lambda is the wavelength of the electromagnetic wave generated when the high-reliability transceiving and separating microwave Doppler detection antenna works.

In an embodiment of the present invention, the side length of the polarizing edge of each of the radiation sources is a parameter a, wherein the numerical range of the parameter a is set to satisfy: lambda/2 is more than or equal to a and more than or equal to lambda/4, wherein the side length corresponding to the side of each radiation source connected with the polarized side is a parameter b, and the numerical range of the parameter b meets the following requirements: b is more than or equal to 6 lambda/16 and more than or equal to 3 lambda/16, wherein lambda is the wavelength of the electromagnetic wave generated when the high-reliability transceiving and separating microwave Doppler detection antenna works.

In an embodiment of the invention, the feed point is arranged in the radiation source offset from a physical center point of the radiation source.

In an embodiment of the present invention, the feeding point is disposed on the reference ground in a microstrip line structure and is conductively connected to the radiation source through the microstrip line.

Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.

Drawings

Fig. 1A is a perspective view of a conventional doppler microwave radar with a good coverage symmetry.

Fig. 1B is a simulation effect diagram of the conventional doppler microwave radar with a good coverage symmetry.

Fig. 1C is a schematic diagram of a beam angle of the conventional doppler microwave radar with a good coverage symmetry.

Fig. 2 is a perspective view of the high-reliability transmit-receive separated microwave doppler probe antenna according to the first preferred embodiment of the present invention.

Fig. 3 is a simulation effect diagram of the high-reliability transceiving microwave doppler detection antenna according to the above preferred embodiment of the present invention.

Fig. 4 is a schematic beam angle diagram of the high-reliability transmit-receive separated microwave doppler detection antenna according to the preferred embodiment of the present invention.

Fig. 5 is a perspective view of the high-reliability transmit-receive separated microwave doppler probe antenna according to the second preferred embodiment of the present invention.

Fig. 6 is a simulation effect diagram of the high-reliability transceiving microwave doppler probe antenna according to the second preferred embodiment of the present invention.

Fig. 7 is a perspective view of the high-reliability transmit-receive separated microwave doppler probe antenna according to the third preferred embodiment of the present invention.

Fig. 8 is a simulation effect diagram of the high-reliability transceiving microwave doppler probe antenna according to the third preferred embodiment of the present invention.

Fig. 9 is a schematic beam angle diagram of the high-reliability transmit-receive separation microwave doppler detection antenna according to the third preferred embodiment of the present invention.

Fig. 10 is a perspective view of the high-reliability transmit-receive separated microwave doppler probe antenna according to the fourth preferred embodiment of the present invention.

Fig. 11 is a simulation effect diagram of the high-reliability transceiving microwave doppler probe antenna according to the fourth preferred embodiment of the present invention.

Fig. 12 is a perspective view of the high-reliability transmit-receive separated microwave doppler probe antenna according to the fifth preferred embodiment of the present invention.

Fig. 13 is a simulation effect diagram of the high-reliability transmit-receive separated microwave doppler probe antenna according to the fifth preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "vertical," "horizontal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the specification and are not intended to indicate or imply that the referenced device or element must have the specified orientation, configuration, or operation in the specified orientation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 2 to 4 of the drawings, a highly reliable transmit-receive separated microwave doppler probe antenna 30 according to a first preferred embodiment of the present invention is illustrated, specifically, wherein the highly reliable transmit-receive separated microwave doppler probe antenna 30 includes a reference ground substrate 31, a reference ground 311 carried on the reference ground substrate 31, and at least two radiation sources 32, wherein the two radiation sources 32 are orthogonally disposed on the reference ground 311 at intervals, wherein each of the radiation sources 32 is provided with a feeding point 321, wherein when the two radiation sources 32 are respectively fed at the feeding point 321, a receiving antenna 33 is formed on one of the radiation sources 32, and a transmitting antenna 34 is formed on the other radiation source 32.

It can be understood that, as shown in fig. 3, the shape of the detection beam correspondingly formed and the shape of the detection region 301 correspondingly formed by the high-reliability transceiving microwave doppler detection antenna 30 according to the present invention are illustrated, wherein both of said radiation sources 32 of said highly reliable transmit-receive separated microwave doppler probe antenna 30 are fed, the radiation source 32 radiates electromagnetic waves outwards at the feeding point 321, thereby forming the detection region 301, wherein the detection region 301 is in a circular shape, and has better uniformity corresponding to the detection region 301, that is, when the highly reliable transceiving separation is applied to human body activity detection, since the detection distance of the detection region 301 is kept consistent and the detection region 301 can cover a larger detection range, the result of the high-reliability transceiving and separating microwave Doppler detection antenna 30 for detecting the human body activity has high reliability and accuracy.

