CN113945986A

CN113945986A - Doppler microwave detection device and gain increasing method thereof

Info

Publication number: CN113945986A
Application number: CN202110920521.9A
Authority: CN
Inventors: 邹高迪; 邹新
Original assignee: Shenzhen Merrytek Technology Co Ltd
Current assignee: Shenzhen Merrytek Technology Co Ltd
Priority date: 2021-03-16
Filing date: 2021-08-11
Publication date: 2022-01-18
Anticipated expiration: 2041-08-11
Also published as: CN113945986B

Abstract

The invention discloses a Doppler microwave detection device and a gain improving method thereof, wherein the state of a medium in a near-field medium space is changed in a mode of arranging at least one auxiliary oscillator around the directional radiation direction of the Doppler microwave detection device, so that the energy density of a corresponding microwave beam is formed, the radiation distance in the directional radiation direction is increased simultaneously, the Doppler microwave detection device comprises a plane reference ground and a radiation source, and the Doppler microwave detection device is provided with an origin, wherein the near-field medium space is a space which is defined by taking the origin as a sphere center, taking lambda/2 as an inner radius and 3 lambda/2 as an outer radius within an error range of +/-lambda/4, and lambda is a wavelength parameter corresponding to the frequency parameter of the Doppler microwave detection device.

Description

Doppler microwave detection device and gain increasing method thereof

Technical Field

The invention relates to the field of microwave detection, in particular to a Doppler microwave detection device and a method for improving gain thereof.

Background

The microwave detection technology is used as a person and an object, an important pivot connected between the object and the object has unique advantages in behavior detection and existence detection technology, and the microwave detection technology can generate a Doppler intermediate frequency signal corresponding to the frequency difference between a microwave beam and a reflected echo by the corresponding object by transmitting the microwave beam and receiving the reflected echo under the condition of not invading the privacy of the person and by a frequency mixing detection mode based on the Doppler effect principle in the follow-up process, so that the movement of the corresponding object is fed back by the Doppler intermediate frequency signal, and when the microwave detection technology is applied to the detection of the movement of the person, the detection of the breathing and the heartbeat movement of the person is included, the intelligent interconnection between the person and the object can be realized, and the application prospect is wide. However, due to the lack of effective constraint and control means for electromagnetic radiation, i.e. means for adjusting the shape of the coverage area of electromagnetic radiation, the actual detection space of the existing microwave detection module is difficult to control, and correspondingly, the actual detection space of the existing microwave detection module is not matched with the corresponding target detection space, for example, the actual detection space is partially overlapped with the corresponding target space in a cross manner, so that the target detection space outside the actual detection space cannot be effectively detected, and/or the actual detection space outside the target detection space has environmental interference, including motion interference, electromagnetic interference and self-excited interference caused by electromagnetic shielding environment, which causes the problem of poor detection accuracy and/or poor anti-interference performance of the existing microwave detection module, i.e. the existing microwave detection module has poor detection stability in practical application and has limited adaptability to different application scenarios in practical application.

Specifically, taking a conventional microwave detection module adopting a planar radiation source structure as an example, referring to fig. 1A to 1C, a structure of the microwave detection module and a radiation pattern corresponding to the structure are respectively illustrated, wherein the microwave detection module comprises a reference ground 10P and a planar radiation source 20P, wherein the planar radiation source 20P and the reference ground 10P are arranged at an interval in a state of being approximately parallel to each other, wherein the radiation source 20P is provided with only one feeding point 21P, wherein in a state that the radiation source 20P is fed at the feeding point 21P, the radiation source 20P generates polarization with a direction from the feeding point 21P to a physical center point of the radiation source 20P as a polarization direction, and an initial electric field is established between the radiation source 20P and the reference ground 10P corresponding to the coupling of the radiation source 20P and the reference ground 10P, specifically, the initial electric field is defined by an inner electric field and an outer electric field on the boundary of the radiation source 20P, wherein the inner electric field is an electric field established between the radiation source 20P and the reference ground 10P in a direction perpendicular to the radiation source 20P and the reference ground 10P at the same time, and the outer electric field is an electric field established between the radiation source 20P and the reference ground 10P in a direction not perpendicular to the radiation source 20P and the reference ground 10P at the same time, wherein the outer electric field is capable of forming a radiation near field and further forming a radiation far field to form the emission of a microwave beam based on the alternating propagation of the electric field and the magnetic field. That is, the energy of the external electric field is directly related to the radiation gain of the microwave beam, corresponding to the Z-axis direction of the three-dimensional radiation pattern illustrated in fig. 1B, the gain of the microwave detection module in the maximum radiation direction is 7.2dB, the radiation energy of the microwave beam is attenuated to a certain extent, corresponding to the boundary of the three-dimensional radiation pattern illustrated in fig. 1B, and is mainly characterized by the beam angle of the microwave beam, i.e. the included angle at which the energy of the gradient boundary is reduced by half (-3dB) with the physical center point of the radiation source 20P as the origin in the two-dimensional radiation pattern of the microwave detection module illustrated in fig. 1C in the directional radiation direction (corresponding to the Z-axis direction in fig. 1B), wherein the beam angle of the corresponding microwave beam is limited to 70-80 degrees based on the above structural configuration of the microwave detection module, the radiation gain of the microwave beam is related to the detection sensitivity and the detection distance of the microwave detection module, and under the same frequency band condition, the gain improvement is the only means for improving the sensitivity of the microwave detection module at present, however, the gain improvement means at present usually takes the compression of the plane beam angle of the radiation space as a cost, for example, the gain of the microwave detection module is improved mainly by the beam synthesis principle in a mode of concentrating electromagnetic radiation energy at present, but when the gain is improved, the detection distance of the microwave detection module is increased, the plane beam angle of the radiation space corresponding to the microwave detection module is greatly reduced to about 30 degrees, and the matching of the corresponding target detection space is difficult.

That is to say, the actual detection space of the existing microwave detection module is difficult to control, which correspondingly causes the situation that the actual detection space of the existing microwave detection module is not matched with the corresponding target detection space, and meanwhile, the gain of the existing microwave detection module cannot simultaneously obtain a larger plane beam angle and is difficult to match the corresponding target detection space.

Disclosure of Invention

An object of the present invention is to provide a doppler microwave detecting device and a method for increasing a gain thereof, in which the doppler microwave detecting device is configured to form a corresponding microwave beam having an energy density and a radiation distance in a directional radiation direction while increasing, thereby facilitating an increase in a detection sensitivity and a detection distance of the doppler microwave detecting device.

Another object of the present invention is to provide a doppler microwave detection device and a method for increasing a gain thereof, wherein the doppler microwave detection device has an origin, wherein an initial medium space of a sphere is defined by taking the origin as a sphere center and taking λ/2 as a radius, the initial medium space is a range of an initial electric field formed by the doppler microwave detection device by taking the origin as a zero potential point, wherein a near field medium space is defined by taking the origin as a sphere center and taking λ/2 as an inner radius and 3 λ/2 as an outer radius, the near field medium space is a range of a near field formed by the doppler microwave detection device based on electromagnetic transformation of the initial electric field, wherein a normal radiation of the microwave beam can be secured by avoiding an energy loss to the initial electric field in a manner of changing a medium state of the near field medium space with respect to an existing microwave detection module, and the energy density of the microwave beam and the radiation distance in the directional radiation direction are correspondingly changed due to the change of the energy distribution and the direction of the near field.

