CN217239740U - Directional microwave detection antenna - Google Patents
Directional microwave detection antenna Download PDFInfo
- Publication number
- CN217239740U CN217239740U CN202220345437.9U CN202220345437U CN217239740U CN 217239740 U CN217239740 U CN 217239740U CN 202220345437 U CN202220345437 U CN 202220345437U CN 217239740 U CN217239740 U CN 217239740U
- Authority
- CN
- China
- Prior art keywords
- strip
- directional microwave
- directional
- shaped
- antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/06—Details
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Geophysics And Detection Of Objects (AREA)
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The utility model provides a directional microwave detection antenna, wherein the directional microwave detection antenna comprises a reference ground and a strip-shaped vibrator, wherein the strip-shaped element has a wavelength electrical length of 1/4 or more and 3/2 or less, wherein the bar-shaped vibrator extends from both end portions thereof on the same side of the reference ground, the bar-shaped vibrator having two coupling sections, wherein one end of the two coupling sections near the end of the strip-shaped oscillator is used as a near end, the two coupling sections extend from the near ends in a direction away from each other, the distance between the near ends and the reference ground is more than or equal to lambda/128 and less than or equal to lambda/6, the distance between the near ends is more than or equal to lambda/128 and less than or equal to lambda/2, and the strip-shaped oscillator can form directional radiation at the two ends based on corresponding feeding modes.
Description
Technical Field
The utility model relates to a microwave detection field especially relates to a directional microwave detection antenna.
Background
The microwave detection technology works based on the microwave doppler effect principle, and can detect the movement of a target space to judge whether a human body enters and exists in the target space, so that a moving object can be detected under the condition of not invading the privacy of the human body, and the microwave detection technology can be used as a human and an object, and an important pivot connected between the object and the human body is applied to behavior detection and existence detection, so that the microwave detection technology has wide application prospect. In particular, the respective microwave probe is fed by an excitation signal to emit a microwave beam corresponding to the frequency of said excitation signal into said target space, further forming a detection region in the target space, and receiving a reflected echo formed by the reflection of the microwave beam by the corresponding object in the detection region and transmitting an echo signal corresponding to the frequency of the reflected echo to a mixer detector unit, wherein the mix detection unit mixes the excitation signal and the echo signal to output a Doppler intermediate frequency signal corresponding to a frequency/phase difference between the excitation signal and the echo signal, wherein, based on the Doppler effect principle, when the object reflecting the microwave beam is in motion, the echo signal and the excitation signal have a certain frequency/phase difference, and the Doppler intermediate frequency signal presents corresponding amplitude fluctuation to feed back human body activity.
The existing microwave detector is mainly divided into a microwave detector with a cylindrical radiation source structure and a microwave detector with a flat radiation source structure according to the structure of a radiation source, wherein structurally, because the cylindrical radiation source of the microwave detector with the cylindrical radiation source structure is perpendicular to the reference ground, compared with the microwave detector with the flat radiation source structure which tends to be in a flat structure, the microwave detector with the cylindrical radiation source structure easily occupies a larger installation space in the actual installation, therefore, under the aesthetic trend of pursuit of small and simple appearance, the microwave detector with the flat radiation source structure is favored due to the advantages of small occupied space and relative stability, wherein the plane size of the microwave detector with the flat radiation source structure in the reference ground direction is directly limited by the area of the reference ground, however, the microwave detector with the flat radiation source structure has certain size requirement on the flat radiation source, so that the area of the reference ground has certain size requirement on the basis of meeting the structure that the area of the flat radiation source is larger than the area of the flat radiation source, and correspondingly, the plane size of the microwave detector of the flat radiation source structure in the direction of the reference ground is difficult to reduce relative to the plane size of the microwave detector of the columnar radiation source structure in the direction of the reference ground. That is, although the microwave detector of the flat-panel radiation source structure can occupy a smaller installation space in actual installation relative to the microwave detector of the cylindrical radiation source structure, the area of the reference ground of the microwave detector of the cylindrical radiation source structure is allowed to be smaller than that of the reference ground of the microwave detector of the flat-panel radiation source structure, and accordingly, when the installation scene of the microwave detector of the cylindrical radiation source structure in the direction of the cylindrical radiation source does not need to be considered, the microwave detector of the cylindrical radiation source structure can occupy a smaller installation space relative to the microwave detector of the flat-panel radiation source structure. Therefore, the microwave detector with the columnar radiation source structure still has wide application requirements.
Specifically, referring to fig. 1A to 1B of the drawings of the present disclosure, the structure principle of the microwave detector 10P of the conventional pillar-shaped radiation source structure and the radiation pattern corresponding to the structure principle are respectively illustrated, wherein the microwave detector 10P of the pillar-shaped radiation source structure comprises the pillar-shaped radiation source 11P and the reference ground 12P, wherein the reference ground 12P is provided with a radiation hole 121P, the pillar-shaped radiation source 11P extends from the feeding end 111P to vertically penetrate the reference ground 12P through the radiation hole 121P, and a radiation gap 1211P is formed between the radiation hole 121P and the reference ground 12P, wherein an end of the pillar-shaped radiation source 11P, which is far away from the feeding end 111P, and the reference ground 12P have an electrical length of one quarter wavelength or more, so that the microwave detector 10P of the pillar-shaped radiation source structure can have a corresponding resonant frequency and have a corresponding electrical length The selectivity of the reflected echo is suitable for microwave detection based on the doppler effect principle, such that when the cylindrical radiation source 11P is fed by the corresponding excitation signal at the feeding end 111P thereof, the cylindrical radiation source 11P can be coupled with the reference ground 12P to form a radiation space 100P from the radiation slit 1211P with the cylindrical radiation source 11P as a central axis, where the radiation space 100P is a coverage area of electromagnetic waves radiated by the microwave detector 10P of the cylindrical radiation source structure, and a current density at an end of the cylindrical radiation source 11P away from the feeding end 111P thereof is the largest under excitation of the corresponding excitation signal, then under a suitable area setting of the reference ground 12P, a front electromagnetic radiation range and a rear electromagnetic radiation range of the microwave detector 10P of the cylindrical radiation source structure with the reference ground 12P as a boundary tend to be consistent and do not have a directional radiation capability, and a detection dead zone is formed in the extending direction of the two end portions of the columnar radiation source 11P, a large backward lobe is formed by taking the reference ground 12P as a boundary corresponding to the radiation space 100P, and a concave detection dead zone is formed in the extending direction of the two end portions of the columnar radiation source 11P by taking the columnar radiation source 11P as a central axis.
Therefore, the microwave detector 10P with the cylindrical radiation source structure still has wide application requirements, but the microwave detector 10P with the cylindrical radiation source structure has a larger backward lobe with the reference ground 12P as a boundary, and has a concave detection dead zone with the cylindrical radiation source 11P as a central axis in the extending direction of the two end portions of the cylindrical radiation source 11P, so as to correspond to a situation that the detection region of the microwave detector 10P with the cylindrical radiation source structure cannot be matched with the target space, for example, a situation that the detection region is partially overlapped with the target space in a crossing manner, so as to be a state that the target space outside the detection region cannot be effectively detected, and/or a state that the detection region outside the target space has environmental interference, including motion interference, electromagnetic interference and self-excitation interference caused by electromagnetic shielding environment, the microwave detector 10P with the columnar radiation source structure has poor detection accuracy and/or poor anti-interference performance, that is, the microwave detector 10P with the columnar radiation source structure has poor detection stability in practical application and has limited adaptability to different application scenarios in practical application.
In addition, the direction perpendicular to the reference ground 12P is taken as the height direction of the microwave detector 10P of the columnar radiation source structure, and the columnar radiation source 11P has a higher height, so that certain requirements are required for the structural form of the corresponding microwave detection device of the microwave detector 10P provided with the columnar radiation source structure, which is not favorable for cost control and corresponding use and installation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a directional microwave detection antenna, wherein directional microwave detection antenna can produce directional radiation and be favorable to with corresponding target detection space phase-match, promptly directional microwave detection antenna can launch the microwave in corresponding target detection space orientation, and can carry out microwave detection in corresponding target detection space orientation.