Specifically, in the preferred embodiment of the present invention, the radiation of the two radiation sources 32 in the corresponding polarization directions is matched by adjusting the distance from the side of the two radiation sources 32 in the non-polarization direction to the edge of the reference ground 311, so that on the basis of the structure that the two radiation sources 32 are orthogonally arranged, the highly reliable transceiving microwave doppler detection antenna 30 can form the circular detection region 301 by adjusting the distance from the side of the two radiation sources 32 in the non-polarization direction to the edge of the reference ground 311, thereby facilitating the reliability and accuracy of the result of the detection of the human body movement by the highly reliable transceiving microwave doppler detection antenna 30.

Illustratively, the high-reliability transceiving microwave doppler antenna 30 of the present invention operates in a frequency band of 10.525GHz, wherein the axes of the high-reliability transceiving microwave doppler antenna 30 in three directions are defined as X-axis, Y-axis and Z-axis, respectively, wherein the Z-axis is perpendicular to the X-axis and the Y-axis and corresponds to a target detection direction of the high-reliability transceiving microwave doppler antenna, wherein the gain of the high-reliability transceiving microwave doppler antenna 30 and the shape of the detection region 301 formed are shown in fig. 3, and it can be seen that the gain of the high-reliability transceiving microwave doppler antenna 30 is about 7dB and corresponds to the detection region 301 formed in a circular shape.

It can be understood that, for the conventional doppler microwave radar with good coverage symmetry as shown in fig. 1A to fig. 1C, in this preferred embodiment, as can be seen from a comparison between fig. 1B and fig. 3, the detection area 301 formed by the high-reliability transceiving-separated microwave doppler detection antenna 30 is more circular than the detection area 301P formed by the conventional doppler microwave radar with good coverage symmetry, that is, the detection area 301 formed by the high-reliability transceiving-separated microwave doppler detection antenna 30 has higher uniformity and larger coverage of a high-density area than the detection area 301P formed by the conventional doppler microwave radar with good coverage symmetry, so that the reliability of the high-reliability transceiving-separated microwave doppler detection antenna 30 is higher, and compared with the conventional doppler microwave radar 30P with good coverage symmetry, the high-reliability transceiving microwave doppler detection antenna 30 has a small number of the radiation sources 32, so as to reduce the volume of the high-reliability transceiving microwave doppler detection antenna 30 and reduce the difficulty in arranging the radiation sources 32. In addition, as can be seen by continuing to compare fig. 1B and fig. 3, the gain of the conventional doppler microwave radar 30P with good coverage symmetry is about 6dB, and the high-reliability transceiving-separated microwave doppler detection antenna 30 can increase the gain to about 7dB, so that it can be understood that the high-reliability transceiving-separated microwave doppler detection antenna 30 can increase the gain while reducing the number of the radiation sources 32, so that when the high-reliability transceiving-separated microwave doppler detection antenna 30 is used for detecting the human body activity in the detection area 301, a reliable and accurate detection effect can be obtained.

It can also be understood that, because the microwave doppler survey antenna 30 of high reliability receiving and dispatching separation reduces the quantity of radiation source 32, can form the homogeneity higher survey area 301 and can improve the gain, with this the utility model provides a volume is littleer, detection effect reliability and accuracy are higher the microwave doppler survey antenna 30 of high reliability receiving and dispatching separation, and because the microwave doppler survey antenna 30 of high reliability receiving and dispatching separation has aforementioned advantage, the microwave doppler survey antenna 30 of high reliability receiving and dispatching separation can satisfy the installation requirement of high installation and application scene such as mill, warehouse, street lamp that requires high to survey area 301 homogeneity.

Further, as can be seen from a comparison between fig. 1C and fig. 4, when the Z axis is 360deg and the X axis is 0deg and 90deg, respectively, the beam angle of the high-reliability transceiving-separated microwave doppler detection antenna 30 is indicated, and it can be seen that, while the number of the radiation sources 32 is reduced by the high-reliability transceiving-separated microwave doppler detection antenna 30, the high-reliability transceiving-separated microwave doppler detection antenna 30 can also maintain a larger beam angle, and a larger detection range can be covered by the corresponding detection region 301, so as to improve the reliability of the high-reliability transceiving-separated detection.