Another object of the present invention is to provide a doppler microwave detection device and a method for increasing a gain thereof, wherein the doppler microwave detection device includes at least one auxiliary vibrator, wherein the auxiliary vibrator is located in the near-field medium space in whole or in part, so as to form a change of a medium state of the near-field medium space with respect to an existing microwave detection module.

Another object of the present invention is to provide a doppler microwave detection device and a method for increasing a gain thereof, wherein in a state where the auxiliary vibrator is disposed in the near-field medium space in a directional radiation direction around the doppler microwave detection device, an energy density of the microwave beam formed and a radiation distance in the directional radiation direction are simultaneously increased, thereby facilitating an increase in detection sensitivity and a detection distance of the doppler microwave detection device.

Another objective of the present invention is to provide a doppler microwave detection device and a method for increasing a gain thereof, wherein in a state where the auxiliary oscillator is set in the near-field medium space in a direction of directional radiation around the doppler microwave detection device, an energy density of the microwave beam and a radiation distance in the direction of directional radiation are simultaneously increased, and accordingly, the doppler microwave detection device is suitable for detecting a human body inching motion including a human body breathing motion and a heartbeat motion in a wider distance range, so as to increase adaptability of the doppler microwave detection device to different application scenarios and improve practicability of the doppler microwave detection device.

Another object of the present invention is to provide a doppler microwave detection device and a method for increasing a gain thereof, wherein the auxiliary vibrator is preferably made of a metal having a good electric conductivity, so as to increase an energy density of the microwave beam and increase a radiation distance of the microwave beam in a directional radiation direction in a state that the auxiliary vibrator is disposed in the near-field medium space in the directional radiation direction around the doppler microwave detection device.

Another object of the present invention is to provide a doppler microwave detecting device and a method for increasing a gain thereof, wherein the initial medium space is defined to have a radius error of + λ/4 based on a change rate of an electric field in a range of λ/2 ± λ/4 from the origin point and a change rate of an electric field in a range of 3 λ/2 ± λ/4 from the origin point, the near-field medium space is defined to have an inner radius error of- λ/4 and an outer radius error of + λ/4, and a structural configuration of the auxiliary transducer and a structural configuration of an installation position of the doppler microwave detecting device are flexibly varied to meet different morphological requirements of the doppler microwave detecting device.

According to an aspect of the present invention, there is provided a doppler microwave detection device, wherein the doppler microwave detection device includes:

a planar reference ground;

a radiation source, wherein the radiation source is disposed on one side of the plane reference ground in a state of being spaced apart from the plane reference ground, wherein in a direction perpendicular to the plane reference ground, a direction from the plane reference ground to the radiation source is a directional radiation direction of the doppler microwave detection device; and

at least one auxiliary vibrator, wherein the Doppler microwave detection device has an origin point, and the origin point is taken as the center of sphere, and a near-field medium space is defined by an inner radius of lambda/2 and an outer radius of 3 lambda/2 within an error range of +/-lambda/4, so that the near-field medium space is a radiation near-field range of the Doppler microwave detection device, wherein λ is a wavelength parameter corresponding to a frequency parameter of the Doppler microwave detection device, wherein the auxiliary vibrator is disposed in the near-field medium space in whole or in part in a directional radiation direction around the Doppler microwave detection device, wherein the auxiliary vibrator is made of a metal material so as to be capable of being electrically connected to the radiation source, and coupling with the electromagnetic field in the near-field medium space to improve the gain of the Doppler microwave detection module.

In an embodiment, the radiation source is arranged in a metal layer and has a conductive surface with a circumference larger than or equal to λ/2, wherein the conductive surface of the radiation source and the reference ground are arranged in a parallel state and spaced from each other, and the origin is located at a projection point of a physical center point of the conductive surface of the radiation source on the plane reference ground in a direction perpendicular to the plane reference ground.

In an embodiment, the radiation source is arranged in a dual-coupled polar configuration and comprises a first radiation source and a second radiation source, wherein the second radiation source has a second feeding end, the first radiation source has a first feeding end, wherein the second feeding end and the first feeding end are close to each other, wherein the second radiation source is a conductor extending from the second feeding end, wherein the first radiation source is a conductor extending from the first feeding end, and wherein the origin is located at a midpoint of a connecting line of the first feeding end and the second feeding end.

In one embodiment, the radiation source is arranged in a half-wave oscillator form, wherein the radiation source has an electrical length equal to or greater than 1/2 and equal to or less than 3/4, and has two coupling sections, wherein each coupling section has an electrical length equal to or greater than 1/6, one end of each coupling section is a feeding end of the coupling section, and the other end of each coupling section is two ends of the radiation source, wherein the distance between the two feeding ends is equal to or less than λ/4, the distance between the two ends of the radiation source is equal to or greater than λ/128 and equal to or less than λ/6, so that the two ends of the radiation source can be coupled with each other by forming a phase difference in a state that the radiation is fed by being respectively connected to two poles of an excitation signal or an excitation signal having a phase difference, wherein the radiation source is spaced from the plane reference ground in a state where a distance between both ends thereof and the plane reference ground is λ/128 or more and λ/6 or less.

In an embodiment, the radiation source is arranged in a half-wave dipole form, wherein the radiation source has a wavelength electrical length greater than or equal to 1/2 and less than or equal to 3/4, wherein the radiation source is folded back to form a state in which a distance between both ends of the radiation source is greater than or equal to λ/128 and less than or equal to λ/6, wherein the radiation source has a feeding point to be coupled to each other with a phase difference tending to reverse in a state in which the radiation source is fed from the feeding point by being connected to a corresponding excitation signal, wherein the radiation source is spaced from the plane reference with a distance between both ends thereof and the plane reference ground greater than or equal to λ/128, and wherein a state in which a distance between at least one end thereof and the plane reference ground is less than or equal to λ/6.

In an embodiment, the auxiliary oscillator is configured as a ring, wherein an inner radius of the ring-shaped auxiliary oscillator is greater than or equal to λ/4 and less than or equal to 7 λ/4, so that the auxiliary oscillator is formed in a state where the auxiliary oscillator is wholly or partially disposed in the near-field medium space around a directional radiation direction of the doppler microwave detection device within an error range of the near-field medium space.

In one embodiment, the thickness of the auxiliary vibrator is less than or equal to 1/16 λ.

In an embodiment, the height of the auxiliary vibrator is greater than or equal to 1/4 λ and less than or equal to 1/2 λ.

In an embodiment, the auxiliary vibrator is provided with at least one groove.

In an embodiment, the number of the auxiliary vibrators is multiple, and the multiple auxiliary vibrators are arranged around the directional radiation direction of the doppler microwave detection device in a whole.

In one embodiment, in a state where the auxiliary vibrator medium as a whole is disposed around the directional radiation direction of the doppler microwave detection device, the auxiliary vibrator as a whole is annular and has an inner radius of λ/4 or more and 7 λ/4 or less.

In one embodiment, at least one of the auxiliary vibrators is movably disposed.

In an embodiment, a plurality of the auxiliary vibrators are arranged in a sheet shape, wherein the plurality of sheet-shaped auxiliary vibrators are arranged around the directional radiation direction of the doppler microwave detection device as a whole.

In one embodiment, at least one of the auxiliary vibrators is movably disposed.

In an embodiment, the auxiliary oscillator is configured in a horn shape, wherein the horn-shaped auxiliary oscillator has a receiving cavity and a radiation port communicating with the receiving cavity, wherein an inner radius of the auxiliary oscillator gradually increases from the receiving cavity to the radiation port within the range of the near-field medium space, wherein the plane reference ground and the radiation source are received in the receiving cavity, and a state that a directional radiation direction of the radiation from the doppler microwave detection device is toward the radiation port is formed.