An object of the utility model is to provide a directional microwave detection antenna, wherein directional microwave detection antenna can produce directional radiation and have obvious resonance frequency point, correspond be favorable to with corresponding target space phase-match with have to the selectivity of the reflection echo of receiving and have the best launch performance at resonance frequency point, therefore be applicable to the microwave detection based on the doppler effect principle.
An object of the present invention is to provide a directional microwave detecting antenna, wherein in view of the structural foundation of the microwave detector of the columnar radiation source structure, the columnar radiation source is bent to approach the end far away from the feed end thereof to the deformation exploration of the reference ground within the distance range of λ/128 or more and λ/6 or less, so as to obtain the deformation structure of the microwave detector of the columnar radiation source structure, which can form directional radiation but cannot generate obvious resonance frequency points, wherein λ is a wavelength parameter corresponding to the frequency of a corresponding excitation signal, the directional microwave detecting antenna based on the further improvement of the deformation structure can retain the advantages of the microwave detector of the columnar radiation source structure in structural form, and can form directional radiation and generate obvious resonance frequency points at the same time, thereby avoiding the formation of detecting dead zones in the directional radiation direction, and thus is suitable for microwave detection based on the doppler effect principle.
An object of the utility model is to provide a directional microwave detection antenna, wherein directional microwave detection antenna can form directional radiation, then under the area condition on same reference ground, directional microwave detection antenna gain in directional radiation direction for the microwave detector of column radiation source structure can be promoted by the multiple, therefore is favorable to improving directional microwave detection antenna's detection distance and detectivity.
An object of the utility model is to provide a directional microwave detection antenna, wherein directional microwave detection antenna includes a bar oscillator and a reference ground, wherein through right the inflection of bar oscillator forms the bar oscillator has and is close to at more than or equal to lambda 128 and less than or equal to lambda 6's distance scope refer to the state on ground with refer to ground looks both near-ends that are set up with looks interval ground to keep can form directional radiation when the microwave detector of column radiation source structure is in the advantage of structural morphology, and be superior to in height the column radiation source and have the contrast the microwave detector of column radiation source structure is in the advantage of high structural morphology, has reduced directional microwave detection antenna's occupation space does benefit to corresponding use installation.
An object of the utility model is to provide a directional microwave detection antenna, wherein the bar oscillator has 1/4 and 3/2 wavelength electric length more than or equal to, so in order to be favorable to being based on corresponding feed structure in two form between the near-end and tend to the antiphase phase difference, and then when the bar oscillator is turned back with its both ends in the state of the distance within range of more than or equal to lambda 128 and less than or equal to lambda 2, make two mutual coupling's energy tends to the maximize and improves between the near-end directional microwave detection antenna's gain.
An object of the present invention is to provide a directional microwave detecting antenna, wherein the bar-shaped oscillator extends from both ends thereof on the same side of the reference ground, the bar-shaped oscillator has two coupling sections, wherein one end of the two coupling sections near the ends of the bar-shaped oscillator is the near end, wherein the two coupling sections extend from the near end thereof in a direction away from each other, wherein a distance between the near end and the reference ground is greater than or equal to λ/128 and less than or equal to λ/6, wherein a distance between the near ends of the two coupling sections is greater than or equal to λ/128 and less than or equal to λ/2, so that in a state where the two poles of an excitation signal or the excitation signal having a phase difference are respectively connected to both ends of the bar-shaped oscillator for feeding, the near ends of the two coupling sections can form a phase difference for mutual coupling, and the gain of the directional microwave detection antenna is improved by enabling the energy mutually coupled between the two near ends to tend to be maximized, and obvious resonance frequency points are generated in a state that the two near ends are close to the reference ground within a distance range of more than or equal to lambda/128 and less than or equal to lambda/6.
An object of the utility model is to provide a directional microwave detection antenna, wherein two the coupling section is from it the near-end order is being kept away from each other in the direction of keeping away from, is being buckled and is being kept away from the direction of reference ground to and be buckled and extend in the direction in opposite directions, correspond the name two sections of coupling section that extend in the direction of keeping away from each other are near ground coupling section, wherein near ground coupling section is on a parallel with reference ground, in order to reduce directional microwave detection antenna's radiation loss, guarantee directional microwave detection antenna's performance.
An object of the utility model is to provide a directional microwave detection antenna, wherein the bar oscillator is fixed in corresponding circuit substrate with its both ends, corresponds the bar oscillator is in its both ends and corresponding excitation source electric coupling and insert excitation signal's state, form the bar oscillator in its both ends fed and with refer to the state that ground looks interval ground was set up.
An object of the utility model is to provide a directional microwave detection antenna, wherein through right the branch and node load design of bar oscillator, directional microwave detection antenna's resonance frequency point can be designed with corresponding work frequency point phase-match, thereby be favorable to the guarantee directional microwave detection antenna's interference killing feature, simple simultaneously is favorable to the guarantee uniformity and the reliability of directional microwave detection antenna in batch production.
An object of the utility model is to provide a directional microwave detection antenna, wherein the bar oscillator is with the state that the rectangular form of column was set up, wherein the bar oscillator be in from its both ends reference ground with one side in order to keep away from the direction on reference ground extends and connect in the near-end, wherein the bar oscillator be in from its both ends reference ground with one side in order to keep away from two sections of the direction extension on reference ground are added thick design, in order to be based on it is right to add thick design tuning of bar oscillator directional microwave detection antenna's resonance frequency point to with corresponding work frequency point assorted in, improve the physical strength of bar oscillator and improve directional microwave detection antenna's structural stability.
An object of the utility model is to provide a directional microwave detection antenna, wherein directional microwave detection antenna's resonance frequency point is in the bar oscillator with under the restriction of the relation between the minor matters load, by the bar oscillator with minor matters load wavelength electric length confirms the bar oscillator with minor matters load wavelength electric length and the state that the relation between each other remains unchanged, formed based on batch production error and daily use the slight deformation of bar oscillator is difficult to influence directional microwave detection antenna's operating parameter, corresponding directional microwave detection antenna has good uniformity and stability.
According to an aspect of the utility model provides a directional microwave detection antenna, directional microwave detection antenna includes:
a reference ground; and
a bar-shaped vibrator having a wavelength electrical length equal to or greater than 1/4 and equal to or less than 3/2, wherein the bar-shaped vibrator extends from both ends thereof on the same side of the reference ground, the bar-shaped vibrator has two coupling sections, wherein one ends of the two coupling sections near the ends of the bar-shaped vibrator are proximal ends, wherein the two coupling sections extend from the proximal ends thereof in directions away from each other, wherein in a state where the bar-shaped vibrator is fed with excitation signals being fed to both ends thereof with two poles of the excitation signals or with excitation signals having a phase difference, the two proximal ends can be coupled to each other with a phase difference, where λ is a wavelength parameter corresponding to the frequency of the excitation signals.
In an embodiment of the present invention, a distance between the near end and the reference ground is greater than or equal to λ/128 and less than or equal to λ/6, and a distance between the two near ends is greater than or equal to λ/128 and less than or equal to λ/2.
In an embodiment of the invention, two of the coupling sections are sequentially bent from the proximal ends thereof in a direction away from each other, in a direction away from the reference ground, and in opposite directions.
In an embodiment of the present invention, the directional microwave detecting antenna further includes a circuit board, wherein the reference ground is supported on the circuit board, and both ends of the bar-shaped vibrator are fixed on the circuit board.
In an embodiment of the present invention, both ends of the bar-shaped vibrator are connected to a feeding structure designed in a pin shape and fixed to the circuit board.
In an embodiment of the present invention, both ends of the bar-shaped vibrator are connected to a feeding structure designed in a mounted form and fixed to the circuit board.
In an embodiment of the present invention, the strip-shaped oscillator is disposed in a microstrip line form and supported on an antenna substrate.
In an embodiment of the present invention, the directional microwave detecting antenna further includes another strip-shaped oscillator, two of the strip-shaped oscillators are supported on both sides of the antenna substrate in a mirror image manner in a microstrip line form and electrically connected to each other through a metalized via hole.