Further, as shown in fig. 2, wherein the reference ground 311 has two long sides 3111 and two broad sides 3112 connecting the two long sides 3111, wherein the direction of the feeding point 321 of each of the radiation sources 32 to the physical center point thereof is set as a polarization direction, and the side of each of the radiation sources 32 passing through the polarization direction is set as a polarization side 322, wherein in the polarization direction of the radiation source 32 corresponding to the polarization side parallel to the broad side 3112 of the reference ground 311, the distance between the radiation source 32 corresponding to the polarization side 322 parallel to the broad side 3112 of the reference ground 311 and the radiation source 32 corresponding to the long side 3111 of the polarization side 322 parallel to the reference ground 311 is set as a parameter d1, wherein the value range of the parameter d1 is set to satisfy: d1 is greater than or equal to λ/64, where λ is the wavelength of the electromagnetic wave generated by the high-reliability transceiving microwave doppler detection antenna 30 during operation, so as to ensure the transceiving isolation between the receiving antenna 33 and the transmitting antenna 34 of the high-reliability transceiving microwave doppler detection antenna 30, and at the same time, enable the arrangement between the two radiation sources 32 to occupy only a small area, and the high-reliability transceiving microwave doppler detection antenna 30 has a small volume, thereby facilitating the installation and application of the high-reliability transceiving microwave doppler detection antenna 30.

Further, let a side length of the polarizing side 322 of each radiation source 32 be a parameter a, wherein a value range of the parameter a is set to satisfy: λ/2 is more than or equal to a and more than or equal to λ/4, wherein the side length corresponding to the side of each radiation source 32 connected with the polarizing side 322 is set as a parameter b, and the numerical range of the parameter b satisfies: and b is more than or equal to 6 lambda/16 and more than or equal to 3 lambda/16, wherein lambda is the wavelength of the electromagnetic wave generated by the high-reliability transceiving microwave Doppler detection antenna 30 during operation, so that the size of the radiation source 32 is reduced as much as possible under the condition that the high-reliability transceiving microwave Doppler detection antenna 30 can form the circular detection area 301, and the size of the high-reliability transceiving microwave Doppler detection antenna 30 is reduced.

It should be noted that, in the preferred embodiment of the present invention, the feeding point 321 is disposed on the reference ground 311 in a microstrip line structure and is electrically connected to the radiation source 32 via the microstrip line, so as to further ensure the transceiving isolation between the receiving antenna 33 and the transmitting antenna 34. In some embodiments of the present invention, the feeding point 321 may be disposed on the radiation source 32 deviating from the physical center point of the radiation source 32, which is not limited by the present invention.

It is understood that, a surface of the reference ground substrate 31 opposite to the surface carrying the reference ground 311 is provided with a driving circuit unit or is provided with a circuit integrated chip for controlling the operation of the high-reliability transceiving-separated microwave doppler probe antenna 30, which is not limited by the present invention.

It should be understood that the operating frequency bands of the highly reliable transceiving split microwave doppler probe antenna 30 can be, but are not limited to, 10.33GHz, 10.525GHz, 10.687GHz, and 24.125GHz, which the present invention is not limited to.

As shown in fig. 5 and fig. 6, a structure of a highly reliable transmit-receive separated microwave doppler probe antenna 30A according to a second preferred embodiment of the present invention is illustrated, wherein the highly reliable transmit-receive separated microwave doppler probe antenna 30A includes a reference ground substrate 31A, a reference ground 311A carried on the reference ground substrate 31A, and at least two radiation sources 32A, wherein the two radiation sources 32A are disposed at the reference ground 311A in an orthogonal state, and each of the radiation sources 32A is disposed with a feeding point 321A, wherein when the two radiation sources 32A are respectively fed at the feeding point 321A, a receiving antenna 33A is formed at one of the radiation sources 32A, and a transmitting antenna 34A is formed at the other of the radiation sources 32A.