In an embodiment, the auxiliary oscillator has a receiving groove extending from one surface of the auxiliary oscillator to the inside thereof, a radiation channel communicating with the receiving groove in the extending direction of the receiving groove, and a receiving groove bottom closing the radiation channel on the other surface of the auxiliary oscillator, wherein the receiving groove is shaped and dimensioned to allow the plane reference to be placed to the receiving groove bottom in the directional radiation direction of the doppler microwave detection device, and to form a state in which the directional radiation direction of the radiation source from the doppler microwave detection device faces the radiation channel when the plane reference is placed to the receiving groove bottom.

According to another aspect of the present invention, the present invention further provides a method for increasing a gain of a doppler microwave detection device, wherein the method for increasing a gain of a doppler microwave detection device comprises the following steps:

(A) arranging at least one auxiliary oscillator in a directional radiation direction around the Doppler microwave detection device, wherein the Doppler microwave detection device comprises a plane reference ground and a radiation source, wherein the radiation source is arranged on one side of the plane reference ground in a state of being spaced from the plane reference ground, and the directional radiation direction is a direction from the plane reference ground to the radiation source in a direction perpendicular to the plane reference ground; and

(B) and forming the shape and/or position change of the auxiliary vibrator in the medium space in a near-field medium space in a mode of adjusting the auxiliary vibrator, wherein the Doppler microwave detection device is provided with an origin, the near-field medium space is a space which takes the origin as a spherical center and is defined by lambda/2 as an inner radius and 3 lambda/2 as an outer radius within an error range of +/-lambda/4, and lambda is a wavelength parameter corresponding to a frequency parameter of the Doppler microwave detection device.

In one embodiment, the method for increasing the gain of the doppler microwave detection device further comprises the steps of: and adjusting the transmitting power of the Doppler microwave detection device.

In an embodiment, the number of the auxiliary vibrators is multiple, wherein the plurality of auxiliary vibrators are arranged around the directional radiation direction of the doppler microwave detection device in a whole manner and are in a ring shape with an inner radius of λ/4 and less than or equal to 7 λ/4 in a whole manner.

In one embodiment, the method for increasing the gain of the doppler microwave detection device further comprises the steps of: and at least one auxiliary vibrator is movably adjusted so as to form the shape and/or position change of the auxiliary vibrator in the medium space in the near-field medium space.

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

Drawings

Fig. 1A is a schematic structural diagram of a conventional microwave detection module.

Fig. 1B is a three-dimensional radiation pattern based on the structure of the microwave detection module.

Fig. 1C is a two-dimensional radiation pattern based on the structure of the microwave detection module described above.

Fig. 2A is a schematic view of a radiation principle of a doppler microwave detection device according to an embodiment of the present invention.

Fig. 2B is a perspective view illustrating a radiation principle of the doppler microwave detection device according to the above embodiment of the present invention.

Fig. 2C is a schematic view of an initial medium space range defined by the radiation principle of the doppler microwave detection device according to the above embodiment of the present invention.

Fig. 2D is a schematic diagram of a range of a near-field medium space defined by the radiation principle of the doppler microwave detection device according to the above embodiment of the present invention.

Fig. 2E is a schematic view of the radiation principle of the doppler microwave detection device according to a modified embodiment of the above-mentioned embodiment of the present invention.

Fig. 3A is a schematic structural diagram of a doppler microwave detection device according to another embodiment of the present invention.

Fig. 3B is a perspective radiation pattern of the doppler microwave detection module according to the above embodiment of the present invention.

Fig. 4A is a schematic structural diagram of the doppler microwave detection device according to a modified embodiment of the above-mentioned embodiment of the present invention.

Fig. 4B is a perspective radiation pattern of the doppler microwave detection module according to the above modified embodiment of the present invention.

Fig. 5A is a schematic structural diagram of the doppler microwave detection device according to a modified embodiment of the above-mentioned embodiment of the present invention.

Fig. 5B is a perspective radiation pattern of the doppler microwave detection module according to the above modified embodiment of the present invention.

Fig. 6A is a schematic structural diagram of the doppler microwave detection device according to a modified embodiment of the above-mentioned embodiment of the present invention.

Fig. 6B is a perspective radiation pattern of the doppler microwave detection module according to the above modified embodiment of the present invention.

Fig. 7A is a schematic structural diagram of the doppler microwave detection device according to a modified embodiment of the foregoing embodiment of the present invention.

Fig. 7B is a schematic cross-sectional structural view of the doppler microwave detection device according to the above modified embodiment of the present invention.

Fig. 7C is a perspective radiation pattern of the doppler microwave detection module according to the above modified embodiment of the present invention.

Fig. 8A is a schematic structural diagram of the doppler microwave detection device according to a modified embodiment of the above-mentioned embodiment of the present invention.

Fig. 8B is a perspective radiation pattern of the doppler microwave detection module according to the above modified embodiment of the present invention.

Fig. 9A is a schematic structural diagram of the doppler microwave detection device according to a modified embodiment of the above-mentioned embodiment of the present invention.

Fig. 9B is a perspective radiation pattern of the doppler microwave detection module according to the above modified embodiment of the present invention.

Fig. 10A is a schematic structural diagram of the doppler microwave detection device according to a modified embodiment of the foregoing embodiment of the present invention.

Fig. 10B is a perspective radiation pattern of the doppler microwave detection module according to the above modified embodiment of the present invention.

Fig. 11 is a schematic structural diagram of the doppler microwave detection device according to a modified embodiment of the foregoing embodiment of the present invention.

Fig. 12 is a schematic structural diagram of the doppler microwave detection device according to a modified embodiment of the foregoing embodiment of the present invention.

Fig. 13A is a schematic structural diagram of the doppler microwave detection device according to a modified embodiment of the above-mentioned embodiment of the present invention.

Fig. 13B is a schematic cross-sectional view of the doppler microwave detection device according to the above modified 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," "lateral," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, the above terms should not be construed as limiting the present invention.

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 should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 2A to 2D of the drawings of the present specification, the radiation principle of a doppler microwave detection device according to an embodiment of the present invention and an initial dielectric space 100 and a near-field dielectric space 200 defined based on the radiation principle are illustrated, respectively. Specifically, the doppler microwave detection device includes a plane reference ground 10 and a radiation source 20, wherein the radiation source 20 is disposed on one side of the plane reference ground 10 in a state of being spaced apart from the plane reference ground 10, so as to form a directional radiation direction of the doppler microwave detection device from the plane reference ground 10 to the radiation source 20 in a direction perpendicular to the plane reference ground 10.

Further, the doppler microwave detection device has an origin 300, wherein the origin 300 is a sphere center and λ/2 is a radius to define the spherical initial medium space 100, then the initial medium space 100 is a range of an initial electric field formed by the doppler microwave detection device with the origin 300 being a zero potential point, wherein λ is a wavelength parameter corresponding to a frequency parameter of the doppler microwave detection device, wherein the origin 300 is a sphere center, and λ/2 is an inner radius and 3 λ/2 is an outer radius to define the near-field medium space 200, then the near-field medium space 200 is a range of a radiated near field formed by the doppler microwave detection device based on electromagnetic conversion of the initial electric field.