In an embodiment of the present invention, the strip-shaped oscillator is designed on an antenna substrate in a combination of a microstrip line and a metallized hole.
In an embodiment of the present invention, the directional microwave detecting antenna further includes a stub load, wherein the stub load is electrically connected to the bar-shaped vibrator, so that the strip-shaped vibrator is loaded between the two ends of the bar-shaped vibrator.
Further objects and advantages of the invention will become apparent from a consideration of the ensuing description and drawings.
Drawings
Fig. 1A is a schematic structural diagram of a conventional microwave detector with a columnar radiation source structure.
Fig. 1B is a radiation pattern of the microwave detector of the columnar radiation source structure.
Fig. 2A is a schematic diagram of a modified exploration structure of the microwave detector based on the columnar radiation source structure.
Fig. 2B is a radiation pattern of the above-described modified probe structure.
Fig. 3A is a structural schematic diagram of another variant exploration of the microwave detector based on the columnar radiation source structure.
Fig. 3B is a radiation pattern of the above-described modified probe structure.
Fig. 4A is a schematic structural diagram of an oriented microwave detecting antenna according to an embodiment of the present invention.
Fig. 4B is a radiation pattern of the directional microwave detecting antenna according to the above embodiment of the present invention.
Fig. 4C is a S11 curve of the directional microwave detecting antenna according to the above embodiment of the present invention.
Fig. 5A is a schematic view of a tuning structure of the directional microwave detecting antenna according to the above embodiment of the present invention.
Fig. 5B is a radiation pattern of the tuning structure of the directional microwave detecting antenna according to the embodiment of the present invention.
Fig. 5C is a S11 curve of the tuning structure of the directional microwave detecting antenna according to the above embodiment of the present invention.
Fig. 6A is a schematic view of another tuning structure of the directional microwave detecting antenna according to the above embodiment of the present invention.
Fig. 6B is a radiation pattern of the tuning structure of the directional microwave detecting antenna according to the embodiment of the present invention.
Fig. 6C is a S11 curve of the tuning structure of the directional microwave detecting antenna according to the above embodiment of the present invention.
Fig. 7A is a schematic view of another tuning structure of the directional microwave detecting antenna according to the above embodiment of the present invention.
Fig. 7B is a radiation pattern of the tuning structure of the directional microwave detecting antenna according to the above embodiment of the present invention.
Fig. 7C is a S11 curve of the tuning structure of the directional microwave detecting antenna according to the above embodiment of the present invention.
Fig. 8A is a schematic view of another tuning structure of the directional microwave detecting antenna according to the above embodiment of the present invention.
Fig. 8B is a radiation pattern of the tuning structure of the directional microwave detecting antenna according to the embodiment of the present invention.
Fig. 8C is a S11 curve of the tuning structure of the directional microwave detecting antenna according to the above embodiment of the present invention.
Fig. 9A is a schematic view of another tuning structure of the directional microwave detecting antenna according to the above embodiment of the present invention.
Fig. 9B is a schematic structural diagram of a modified structure of the tuning structure of the directional microwave detecting antenna according to the embodiment of the present invention.
Fig. 10 is a schematic view of another tuning structure of the directional microwave detecting antenna according to the above embodiment of the present invention.
Fig. 11A is a schematic structural diagram of the directional microwave detecting antenna according to a modified embodiment of the above-mentioned embodiments of the present invention.
Fig. 11B is a schematic structural diagram of the directional microwave detecting antenna according to another modified embodiment of the above-mentioned embodiment of the present invention.
Fig. 12A is a schematic structural diagram of the directional microwave detecting antenna according to another modified embodiment of the above-mentioned embodiment of the present invention.
Fig. 12B is a schematic perspective view of the directional microwave detecting antenna according to the above modified embodiment of the present invention.
Fig. 13A is a schematic structural diagram of the directional microwave detecting antenna according to another modified embodiment of the above-mentioned embodiment of the present invention.
Fig. 13B is a radiation pattern of the directional microwave detecting antenna according to the above modified embodiment of the present invention.
Fig. 13C is a S11 curve of the directional microwave detecting antenna according to the above 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; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. 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. 2A to 3B of the drawings accompanying the present application, based on the structure of the microwave detector 10A with a columnar radiation source structure, based on the deformation exploration of bending the columnar radiation source 11A of the microwave detector 10A with a columnar radiation source structure to make one end far away from the feeding end 111A of the columnar radiation source structure close to the reference ground 12A within a distance range of λ/128 or more and λ/6 or less, the deformation exploration structure and the corresponding radiation pattern are illustrated, in which the one end far away from the feeding end 111A of the columnar radiation source structure is kept at λ/6 and λ/128 distances from the reference ground 12A, where λ is a wavelength parameter corresponding to the frequency of the corresponding excitation signal.
Compared with fig. 1B, fig. 2B and fig. 3B, as the end of the columnar radiation source 11A far from the feeding end 111A approaches the reference ground 12A, a backward lobe in a direction away from the columnar radiation source 11A in the corresponding radiation space 100A is in a decreasing state bounded by the reference ground 12A, and directional radiation is formed in a direction toward the columnar radiation source 11A (in the figure, in the Z-axis direction) correspondingly bounded by the reference ground 12A, wherein the formation of the directional radiation is accompanied by an increase in gain in the directional radiation direction. It is worth mentioning that in the practical application of microwave detection, different from the omnidirectional radiation requirement of the communication antenna, the interference of the actual detection area corresponding to the backward lobe to the forward target detection space can be avoided substantially only on the basis of forming directional radiation by the corresponding microwave detector, thereby ensuring the reliability of microwave detection.
In view of the above mentioned deformation exploration, the present invention provides a directional microwave detecting antenna based on the above further improvement of the above deformation structure, so as to retain the advantages of the microwave detector 10A of the columnar radiation source structure in structural form, and simultaneously, to form directional radiation, and to avoid forming a detection dead zone in the directional radiation direction, thereby being suitable for microwave detection based on the doppler effect principle.
Specifically, referring to fig. 4A of the drawings accompanying the present application, a directional microwave detecting antenna 10 according to an embodiment of the present invention is illustrated, wherein the directional microwave detecting antenna 10 includes a bar-shaped vibrator 11 and a reference ground 12, wherein the bar-shaped vibrator 11 is formed by folding back the bar-shaped vibrator 11 to have two proximal ends 1111 spaced from the reference ground 12 in a state of being close to the reference ground 12 within a distance range of λ/128 or more and λ/6 or less so as to form directional radiation while maintaining advantages of the microwave detector 10A of the columnar radiation source structure in terms of structural configuration, and to have advantages of the microwave detector 10A of the columnar radiation source structure in terms of height superior to the columnar radiation source and in terms of height structural configuration, so as to reduce an occupied space of the directional microwave detecting antenna 10, the corresponding use and installation are facilitated.
In particular, the strip-shaped element 11 has an electrical length equal to or greater than 1/4 and equal to or less than 3/2, so as to facilitate the formation of a phase difference tending to reverse phase between the two proximal ends 1111 based on the corresponding feeding structure, and thus, when the strip-shaped element 11 is folded back in a state where both ends thereof are within a distance range equal to or greater than λ/128 and equal to or less than λ/2, the energy coupled to each other between the two proximal ends 1111 tends to be maximized, thereby increasing the gain of the directional microwave detection antenna 10.
Specifically, the strip-shaped transducer 11 extends from both ends thereof on the same side of the reference ground 12, the strip-shaped transducer 11 has two coupling sections, wherein one end of the two coupling sections near the ends of the strip-shaped transducer 11 is the near end 1111, the two coupling sections extend from the near end 1111 in a direction away from each other, the distance between the near end 1111 and the reference ground 12 is λ/128 or more and λ/6 or less, the distance between the near ends 1111 of the two coupling sections is λ/128 or more and λ/2 or less, and thus in a state where the strip-shaped transducer 11 is fed with two poles of an excitation signal or with an excitation signal having a phase difference at both ends thereof, the near ends 1111 of the two coupling sections 111 can be coupled to each other with a phase difference, thereby increasing the gain of the directional microwave detecting antenna 10 by maximizing the energy coupled between the near ends 1111 of the two near-ground coupling sections 111, and generating a significant resonant frequency point when the two near-ground coupling sections 111 are close to the reference ground 12 in a distance range of λ/128 or more and λ/6 or less.