As shown in fig. 6, the shape of the detection beam formed correspondingly by the high-reliability transceiving microwave doppler detection antenna 30A and the shape of the detection region 301A formed correspondingly according to the present invention are illustrated, wherein both of said radiation sources 32A of said highly reliable transmit-receive separated microwave doppler probe antenna 30A are fed, the radiation source 32A radiates electromagnetic waves to the outside at the feeding point 321A, thereby forming the detection region 301A, wherein the detection region 301A is in a circular shape, and has better uniformity corresponding to the detection region 301A, when the highly reliable transceiving separation is applied to human activity detection, since the detection distance of the detection region 301A is kept uniform, the result of the high-reliability transceiving separated microwave Doppler detection antenna 30A for detecting the human body activity has high reliability and accuracy.

It is worth mentioning that, as can be seen from comparing fig. 1B and fig. 6, the gain of the high-reliability transceiving microwave doppler detection antenna 30A is also higher than that of the doppler microwave radar 30P with good coverage symmetry, and the high-reliability transceiving microwave doppler detection antenna 30A can have a higher gain and a better detection effect while keeping a small volume.

Further, wherein the reference ground 311A has two long sides 3111A and two broad sides 3112A connecting the two long sides 3111A, wherein the direction of the feeding point 321A of each of the radiation sources 32A toward its physical center point is set as a polarization direction, and the side of each of the radiation sources 32A passing through the polarization direction is set as a polarization side 322A, wherein in the polarization direction of the radiation source 32A corresponding to the polarization side parallel to the broad side 3112A of the reference ground 311A, the distance between the radiation source 32A corresponding to the polarization side 322A parallel to the broad side 3112A of the reference ground 311A and the radiation source 32A corresponding to the polarization side 3111A parallel to the long side 3111A of the reference ground 311A is set as a parameter d1, wherein the numerical range of the parameter d1 is set to satisfy: d1 is greater than or equal to λ/64, where λ is the wavelength of the electromagnetic wave generated by the high-reliability transceiving microwave doppler detection antenna 30A during operation, so as to ensure the transceiving isolation between the receiving antenna 33A and the transmitting antenna 34A of the high-reliability transceiving microwave doppler detection antenna 30A, and at the same time, enable the arrangement between the two radiation sources 32A to occupy only a small area, and the high-reliability transceiving microwave doppler detection antenna 30A has a small volume, thereby facilitating the installation and application of the high-reliability transceiving microwave doppler detection antenna 30A.

Further, let a side length of the polarizing side 322A of each radiation source 32A be a parameter a, wherein a value range of the parameter a is set to satisfy: λ/2 is greater than or equal to a and greater than or equal to λ/4, wherein the side length corresponding to the side of each radiation source 32A connected with the polarizing side 322A is set as a parameter b, and the numerical range of the parameter b satisfies: and b is more than or equal to 6 lambda/16 and more than or equal to 3 lambda/16, wherein lambda is the wavelength of the electromagnetic wave generated by the high-reliability transceiving microwave doppler detection antenna 30A during operation, so as to be beneficial to reducing the size of the radiation source 32A as much as possible under the condition of ensuring that the high-reliability transceiving microwave doppler detection antenna 30A can form the circular detection area 301A, thereby being beneficial to reducing the volume of the high-reliability transceiving microwave doppler detection antenna 30A.

It is worth mentioning that, the feeding point 321A of each radiation source 32A of the high-reliability transceiving microwave doppler probe antenna 30A is disposed at the radiation source 32A offset from the physical center point of the radiation source 32A.

It can be understood that the second preferred embodiment of the present invention is the high-reliability transceiving-separated microwave doppler detection antenna 30A, except for each of the radiation sources 32A, a modified implementation of the high-reliability transceiving-separated microwave doppler detection antenna 30 of the first preferred embodiment, wherein other structures of the high-reliability transceiving-separated microwave doppler detection antenna 30A are the same as the structure of the high-reliability transceiving-separated microwave doppler detection antenna 30 of the first preferred embodiment of the present invention except that the structure of the feeding point 321A is different.

As shown in fig. 7 to 9, a structure of a highly reliable transmit-receive separated microwave doppler probe antenna 30B according to a third preferred embodiment of the present invention is illustrated, wherein the highly reliable transmit-receive separated microwave doppler probe antenna 30B includes a reference ground substrate 31B, a reference ground 311B carried on the reference ground substrate 31B, and at least two radiation sources 32B, wherein the two radiation sources 32B are disposed at the reference ground 311B in an orthogonal state, and each radiation source 32B is disposed with a feeding point 321B, wherein when the two radiation sources 32B are respectively fed at the feeding point 321B, a receiving antenna 33B is formed on one of the radiation sources 32B, and a transmitting antenna 34B is formed on the other radiation source 32B.