In this embodiment of the invention, in particular, the radiation source 20 is provided in the form of a metallic layer and has a conductive surface with a circumference of λ/2 or more, wherein the conductive surface of the radiation source 20 and the plane reference ground 10 are disposed in a parallel state spaced apart from each other, in a state where the radiation source 20 is fed, the radiation source 20 can be coupled with the plane reference ground 10 to establish the initial electric field in the initial dielectric space 100, and forms the radiated near field in the near-field medium space 200 based on the alternating propagation of the electric field and the magnetic field, wherein the radiating near field forms a radiating far field based on further alternate propagation of electric and magnetic fields to form emission of a corresponding microwave beam, the corresponding origin 300 is located at a projection point of a physical center point of the conductive surface of the radiation source 20 in a direction perpendicular to the plane reference ground 10 and to the plane reference ground 10.

In particular, in some embodiments of the present invention, corresponding to fig. 2E, the radiation source 20 is configured in a dual-coupled polar configuration to include a first radiation source 21 and a second radiation source 22, wherein the second radiation source 22 has a second feeding end 221, the first radiation source 21 has a first feeding end 211, wherein the second feeding end 221 and the first feeding end 211 are close to each other, wherein the second radiation source 22 is a conductor extending from the second feeding end 221, wherein the first radiation source 21 is a conductor extending from the first feeding end 211, such that when the first radiation source 21 and the second radiation source 22 are respectively fed from the first feeding end 211 and the second feeding end 221, the first radiation source 21 is correspondingly coupled to the second radiation source 22 from the second feeding end 221 along the second feeding end 221 The corresponding position of the radiation source 22 forms a dual coupling state between the first radiation source 21 and the second radiation source 22, and the corresponding origin 300 is located at the midpoint of the connection line of the first feeding end 211 and the second feeding end 221.

That is, the near-field medium space 200 is a range of a near field formed by the doppler microwave detection device based on the electromagnetic conversion of the initial electric field, in these embodiments of the present invention, compared to an existing microwave detection module, by changing the medium state of the near-field medium space 200, energy loss to the initial electric field is avoided, so that normal radiation of the microwave beam can be ensured, and since the energy distribution and direction of the near field are changed, the energy density of the microwave beam formed correspondingly and the radiation distance in the directional radiation direction are changed, which is mainly reflected in that the energy density of the microwave beam and the radiation distance in the directional radiation direction are increased at the same time, thereby being beneficial to improving the detection sensitivity and the detection distance of the doppler microwave detection device.

Specifically, referring to fig. 3A to fig. of the drawings of the specification of the present invention, based on the manner of changing the medium state of the near-field medium space 200, the structure of the doppler microwave detection device and the radiation pattern corresponding to the structure of the doppler microwave detection device of different embodiments are respectively illustrated, specifically, wherein the doppler detection device includes at least one auxiliary oscillator 40, wherein the auxiliary oscillator 40 is disposed wholly or partially in the near-field medium space 200, specifically disposed wholly or partially in the near-field medium space 200 in a directional radiation direction around the doppler microwave detection device, so as to form a change of the medium state of the near-field medium space 200, specifically an increase of the energy density of the microwave beam and an increase of the radiation distance of the microwave beam in the directional radiation direction, relative to an existing microwave detection module, thereby improving the detection sensitivity and the detection distance of the Doppler microwave detection device.

It is worth mentioning that, based on the fact that the electric fields within a range of λ/2 ± λ/4 from the origin point have the same change rate and the electric fields within a range of 3 λ/2 ± λ/4 from the origin point have the same change rate, the initial medium space 100 is defined to have a radius error of + λ/4, the near-field medium space 200 is defined to have an inner radius error of- λ/4 and an outer radius error of + λ/4, and the structure configuration of the auxiliary vibrator 40 and the installation position of the doppler microwave detection device are flexibly varied.

In particular, in a state where the radiation source 20 is fed, the supplementary vibrator 40 is coupled with the electromagnetic field in the near-field medium space 200, and the supplementary vibrator 40 generates resonance of the same frequency as the radiation source 20, thereby improving radiation efficiency, increasing the energy density of forming the microwave beam and the radiation distance in the directional radiation direction at the same time, and improving the detection sensitivity and the detection distance of the doppler microwave detection device.

It is worth mentioning that, the auxiliary oscillator 40 is made of a metal material, so that in the state that the radiation source 20 is fed, the auxiliary oscillator 40 is coupled with the electromagnetic field in the near-field medium space 200, and the auxiliary oscillator 40 generates resonance with the same frequency as the radiation source 20, thereby improving radiation efficiency, increasing the energy density of the microwave beam and the radiation distance in the directional radiation direction, and improving the detection sensitivity and the detection distance of the doppler microwave detection device.

Specifically, referring to fig. 3A and 3B of the drawings attached to the present specification, in this embodiment of the present invention, wherein the auxiliary vibrator 40 is disposed in a directional radiation direction around the doppler microwave detection device, in detail, wherein the auxiliary vibrator 40 is disposed in a ring shape to be disposed in the near-field medium space 200 around the directional radiation direction of the doppler microwave detection device, thereby facilitating to secure energy density of the directional radiation direction of the doppler microwave detection device, secure normal radiation of the microwave beam, and simultaneously change the energy distribution and direction of the initial electric field in a radial direction of the directional radiation direction of the doppler microwave detection device, corresponding to the change of the energy density of the formed microwave beam and the radiation distance in the directional radiation direction, corresponding to fig. 3B, in this embodiment, the gain of the Doppler microwave detection device in the directional radiation direction is larger than 10dB, and is greatly improved compared with the existing microwave detection module, specifically the improvement of the energy density of the microwave beam and the increase of the radiation distance of the microwave beam in the directional radiation direction.

It should be noted that, corresponding to fig. 3B, the beam angle of the microwave beam of the doppler microwave detection device of the embodiment of the present invention shown in fig. 3A is narrowed to a certain extent compared with the existing microwave detection module, wherein the narrowing of the beam angle of the microwave beam is realized by increasing the energy density of the microwave beam and the radiation distance in the directional radiation direction at the same time, so as to be beneficial to improving the detection sensitivity and the detection distance of the doppler microwave detection device, and the doppler microwave detection device is suitable for detecting the human body micromotion action including the human body respiratory action and the heartbeat action in a larger distance range.

Referring further to fig. 4A and 4B of the drawings of the present specification, in contrast to the doppler microwave detection device shown in fig. 3A, in this embodiment, the thickness of the auxiliary oscillator 40 is reduced, and the gain of the doppler microwave detection device in the directional radiation direction is greater than 9.4dB, which is greatly improved compared to the existing microwave detection module.

Referring further to fig. 5A and 5B of the drawings of the specification of the present invention, different from the doppler microwave detection device shown in fig. 4A, in this embodiment, the height of the auxiliary oscillator 40 is increased, and corresponding to fig. 5B, the gain of the doppler microwave detection device in the directional radiation direction is greater than 10dB, which is greatly improved compared with the existing microwave detection module, and is specifically embodied as an increase in the energy density of the microwave beam and an increase in the radiation distance of the microwave beam in the directional radiation direction, so as to improve the detection sensitivity and the detection distance of the doppler microwave detection device.

Specifically, referring to fig. 6A and 6B, a structure of a modified embodiment of the microwave detecting device and a radiation pattern corresponding to the structure are respectively illustrated, wherein the auxiliary vibrator 40 is disposed in a directional radiation direction around the doppler microwave detecting device, in detail, wherein the auxiliary vibrator 40 is horn-shaped to be disposed in the near-field medium space 200 in the directional radiation direction around the doppler microwave detecting device, wherein the auxiliary vibrator 40 that is horn-shaped has a housing cavity 51 and a radiation port 52 communicating with the housing cavity 51, wherein the plane reference ground 10 and the radiation source 20 are housed in the housing cavity 51 in a state that the radiation source 20 is directed toward the radiation port 52 in the directional radiation direction of the doppler microwave detecting device, wherein an inner radius of the auxiliary vibrator 40 gradually increases from the housing cavity 51 to the radiation port 52 in the range of the near-field medium space 200 As shown in fig. 6B, the gain of the doppler microwave detection device in the directional radiation direction is greater than 12dB, which is greatly improved compared with the existing microwave detection module, specifically, the gain is improved by the energy density of the microwave beam and the radiation distance of the microwave beam in the directional radiation direction, so that the detection sensitivity and the detection distance of the doppler microwave detection device are improved.

Further, referring specifically to fig. 7A to 7C, in this embodiment of the present invention, wherein the supplementary vibrator 40 is disposed in a directional radiation direction around the doppler microwave detection device, in detail, the supplementary vibrator 40 has a receiving groove 41 extending from one surface of the supplementary vibrator 40 toward the inside thereof and a radiation channel 42 communicating with the receiving groove 41 in the extending direction of the receiving groove 41 and a receiving groove bottom 43 closing the radiation channel 42 disposed on the other surface of the supplementary vibrator 40, wherein the receiving groove 41 is sized in shape to allow the plane reference ground 10 to be disposed on the receiving groove bottom 43 in the directional radiation direction of the doppler microwave detection device such that the plane reference ground 10 is disposed on the receiving groove 41, such that when the plane reference ground 10 is disposed on the receiving groove 41 in a state that the radiation source 20 faces the radiation channel 42, forming the radiation source 20 in a state that the directional radiation direction of the doppler microwave detection device faces the radiation channel 42, thereby being beneficial to ensuring the energy density of the directional radiation direction of the doppler microwave detection device, ensuring the normal radiation of the microwave beam, and simultaneously changing the energy distribution and direction of the initial electric field in the radial direction of the directional radiation direction of the doppler microwave detection device, correspondingly forming the energy density of the microwave beam and changing the radiation distance in the directional radiation direction, which corresponds to fig. 3B, in this embodiment, the gain of the doppler microwave detection device in the directional radiation direction is greater than 10dB, which is greatly improved compared with the existing microwave detection module, specifically embodied as the improvement of the energy density of the microwave beam and the increase of the radiation distance of the microwave beam in the directional radiation direction, it is worth mentioning that the bottom 43 of the accommodating groove is also made of a metal material, so as to further improve the radiation efficiency and the detection sensitivity and the detection distance of the doppler microwave detection device.

It is worth mentioning that, in some embodiments of the present invention, as shown in fig. 8A in particular, the radiation source 20 is disposed in a half-wave oscillator configuration, wherein the radiation source 20 has an electrical length equal to or greater than 1/2 and equal to or less than 3/4, and has two coupling segments 201, wherein each coupling segment 201 has an electrical length equal to or greater than 1/6, one end of each coupling segment 201 is a feeding end 2011 of the coupling segment, and the other end of each coupling segment 201 is two ends of the radiation source 20, wherein a distance between the feeding ends 2011 is equal to or less than λ/4, a distance between two ends of the radiation source 20 is equal to or greater than λ/128 and equal to or less than λ/6, and the radiation source 20 is spaced from the plane reference ground 10 by a distance between two ends of the radiation source 20 and the plane reference ground 10 being equal to or greater than λ/128 and equal to or less than λ/6 In this way, when the two feeding terminals 2011 are respectively connected to two poles of an excitation signal or connected to an excitation signal with a phase difference to feed the radiation source 20, a phase difference tending to be opposite can be formed between the two ends of the radiation source 20, so that the energy mutually coupled between the two coupling sections 201 of the radiation source 20 tends to be maximized to improve the gain of the doppler microwave detection device, and an obvious resonance frequency point is generated in a state that the distance range between the two ends of the radiation source 20 is greater than or equal to λ/128 and less than or equal to λ/6 and is close to the plane reference ground 10, specifically, as shown in fig. 8B, the gain of the doppler microwave detection device in the directional radiation direction is greater than 10dB, which is greatly improved compared with the existing microwave detection module.

Further, in this modified embodiment shown in fig. 8A, the doppler microwave detection device further includes two power feeding lines 203, wherein the two power feeding lines 203 are electrically connected to the corresponding power feeding terminals 2011, respectively, so that the radiation source 20 is fed by the power feeding terminals 2011 of the radiation source 20 in a state where the two power feeding lines 203 are electrically coupled to the corresponding power feeding sources to switch in two poles of the power excitation signals or switch in the power excitation signals with a phase difference, and in a state where the radiation source 20 is spaced from the planar reference ground 10 through the electrical connection of the power feeding lines 203 and the power feeding terminals 2011.

In particular, in some embodiments of the present invention, as shown in fig. 9A in particular, wherein the radiation source 20 is also disposed in a half-wave oscillator configuration, wherein the radiation source 20 has a wavelength electrical length greater than or equal to 1/2 and less than or equal to 3/4, wherein the radiation source 20 has a wavelength electrical length greater than or equal to 1/2 and less than or equal to 3/4, wherein the radiation source 20 is folded back to form a state in which a distance between two ends thereof is greater than or equal to λ/128 and less than or equal to λ/6, wherein the radiation source 20 has a feeding point 202, wherein the radiation source 20 is spaced from the plane reference ground 10 by a distance between two ends thereof and the plane reference ground 10 which is greater than or equal to λ/128, and wherein at least one end is spaced from the plane reference ground 10 by a distance of less than or equal to λ/6, wherein, in a state that the radiation source 20 is fed by being connected to a corresponding excitation signal at the feeding point 202, two ends of the radiation source 20 can form a phase difference tending to be opposite in phase to each other and have relatively high coupling energy, and then when the radiation source 20 is disposed at a distance of λ/128 or more between two ends thereof and the plane reference ground 10 and spaced apart from the plane reference ground 10 in a state that at least one end thereof is spaced apart from the plane reference ground 10 by a distance of λ/6 or less between two ends thereof, energy directly coupled between the end of the radiation source 20 and the plane reference ground 10 can be reduced, so that a significant resonant frequency point can be generated based on the coupling between two ends of the radiation source 20 while forming directional radiation of the doppler microwave detection device, which correspondingly facilitates matching with a corresponding target space and has selectivity for a received reflected echo, referring to fig. 9B specifically, in the embodiment of the doppler microwave detection device shown in fig. 9A, the gain of the doppler microwave detection device in the directional radiation direction is as high as 12dB, which is greatly improved compared to the existing microwave detection module, and is specifically embodied as improvement of the energy density of the microwave beam and increase of the radiation distance of the microwave beam in the directional radiation direction, so as to improve the detection sensitivity and the detection distance of the doppler microwave detection device.

Further, in this modified embodiment shown in fig. 9A, the doppler microwave detection device further includes a plurality of feeding lines 203 corresponding to the number of the radiation sources 20, wherein one end of each of the feeding lines 203 is electrically connected to the feeding point 202, so that when the feeding line 203 is electrically coupled with the corresponding excitation source at the other end thereof to receive the excitation signal, the feeding line 203 feeds the radiation source 20 at the feeding point 202 of the radiation source 20 in a state where the feeding point 202 is spaced from the plane reference ground 10 through the feeding line 203, and particularly, the feeding line 203 is fixed to the corresponding circuit board in a pin shape and is electrically coupled with the corresponding excitation source to receive the excitation signal.

It should be noted that, referring to fig. 10A of the drawings of the specification of the present invention, different from fig. 9A, the doppler microwave detecting device further includes a microstrip transmission line 204, wherein the microstrip transmission line 204 extends at a distance of λ/16 or less from the plane reference ground 10 in a state where one end of the microstrip transmission line 204 is connected to the feeding line 203, so as to satisfy corresponding impedance matching and reduce the loss of the microstrip transmission line 204 in a state where the distance between the two ends of the radiation source 20 and the plane reference ground 10 is λ/128 or more, so that when the microstrip transmission line 204 is electrically coupled to the corresponding excitation source at the other end thereof to receive the excitation signal, the radiation source 20 is fed at the feeding point 202 of the radiation source 20 through the feeding line 203 by the feeding line 202 of the radiation source 20, it should be noted that, referring to fig. 10B specifically, in the embodiment of the doppler microwave detection device shown in fig. 10A, the gain of the doppler microwave detection device in the directional radiation direction is greater than 11dB, which is greatly improved compared to the existing microwave detection module.

Specifically, the microstrip transmission line 204 is fixed to the corresponding circuit board in a mounting manner and electrically coupled to the corresponding excitation source to receive the excitation signal, while in other embodiments of the present invention, the microstrip transmission line 204 is fixed to the corresponding circuit board in a pin manner and electrically coupled to the corresponding excitation source to receive the excitation signal.

In addition, particularly, in a state where the microstrip transmission line 204 is spaced from the plane reference ground 10 within a distance range of λ/16 or less, the extending direction and the structural form of the microstrip transmission line 204 may be varied, and the microstrip transmission line 204 is allowed to be bent and extended to adapt to the size and the line arrangement of the corresponding circuit board.

It should be noted that, in some embodiments of the present invention, the number of the auxiliary vibrators 40 may be set as one, or set as a plurality and set integrally around the directional radiation direction of the doppler microwave detection device, wherein the auxiliary vibrators 40 are movably set, specifically, movably set in the directional radiation direction of the doppler microwave detection device, and include, but not limited to, a movable movement in the directional radiation direction of the doppler microwave detection device based on a rotation movement, a sliding rail movement, or other movement manners.

Referring specifically to fig. 11 of the drawings of the present specification, in this embodiment of the present invention, the number of the auxiliary vibrators 40 is two, and the two auxiliary vibrators 40 are wholly or partially disposed in the near-field medium space 200 around the directional radiation direction of the doppler microwave detection device, in detail, the two auxiliary vibrators 40 are wholly or partially disposed in the near-field medium space 200 around the directional radiation direction of the doppler microwave detection device in a ring shape, wherein at least one of the auxiliary vibrators 40 is movably disposed, including but not limited to a reciprocal turning motion, a rotation motion, and a movement motion in a corresponding direction formed based on a rotation motion, a sliding motion, or other motion modes, so as to form an adjustment of the medium state of the near-field medium space 200 based on the motion adjustment of the auxiliary vibrators 40 to adjust the energy distribution and direction of the radiated near field, specifically, the improvement of the energy density of the microwave beam and the increase of the radiation distance of the microwave beam in the directional radiation direction are formed, so that the detection sensitivity and the detection distance of the Doppler microwave detection device are improved.

That is, the number of the auxiliary vibrators 40 is allowed to be plural, the plurality of auxiliary vibrators 40 are entirely or partially disposed in the near-field medium space 200 in a ring shape around the directional radiation direction of the doppler microwave detection device, the adjustment of the medium state of the near-field medium space 200 is formed to adjust the energy distribution and direction of the radiated near field, and specifically, the improvement of the energy density of the microwave beam and the increase of the radiation distance of the microwave beam in the directional radiation direction are formed, so that the detection sensitivity and the detection distance of the doppler microwave detection device are improved, which is not limited by the present invention.

In particular, further reference is made to fig. 12 of the drawings accompanying the present specification, wherein the number of the auxiliary vibrators 40 is one, wherein the auxiliary vibrators 40 are provided with grooves, wherein the auxiliary vibrators 40 are arranged in a ring shape to be arranged in the near-field medium space 200 around the directional radiation direction of the doppler microwave detection device, so as to form a change of the medium state of the near-field medium space 200, in particular, an increase of the energy density of the microwave beam and an increase of the radiation distance of the microwave beam in the directional radiation direction, with respect to an existing microwave detection module, thereby improving the detection sensitivity and the detection distance of the doppler microwave detection device.

In other words, in these embodiments of the present invention, the auxiliary vibrator 40 is disposed entirely or partially in the near-field medium space 200, specifically disposed entirely or partially in the near-field medium space 200 in a directional radiation direction around the doppler microwave detection device, the structure of the auxiliary vibrator 40 can be varied, but the present invention is not limited thereto, and wherein based on the electric field having a co-directional rate of change within a range of lambda/2 lambda/4 from the origin, and the electric field within 3 lambda/2 + -lambda/4 from the origin has the same directional rate of change, the definition of the initial medium space 100 allows a radius error of + lambda/4, the definition of the near-field medium space 200 allows the inner radius error of-lambda/4 and the outer radius error of + lambda/4, and the installation position structure of the auxiliary vibrator 40 on the doppler microwave detection device is flexible and variable.

In particular, referring to fig. 13A and 13B of the drawings of the present specification, wherein the number of the auxiliary vibrators 40 is four, four of the auxiliary vibrators are wholly or partially disposed in the near-field medium space 200 around the directional radiation direction of the doppler microwave detection device, in detail, a plurality of the auxiliary vibrators 40 are disposed in a sheet shape and wholly or partially disposed in the near-field medium space 200 around the directional radiation direction of the doppler microwave detection device, wherein at least one of the auxiliary vibrators 40 is movably disposed, as shown in fig. 10B, including but not limited to a reciprocal turning motion, a rotating motion and a moving motion in a corresponding direction formed based on a rotating motion, a sliding motion or other motion, so as to form an adjustment of the medium state of the near-field medium space 200 based on the motion adjustment of the auxiliary vibrator 40 to adjust the energy distribution and direction of the radiated near field, specifically, the improvement of the energy density of the microwave beam and the increase of the radiation distance of the microwave beam in the directional radiation direction are formed, so that the detection sensitivity and the detection distance of the Doppler microwave detection device are improved.

It is worth mentioning that the transmission power of the doppler microwave detection device is allowed to be adjusted. Specifically, based on the adjustment of the auxiliary vibrator 40 to the medium state of the near-field medium space 200, the transmission power of the doppler microwave detection device is correspondingly adjusted. For example: when the auxiliary oscillator 40 adjusts the medium state of the near-field medium space 200 to increase the energy density of the microwave beam and increase the radiation distance of the microwave beam in the directional radiation direction, the transmission power of the doppler microwave detection device is correspondingly increased to a corresponding value or a corresponding level, so as to further increase the effective radiation power of a target detection area, and further improve the detection sensitivity and the like. Thus, based on the adjustment of the auxiliary oscillator 40 to the medium state of the near-field medium space 200, the sensitivity, stability, installation height adaptability and the like of microwave detection are improved by combining the corresponding adjustment of the transmission power of the doppler microwave detection device.

To further understand the present invention, the present invention further provides a method for increasing a gain of a doppler microwave detection device, wherein the method for increasing a gain of a doppler microwave detection device comprises the following steps:

(A) arranging at least one auxiliary vibrator 40 in a directional radiation direction around the doppler microwave detection device, wherein the doppler microwave detection device comprises a plane reference ground 10 and a radiation source 20, wherein the radiation source 20 is arranged on one side of the plane reference ground 10 in a state of being spaced from the plane reference ground 10, and wherein the directional radiation direction is a direction from the plane reference ground 10 to the radiation source 20 in a direction perpendicular to the plane reference ground 10; and

(B) the shape and/or position of the auxiliary vibrator 40 in the near-field medium space 200 is changed by adjusting the auxiliary vibrator 40, wherein the doppler microwave detection device has an origin 300, wherein the near-field medium space 200 is a space defined by an inner radius of λ/2 and an outer radius of 3 λ/2 within an error range of ± λ/4 with the origin 300 as a spherical center, where λ is a wavelength parameter corresponding to a frequency parameter of the doppler microwave detection device.

In particular, the method for increasing the gain of the doppler microwave detection device further comprises the steps of: adjusting the transmission power of the doppler microwave detection device, specifically, adjusting the transmission power of the doppler microwave detection device correspondingly based on the adjustment of the auxiliary vibrator 40 on the medium state of the near-field medium space 200. For example: when the auxiliary oscillator 40 adjusts the medium state of the near-field medium space 200 to increase the energy density of the microwave beam and increase the radiation distance of the microwave beam in the directional radiation direction, the transmission power of the doppler microwave detection device is correspondingly increased to a corresponding value or a corresponding level, so as to further increase the effective radiation power of a target detection area, and further improve the detection sensitivity and the like. Thus, based on the adjustment of the auxiliary oscillator 40 to the medium state of the near-field medium space 200, the sensitivity, stability, installation height adaptability and the like of microwave detection are improved by combining the corresponding adjustment of the transmission power of the doppler microwave detection device.

It is worth mentioning that, in some embodiments of the present invention, the auxiliary vibrator 40 is configured as a ring shape, wherein an inner radius of the ring-shaped auxiliary vibrator 40 is greater than or equal to λ/4 and less than or equal to 7 λ/4, so that the auxiliary vibrator 40 is formed to be entirely or partially disposed in the near-field medium space 200 around a directional radiation direction of the doppler microwave detection device within a tolerance range of the near-field medium space 200.

Particularly, in some embodiments of the present invention, wherein the number of the auxiliary vibrator 40 is plural, wherein the plural auxiliary vibrators 40 are integrally arranged around the directional radiation direction of the doppler microwave detection device and integrally form a ring shape having an inner radius of λ/4 and 7 λ/4 or less, it is worth mentioning that the method for improving the gain of the doppler microwave detection device further comprises the steps of: and actively adjusting at least one auxiliary vibrator 40 to form the shape and/or position change of the auxiliary vibrator 40 in the near-field medium space 200.

It should be noted that, in some embodiments, the auxiliary vibrator 40 is configured to be horn-shaped, wherein the horn-shaped auxiliary vibrator 40 has a receiving cavity 51 and a radiation port 52 communicating with the receiving cavity 51, wherein an inner radius of the auxiliary vibrator 40 gradually increases from the receiving cavity 51 to the radiation port 52 within the near-field medium space 200, wherein the plane reference ground 10 and the radiation source 10 are received in the receiving cavity 51, and a state that the radiation source 20 faces the radiation port 52 in a directional radiation direction of the doppler microwave detection device is formed.

Specifically, in some embodiments of the present invention, the auxiliary vibrator 40 has a receiving groove 41 extending from one side of the auxiliary vibrator 40 toward the inside thereof, a radiation channel 42 communicating with the receiving groove 41 in the extending direction of the receiving groove 41, and a receiving groove bottom 43 closing the radiation channel 42 and disposed on the other side of the auxiliary vibrator 40, wherein the receiving groove 41 is shaped and dimensioned to allow the plane reference ground 10 to be placed on the receiving groove bottom 43 in the directional radiation direction of the doppler microwave detection device, and to form a state where the radiation source 20 is directed toward the radiation channel 42 in the directional radiation direction of the doppler microwave detection device when the plane reference ground 10 is placed on the receiving groove bottom 43.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims

1. A doppler microwave probe apparatus, comprising:

a planar reference ground;

2. Doppler microwave detection device according to claim 1, wherein the radiation source is provided in the form of a metal layer and has a conductive surface with a circumference of λ/2 or more, wherein the conductive surface of the radiation source and the plane reference ground are provided in a parallel state spaced apart from each other, wherein the origin is located at a projection point of a physical center point of the conductive surface of the radiation source to the plane reference ground in a direction perpendicular to the plane reference ground.

3. Doppler microwave detection apparatus according to claim 1, wherein the radiation source is arranged in a dual coupled pole configuration comprising a first radiation source and a second radiation source, wherein the second radiation source has a second feed end, the first radiation source has a first feed end, wherein the second feed end and the first feed end are close to each other, wherein the second radiation source is a conductor extending end-wise from the second feed end, wherein the first radiation source is a conductor extending end-wise from the first feed end, wherein the origin is located at the midpoint of a connection line of the first feed end and the second feed end.

4. The Doppler microwave detection device according to claim 1, wherein said radiation source is provided in a half-wave oscillator configuration, wherein said radiation source has an electrical length of 1/2 or more and 3/4 or less in wavelength, and has two coupled sections, wherein each of said coupled sections has an electrical length of 1/6 or more in wavelength, one end of each of said coupled sections is a feeding end of said coupled section, and the other end of each of said coupled sections is a both ends of said radiation source, wherein a distance between said feeding ends is λ/4 or less, a distance between said radiation source ends is λ/128 or more and λ/6 or less, in a state where said radiation source is fed from both poles of said feeding ends which are respectively connected to an excitation signal or to an excitation signal having a phase difference, the two ends of the radiation source can form a phase difference to be coupled with each other, wherein the radiation source is spaced from the plane reference ground in a state that the distance between the two ends of the radiation source and the plane reference ground is more than or equal to lambda/128 and less than or equal to lambda/6.

5. Doppler microwave detection device according to claim 1, wherein the radiation source is arranged in a half wave dipole pattern, wherein the radiation source has a wavelength electrical length equal to or greater than 1/2 and equal to or less than 3/4, wherein the radiation source is folded back to form a state in which a distance between both ends thereof is λ/128 or more and λ/6 or less, wherein the radiation source has a feeding point, so that in a state where the radiation source is fed by being connected to a corresponding excitation signal from the feeding point, both ends of the radiation source can be coupled to each other with a phase difference tending to be in anti-phase, wherein the distance between both ends of the radiation source and the plane reference ground is more than or equal to lambda/128, and the state that the distance between at least one end and the plane reference ground is less than or equal to lambda/6 is spaced from the plane reference ground.

6. The doppler microwave detection device according to any one of claims 2 to 5, wherein the subsidiary vibrator is provided in a ring shape, wherein an inner radius of the subsidiary vibrator in the ring shape is equal to or larger than λ/4 and equal to or smaller than 7 λ/4, so that the subsidiary vibrator is formed in a state of being disposed entirely or partially in the near-field medium space around a directional radiation direction of the doppler microwave detection device within a tolerance range of the near-field medium space.

7. The doppler microwave detection device according to claim 6, wherein a thickness of the subsidiary vibrator is 1/16 λ or less.

8. The doppler microwave detection device according to claim 6, wherein a height of the subsidiary vibrator is 1/4 λ or more and 1/2 λ or less.

9. Doppler microwave detection device according to claim 6, wherein said supplementary vibrator is provided with at least one groove.

10. The doppler microwave detection device according to any one of claims 2 to 5, wherein the number of the assist elements is plural, and the plural assist elements are arranged around a directional radiation direction of the doppler microwave detection device as a whole.

11. The doppler microwave detection device according to claim 10, wherein the assist vibrator medium as a whole has a ring shape and has an inner radius of λ/4 or more and 7 λ/4 or less in a state where the assist vibrator medium as a whole is disposed around a directional radiation direction of the doppler microwave detection device.

12. The doppler microwave detection device according to claim 11, wherein at least one of said assist vibrators is movably disposed.

13. The doppler microwave detection device according to claim 10, wherein a plurality of the supplementary vibrators are provided in a sheet shape, wherein the plurality of sheet-shaped supplementary vibrators are provided in a whole around a directional radiation direction of the doppler microwave detection device.

14. The doppler microwave detection device according to claim 13, wherein at least one of said assist vibrators is movably disposed.

15. The doppler microwave detecting device according to any one of claims 2 to 5, wherein the auxiliary vibrator is formed in a horn shape, wherein the horn shape of the auxiliary vibrator has a receiving cavity and a radiation port communicating with the receiving cavity, wherein an inner radius of the auxiliary vibrator gradually increases from the receiving cavity to the radiation port within the range of the near-field medium space, wherein the plane reference ground and the radiation source are received in the receiving cavity, and a state that a directional radiation direction of the radiation from the doppler microwave detecting device is toward the radiation port is formed.

16. The doppler microwave detecting device according to any one of claims 2 to 5, wherein the supplementary vibrator has a receiving groove extending from one surface of the supplementary vibrator toward an inside thereof, and a radiation channel communicating with the receiving groove in an extending direction of the receiving groove, and a bottom of the receiving groove being provided on the other surface of the supplementary vibrator to close the radiation channel, wherein the receiving groove is shaped and dimensioned to allow the plane reference ground to be placed to the bottom of the receiving groove in a directional radiation direction of the doppler microwave detecting device, and to form a state in which the directional radiation direction of the radiation source from the doppler microwave detecting device is directed to the radiation channel when the plane reference ground is placed to the bottom of the receiving groove.

17. The method for improving the gain of the Doppler microwave detection device is characterized by comprising the following steps of:

18. The method for increasing gain of a doppler microwave detection device according to claim 17, wherein the method for increasing gain of a doppler microwave detection device further comprises the steps of: and adjusting the transmitting power of the Doppler microwave detection device.

19. The method for improving gain of a doppler microwave detecting device according to claim 18, wherein said radiation source is provided in a metal layer form and has a conductive surface having a circumference of λ/2 or more, wherein said conductive surface of said radiation source and said reference ground are provided in a parallel state spaced apart from each other, wherein said origin point is located at a projected point of a physical center point of said conductive surface of said radiation source in a direction perpendicular to said plane reference ground.

20. The method for improving gain of a doppler microwave detection device according to claim 18, wherein said radiation source is disposed in a dual coupled polar configuration comprising a first radiation source electrode and a second radiation source electrode, wherein said second radiation source electrode has a second feeding end, said first radiation source electrode has a first feeding end, wherein said second feeding end and said first feeding end are close to each other, wherein said second radiation source electrode is a conductor extended at said second feeding end, wherein said first radiation source electrode is a conductor extended at said first feeding end, wherein said origin point is located at a midpoint of a connecting line of said first feeding end and said second feeding end.

21. The method for improving gain of a doppler microwave detecting device according to claim 18, wherein said radiation source is provided in a half-wave oscillator form, wherein said radiation source has an electrical length of 1/2 or more and 3/4 or less, and has two coupled sections, wherein each of said coupled sections has an electrical length of 1/6 or more, one end of each of said coupled sections is a feeding end of said coupled section, and the other end of each of said coupled sections is a both ends of said radiation source, wherein a distance between said feeding ends is λ/4 or less, a distance between said both ends of said radiation source is λ/128 or more and λ/6 or less, in a state where said radiation is fed from both poles of said feeding ends respectively connected to an excitation signal or connected to an excitation signal having a phase difference, the two ends of the radiation source can form a phase difference to be coupled with each other, wherein the radiation source is spaced from the plane reference ground in a state that the distance between the two ends of the radiation source and the plane reference ground is more than or equal to lambda/128 and less than or equal to lambda/6.

22. The method for improving gain of a Doppler microwave detecting device according to claim 18, wherein the radiation source is arranged in a half-wave dipole formation, wherein the radiation source has a wavelength electrical length of 1/2 or more and 3/4 or less, wherein the radiation source is folded back to form a state in which a distance between both ends thereof is λ/128 or more and λ/6 or less, wherein the radiation source has a feeding point, so that in a state where the radiation source is fed by being connected to a corresponding excitation signal from the feeding point, both ends of the radiation source can be coupled to each other with a phase difference tending to be in anti-phase, wherein the distance between both ends of the radiation source and the plane reference ground is more than or equal to lambda/128, and the state that the distance between at least one end and the plane reference ground is less than or equal to lambda/6 is spaced from the plane reference ground.

23. The method for improving gain of a doppler microwave detection device according to any one of claims 19 to 22, wherein the supplementary vibrator is provided in a ring shape, wherein an inner radius of the supplementary vibrator in the ring shape is equal to or greater than λ/4 and equal to or less than 7 λ/4, so that the supplementary vibrator is formed in a state where the supplementary vibrator is disposed entirely or partially in the near-field medium space around a directional radiation direction of the doppler microwave detection device within a tolerance range of the near-field medium space.

24. The method for improving gain of a doppler microwave detection device according to any one of claims 19 to 22, wherein the number of the auxiliary vibrator is plural, wherein the plural auxiliary vibrators are integrally arranged around a directional radiation direction of the doppler microwave detection device and integrally have a ring shape having an inner radius of λ/4 and 7 λ/4 or less.

25. The method for increasing gain of a doppler microwave detection device according to claim 24, wherein the method for increasing gain of a doppler microwave detection device further comprises the steps of: and at least one auxiliary vibrator is movably adjusted so as to form the shape and/or position change of the auxiliary vibrator in the medium space in the near-field medium space.

26. The method for improving gain of a doppler microwave detecting device according to any one of claims 19 to 22, wherein the auxiliary vibrator is formed in a horn shape, wherein the horn-shaped auxiliary vibrator has a receiving cavity and a radiation port communicating with the receiving cavity, wherein an inner radius of the auxiliary vibrator gradually increases from the receiving cavity to the radiation port in a range of the near-field medium space, wherein the plane reference ground and the radiation source are received in the receiving cavity, and a state that a directional radiation direction of the radiation from the doppler microwave detecting device is directed to the radiation port is formed.

27. The doppler microwave detecting device gain increasing method according to any one of claims 19 to 22, wherein the supplementary vibrator has a receiving groove extending from one side of the supplementary vibrator toward the inside thereof, and a radiation channel communicating with the receiving groove in an extending direction of the receiving groove, and a bottom of the receiving groove being provided on the other side of the supplementary vibrator to close the radiation channel, wherein the receiving groove is shaped and dimensioned to allow the plane reference ground to be placed on the bottom of the receiving groove in a directional radiation direction of the doppler microwave detecting device, and to form a state in which the directional radiation direction of the radiation source from the doppler microwave detecting device is directed toward the radiation channel when the plane reference ground is placed on the bottom of the receiving groove.