Particularly in this embodiment of the present invention, wherein the bar-shaped vibrator 11 is extended from both ends thereof symmetrically on the same side of the reference ground 12 in a direction away from the reference ground 12 and connected to the near end 1111, wherein the two coupling segments extend from the proximal end 1111 thereof in a direction away from each other, are bent in a direction away from the reference ground 12, and are bent in a direction toward each other, two segments of the two coupling segments extending in a direction away from each other are named correspondingly as two ground-proximal coupling segments 111, a far-ground coupling section 113 of the strip-shaped oscillator 11 extending oppositely, and two connecting coupling sections 112 of the strip-shaped oscillator 11 respectively connecting the far-ground coupling section 113 and the two near-ground coupling sections 111, and two sections of the bar-shaped vibrator 11 extending from both ends thereof in a direction away from the reference ground 12 are named correspondingly as support connection sections 114 of the bar-shaped vibrator 11.
In particular, the near ends 1111 of the two near ground coupling sections 111 can be coupled to each other and have relatively high coupling energy, and then when the strip-shaped transducer 11 is disposed at a distance from the reference ground 12 in a state that the two near ground coupling sections 111 are close to the reference ground 12 within a distance range of λ/128 or more and λ/6 or less, the energy directly coupled between the two end portions of the two near-ground coupling sections 111 close to each other and the reference ground 12 can be reduced, thereby generating a significant resonant frequency point based on the coupling between the two close ends of the two near-ground coupling sections 111 while forming the directional radiation of the directional microwave probe antenna 10, the correspondence is advantageously matched to the respective target space and has selectivity to the received reflected echoes, and is therefore suitable for microwave detection based on the doppler effect principle.
It is worth mentioning that, the bar-shaped vibrator 11 extends from both ends thereof symmetrically on the same side of the reference ground 12 in a direction away from the reference ground 12, and wherein two of said coupling sections extend sequentially from said proximal end 1111 thereof in directions away from each other, are bent in directions away from said reference ground 12, and bent to extend in opposite directions to form a state where the distance between the two ground proximity coupling sections 111 of the strip-shaped transducer 11 and the reference ground 12 is equal to or greater than λ/128 and equal to or less than λ/6, it is thus possible to form the structural configuration of the directional microwave detection antenna 10 that is greatly reduced in height relative to the microwave detector 10A of the columnar radiation source structure in the height direction perpendicular to the reference ground 12, thus facilitating further miniaturization design of the directional microwave detection antenna 10.
Specifically, the directional microwave detecting antenna 10 includes a circuit substrate 14, wherein the reference ground 12 is carried on the circuit substrate 14, wherein both ends of the strip-shaped oscillator 11 are fixed to the circuit substrate 14, so as to be fed in a state where the strip-shaped oscillator 11 is electrically coupled to the corresponding excitation source at both ends thereof to receive the excitation signal, and form a physical support for itself through the fixed relationship between both ends thereof and the circuit substrate 14.
Referring to fig. 4B and 4C of the drawings of the present invention, corresponding to fig. 1B, it can be seen that the backward (backward direction of Z axis in the figure) lobe of the radiation space 100 of the directional microwave detecting antenna 10 according to this embodiment of the present invention, bounded by the reference ground 12, is reduced, and the radiation gain of the radiation space 100 bounded by the reference ground 12 in the direction toward the bar-shaped vibrator 11 (Z axis direction in the figure) is significantly improved to exhibit significant directional radiation, bounded by the reference ground 12, in the direction toward the bar-shaped vibrator 11, and has a radiation gain as high as 7.2dB specifically in the directional radiation direction, so that the directional microwave detecting antenna 10 is excellent in performance and suitable for microwave detection, and corresponding to fig. 4C, the S11 curve of the directional microwave detecting antenna 10 exhibits a significant narrow valley near 5.8GHz, in other words, the directional microwave detection antenna 10 of this embodiment of the present invention exhibits a pronounced resonant characteristic allowing tuning based on the corresponding tuning structure.
For example, referring to fig. 5A to 10 of the drawings of the present invention, based on the structure of the directional microwave detecting antenna 10 illustrated in fig. 4A, the tuning structures of the directional microwave detecting antenna 10 according to the different embodiments of the present invention are illustrated, and it is worth mentioning that the structure of the bar-shaped vibrator 11 is defined in the foregoing description of "the distance between the two proximal ends 1111 is λ/128 or more and λ/2 or less" and "the bar-shaped vibrator 11 has an electrical length of 1/4 or more and 3/2 or less" and "the distance between the proximal end 1111 and the reference ground 12 is λ/128 or more and λ/6 or less", the length of the sections of the strip-shaped element 11 is allowed to be adjusted to form a tuning of the directional microwave detection antenna 10.
With specific reference to fig. 5A of the drawings of the present disclosure, based on the tuning structure of the directional microwave detecting antenna 10 illustrated in fig. 4A, specifically corresponding to the structure of the directional microwave detecting antenna 10 illustrated in fig. 4A, in this structure of the present invention, the distance between the two near ends 1111 is greater than or equal to λ/128 and less than or equal to λ/2 "is adjusted by adjusting the distance between the two supporting connection sections 114 of the bar-shaped vibrator 11 to adjust the form of the bar-shaped vibrator 11, specifically in this tuning structure, the distance between the two supporting connection sections 114 of the bar-shaped vibrator 11 is increased relative to the directional microwave detecting antenna 10 illustrated in fig. 4A.
Referring to fig. 5B and 5C, in comparison with fig. 4B and 4C, in the state where the distance between the two support connecting sections 114 of the strip-shaped oscillator 11 is increased, the directional microwave detection antenna 10 has a significantly improved radiation gain in the directional radiation direction, specifically, a radiation gain close to 8dB in the directional radiation direction, corresponding to the directional microwave detection antenna 10 illustrated in fig. 4A, and the resonant frequency point of the directional microwave detection antenna 10 is adjusted, that is, the state where the distance between the two support connecting sections 114 of the strip-shaped oscillator 11 is increased has an advantageous effect of improving the radiation gain of the directional microwave detection antenna 10 in the directional radiation direction.
With further reference to fig. 6A to 6C of the drawings accompanying the present invention, another tuning structure of the directional microwave detecting antenna 10 illustrated in fig. 4A is illustrated, wherein in the tuning structure of the present invention, a form adjustment of the strip-shaped vibrator 11 is formed based on adjusting the length of each section of the strip-shaped vibrator 11 in a state where "the strip-shaped vibrator 11 has a wavelength electrical length equal to or greater than 1/4 and equal to or less than 3/2" and "the distance between the two proximal ends 1111 and the reference ground 12 is equal to or greater than λ/128 and equal to or less than λ/6", specifically in the tuning structure, the length of the two support connecting sections 114 of the strip-shaped vibrator 11 is increased with respect to the directional microwave detecting antenna 10 illustrated in fig. 4A, and the length of the two proximal coupling sections 111 and the distal coupling section 113 corresponding to the strip-shaped vibrator 11 is correspondingly shortened, the distance between the two near-ground coupling sections 111 corresponding to the strip-shaped elements 11 and the reference ground 12 is increased relative to the directional microwave detection antenna 10 illustrated in fig. 4A.
Based on this tuning structure, refer to fig. 6B and 6C, this tuning structure the S11 curve of directional microwave detecting antenna 10 presents obvious narrow valley near 5.8GHz, can form promptly the matching of the resonant frequency point of directional microwave detecting antenna 10 and the ISM operating band of 5.8GHz, and directional microwave detecting antenna 10 has the radiation gain that is greater than 6dB in directional radiation direction, for microwave detector 10A of column radiation source structure promotes for the multiple.