As shown in fig. 8, the shape of the detection beam formed correspondingly to the high-reliability transceiving microwave doppler detection antenna 30B and the shape of the detection region 301B formed correspondingly thereto according to the present invention are illustrated, wherein both of said radiation sources 32B of said highly reliable transmit-receive separated microwave doppler probe antenna 30B are fed, the radiation source 32B radiates electromagnetic waves outward at the feeding point 321B, thereby forming the detection region 301B, wherein the detection region 301B is in a circular shape, and has better uniformity corresponding to the detection region 301B, when the highly reliable transceive-separated microwave doppler probe antenna 30B is applied to human body activity detection, since the detection distance of the detection area 301B is kept consistent, the result of the highly reliable transceiving microwave doppler detection antenna 30B detecting human body activity is highly reliable and accurate.

Further, as shown in fig. 7, wherein the reference ground 311B has two long sides 3111B and two broad sides 3112B connecting the two long sides 3111B, wherein the direction of the feeding point 321B of each of the radiation sources 32B to the physical center point thereof is set as a polarization direction, and the side of each of the radiation sources 32B passing through the polarization direction is set as a polarization side 322B, wherein in the polarization direction of the radiation source 32B corresponding to the wide side 3112B of the polarization side parallel to the reference ground 311B, the distance between the radiation source 32B corresponding to the wide side 3112B of the polarization side 322B parallel to the reference ground 311B and the radiation source 32B corresponding to the long side 3111B of the polarization side 322B parallel to the reference ground 311B is set as a parameter d1, wherein the numerical range of the parameter d1 is set to satisfy: d1 ≧ 3 λ/16, wherein in the polarization direction of the radiation source 32B corresponding to the long side 3111B of the polarizing side 322B parallel to the reference ground 311B, the spacing between the radiation source 32B corresponding to the long side 3111B of the polarizing side 322B parallel to the reference ground 311B and the radiation source 32B corresponding to the wide side 3112B of the polarizing side 322B parallel to the reference ground 311B is set as a parameter d2, wherein the numerical range of the parameter d2 is set so as to satisfy: d2 is more than or equal to lambda/8, wherein lambda is the wavelength of the electromagnetic wave generated by the high-reliability transceiving microwave Doppler detection antenna 30B when in operation, this ensures the isolation between the receiving antenna 33B and the transmitting antenna 34B, thereby avoiding the self-excited interference generated by the high-reliability transceiving microwave Doppler detection antenna 30B, being beneficial to improving the anti-interference capability of the high-reliability transceiving microwave Doppler detection antenna 30B, and through the orthogonal arrangement structure and mode of the two radiation sources 32B, the receiving and transmitting isolation between the receiving antenna 33B and the transmitting antenna 34B can be ensured, and simultaneously the space occupied by the arrangement of the two radiation sources 32B can be reduced, thereby facilitating a reduction in the volume of the highly reliable transmit-receive split microwave doppler probe antenna 30B.

Furthermore, the feeding point 321B is disposed on the reference ground 311B in a microstrip line structure and is conductively connected to the radiation source 32B via the microstrip line, so as to ensure the transceiving isolation between the receiving antenna 33B and the transmitting antenna 34B.

In particular, as can be seen from comparing fig. 1C and fig. 9, in this embodiment, the beam angle of the high-reliability transceiving-separated microwave doppler detecting antenna 30B is illustrated when the Z-axis is 360deg and the X-axis is 0deg and 90deg, respectively, and it can be seen that, while the number of the radiation sources 32B is reduced by the high-reliability transceiving-separated microwave doppler detecting antenna 30B, the beam angle of the probe beam of the high-reliability transceiving-separated microwave doppler detecting antenna 30B is larger than that of the probe beam of the coverage-symmetric doppler microwave radar 30P, and thus the coverage area covered by the detection region 301B of the high-reliability transceiving-separated microwave doppler detecting antenna 30B can be enlarged while the volume of the high-reliability transceiving-separated microwave doppler detecting antenna 30B is reduced, the reliability of the high-reliability transceiving separation detection is improved.

It can be understood that the microwave doppler detection antenna 30B with high reliability transceiving separation of this preferred embodiment of the present invention is another variant of the first preferred embodiment, except that two different spacing sizes between the radiation sources 32B, wherein the other structures of the microwave doppler detection antenna 30B with high reliability transceiving separation are the same as the structure of the microwave doppler detection antenna 30 with high reliability transceiving separation of the first preferred embodiment of the present invention.

As shown in fig. 10 and fig. 11, a structure of a highly reliable transmit-receive separated microwave doppler probe antenna 30C according to a fourth preferred embodiment of the present invention is illustrated, wherein the highly reliable transmit-receive separated microwave doppler probe antenna 30C includes a reference ground substrate 31C, a reference ground 311C carried on the reference ground substrate 31C, and at least two radiation sources 32C, wherein the two radiation sources 32C are disposed at the reference ground 311C in an orthogonal state, and each radiation source 32C is disposed with a feeding point 321C, wherein when the two radiation sources 32C are respectively fed at the feeding point 321C, a receiving antenna 33C is formed at one of the radiation sources 32C, and a transmitting antenna 34C is formed at the other radiation source 32C.

As shown in fig. 11, the shape of the detection beam formed correspondingly to the high-reliability transceiving microwave doppler detection antenna 30C and the shape of the detection region 301C formed correspondingly thereto according to the present invention are illustrated, wherein both of said radiation sources 32C of said highly reliable transmit-receive separated microwave doppler probe antenna 30C are fed, the radiation source 32C radiates electromagnetic waves outward at the feeding point 321C, thereby forming the detection region 301C, wherein the detection region 301C is in a circular shape, and has better uniformity corresponding to the detection region 301C, when the highly reliable transceiving separation is applied to human activity detection, since the detection distance of the detection region 301C is kept uniform, the result of the high-reliability transceiving separated microwave Doppler detection antenna 30C for detecting the human body activity has high reliability and accuracy.

Further, as shown in fig. 10, wherein the reference ground 311C has two long sides 3111C and two broad sides 3112C connecting the two long sides 3111C, wherein the direction of the feeding point 321C of each of the radiation sources 32C to the physical center point thereof is set as a polarization direction, and the side of each of the radiation sources 32C passing through the polarization direction is set as a polarization side 322C, wherein in the polarization direction of the radiation source 32C corresponding to the broad side 3112C of the reference ground 311C parallel to the polarization side, the distance between the radiation source 32C corresponding to the broad side 3112C of the polarization side 322C parallel to the reference ground 311C and the radiation source 32C corresponding to the long side 3111C of the polarization side 322C parallel to the reference ground 311C is set as a parameter d1, wherein the numerical range of the parameter d1 is set to satisfy: d1 ≧ 3 λ/16, wherein in the polarization direction of the radiation source 32C corresponding to the long side 3111C of the polarizing side 322C parallel to the reference ground 311C, the spacing between the radiation source 32C corresponding to the long side 3111C of the polarizing side 322C parallel to the reference ground 311C and the radiation source 32C corresponding to the wide side 3112C of the polarizing side 322C parallel to the reference ground 311C is set as a parameter d2, wherein the numerical range of the parameter d2 is set so as to satisfy: d2 is more than or equal to lambda/8, wherein lambda is the wavelength of the electromagnetic wave generated by the high-reliability transceiving microwave Doppler detection antenna 30C when in operation, this ensures the transmission/reception isolation between the receiving antenna 33C and the transmitting antenna 34C, thereby avoiding the self-excited interference generated by the high-reliability transceiving microwave Doppler detection antenna 30C, being beneficial to improving the anti-interference capability of the high-reliability transceiving microwave Doppler detection antenna 30C, and through the orthogonal arrangement structure and mode of the two radiation sources 32C, the receiving and transmitting isolation between the receiving antenna 33C and the transmitting antenna 34C can be ensured, and simultaneously the space occupied by the arrangement of the two radiation sources 32C can be reduced, thereby facilitating a reduction in the volume of the highly reliable transmit-receive split microwave doppler probe antenna 30C.

It is worth mentioning that, in this embodiment, the feeding point 321C of each radiation source 32C of the high-reliability transceiving microwave doppler probe antenna 30C is disposed at the radiation source 32C offset from the physical center point of the radiation source 32C.

It can be understood that the fourth preferred embodiment of the present invention is the transmitting/receiving separating antenna according to the third preferred embodiment of the present invention, except for each of the radiation sources 32C, the structure of the feeding point 321C is different, wherein the other structures of the high-reliability transmitting/receiving separating microwave doppler detecting antenna 30C are the same as the structure of the high-reliability transmitting/receiving separating microwave doppler detecting antenna 30B according to the third preferred embodiment of the present invention.