Referring further to fig. 7A to 7C of the drawings of the present application, the tuning example is performed at the ISM operating frequency band of 5.8GHz, based on that another tuning structure of the directional microwave detecting antenna 10 illustrated in fig. 4A is illustrated, specifically, in this tuning structure of the present invention, the lengths of the two supporting connecting sections 114 of the bar-shaped vibrator 11 are shortened relative to the directional microwave detecting antenna 10 illustrated in fig. 4A, the lengths of the two near-ground coupling sections 111 and the far-ground coupling section 113 corresponding to the bar-shaped vibrator 11 are correspondingly increased, and the distance between the two near-ground coupling sections 111 and the reference ground 12 corresponding to the bar-shaped vibrator 11 is shortened relative to the directional microwave detecting antenna 10 illustrated in fig. 4A.
Referring to fig. 7B and 7C, the directional microwave detecting antenna 10 designed based on the above structure has a good directional radiation characteristic due to the fact that the backward radiation of the directional microwave detecting antenna 10 bounded by the reference ground 12 is significantly attenuated, and has a radiation gain of 7.5dB in the directional radiation direction, and meanwhile, the directional microwave detecting antenna 10 has a resonant frequency point with low loss.
With further reference to fig. 8A to 8C of the drawings attached to the present disclosure, through further adjusting the length of the supporting connection section 114 of the two bar-shaped oscillators 11, another tuning structure of the directional microwave detecting antenna 10 is illustrated based on that illustrated in fig. 4A, specifically, in this tuning structure of the directional microwave detecting antenna 10 illustrated in fig. 8A, the length of the supporting connection section 114 of the two bar-shaped oscillators 11 is further shortened to correspondingly form the form adjustment of the bar-shaped oscillators 11.
With specific reference to fig. 8B and 8C of the drawings attached to the specification of the present invention, the directional microwave detecting antenna 10 based on the above structure is significantly weakened by the backward radiation with reference to the ground 12 as a boundary to have a good directional radiation characteristic, and has a radiation gain as high as 7.6dB in the directional radiation direction, and meanwhile, the directional microwave detecting antenna 10 has a resonant frequency point with a low loss (lower than-23 dB), so that the performance is excellent, and the directional microwave detecting antenna is suitable for microwave detection and has a good anti-interference performance.
With further reference to fig. 9A of the drawings accompanying the present application, wherein another tuning structure of the directional microwave detecting antenna 10 illustrated in fig. 4A is illustrated by further tuning the supporting connection section 114 and adjusting the lengths of the sections of the bar-shaped vibrator 11, wherein in the tuning structure of the present application, the bar-shaped vibrator 11 is disposed in a columnar strip shape, two supporting connection sections 114 of the bar-shaped vibrator 11 are designed to be thickened so as to tune the resonant frequency point of the directional microwave detecting antenna 10 to match the corresponding operating frequency point based on the thickened design of the supporting connection sections 114, thereby improving the physical strength of the bar-shaped vibrator 11 and improving the structural stability of the directional microwave detecting antenna 10, and simultaneously the lengths of two connecting coupling sections 112 of the bar-shaped vibrator 11 are increased relative to the directional microwave detecting antenna 10 illustrated in fig. 8A, the lengths of the two near ground coupling sections 111 and the far ground coupling section 113 corresponding to the strip-shaped transducer 11 are correspondingly shortened.
It is worth mentioning that, corresponding to fig. 9B, based on the modified design of the feeding structure of the directional microwave detecting antenna 10 illustrated in fig. 9A, another tuning structure of the directional microwave detecting antenna 10 is illustrated, and specifically, two end portions of the bar-shaped element 11 different from the feeding structure of the directional microwave detecting antenna 10 illustrated in fig. 9A are connected to the feeding structure designed in the form of a pin so as to be able to access the excitation signal and be fixed to the circuit substrate 14 via the feeding structure designed in the form of a pin, and in this tuning structure illustrated in fig. 9B, two end portions of the bar-shaped element 11 are connected to the feeding structure designed in the form of mounting so as to be able to access the excitation signal via the feeding structure designed in the form of mounting and are fixed to the circuit substrate 14, in other words, different from the tuning structure illustrated in fig. 9A, the directional microwave detecting antenna 10 has the feeding structure designed in the form of mounting so as to be fixed to the circuit substrate 14 Structure, in this tuning structure illustrated in fig. 9B, the directional microwave detecting antenna 10 has a feeding structure designed in a form of mounting.
That is to say, based on the structural description of "the distance between the two near ends 1111 is greater than or equal to λ/128 and less than or equal to λ/2" and "the strip-shaped element 11 has a wavelength electrical length greater than or equal to 1/4 and less than or equal to 3/2" and "the distance between the near end 1111 and the reference ground 12 is greater than or equal to λ/128 and less than or equal to λ/6", the design of the feeding structure of the directional microwave detecting antenna 10 does not limit the present invention.
Further refer to the utility model discloses a figure 10 of the description drawings, it is based on that figure 9A indicates another harmonious structure of directional microwave detection antenna 10 is illustrated, wherein is in this harmonious structure of the utility model, directional microwave detection antenna 10 is further provided with at least one minor matters load 15, wherein minor matters load 15 by load in bar oscillator 11, with based on minor matters load 15 wavelength electric length set up with in the load position debugging of bar oscillator 11, directional microwave detection antenna 10's resonance frequency point can be debugged in order to match with corresponding work frequency point, correspond the quantity, form, wavelength electric length and the load position of minor matters load 15 are various and do not constitute the restriction of the utility model.
It is worth mentioning that the tuning means of the directional microwave detecting antenna 10 are various and can be combined with each other, wherein the tuning means of the directional microwave detecting antenna 10 includes but is not limited to tuning the electrical length of the strip-shaped element 11, and tuning the number, shape, electrical length of the strip-shaped element 15, and load position based on the arrangement of the stub load 15, so that the strip-shaped element 11 has various shapes and can be adapted to different shape requirements in the states of "the distance between the two proximal ends 1111 is greater than or equal to λ/128 and less than or equal to λ/2" and "the strip-shaped element 11 has the electrical length of the wavelength greater than or equal to 1/4 and less than or equal to 3/2" and "the distance between the proximal end 1111 and the reference ground 12 is greater than or equal to λ/128 and less than or equal to λ/6", and allows the matching of the resonant frequency point and the working frequency point of the directional microwave detection antenna 10 to be formed based on corresponding tuning means, including but not limited to the working frequency points of ISM frequency bands of 5.8GHz, 10.525GHz, 24.15GHz, 60-62GHz and 77-79 GHz.
In detail, in the tuning structure of the present invention, the stub load 15 is designed to have a block shape, so that a thickened design is formed on the physical shape of the bar-shaped oscillator 11 at a position where the bar-shaped oscillator 11 is loaded with the stub load 15.
In particular, in some tuning structures of the present invention, the bar-shaped oscillator 11 is designed in a sheet-shaped strip shape and is equivalent to a thickened design of the bar-shaped oscillator 11 formed by loading the branch load 15 on the bar-shaped oscillator 11 in a direction perpendicular to the bar-shaped oscillator 11.
It is worth mentioning that, in the structures of the directional microwave detecting antenna 10 of the present invention, in view of the influence of the minor matters load 15 on the electrical length of the strip-shaped vibrator 11, based on the conversion of the electrical length of the strip-shaped vibrator 11 on the physical length of the strip-shaped vibrator 11, an error of 20% is allowed, corresponding to the state that the strip-shaped vibrator 11 is in the dielectric space of air, the strip-shaped vibrator 11 has a physical length greater than or equal to 0.2 λ and less than or equal to 1.8 λ, and in the state that the strip-shaped vibrator 11 is configured to be carried on the corresponding circuit substrate in a microstrip line form, such as the strip-shaped vibrator 11 carried on the same side of the corresponding circuit substrate in a microstrip line form, or based on this, the strip-shaped vibrators 11 in two microstrip line forms arranged on two sides of the corresponding circuit substrate in mirror images are electrically connected by a metalized via hole, under the limitation of the wavelength electrical length of the strip-shaped oscillator 11, the physical length of the strip-shaped oscillator 11 can be reduced based on the increase of the dielectric constant of the medium space where the strip-shaped oscillator 11 is located, so that the miniaturization design of the directional microwave detection antenna 10 is facilitated.
Specifically, referring to fig. 11A and 11B of the drawings of the specification of the present invention, two deformation structures of the directional microwave detecting antenna 10 are illustrated based on fig. 9A, wherein in the two deformation embodiments of the present invention, the strip-shaped oscillator 11 is disposed to be supported on another circuit substrate in a microstrip line form, and the circuit substrate is named as the antenna substrate 16 by distinction, wherein the strip-shaped oscillator 11 is disposed to be supported on the antenna substrate 16 in a microstrip line form, so as to form a state where the paired strip-shaped oscillators 11 are disposed at intervals with reference to the ground 12 based on the fixation of the antenna substrate 16 on the circuit substrate 14.
In particular, corresponding to fig. 11B, based on that fig. 11A illustrates directional microwave detecting antenna 10, in this modified embodiment of the present invention, the number of the strip-shaped oscillators 11 is two, wherein two of the strip-shaped oscillators 11 are supported on both sides of the antenna substrate 16 in a mirror image manner in a microstrip line form, and are electrically connected by a metalized via hole, so as to form one strip-shaped oscillator 11 embedded in the antenna substrate 16 in an equivalent manner, thereby reducing the physical length of the strip-shaped oscillator 11 and facilitating the miniaturized design of the directional microwave detecting antenna 10 based on the increase of the dielectric constant of the dielectric space where the strip-shaped oscillator 11 is located under the limitation of the electrical length of the wavelength of the strip-shaped oscillator 11.
With further reference to fig. 12A and 12B of the drawings of the present specification, a further modified structure of the directional microwave detecting antenna 10 is illustrated, wherein corresponding to fig. 12A, the structural principle of the directional microwave detecting antenna 10 is illustrated, wherein the strip-shaped vibrator 11 is designed in a combination form of a microstrip line and a metalized via hole, specifically, wherein the far-ground coupling section 113 and the near-ground coupling section 111 of the strip-shaped vibrator 11 are respectively carried on both sides of the antenna substrate 16 in a microstrip line form, and the connection coupling section 112 is provided in a metalized via hole form to be connected between the far-ground coupling section 113 and the near-ground coupling section through the antenna substrate 16.
Specifically, referring to fig. 12B, the antenna substrate 16 and the circuit substrate 14 are designed in a laminated circuit board form, specifically, the antenna substrate 16 and the circuit substrate 14 are fixed on two sides of a cured sheet 17 at an interval in a state that one side of the near ground coupling section 111 carrying the strip-shaped element 11 faces the circuit substrate 14 to form the far ground coupling section 113, the antenna substrate 16, the near ground coupling section 111, the cured sheet 17 and the circuit substrate 14 are sequentially laminated, and on the basis of this structure, the connection coupling section 112 of the strip-shaped element 11 is provided in a metallized hole form penetrating through the antenna substrate 16 to be a metallized hole provided in the laminated circuit board form.
Further, the support connection segment 114 of the strip-shaped vibrator 11 is disposed in a form of a metalized hole penetrating through the circuit substrate 14 and electrically connected to the near ground connection segment 111, wherein the reference ground 12 is carried on the circuit substrate 14 and forms a structural state in which the far ground coupling segment 113, the antenna substrate 16, the near ground coupling segment 111, the curing sheet 17, the circuit substrate 14 and the reference ground 12 are sequentially stacked. Based on this, in a structural state where the distance between the two ground proximity coupling sections 111 of the strip-shaped element 11 and the reference ground 12 is equal to or greater than λ/128 and equal to or less than λ/6 regardless of the thickness of the cured sheet 17, the antenna substrate 16 has a thickness equal to or less than λ/6.
It should be noted that, in some embodiments of the present invention, in a state where the antenna substrate 16 and the circuit substrate 14 are designed in a laminated circuit board form, the lamination sequence between the near ground coupling section 111 and the curing sheet 17 allows for interchange, and the antenna substrate 16, the curing sheet 17, the near ground coupling section 111, the reference ground 12, and the far ground coupling section 113 are supported on the antenna substrate 16 and form the far ground coupling section 113, corresponding to the near ground coupling section 111 supported on the circuit substrate 14, i.e. the near ground coupling section 111 and the reference ground 12 are supported on two sides of the circuit substrate 14, respectively, and the present invention is not limited thereto.
Particularly, in these structures of directional microwave detecting antenna 10, by directional microwave detecting antenna 10's resonance frequency point is in bar oscillator 11 with under the restriction of the fixed relation between the minor matters load 15, by bar oscillator 11 with the minor matters load 15 wavelength electric length confirms bar oscillator 11 with minor matters load 15 wavelength electric length and the mutual relation is maintained unchangeable state, and what formed based on batch production error and daily use slight deformation of bar oscillator 11 is difficult to influence directional microwave detecting antenna 10's operating parameter, and it is corresponding directional microwave detecting antenna 10 has good uniformity and stability.
It should be noted that the number and arrangement of the strip-shaped vibrators 11 do not limit the present invention, in the structural states of "the distance between the two proximal ends 1111 is equal to or greater than λ/128 and equal to or less than λ/2", and "the strip-shaped vibrator 11 has an electrical length equal to or greater than 1/4 and equal to or less than 3/2, and" the distance between the proximal ends 1111 and the reference ground 12 is equal to or greater than λ/128 and equal to or less than λ/6 ".
In particular, under the limitation of the structural conditions "the distance between the two proximal ends 1111 is greater than or equal to λ/128 and less than or equal to λ/2" and "the bar-shaped vibrator 11 has a wavelength electrical length greater than or equal to 1/4 and less than or equal to 3/2" and "the distance between the proximal end 1111 and the reference ground 12 is greater than or equal to λ/128 and less than or equal to λ/6", in some variant embodiments of the present invention, further bending of the bar-shaped vibrator 11 is allowed to form tuning of the directional microwave detection antenna 10, specifically referring to fig. 13A of the drawings of the specification of the present invention, the bar-shaped vibrator 11 is shown in fig. 4A in which the two coupling sections extend in the directions away from each other from the proximal end 1111 in sequence, are bent in the directions away from the reference ground 12, and are bent in the structures extending in the opposite directions, further bent in a direction away from the reference ground 12, in a direction away from each other, in a direction away from the reference ground 12, and in a direction opposite thereto, and sequentially bent in the manner of the strip-shaped vibrator 11, to form a miniaturized design of the directional microwave detecting antenna 10.
Referring to fig. 13B and 13C of the drawings of the specification of the present invention, fig. 13A shows in this modified embodiment of the directional microwave detecting antenna 10, the directional microwave detecting antenna 10 has a radiation gain of up to 7.2dB in the directional radiation direction, and the S11 curve of the directional microwave detecting antenna 10 shows an obvious narrow valley near 5.8GHz, and has a resonant frequency point with low loss, so that the directional microwave detecting antenna 10 has excellent performance, is suitable for microwave detection, and has good anti-interference performance.
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 (10)
1. Directional microwave detection antenna, characterized by, including:
a reference ground; and
a strip-shaped transducer, wherein the strip-shaped transducer has a wavelength electrical length equal to or greater than 1/4 and equal to or less than 3/2, wherein the strip-shaped transducer extends from both ends thereof on the same side of the reference ground, the strip-shaped transducer has two coupling sections, wherein one end of each of the two coupling sections near the end of the strip-shaped transducer is a proximal end, wherein the two coupling sections extend from the proximal ends thereof in directions away from each other, wherein in a state where the strip-shaped transducer is fed with excitation signals being fed to both poles of the excitation signals or with excitation signals having a phase difference being fed to both ends thereof, the two proximal ends can be coupled to each other with a phase difference being formed, where λ is a wavelength parameter corresponding to the frequency of the excitation signals.
2. The directional microwave detection antenna of claim 1, wherein the distance between the proximal end and the reference ground is λ/128 or more and λ/6 or less, and the distance between the proximal ends is λ/128 or more and λ/2 or less.
3. The directional microwave detection antenna of claim 2, wherein the two coupling sections extend sequentially from the proximal ends thereof in a direction away from each other, in a direction away from the reference ground, and in a direction toward each other.