As shown in fig. 12 and 13, a structure of a highly reliable transmitting/receiving separated microwave doppler probe antenna 30D according to a fifth preferred embodiment of the present invention is illustrated, wherein the high-reliability transceiving microwave doppler probe antenna 30D comprises a reference ground substrate 31D, a reference ground 311D carried on the reference ground substrate 31D, and three radiation sources 32D, two of the radiation sources 32D are disposed in parallel and orthogonal to the other radiation source 32D at the reference ground 311D, wherein each of the radiation sources 32D is provided with a feeding point 321D, wherein when the radiation sources 32D in two parallel states are respectively fed at the feeding points 321D, a receiving antenna 33D is formed at the two radiation sources 32D in parallel, and a transmitting antenna 34D is formed at the other radiation source 32D.

It should be understood that, based on the reciprocity theorem of the antenna, in some embodiments of the present invention, when the radiation sources 32D in two parallel states are respectively fed at the feeding points 321D, a transmitting antenna 34D may also be formed at the radiation source 32D in another parallel state, and a receiving antenna 33D is formed at the radiation source 32D in another parallel state, which is not limited by the present invention.

In other words, in the preferred embodiment of the present invention, the high-reliability transmitting-receiving-separated microwave doppler detection antenna 30D includes three radiation sources 32D, two of the radiation sources 32D are parallel to each other and are orthogonal to the other radiation source 32D, and the other radiation source 32D is disposed between the two radiation sources 32D.

As shown in fig. 13, the shape of the detection beam formed correspondingly to the high-reliability transceiving microwave doppler detection antenna 30D and the shape of the detection region 301D formed correspondingly to the high-reliability transceiving microwave doppler detection antenna according to the present invention are illustrated, wherein both of said radiation sources 32D of said highly reliable transmit-receive separated microwave doppler probe antenna 30D are fed, the radiation source 32D radiates electromagnetic waves outward at the feeding point 321D, thereby forming the detection region 301D, wherein the detection region 301D is in a circular shape, and has better uniformity corresponding to the detection region 301D, when the highly reliable transceiving separation is applied to human activity detection, since the detection distance of the detection region 301D is kept uniform, the result of the high-reliability transceiving separated microwave Doppler detection antenna 30D for detecting the human body activity has high reliability and accuracy.

It should be noted that, in this embodiment of the present invention, the feeding point 321D of each radiation source 32D may be set in the radiation source 32D by deviating from the physical center point of the radiation source 32D, and may also be set in the reference ground 311D by the structure of the microstrip line and conductively connected to the radiation source 32D through the microstrip line, which is not limited by the present invention. Preferably, in this preferred embodiment of the present invention, the feeding point 321D of each radiation source 32D is disposed on the reference ground 311D in a microstrip line structure and is conductively connected to the corresponding radiation source 32D through the microstrip line, so as to ensure the transceiving isolation between the receiving antenna 33D and the transmitting antenna 34D.

Further, it is worth mentioning that, where the reference ground 311D has two long sides 3111D and two broad sides 3112D connecting the two long sides 3111D, where the direction of the feeding point 321D of each of the radiation sources 32D to its physical center point is assumed to be a polarization direction, and the side of each of the radiation sources 32D passing through the polarization direction is assumed to be a polarization side 322D, where in the polarization direction of the radiation source 32D corresponding to the polarization side parallel to the broad side 3112D of the reference ground 311D, a distance between the radiation source 3113113112D corresponding to the polarization side 322D parallel to the broad side 3112D of the reference ground 311D and the radiation source 32D corresponding to the long side 3112D of the polarization side 322D parallel to the long side 1D of the reference ground 311D is assumed to be a parameter D1, where the numerical range of the parameter D1 is set to satisfy: d1 is ≧ λ/64, where λ is the wavelength of the electromagnetic wave generated by the operation of the highly reliable transceiving microwave doppler probe antenna so as to ensure the transceiving isolation between the receiving antenna 33D and the transmitting antenna 34D.

In other words, wherein in the polarization directions of two of the radiation sources 32D in a parallel state, the spacing between the two of the radiation sources 32D and the other of the radiation sources 32D is the parameter D1, wherein the numerical range of the parameter D1 is set to satisfy: d1 is greater than or equal to lambda/64, so that the structure and mode of orthogonally arranging the two radiation sources 32D ensure the transmitting-receiving isolation between the transmitting antenna 34D and the receiving antenna 33D, and the arrangement between the two radiation sources 32D only occupies a smaller area, so that the high-reliability transmitting-receiving separated microwave Doppler detection antenna 30D has a smaller volume.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims (9)

1. A high-reliability transmitting-receiving separated microwave Doppler detection antenna is characterized by comprising:

a reference ground substrate, wherein the reference ground substrate carries a reference ground; and

at least two radiation sources, wherein the two radiation sources are arranged at the reference ground at intervals in an orthogonal state, wherein each radiation source is provided with a feeding point, when the two radiation sources are respectively fed at the feeding points, a receiving antenna is formed on one radiation source, and a transmitting antenna is formed on the other radiation source.

2. The highly reliable transmit-receive separated microwave doppler probe antenna according to claim 1, wherein the reference ground has two long sides and two broad sides connecting the two long sides, wherein the direction of the feeding point of each of the radiation sources toward the physical center point thereof is set to a polarization direction, and the side of each of the radiation sources passing through the polarization direction is set to a polarization side, wherein in the polarization direction of the radiation source corresponding to the broad side of the polarization side parallel to the reference ground, a distance between the radiation source corresponding to the broad side of the polarization side parallel to the reference ground and the radiation source corresponding to the long side of the polarization side parallel to the reference ground is set to a parameter d1, wherein a numerical range of the parameter d1 is set to satisfy: d1 is more than or equal to lambda/64, wherein lambda is the wavelength of the electromagnetic wave generated when the high-reliability transceiving and separating microwave Doppler detection antenna works.

3. The high reliability transmit-receive separated microwave doppler sounding antenna according to claim 2, wherein the high reliability transmit-receive separated microwave doppler sounding antenna comprises three radiation sources, two of which are parallel to each other and orthogonal to each other.

4. The high reliability transmit-receive separated microwave doppler probe antenna according to claim 3, wherein the another one of said radiation sources is disposed between the two of said radiation sources.

5. The highly reliable transmit-receive separated microwave doppler probe antenna according to claim 1, wherein the reference ground has two long sides and two broad sides connecting the two long sides, wherein the direction of the feeding point of each of the radiation sources toward the physical center point thereof is set to a polarization direction, and the side of each of the radiation sources passing through the polarization direction is set to a polarization side, wherein in the polarization direction of the radiation source corresponding to the broad side of the polarization side parallel to the reference ground, a distance between the radiation source corresponding to the broad side of the polarization side parallel to the reference ground and the radiation source corresponding to the long side of the polarization side parallel to the reference ground is set to a parameter d1, wherein a numerical range of the parameter d1 is set to satisfy: d1 is more than or equal to 3 lambda/16, wherein lambda is the wavelength of the electromagnetic wave generated when the high-reliability transceiving and separating microwave Doppler detection antenna works.

6. The high-reliability transmit-receive separated microwave doppler detection antenna according to claim 5, wherein in a polarization direction of the radiation source corresponding to the long side of the polarization side parallel to the reference ground, a distance between the radiation source corresponding to the long side of the polarization side parallel to the reference ground and the radiation source corresponding to the wide side of the polarization side parallel to the reference ground is set as a parameter d2, wherein a numerical range of the parameter d2 is set to satisfy: d2 is more than or equal to lambda/8, wherein lambda is the wavelength of the electromagnetic wave generated when the high-reliability transceiving and separating microwave Doppler detection antenna works.

7. The high-reliability transmit-receive separation microwave doppler detection antenna according to any one of claims 2 to 6, wherein a side length of the polarized side of each radiation source is a parameter a, wherein a value range of the parameter a is set to satisfy: lambda/2 is more than or equal to a and more than or equal to lambda/4, wherein the side length corresponding to the side of each radiation source connected with the polarized side is a parameter b, and the numerical range of the parameter b meets the following requirements: b is more than or equal to 6 lambda/16 and more than or equal to 3 lambda/16, wherein lambda is the wavelength of the electromagnetic wave generated when the high-reliability transceiving and separating microwave Doppler detection antenna works.

8. The high reliability transmit-receive separated microwave doppler probe antenna according to any one of claims 1 to 6, wherein the feeding point is disposed at the radiation source offset from a physical center point of the radiation source.

9. The high-reliability transmit-receive-split microwave doppler probe antenna according to any one of claims 1 to 6, wherein the feeding point is disposed on the reference ground in a microstrip line structure and conductively connected to the radiation source via the microstrip line.

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