4. The directional microwave detection antenna as claimed in any one of claims 1 to 3, wherein the directional microwave detection antenna further comprises a circuit substrate, wherein the ground reference is carried on the circuit substrate, and wherein both ends of the strip-shaped element are fixed to the circuit substrate.
5. The directional microwave probe antenna of claim 4, wherein both end portions of the strip-shaped element are connected to a feed structure designed in the form of a pin and fixed to the circuit substrate.
6. The directional microwave detection antenna according to claim 4, wherein both end portions of the strip-shaped element are connected to a feeding structure designed in a form of mounting and fixed to the circuit substrate.
7. The directional microwave detection antenna according to any one of claims 1 to 3, wherein the strip oscillator is configured to be carried on an antenna substrate in a microstrip line configuration.
8. The directional microwave detection antenna of claim 7, wherein the directional microwave detection antenna further comprises another of the strip-shaped oscillators, wherein the two strip-shaped oscillators are carried on both sides of the antenna substrate in a microstrip line form as mirror images and are electrically connected by a metalized via hole.
9. The directional microwave detection antenna according to any one of claims 1 to 3, wherein the strip-shaped vibrator is configured to be designed on an antenna substrate in a combined form of a microstrip line and a metallized hole.
10. The directional microwave detection antenna of any one of claims 1 to 3, wherein the directional microwave detection antenna further comprises a stub load, wherein the stub load is electrically connected to the bar oscillator so as to be loaded on the bar oscillator between two ends of the bar oscillator.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021104589585 | 2021-04-27 | ||
| CN202110458958 | 2021-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217239740U true CN217239740U (en) | 2022-08-19 |
Family
ID=76780617
Family Applications (22)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120920246.6U Active CN217427078U (en) | 2021-04-27 | 2021-04-30 | Half-wave reverse-folding directional microwave detection antenna |
| CN202110477994.6A Active CN113131202B (en) | 2021-04-27 | 2021-04-30 | Half-wave reverse-folded directional microwave detection antenna |
| CN202110491234.0A Active CN113131203B (en) | 2021-04-27 | 2021-05-06 | Half-wave reverse-folded directional microwave detection antenna |
| CN202120948682.4U Active CN217361891U (en) | 2021-04-27 | 2021-05-06 | Half-wave reverse-folding directional microwave detection antenna |
| CN202121049791.9U Active CN217934208U (en) | 2021-04-27 | 2021-05-17 | Demodularization Doppler microwave detection device |
| CN202121051796.5U Active CN217823252U (en) | 2021-04-27 | 2021-05-17 | Demodularization Doppler microwave detection device |
| CN202121270354.XU Active CN215377682U (en) | 2021-04-27 | 2021-06-07 | Half-wave reverse-folding directional microwave detection antenna |
| CN202121531038.3U Active CN216351209U (en) | 2021-04-27 | 2021-07-07 | Anti-interference half-wave folded antenna microwave detection device |
| CN202121726640.2U Active CN215816392U (en) | 2021-04-27 | 2021-07-28 | Half-wave reverse-folding directional microwave detection antenna |
| CN202121736143.0U Active CN216354774U (en) | 2021-04-27 | 2021-07-28 | Half-wave oscillator braid and de-modularization Doppler microwave detection device |
| CN202121726634.7U Active CN215816391U (en) | 2021-04-27 | 2021-07-28 | Half-wave reverse-folding directional microwave detection antenna |
| CN202121872815.0U Active CN215816394U (en) | 2021-04-27 | 2021-08-11 | Half-wave reverse-folding directional microwave detection antenna |
| CN202121872818.4U Active CN215816395U (en) | 2021-04-27 | 2021-08-11 | Half-wave reverse-folding directional microwave detection antenna |
| CN202122119702.XU Active CN215771548U (en) | 2021-04-27 | 2021-09-03 | Half-wave reverse-folding directional microwave detection antenna |
| CN202122118842.5U Active CN215771547U (en) | 2021-04-27 | 2021-09-03 | Transmit-receive separated half-wave reverse-folding directional microwave detection antenna |
| CN202122118819.6U Active CN215771546U (en) | 2021-04-27 | 2021-09-03 | Transmit-receive separated half-wave reverse-folding directional microwave detection antenna |
| CN202122119701.5U Active CN216354775U (en) | 2021-04-27 | 2021-09-03 | Transmit-receive separated half-wave reverse-folding directional microwave detection antenna |
| CN202122335537.1U Active CN216354776U (en) | 2021-04-27 | 2021-09-26 | Microwave detection antenna with miniaturized impedance matching structure design |
| CN202111130513.0A Pending CN113794048A (en) | 2021-04-27 | 2021-09-26 | Microwave detection antenna with miniaturized impedance matching structure design |
| CN202122658651.8U Active CN216900920U (en) | 2021-04-27 | 2021-11-02 | Doppler microwave detection module and lamp |
| CN202220348617.2U Active CN216773510U (en) | 2021-04-27 | 2022-02-21 | Directional microwave detection antenna |
| CN202220345437.9U Active CN217239740U (en) | 2021-04-27 | 2022-02-21 | Directional microwave detection antenna |
Family Applications Before (21)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120920246.6U Active CN217427078U (en) | 2021-04-27 | 2021-04-30 | Half-wave reverse-folding directional microwave detection antenna |
| CN202110477994.6A Active CN113131202B (en) | 2021-04-27 | 2021-04-30 | Half-wave reverse-folded directional microwave detection antenna |
| CN202110491234.0A Active CN113131203B (en) | 2021-04-27 | 2021-05-06 | Half-wave reverse-folded directional microwave detection antenna |
| CN202120948682.4U Active CN217361891U (en) | 2021-04-27 | 2021-05-06 | Half-wave reverse-folding directional microwave detection antenna |
| CN202121049791.9U Active CN217934208U (en) | 2021-04-27 | 2021-05-17 | Demodularization Doppler microwave detection device |
| CN202121051796.5U Active CN217823252U (en) | 2021-04-27 | 2021-05-17 | Demodularization Doppler microwave detection device |
| CN202121270354.XU Active CN215377682U (en) | 2021-04-27 | 2021-06-07 | Half-wave reverse-folding directional microwave detection antenna |
| CN202121531038.3U Active CN216351209U (en) | 2021-04-27 | 2021-07-07 | Anti-interference half-wave folded antenna microwave detection device |
| CN202121726640.2U Active CN215816392U (en) | 2021-04-27 | 2021-07-28 | Half-wave reverse-folding directional microwave detection antenna |
| CN202121736143.0U Active CN216354774U (en) | 2021-04-27 | 2021-07-28 | Half-wave oscillator braid and de-modularization Doppler microwave detection device |
| CN202121726634.7U Active CN215816391U (en) | 2021-04-27 | 2021-07-28 | Half-wave reverse-folding directional microwave detection antenna |
| CN202121872815.0U Active CN215816394U (en) | 2021-04-27 | 2021-08-11 | Half-wave reverse-folding directional microwave detection antenna |
| CN202121872818.4U Active CN215816395U (en) | 2021-04-27 | 2021-08-11 | Half-wave reverse-folding directional microwave detection antenna |
| CN202122119702.XU Active CN215771548U (en) | 2021-04-27 | 2021-09-03 | Half-wave reverse-folding directional microwave detection antenna |
| CN202122118842.5U Active CN215771547U (en) | 2021-04-27 | 2021-09-03 | Transmit-receive separated half-wave reverse-folding directional microwave detection antenna |
| CN202122118819.6U Active CN215771546U (en) | 2021-04-27 | 2021-09-03 | Transmit-receive separated half-wave reverse-folding directional microwave detection antenna |
| CN202122119701.5U Active CN216354775U (en) | 2021-04-27 | 2021-09-03 | Transmit-receive separated half-wave reverse-folding directional microwave detection antenna |
| CN202122335537.1U Active CN216354776U (en) | 2021-04-27 | 2021-09-26 | Microwave detection antenna with miniaturized impedance matching structure design |
| CN202111130513.0A Pending CN113794048A (en) | 2021-04-27 | 2021-09-26 | Microwave detection antenna with miniaturized impedance matching structure design |
| CN202122658651.8U Active CN216900920U (en) | 2021-04-27 | 2021-11-02 | Doppler microwave detection module and lamp |
| CN202220348617.2U Active CN216773510U (en) | 2021-04-27 | 2022-02-21 | Directional microwave detection antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (22) | CN217427078U (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN217427078U (en) * | 2021-04-27 | 2022-09-13 | 深圳迈睿智能科技有限公司 | Half-wave reverse-folding directional microwave detection antenna |
| WO2022227361A1 (en) * | 2021-04-27 | 2022-11-03 | 深圳迈睿智能科技有限公司 | Half-wave back-folding directional microwave detection antenna |
| CN114624696B (en) * | 2022-01-25 | 2024-10-22 | 深圳迈睿智能科技有限公司 | Microwave detection method and device |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1478266A1 (en) * | 1987-09-22 | 1989-05-07 | Московский Электротехнический Институт Связи | Phase shifter |
| US7075493B2 (en) * | 2002-05-01 | 2006-07-11 | The Regents Of The University Of Michigan | Slot antenna |
| JP2012529830A (en) * | 2009-06-09 | 2012-11-22 | イギリス国 | Compact ultra-wideband antenna for transmitting and receiving radio waves |
| JP6253478B2 (en) * | 2014-03-27 | 2017-12-27 | ダイハツ工業株式会社 | Internal combustion engine |
| CN204029994U (en) * | 2014-07-23 | 2014-12-17 | 广州桑瑞通信设备有限公司 | The compound oscillator antenna for base station of dual polarization |
| CN107978847A (en) * | 2017-11-22 | 2018-05-01 | 深圳市盛路物联通讯技术有限公司 | Radio frequency antenna apparatus |
| WO2019134134A1 (en) * | 2018-01-05 | 2019-07-11 | 深圳市大疆创新科技有限公司 | Dipole antenna and unmanned aerial vehicle |
| CN108777357B (en) * | 2018-05-31 | 2024-02-06 | 北京邮电大学 | Broadband double-frequency dipole base station antenna with series structure |
| CN109346826A (en) * | 2018-09-12 | 2019-02-15 | 上海无线电设备研究所 | Multipolarization dipole antenna |
| CN109541551A (en) * | 2018-12-21 | 2019-03-29 | 深圳迈睿智能科技有限公司 | Multi-beam is the same as frequency microwave sounding antenna and its manufacturing method and detection method |
| CN210668672U (en) * | 2019-10-17 | 2020-06-02 | 佛山市安捷信通讯设备有限公司 | Antenna element and dual-polarized directional antenna |
| CN211428343U (en) * | 2020-03-23 | 2020-09-04 | 中天通信技术有限公司 | Half-wave oscillator |
| CN111293414A (en) * | 2020-03-25 | 2020-06-16 | 深圳迈睿智能科技有限公司 | Microwave inductor |
| CN211453981U (en) * | 2020-03-25 | 2020-09-08 | 深圳迈睿智能科技有限公司 | High-gain microwave Doppler detection module |
| CN111290036A (en) * | 2020-03-25 | 2020-06-16 | 深圳迈睿智能科技有限公司 | High-gain microwave Doppler detection module |
| CN211698235U (en) * | 2020-04-20 | 2020-10-16 | 深圳迈睿智能科技有限公司 | 5.8G high-gain microwave Doppler detection module |
| CN111900532A (en) * | 2020-08-26 | 2020-11-06 | 佛山市三水多恩通讯电器设备有限公司 | Antenna oscillator and broadband multi-port omnidirectional antenna using same |
| CN112510362A (en) * | 2020-09-25 | 2021-03-16 | 深圳迈睿智能科技有限公司 | Reverse-phase double-feed microwave detection module |
| CN217427078U (en) * | 2021-04-27 | 2022-09-13 | 深圳迈睿智能科技有限公司 | Half-wave reverse-folding directional microwave detection antenna |
-
2021
- 2021-04-30 CN CN202120920246.6U patent/CN217427078U/en active Active
- 2021-04-30 CN CN202110477994.6A patent/CN113131202B/en active Active
- 2021-05-06 CN CN202110491234.0A patent/CN113131203B/en active Active
- 2021-05-06 CN CN202120948682.4U patent/CN217361891U/en active Active
- 2021-05-17 CN CN202121049791.9U patent/CN217934208U/en active Active
- 2021-05-17 CN CN202121051796.5U patent/CN217823252U/en active Active
- 2021-06-07 CN CN202121270354.XU patent/CN215377682U/en active Active
- 2021-07-07 CN CN202121531038.3U patent/CN216351209U/en active Active
- 2021-07-28 CN CN202121726640.2U patent/CN215816392U/en active Active
- 2021-07-28 CN CN202121736143.0U patent/CN216354774U/en active Active
- 2021-07-28 CN CN202121726634.7U patent/CN215816391U/en active Active
- 2021-08-11 CN CN202121872815.0U patent/CN215816394U/en active Active
- 2021-08-11 CN CN202121872818.4U patent/CN215816395U/en active Active
- 2021-09-03 CN CN202122119702.XU patent/CN215771548U/en active Active
- 2021-09-03 CN CN202122118842.5U patent/CN215771547U/en active Active
- 2021-09-03 CN CN202122118819.6U patent/CN215771546U/en active Active
- 2021-09-03 CN CN202122119701.5U patent/CN216354775U/en active Active
- 2021-09-26 CN CN202122335537.1U patent/CN216354776U/en active Active
- 2021-09-26 CN CN202111130513.0A patent/CN113794048A/en active Pending
- 2021-11-02 CN CN202122658651.8U patent/CN216900920U/en active Active
-
2022
- 2022-02-21 CN CN202220348617.2U patent/CN216773510U/en active Active
- 2022-02-21 CN CN202220345437.9U patent/CN217239740U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113131202A (en) | 2021-07-16 |
| CN215771547U (en) | 2022-02-08 |
| CN113131202B (en) | 2024-02-09 |
| CN216773510U (en) | 2022-06-17 |
| CN215816391U (en) | 2022-02-11 |
| CN217934208U (en) | 2022-11-29 |
| CN215771546U (en) | 2022-02-08 |
| CN216354775U (en) | 2022-04-19 |
| CN217823252U (en) | 2022-11-15 |
| CN215816394U (en) | 2022-02-11 |
| CN113794048A (en) | 2021-12-14 |
| CN216354776U (en) | 2022-04-19 |
| CN217361891U (en) | 2022-09-02 |
| CN215377682U (en) | 2021-12-31 |
| CN215816392U (en) | 2022-02-11 |
| CN215771548U (en) | 2022-02-08 |
| CN216351209U (en) | 2022-04-19 |
| CN216354774U (en) | 2022-04-19 |
| CN215816395U (en) | 2022-02-11 |
| CN217427078U (en) | 2022-09-13 |
| CN113131203A (en) | 2021-07-16 |
| CN216900920U (en) | 2022-07-05 |
| CN113131203B (en) | 2023-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217239740U (en) | Directional microwave detection antenna | |
| CN218958019U (en) | Double-end feed type differential antenna | |
| CN216563519U (en) | Space staggered type integrated receiving and transmitting separation microwave detection antenna | |
| TW202024664A (en) | Multi-beam co-frequency microwave detecting antenna, manufacturing method and detecting method thereof | |
| CN212749243U (en) | Microwave detection module | |
| CN221842002U (en) | Column antenna of side directional wave beam shaping | |
| EP4084223A1 (en) | Half-wave back-folding directional microwave detection antenna | |
| CN217427079U (en) | Dislocation microwave detection antenna | |
| CN217239743U (en) | Anti-interference microwave detection antenna | |
| CN217239741U (en) | Dislocation orthogonal integrated microwave detection antenna | |
| CN218215671U (en) | Board-carried microwave detection antenna | |
| CN221842003U (en) | Half-wave reverse-folding directional microwave detection antenna capable of inhibiting frequency offset | |
| CN113945986B (en) | Doppler microwave detection device and gain improvement method thereof | |
| CN217387527U (en) | Half-wave reverse-folding directional microwave detection antenna and half-wave oscillator braid | |
| CN216120757U (en) | Transmit-receive separated microwave detection antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |