CN217387527U - Half-wave reverse-folding directional microwave detection antenna and half-wave oscillator braid - Google Patents

Abstract

The utility model provides a half-wave zigzag directional microwave detection antenna and a half-wave oscillator braid, wherein the half-wave zigzag directional microwave detection antenna is arranged to work in the C wave band and comprises at least one half-wave oscillator, a reference ground, a feed line and a limit supporting seat, wherein the limit supporting seat supports and/or fixes the half-wave vibrator to improve the structural stability of the half-wave vibrator and maintain the position relationship among the half-wave vibrator, the feeder line and the limit supporting seat, the half-wave reverse-folding directional microwave detection antenna has the advantages of comprehensive consideration of structural stability, performance stability and production cost, excellent practical performance, the half-wave oscillator braid ensures the structural stability and consistency of the half-wave reverse-folding directional microwave detection antenna in the production process, and is further favorable for the consistency and stability of the half-wave reverse-folding directional microwave detection antenna.

Description

Half-wave reverse-folding directional microwave detection antenna and half-wave oscillator braid

Technical Field

The utility model relates to a microwave detection field, in particular to directional microwave detection antenna of half-wave inflection formula and half-wave oscillator braid.

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 principle of Doppler effect, 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 1C of the drawings of the present disclosure, the structure principle of a microwave detector 10P of a conventional pillar-shaped radiation source structure and a radiation pattern and S11 curve 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 a reference ground 12P, wherein the reference ground 12P is provided with a radiation hole 121P, wherein the pillar-shaped radiation source 11P extends from a feeding end 111P thereof 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 electrical length between an end of the pillar-shaped radiation source 11P far from the feeding end 111P thereof and the reference ground 12P is one quarter wavelength or more, so that the microwave detector 10P of the cylindrical radiation source structure can have a corresponding resonant frequency and selectivity for the reflected echo, and thus is suitable for microwave detection based on the doppler effect principle, such that when the cylindrical radiation source 11P is fed by a corresponding excitation signal at its feeding end 111P, the cylindrical radiation source 11P can be coupled with the reference ground 12P to form a radiation space 100P from the radiation gap 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 of an end of the cylindrical radiation source 11P away from its feeding end 111P is the largest under excitation of the corresponding excitation signal, and then under setting of an appropriate area of the reference ground 12P, front and back electromagnetic radiation of the microwave detector 10P of the cylindrical radiation source structure is bound by the reference ground 12P The irradiation ranges tend to be uniform and have no directional radiation capability, a detection dead zone is formed in the extending direction of the two ends of the columnar radiation source 11P, a larger 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 ends 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 ends of the cylindrical radiation source 11P, corresponding to the condition that the detection region of the microwave detector 10P with the cylindrical radiation source structure cannot be matched with the target space, for example, the condition that the detection region is partially overlapped with the target space in a crossing manner, so as to be in a state that the target space outside the detection region cannot be effectively detected, and/or in 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, the columnar radiation source 11P has a higher height and has certain requirements on the structural form of the corresponding microwave detection device provided with the microwave detector 10P of the columnar radiation source structure, and no matter the microwave detector 10P of the columnar radiation source structure or the microwave detector of the flat radiation source structure, the coupling energy forming the radiation space is mainly concentrated between the reference ground and the corresponding radiation source, and the resonance stability of the corresponding microwave detector has strict electrical parameter requirements on the medium between the reference ground and the corresponding radiation source and the reference ground, so that the corresponding microwave detector needs to be arranged on the corresponding microwave detection device in an independent modular structure comprising the reference ground and the corresponding radiation source in practical use, while further requirements are placed on the structural configuration of the corresponding microwave detection device, cost control and automated production control are not facilitated.

In addition, since the cylindrical radiation source 11P has a relatively high height, it is easily deformed by an external force during the production and use processes, which affects the performance of the corresponding microwave detecting device of the microwave detector 10P with the cylindrical radiation source structure, and no matter the microwave detector 10P with the cylindrical radiation source structure or the microwave detector with the flat radiation source structure, when the corresponding radiation source is installed and electrically connected during the production process, it is difficult to avoid touching the radiation source, which easily causes the deformation of the radiation source, which is not favorable for maintaining the stability of the mass production of the corresponding microwave detecting device, and thus the production cost and the use cost of the existing microwave detector are difficult to be precisely controlled.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a half-wave inflection formula directional microwave detection antenna, wherein half-wave inflection formula 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 receipt and have the best transmission performance at resonance frequency point, and half-wave inflection formula directional microwave detection antenna stable in structure can ensure uniformity and stability in batch production, is favorable to automated production's control and control of cost, and is favorable to the guarantee the structural stability of half-wave inflection formula directional microwave detection antenna in the use.

An object of the utility model is to provide a half-wave inflection formula directional microwave detection antenna and half-wave oscillator braid, wherein half-wave inflection formula directional microwave detection antenna can form directional radiation, then under the area condition on same reference ground, half-wave inflection formula directional microwave detection antenna gain in the directional radiation direction for the microwave detector of column radiation structure can be promoted by the multiple, therefore is favorable to improving half-wave inflection formula directional microwave detection antenna's detection distance and detectivity.

An object of the utility model is to provide a half-wave inflection formula directional microwave detection antenna and half-wave oscillator braid, wherein half-wave inflection formula directional microwave detection antenna has obvious resonant frequency point, corresponds the Q value of half-wave inflection formula directional microwave detection antenna on the frequency point of working is high and have good frequency-selective characteristic, promptly half-wave inflection formula directional microwave detection antenna has good selectivity and has stronger interference killing feature to the reflection echo of receiving.

An object of the utility model is to provide a directional microwave of half-wave inflection formula surveys antenna and half-wave oscillator braid, wherein the directional microwave of half-wave inflection formula surveys antenna is set up work in the C wave band, the directional microwave of half-wave inflection formula surveys antenna includes an at least half-wave oscillator and a reference ground, wherein through right the inflection of half-wave oscillator forms the both ends of half-wave oscillator are in the state that is close to each other in the distance range of more than or equal to 0.4mm and less than or equal to 3.2mm in 20% error, so in order based on corresponding feed structure in when forming the phase difference between the both ends of half-wave oscillator, the both ends of half-wave oscillator can the intercoupling, then the half-wave oscillator is close to in the distance range of more than or equal to 0.4mm in 20% error with its both ends the reference ground, and wherein at least one end is close to in the distance range of less than or equal to 8.6mm the state of reference ground with when reference ground looks interval ground is set up The energy of direct coupling between the end part of the half-wave oscillator and the reference ground can be reduced, so that obvious resonance frequency points can be generated based on the coupling between the two ends of the half-wave oscillator while the directional radiation of the half-wave reverse-folded directional microwave detection antenna is formed, the matching with a corresponding target space is correspondingly facilitated, the selectivity of received reflected echoes is realized, and the microwave detection antenna is suitable for microwave detection based on the Doppler effect principle.

An object of the utility model is to provide a half-wave backfolding directional microwave detection antenna and half-wave oscillator braid, wherein half-wave backfolding directional microwave detection antenna includes a spacing supporting seat, wherein spacing supporting seat is right the half-wave oscillator forms and supports and/or fix, thereby improves the structural stability of half-wave oscillator corresponds the improvement the structural stability of half-wave backfolding directional microwave detection antenna, so in order to be favorable to right the control of the automated production of half-wave backfolding directional microwave detection antenna is favorable to manufacturing cost's control.

An object of the utility model is to provide a directional microwave detection antenna of half-wave inflection formula and half-wave oscillator braid, wherein based on spacing supporting seat is right the support and/or the fixing of the directional microwave detection antenna of half-wave inflection formula, the half-wave oscillator produces the probability of deformation in production and use by a wide margin and is reduced, so in order to be favorable to reducing the manufacturing cost and the use cost of the directional microwave detection antenna of half-wave inflection formula have important meaning to the popularization of microwave detection technique.

An object of the utility model is to provide a directional microwave detection antenna of half-wave inflection formula and half-wave oscillator braid, wherein consider that spacing supporting seat forms to the support of half-wave oscillator is right when fixed the influence that the medium environment that the half-wave oscillator was located produced, will spacing supporting seat's form reaches spacing supporting seat with the adjustment of the contact position of half-wave oscillator is explored, has verified and to have formed directional radiation and produced obvious resonance frequency point, and has avoided forming in directional radiation direction and has surveyed the blind spot, and has stable structure the directional microwave detection antenna of half-wave inflection formula, therefore be applicable to the microwave detection based on the doppler effect principle, and have good structural stability.

An object of the utility model is to provide a directional microwave detection antenna of half-wave inflection formula and half-wave oscillator braid, wherein at least one end of half-wave oscillator is close to in the inherent more than or equal to 0.4mm of 20% error and less than or equal to 8.6 mm's distance scope reference ground then under the prerequisite that forms directional radiation, right the area requirement on reference ground is reduced, so in order to be favorable to the miniaturization of the directional microwave detection antenna of half-wave inflection formula.

An object of the utility model is to provide a half-wave backfolding directional microwave detection antenna and half-wave oscillator braid, wherein the both ends of half-wave oscillator can the intercoupling, correspond under the prerequisite requirement that forms directional radiation, it is right the electrical parameter requirement on reference ground is reduced, promptly reference ground allows to be set up other components and parts and do not influence the normal work of half-wave backfolding directional microwave detection antenna, so in order to be favorable to forming through corresponding circuit mainboard the mode on reference ground forms half-wave backfolding directional microwave detection antenna is in the integrated setting of removing the modularization of corresponding microwave detection device, has reduced half-wave backfolding directional microwave detection antenna's occupation space.

An object of the utility model is to provide a half-wave backfolding directional microwave detection antenna and half-wave oscillator braid, wherein half-wave backfolding directional microwave detection antenna work in the C wave band, the half-wave oscillator have 26 mm's physical length in 20% error and have with half-wave backfolding directional microwave detection antenna's the half physical length of the corresponding wavelength parameter of operating frequency, so in order to be favorable to based on corresponding feed structure in form between the both ends of half-wave oscillator and tend to the antiphase phase difference, and then be favorable to making intercoupling's energy tends to the maximize and improves between the both ends of half-wave oscillator half-wave backfolding directional microwave detection antenna's gain and production obvious resonance frequency point.

An object of the utility model is to provide a directional microwave detection antenna of half-wave inflection formula and half-wave oscillator braid, wherein the half-wave oscillator has a feed point, the feed point is partial to one of them end of half-wave oscillator and is close to with this end, correspond and name this end and be the feed end of half-wave oscillator, wherein the other end of half-wave oscillator is relative the feed end is kept away from the reference ground, promptly the distance between the other end of half-wave oscillator and the reference ground is greater than the distance between feed end and the reference ground, so that when the feed point is to the feed of half-wave oscillator, can be in the other end of half-wave oscillator to the reference ground direction, in the half-wave oscillator forms the hierarchical distribution of current density from high to low to be favorable to further reduce the energy of direct coupling between the both ends of half-wave oscillator and the reference ground, and forming vector superposition of an electric field between the two end parts of the half-wave oscillator and the reference ground, so that the gain of the half-wave reverse-folded directional microwave detection antenna is further improved while an obvious resonance frequency point is generated.

An object of the utility model is to provide a half-wave inflection formula directional microwave detection antenna and half-wave oscillator braid, wherein half-wave inflection formula directional microwave detection antenna further includes a feeder, wherein the one end of feeder by electric connection in the half-wave oscillator the feed point, wherein the feeder has more than or equal to 0.4mm and less than or equal to 12.9 mm's physical length in 20% error band, with the feeder inserts in its other end and corresponding excitation source electric coupling during the excitation signal, warp the feeder with the electric connection of feed point the half-wave oscillator with reference ground looks spaced state, in the half-wave oscillator the feed point is to half-wave oscillator feed.

An object of the utility model is to provide a half-wave backfolding formula directional microwave detection antenna and half-wave oscillator braid, wherein the half-wave oscillator is designed with the rectangular form of column, wherein the feeder is designed for with the rectangular form of column the half-wave oscillator is added thick design, it is right based on the thick design tuning of adding of feeder the resonant frequency point of half-wave backfolding formula directional microwave detection antenna to with corresponding operating frequency assorted in, improve the feeder is right the support intensity of half-wave oscillator and improve the structural stability of half-wave backfolding formula directional microwave detection antenna.

An object of the utility model is to provide a half-wave backfolding directional microwave detection antenna and half-wave oscillator braid, wherein through right the branch and branch load design of half-wave oscillator, the resonance frequency point of half-wave backfolding directional microwave detection antenna can be designed with corresponding work frequency point phase-match, thereby is favorable to the guarantee the interference killing feature of half-wave backfolding directional microwave detection antenna, simultaneously simple and easy is favorable to the guarantee uniformity and the reliability of half-wave backfolding directional microwave detection antenna in batch production.

An object of the utility model is to provide a half-wave backfolding directional microwave detection antenna and half-wave oscillator braid, wherein the resonance frequency point of half-wave backfolding directional microwave detection antenna is in the half-wave oscillator, the minor matters load and under the restriction of fixed relation of connection between the feeder, by the half-wave oscillator, the minor matters load and the feeder length is confirmed the half-wave oscillator, the minor matters load and feeder length and the relation of connection between each other are maintained unchangeable state, formed based on batch production error and daily use the slight deformation of half-wave oscillator is difficult to influence the operating parameter of half-wave backfolding directional microwave detection antenna, it is corresponding half-wave backfolding directional microwave detection antenna has good uniformity and stability.

One purpose of the utility model is to provide a half-wave folded directional microwave detection antenna and a half-wave oscillator braid, wherein the limit supporting seat comprises a base, a clamping limit part and a half-wave oscillator supporting column which extend from the base in the same direction, wherein the clamping limiting part is provided with a limiting hole, the clamping limiting part clamps the feeder line in a state that the feeder line passes through the limiting hole, so as to support and limit the half-wave oscillator, wherein the half-wave oscillator supporting column is provided with two supporting channels, wherein in the state that the feeder line is clamped by the clamping limiting part, the half-wave vibrator is supported by the half-wave vibrator support columns in a state of simultaneously passing through the two support channels, therefore, in the state that the base is fixed, the limiting support seat supports and fixes the half-wave vibrator.

An object of the utility model is to provide a directional microwave detection antenna of half-wave inflection formula and half-wave oscillator braid, wherein the half-wave oscillator is turned back and certainly the feed end order is in a parallel with reference ground direction, and keep away from reference ground direction and reverse being in a parallel with reference ground direction extends, corresponds the half-wave oscillator has in a parallel with reference ground's direction from its both ends syntropy extending two coupling sections and at the perpendicular to reference ground direction is connected in two a linkage segment between the coupling section, wherein the feeder quilt the state of the spacing portion centre gripping of centre gripping, the half-wave oscillator specifically with two the coupling section passes two the state of supporting channel is by the half-wave oscillator support column supports.

An object of the utility model is to provide a half-wave backfolding formula directional microwave detection antenna and half-wave oscillator braid, wherein two of half-wave oscillator the coupling section quilt respectively the two of half-wave oscillator support column support the passageway and support, thereby based on two of half-wave oscillator support column support position relation between the passageway is injectd, makes two position relation between the coupling section is fixed, so in order to reduce in-process in production and use the half-wave oscillator produces the probability of deformation, corresponding assurance the half-wave oscillator has stable structure.

An object of the utility model is to provide a half-wave backfolding formula directional microwave detection antenna and half-wave oscillator braid, wherein the half-wave oscillator with the feeder adopts punching press technology an organic whole to form and in the half-wave oscillator the linkage segment is connected in a strap and is formed the half-wave oscillator braid, wherein spacing supporting seat is formed with injection molding process the half-wave oscillator with the feeder form with the half-wave oscillator with position relation between the feeder to be favorable to in subsequent production process, getting through corresponding mechanical automation and putting spacing supporting seat is in order to accomplish the corresponding production process of half-wave backfolding formula directional microwave detection antenna avoids in batch production in-process direct contact the half-wave oscillator and leads to the half-wave oscillator produces deformation, improves when the production efficiency of half-wave backfolding formula directional microwave detection antenna improves the production yield yields of half-wave backfolding formula directional microwave detection antenna .

According to an aspect of the utility model provides a half-wave backfolding formula directional microwave detection antenna, wherein half-wave backfolding formula directional microwave detection antenna includes:

at least one half-wave oscillator, wherein the half-wave folded directional microwave detection antenna is configured to operate in a C-band, wherein the half-wave oscillator has a physical length of 26mm within a 20% error, the half-wave oscillator is folded back to form a state in which a distance between two ends of the half-wave oscillator is greater than or equal to 0.4mm and less than or equal to 3.2mm within a 20% error, wherein the half-wave oscillator has a feeding point biased to be close to one end of the half-wave oscillator, and the end is named as a feeding end of the half-wave oscillator correspondingly, wherein in a state in which the half-wave oscillator is fed by being connected to a corresponding excitation signal at the feeding point, two ends of the half-wave oscillator can form a phase difference tending to reverse phase and are coupled with each other;

the half-wave oscillator is spaced from the reference ground in a state that the distance between the feeding end and the reference ground is less than or equal to the distance between the other end of the half-wave oscillator and the reference ground;

a feeder line, wherein one end of the feeder line is electrically connected to the feeding point of the half-wave oscillator, so that when the other end of the feeder line is electrically coupled with the corresponding excitation source to access the excitation signal, the feeder line feeds the half-wave oscillator at the feeding point; and

a spacing supporting seat, wherein the spacing supporting seat includes a base and a centre gripping spacing portion and a half-wave oscillator support column that certainly the base syntropy extends, wherein the spacing portion of centre gripping has a spacing hole, the spacing portion of centre gripping with the feeder line passes the state centre gripping in spacing hole, wherein the half-wave oscillator support column has two support channels, wherein in the state that the feeder line is by the spacing portion centre gripping of centre gripping, the half-wave oscillator is supported by the half-wave oscillator support column with the state that passes two simultaneously support channels, thereby in the state that the base is fixed, spacing supporting seat forms the support and the fixing of half-wave oscillator.

In one embodiment, the half-wave dipole has two coupling sections extending from two ends thereof in the same direction in a direction parallel to the reference ground and a connection section connected between the two coupling sections in a direction perpendicular to the reference ground, wherein the half-wave folded directional microwave detecting antenna includes a stub load extending from the coupling section near the reference ground in a direction toward the reference ground.

In one embodiment, the half-wave oscillator support column supports the half-wave oscillator at a central position of the coupling section near the reference ground.

In an embodiment, two of the supporting channels have a structural shape suitable for being attached to the half-wave oscillator, so as to form a coating on the half-wave oscillator at the periphery of the half-wave oscillator.

In one embodiment, the half-wave folded directional microwave detecting antenna includes a circuit substrate, wherein the ground reference is carried on the circuit substrate in a copper-clad manner, and the base is fixed on the circuit substrate.

In an embodiment, the base has two side wings, and the two side wings extend from two sides of the base in a non-contact manner in the width direction of the position-limiting supporting seat at the position of the half-wave oscillator supporting column.

In an embodiment, wherein within a 5% error, the coupling section away from the reference ground has a physical length of 14.3mm, the coupling section near the reference ground has a physical length of 12.15mm, and the connecting section has a physical length of 1.2 mm; and within a 20% error, the half-wave vibrator has a width and a thickness of 0.6mm, wherein the feeding point is located at the feeding end, wherein a distance along the half-wave vibrator between a load position of the stub loaded on the half-wave vibrator and the feeding line is 9.53mm, a distance along the half-wave vibrator between an end of the coupling section opposite to the feeding end, which is close to the reference ground, is 2.02mm, wherein a length of a vertical connection line between an end of the stub loaded, which is close to the reference ground, and a top of the half-wave vibrator is 5mm, and wherein the coupling section, which is close to the reference ground, has a distance of 3.5mm within a 20% error from the reference ground.

In an embodiment, within a tolerance of 20%, the base has a height of 0.6mm, the position-limiting supporting seat has a height of 1.2mm at the position of the clamping position-limiting part, and the half-wave oscillator supporting column has a thickness of 0.6 mm.

In one embodiment, the feeder line has a thickened section and a pin section, wherein the thickened section extends from one end of the thickened section in a direction toward the reference ground in a state that the end is electrically connected to the feeding point of the half-wave oscillator, wherein the pin section extends from the other end of the thickened section in a direction toward the reference ground and is fixed to the circuit substrate and electrically coupled with the corresponding excitation source, wherein the thickened section has a physical length of 4mm within a tolerance range of 20%.

In one embodiment, the half-wave folded directional microwave probe antenna is configured to operate in a frequency range of 5.8GHz + -75 MHz in the C-band.

According to another aspect of the utility model, the utility model provides a half-wave oscillator braid, wherein the half-wave oscillator braid includes:

a metal strip;

at least one half-wave resonator, wherein the half-wave resonator has a physical length of 26mm within a tolerance of 20%, and has two coupling sections extending in parallel in a direction toward the metal strap with both ends of the half-wave resonator as ends, and a connection section perpendicularly connected to the two coupling sections, a distance between both ends of the half-wave resonator is greater than or equal to 0.4mm and less than or equal to 3.2mm within a tolerance of 20%, wherein the half-wave resonator has a feeding point biased toward one end of the half-wave resonator to be close to the one end, wherein both ends of the half-wave resonator are coupled to each other so as to form a phase difference tending to reverse phase in a state where the half-wave resonator is fed by being connected to a corresponding excitation signal at the feeding point, wherein the metal strap includes a connection pin extending from the metal strap to a middle position of the connection section, so that the half-wave oscillator is connected with the metal belt through the connecting pin;

feeder lines corresponding to the number of the half-wave oscillators, wherein one ends of the feeder lines are electrically connected to the feeding points of the half-wave oscillators; and

the limiting support seat is formed on the half-wave oscillator and the feeder line and provided with a base, a clamping limiting portion and a half-wave oscillator support column, the clamping limiting portion and the half-wave oscillator support column extend in the same direction from the base, the clamping limiting portion is provided with a limiting hole attached to the structural form of the feeder line so as to form a coating on the feeder line at the periphery of the feeder line, the half-wave oscillator support column is provided with two supporting channels attached to the structural form of the two coupling sections of the half-wave oscillator so as to form a coating on the two coupling sections at the periphery of the two coupling sections, and therefore the limiting support seat supports and fixes the half-wave oscillator in a fixed state of the base.

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 microwave detecting antenna with a conventional cylindrical radiation source structure.

Fig. 1B is a radiation pattern of the microwave detecting antenna of the cylindrical radiation source structure.

Fig. 1C is a S11 curve of the microwave detection antenna of the cylindrical radiation source structure.

Fig. 2A is a schematic partial structural view of a half-wave folded directional microwave detecting antenna according to an embodiment of the present invention.

Fig. 2B is a schematic structural diagram of the half-wave folded directional microwave detecting antenna according to the above embodiment of the present invention.

Fig. 2C is a radiation pattern of the half-wave folded directional microwave detecting antenna according to the above embodiment of the present invention.

Fig. 2D is a S11 curve of the half-wave folded directional microwave detecting antenna according to the above embodiment of the present invention.

Fig. 3A is a schematic diagram of an optimized tuning structure of the half-wave folded directional microwave detecting antenna according to the above embodiment of the present invention.

Fig. 3B is a radiation pattern of the preferred tuning structure of the half-wave folded directional microwave detecting antenna according to the above embodiment of the present invention.

Fig. 3C is a S11 curve of the preferred tuning structure of the half-wave folded directional microwave detecting antenna according to the above embodiment of the present invention.

Fig. 4A is a schematic view of a tuning exploration structure of the half-wave folded directional microwave detecting antenna according to the above embodiment of the present invention.

Fig. 4B is a radiation pattern of the tuning search structure of the half-wave folded directional microwave detecting antenna according to the above embodiment of the present invention.

Fig. 4C is a S11 curve of the tuning search structure of the half-wave folded directional microwave detecting antenna according to the above embodiment of the present invention.

Fig. 5A is a schematic view of another tuning exploration structure of the half-wave folded directional microwave detecting antenna according to the above embodiment of the present invention.

Fig. 5B is a radiation pattern of the tuning search structure of the half-wave folded directional microwave detecting antenna according to the above embodiment of the present invention.

Fig. 5C is a S11 curve of the tuning search structure of the half-wave folded directional microwave detecting antenna according to the above embodiment of the present invention.

Fig. 6A is a schematic diagram of another tuning exploration structure of the half-wave folded directional microwave detecting antenna according to the embodiment of the present invention.

Fig. 6B is a radiation pattern of the tuning search structure of the half-wave folded directional microwave detecting antenna according to the above embodiment of the present invention.

Fig. 6C is a S11 curve of the tuning search structure of the half-wave folded directional microwave detecting antenna according to the above embodiment of the present invention.

Fig. 7A to 7D are schematic size diagrams of the preferred tuning structure of the half-wave folded directional microwave detecting antenna according to the above embodiment of the present invention.

Fig. 8 is a schematic view of the non-modular integrated structure of the preferred tuning structure of the half-wave folded directional microwave detecting antenna according to the above embodiment of the present invention, corresponding to the doppler microwave detecting device.

Fig. 9 is a schematic structural view of a half-wave oscillator braid of the preferred tuning structure of the half-wave folded directional microwave detecting antenna according to the embodiment of the present invention in the production process.

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, electrically 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 2D of the drawings attached to the specification of the present invention, a half-wave folded directional microwave detecting antenna 10 according to an embodiment of the present invention is illustrated, wherein the half-wave folded directional microwave detecting antenna 10 is configured to operate in a C band, and particularly, in this embodiment of the present invention, the half-wave folded directional microwave detecting antenna 10 is configured to operate in a frequency range of 5.8GHz ± 75MHz in the C band, wherein the half-wave folded directional microwave detecting antenna 10 includes at least one half-wave oscillator 11 and a reference ground 12, wherein by folding back the half-wave oscillator 11, a state is formed in which both ends of the half-wave oscillator 11 are close to each other within a distance range of 0.4mm or more and 3.2mm or less within a 20% error, so as to form a phase difference between both ends of the half-wave oscillator 11 based on a corresponding feeding structure, the two ends of the half-wave vibrator 11 can be coupled with each other and have relatively high coupling energy, and then approach the reference ground 12 with the two ends thereof within a distance range of 0.4mm or more within a tolerance of 20% of the half-wave vibrator 11, and at least one end is provided at a distance from the reference ground 12 in a state of being close to the reference ground 12 in a distance range of 8.6mm or less, the energy directly coupled between the end of the half-wave vibrator 11 and the reference ground 12 can be reduced, thereby forming the directional radiation of the half-wave reverse-folded directional microwave detection antenna 10 and generating obvious resonance frequency points based on the coupling between the two ends of the half-wave oscillator 11, the correspondence is advantageously matched to the corresponding target space and has selectivity to the received reflected echo, and is thus suitable for microwave detection based on the doppler effect principle.

Particularly, the half-wave folded directional microwave detecting antenna 10 operates in the C-band, and the half-wave oscillator 11 has a physical length of 26mm within a 20% error and a physical length of half a wavelength parameter corresponding to an operating frequency of the half-wave folded directional microwave detecting antenna 10, so as to facilitate forming a phase difference tending to reverse between two ends of the half-wave oscillator 11 based on a corresponding feeding structure, and further facilitate maximizing energy mutually coupled between two ends of the half-wave oscillator 11 to improve a gain of the half-wave folded directional microwave detecting antenna 10 and generate an obvious resonant frequency point.

It should be noted that, if at least one end of the half-wave oscillator 11 is close to the reference ground 12 within a distance range of greater than or equal to 0.4mm and less than or equal to 8.6mm within a 20% error, the requirement on the area of the reference ground 12 is reduced under the precondition of forming directional radiation, so as to facilitate the miniaturization of the half-wave folded directional microwave detection antenna 10.

Further, in the structure in which the half-wave oscillator 11 is folded back in a state in which both ends of the half-wave oscillator 11 are close to each other within a distance range of 0.4mm or more and 3.2mm or less, in a state in which both ends of the half-wave oscillator 11 are close to the reference ground 12 within a distance range of 0.4mm or more and at least one end of the half-wave oscillator 11 is close to the reference ground 12 within a distance range of 8.6mm or less, a structural form of the half-wave folded-back type directional microwave detection antenna 10 in which a microwave detector corresponding to an existing columnar radiation source structure in height is greatly reduced can be formed in a height direction perpendicular to the reference ground 12, thereby facilitating further miniaturization design of the half-wave folded-back type directional microwave detection antenna 10.

Further, the half-wave oscillator 11 has a feeding point 110, wherein the feeding point 110 is close to one end of the half-wave oscillator 11, and the end close to the feeding point 110 of the half-wave oscillator 11 is named as a feeding end 111 of the half-wave oscillator 11, wherein when the half-wave oscillator 11 is fed by a corresponding excitation signal at the feeding point 110, the two ends of the half-wave oscillator 11 can be coupled to each other and have relatively high coupling energy based on a physical length setting of the half-wave oscillator 11 within a 20% error and a structural configuration of the two ends of the half-wave oscillator 11 close to each other within a distance range of 0.4mm or more and 3.2mm or less.

Preferably, the other end of the half-wave oscillator 11 is disposed away from the reference ground 12 with respect to the feeding end 111, i.e. the distance between the other end of the half-wave oscillator 11 and the reference ground 12 is greater than the distance between the feeding terminal 111 and the reference ground 12, thus, when the feeding point 110 feeds the half-wave oscillator 11, a step distribution with a current density from high to low can be formed in the half-wave oscillator 11 in the direction from the other end of the half-wave oscillator 11 to the reference ground 12, thereby contributing to further reducing the energy directly coupled between both ends of the half-wave vibrator 11 and the reference ground 12, and a vector of an electric field formed between both end portions of the half-wave vibrator 11 and an electric field between both end portions of the half-wave vibrator 11 and the reference ground 12 is superimposed, and further improve the gain of the half-wave reverse-folded directional microwave detection antenna 10 while generating an obvious resonance frequency point.

In particular, based on the structure of the half-wave folded-back directional microwave detecting antenna 10, the half-wave oscillator 11 is disposed on the same plane, and the plane defined by the half-wave oscillator 11 is perpendicular to the reference ground 12 in a state where the distance between the feeding end 111 of the half-wave oscillator 11 and the reference ground 12 is smaller than the distance between the other end of the half-wave oscillator 11 and the reference ground 12. In this embodiment of the present invention, the half-wave oscillator 11 is folded back and extends from the end opposite to the feeding end 111 in the direction parallel to the reference ground 12, and towards the reference ground 12 and in the opposite direction parallel to the reference ground 12, and has two coupling sections 112 extending from both ends of the half-wave oscillator 11 in the same direction and a connecting section 113 connecting between the two coupling sections 112 in the direction perpendicular to the reference ground 12.

In other words, the half-wave vibrator 11 has two coupling sections 112 extending from both ends thereof and the connection section 113 connected between the two coupling sections 112, wherein the two coupling sections 112 extend from both ends of the half-wave vibrator 11 to both ends of the connecting section 113 in the same direction, wherein two of the coupling sections 112 extend from both ends of the half-wave vibrator 11 in the same direction in a direction parallel to the reference ground 12, wherein the connecting section 113 is connected to the two coupling sections 112 in a direction perpendicular to the reference ground 12, and the distance between the coupling section 112 where the feeding end 111 is located and the reference ground 12 is smaller than the distance between the other coupling section 112 and the reference ground 12, in particular in the present invention, wherein the coupling section 112 near the reference ground 12 has a distance of 3.5mm from the reference ground 12 within an error of 20%.

Further, the half-wave folded directional microwave detecting antenna 10 includes feeding lines 13 corresponding to the number of the half-wave oscillators 11, wherein one end of the feeding line 13 is electrically connected to the feeding end 111 of the half-wave oscillator 11, and the other end of the feeding line 13 is electrically coupled to a corresponding excitation source to receive an excitation signal.

In particular, in this embodiment of the present invention, the feeder line 13 and the half-wave resonator 11 are designed integrally, that is, the feeder line 13 extends integrally to the half-wave resonator 11 from the feeding end 111 of the half-wave resonator 11, and the structure of the half-wave resonator 11 is defined in the description of "the half-wave resonator 11 has a physical length of 26mm within a tolerance of 20%" and "both ends of the half-wave resonator 11 are close to each other within a distance range of 0.4mm or more and 3.2mm or less" and "the half-wave resonator 11 is disposed at a distance from the reference ground 12 in a state where the coupling section 112 close to the reference ground 12 and the reference ground 12 have a distance of 3.5mm within a tolerance of 20%", and in a state where the feeding end 111 of the half-wave resonator 11 is electrically connected to the feeding end 13, the definition of the feeding end 111 of the half-wave resonator 11 may not be unique, that is, there may be a plurality of positions of the feeding terminal 111 on the half-wave oscillator 11 that satisfy the above description. Therefore, it is worth mentioning that in a state that the feeder line 13 is electrically connected to the feeding end 111 of the half-wave oscillator 11, the other end of the half-wave oscillator 11 is taken as a definite end, and when the feeding end 111 satisfying the above description exists on the half-wave oscillator 11, the two ends of the half-wave oscillator 11 can be coupled with each other and have relatively high coupling energy, so that an obvious resonant frequency point can be generated based on the coupling between the two ends of the half-wave oscillator 11 while forming the directional radiation of the half-wave folded directional microwave detection antenna 10.

Preferably, the feeder line 13 is set within a 20% error and has a physical length of 12.9mm or less, so as to reduce the coupling between the feeder line 13 and the reference ground 12, thereby being beneficial to ensuring the electric field energy distribution formed by the coupling manner between the half-wave oscillator 11 itself and the reference ground 12, which is different from that of the existing microwave detector with a cylindrical radiation source structure, further being beneficial to forming directional radiation and generating an obvious resonance frequency point, and simultaneously improving the gain of the half-wave folded directional microwave detection antenna 10 and avoiding forming a detection dead zone in the directional radiation direction.

Further, the power feed line 13 is provided with a physical length of 0.4mm or more within a tolerance of 20%, so that a state in which the half-wave vibrator 11 is provided with both ends spaced from the reference ground 12 in a distance range of 0.4mm or more is formed in a state in which it can be physically supported by the power feed line 13 with the half-wave vibrator 11 in a medium space of air.

Specifically, in this embodiment of the present invention, wherein the feeding point 110 is located at the feeding end 111, wherein the feeding line 13 has a thickened section 131 and a pin section 132, wherein the thickened section 131 is electrically connected to the feeding point 110 of the half-wave oscillator 11, and specifically the thickened section 131 extends from the end of the feeding point 110 of the half-wave oscillator 11 in a direction toward the reference ground 12 in a state where the end is electrically connected to the feeding point, wherein the reference ground 12 is provided with an isolation hole 121, and the pin section 132 extends from the other end of the thickened section 131 and penetrates through the reference ground 12 via the isolation hole 121 to form an isolation gap 1211 with the reference ground 12 to be electrically isolated from the reference ground 12 in a physical structure, so as to access a state of the feeding line 13 coupled with a corresponding excitation circuit feed at an end of the pin section 132 passing through the reference ground 12 to an excitation signal, through the electrical connection between the feeder line 13 and the feeding terminal 111 of the half-wave oscillator 11 and the physical support of the half-wave oscillator 11, a state is formed in which the half-wave oscillator 11 is fed at the feeding terminal 111 and is disposed at an interval from the reference ground 12.

It is worth mentioning that, the half-wave dipole 11 is designed in a columnar strip form, wherein the thickened section 131 of the feeder line 13 is thickened with respect to the half-wave dipole 11 designed in the columnar strip form, so as to tune the resonant frequency point of the half-wave folded-back directional microwave detection antenna 10 to match the corresponding working frequency based on the thickened section 13, and simultaneously improve the supporting strength of the feeder line 13 to the half-wave dipole 11, so as to improve the structural stability of the half-wave folded-back directional microwave detection antenna 10.

Further, wherein the directional microwave detecting antenna of half-wave inflection formula 10 is further provided with at least one minor matters load 15, wherein minor matters load 15 is loaded in half-wave oscillator 11, in order to be based on the length setting of minor matters load 15 with in the load position debugging of half-wave oscillator 11, the resonance frequency point of the directional microwave detecting antenna of half-wave inflection formula 10 can be debugged in order to match with corresponding work frequency point, specifically in this embodiment of the utility model, wherein one end of minor matters load 15 by electric connection in the partial deviation of half-wave oscillator 11 the position of feed end 111, with the partial deviation of half-wave oscillator 11 the position of feed end 111 is loaded in half-wave oscillator 11.

Further, the half-wave folded-back directional microwave detection antenna 10 includes a limit support seat 16, wherein the limit support seat 16 is designed to support and/or fix the half-wave oscillator 11, so that based on the corresponding shape design of the limit support seat 16, in a state where the half-wave oscillator 11 is supported and/or fixed by the limit support seat 16, loss of the half-wave folded-back directional microwave detection antenna 10 due to contact between the limit support seat 16 and the half-wave oscillator 11 and an influence of the limit support seat 16 on a medium between the half-wave oscillator 11 and the reference ground 12 can be reduced, so as to ensure performance stability of the half-wave folded-back directional microwave detection antenna 10 while ensuring structural stability of the half-wave folded-back directional microwave detection antenna 10.

Specifically, the limit support base 16 includes a base 163, and a clamping limit portion 161 and a half-wave oscillator support post 162 which extend from the base 163 in the same direction, wherein the clamping limit portion 161 is configured and adapted to form a support and a limit for the half-wave oscillator 11 in a manner of clamping the feed line 13, wherein in a state where the feed line 13 is clamped by the clamping limit portion 161, an end of the half-wave oscillator support post 162 is opposite to the half-wave oscillator 11 to form a support for the coupling section 112 of the half-wave oscillator 11 close to the reference ground 12 in an extending direction of the half-wave oscillator support post 162, and further form a support and a fixation for the half-wave oscillator 11 in a state where the base 163 is fixed.

It is worth mentioning that, in a state where the feeder line 13 is clamped by the clamping and limiting portion 161, the half-wave oscillator 11 integrally extends from the feeder line 13 and can be fixed by the fixation of the base 163, so as to avoid direct contact between the clamping and limiting portion 161 and the half-wave oscillator 11 and influence on the medium between the half-wave oscillator 11 and the reference ground 12, and correspondingly reduce loss caused by contact between the limiting and supporting seat 16 and the half-wave oscillator 11 and influence of the limiting and supporting seat 16 on the medium between the half-wave oscillator 11 and the reference ground 12.

Referring to the utility model discloses a figure 2C and figure 2D of the description attached drawing, based on above-mentioned structural design half-wave inflection formula directional microwave detection antenna 10 with reference ground 12 to the back radiation of border is obviously weakened and has good directional radiation characteristic to have in directional radiation direction and reach 6.8dB 'S radiation gain, simultaneously the S11 curve of half-wave inflection formula directional microwave detection antenna 10 presents obvious resonance frequency point near 5.8GHz and can with 5.8 GHz' S ISM working frequency channel phase-match, correspond half-wave inflection formula directional microwave detection antenna 10 has good anti-interference ability, that is to say, half-wave inflection formula directional microwave detection antenna 10 has good performance and good structural stability.

Further, in view of the influence on the medium environment where the half-wave oscillator 11 is located when the limit support base 16 supports and/or fixes the half-wave oscillator 11, the adjustment and exploration of the form of the limit support base 16 and the contact position of the limit support base 16 and the half-wave oscillator 11 verify that directional radiation can be formed and an obvious resonant frequency point can be generated, and a detection dead zone in the directional radiation direction is avoided, and the half-wave backfolding type directional microwave detection antenna 10 has a stable structure.

That is to say, the design of limit support base 16 is being guaranteed right when the structural stability of half-wave inflection formula directional microwave detection antenna 10 can play effective help, still must compromise half-wave inflection formula directional microwave detection antenna 10's performance, consequently the utility model discloses it is further right the form of limit support base 16 reaches limit support base 16 with the contact position of half-wave oscillator 11 adjusts to obtain to have good performance and good structural stability half-wave inflection formula directional microwave detection antenna 10.

Referring further to fig. 3A of the drawings of the specification of the present invention, based on the schematic diagram of fig. 2B, a preferred tuning structure of the half-wave folded directional microwave detecting antenna 10 is schematic diagram, specifically, in the schematic diagram of fig. 2B of the structure of the half-wave folded directional microwave detecting antenna 10, the half-wave oscillator supporting pillar 162 of the limiting supporting seat 16 only supports the coupling section 112 of the half-wave oscillator 11 close to the reference ground 12, so that in the production and use processes of the half-wave folded directional microwave detecting antenna 10, the positional relationship between the two coupling sections 112 of the half-wave oscillator 11 is only maintained by the connecting section 113, and therefore, inevitably, the coupling section 112 far away from the reference ground 12 is easy to deform to affect the performance of the half-wave folded directional microwave detecting antenna 10. Therefore, further in this preferred tuning structure shown in fig. 3A, the configuration of the position-limiting support base 16 is optimized to improve the structural stability of the half-wave folded directional microwave detecting antenna 10, specifically, wherein the half-wave oscillator support column 162 of the position-limiting support base 16 is further extended to form a support for the coupling section 112 away from the reference ground 12.

Specifically, in this preferred tuning structure, the clamping limiting portion 161 has a limiting hole 1611, the clamping limiting portion 161 clamps the feeder line 13 in a state where the feeder line 13 passes through the limiting hole 1611, wherein the half-wave oscillator support column 162 has two support channels 1621, wherein in a state where the feeder line 13 is clamped by the clamping limiting portion 161, the half-wave oscillator 11 is supported and fixed by the half-wave oscillator support column 162 in a state where both of the coupling sections 112 thereof simultaneously pass through both of the support channels 1621, so that in a state where the base 163 is fixed, the limiting support base 16 forms support and fixation for the half-wave oscillator 11.

In particular, the two coupling sections 112 of the half-wave oscillator 11 are respectively supported and fixed by the two supporting channels 1621 of the half-wave oscillator support column 162, so that the positional relationship between the two coupling sections 162 is fixed based on the positional relationship between the two supporting channels 1621 of the half-wave oscillator support column 162, thereby reducing the probability of deformation of the half-wave oscillator 11 during production and use, and accordingly ensuring that the half-wave oscillator 11 has a stable structure.

Preferably, in this embodiment of the present invention, two of the supporting channels 1621 have a structure suitable for being attached to the half-wave resonator 11 and correspondingly have a hole shape, so as to form a coating on the half-wave resonator 11 at the periphery of the half-wave resonator. It is understood that, in some embodiments of the present invention, the supporting channel 1621 may be implemented in a groove shape to form a support for the half-wave vibrator 11 in a state that the half-wave vibrator 11 passes through the supporting channel 1621 of the groove shape.

Referring to fig. 3B and 3C specifically, the half-wave folded-back directional microwave detecting antenna 10 designed based on the above structure has a radiation gain as high as 6.8dB in the directional radiation direction, and at the same time, the S11 curve of the half-wave folded-back directional microwave detecting antenna 10 presents an obvious resonant frequency point near 5.8GHz and can be matched with the ISM working frequency band of 5.8GHz, and the S11 curve of the half-wave folded-back directional microwave detecting antenna 10 has a loss as low as-15 dB at the resonant frequency point and has a narrower frequency bandwidth, so that the half-wave folded-back directional microwave detecting antenna 10 has excellent anti-interference performance, that is, the preferable tuning structure of the half-wave folded-back directional microwave detecting antenna 10 shown in fig. 3A ensures that the excellent performance of the half-wave folded-back directional microwave detecting antenna 10 is not affected while the structural stability of the half-wave folded-back directional microwave detecting antenna 10 is improved, the structural stability and the performance stability of the half-wave reverse-folding type directional microwave detection antenna 10 are reasonably considered, and the practicability of the half-wave reverse-folding type directional microwave detection antenna 10 is comprehensively improved.

In a search, referring further to fig. 4A of the drawings of the specification of the present invention, a further tuning search structure based on the preferred tuning structure of the half-wave folded-back directional microwave detecting antenna 10 shown in fig. 3A is illustrated, wherein the overall performance of the half-wave folded-back directional microwave detecting antenna 10 is further verified based on the adjustment of the contact position of the half-wave oscillator supporting pillar 162 and the half-wave oscillator 11, and particularly in this tuning search structure shown in fig. 4A, the contact position of the half-wave oscillator supporting pillar 162 and the half-wave oscillator 11 is adjusted in a manner of being away from both ends of the half-wave oscillator 11 with respect to the preferred tuning structure shown in fig. 3A.

Comparing fig. 3B, 4B, 3C and 4C, it is found that, based on the above adjustment, the half-wave folded-back directional microwave detecting antenna 10 still maintains excellent performance, that is, the contact position of the half-wave oscillator support column 162 and the half-wave oscillator 11 is far away from the two ends of the half-wave oscillator 11, which is not significantly optimized for the performance of the half-wave folded-back directional microwave detecting antenna 10, and based on the structural relationship that the aforementioned feeder line 13 is electrically connected to the feeding end 111 of the half-wave oscillator 11, it can be known that, when the contact position of the half-wave oscillator support column 162 and the half-wave oscillator 11 is far away from the two ends of the half-wave oscillator 11, the distance between the half-wave oscillator support column 162 and the clamping limiting portion 161 needs to be extended, and therefore the size of the base 163 needs to be correspondingly increased, and therefore, in the tuning structure shown in fig. 4A, the performance of the half-wave folded-back directional microwave detecting antenna 10 is not optimized, but the material consumption for manufacturing the limit supporting seat 16 is additionally increased, which is not favorable for controlling the production cost of the half-wave folded-back directional microwave detecting antenna 10.

Therefore, it is preferable that the contact position of the half-wave oscillator support pillar 162 and the half-wave oscillator 11 is the preferable tuning structure of the half-wave folded directional microwave detection antenna 10 illustrated in fig. 3A, that is, the contact position of the half-wave oscillator support pillar 162 and the half-wave oscillator 11 is the middle position of the coupling section 112 close to the reference ground 12, that is, the half-wave oscillator support pillar 162 supports the half-wave oscillator 11 at the middle position of the coupling section 112 close to the reference ground 12, so as to be beneficial to controlling the production cost of the half-wave folded directional microwave detection antenna 10 while taking into account the structural stability and the performance stability of the half-wave folded directional microwave detection antenna 10.

Further explore ground, further refer to the utility model discloses a fig. 5A of the specification attached drawing, the structure is explored to the further tuning based on the preferred tuning structure of half-wave inflection formula directional microwave detection antenna 10 that fig. 3A shows, wherein based on to the form adjustment of centre gripping spacing portion 161, further verifies the wholeness ability of half-wave inflection formula directional microwave detection antenna 10, specifically in this tuning structure, centre gripping spacing portion 161 is further extended in order to contact half-wave oscillator 11.

Wherein the thickened section 131 of the feeder line 13 is entirely covered by the clamping position-limiting portion 161 based on the clamping position-limiting portion 161 being further extended, in order to contribute to a certain increase in the structural stability of the feed line 13, it has been found, however, that, in comparison with fig. 3B, 5B, 3C and 5C, the loss and second harmonic suppression capability of the half-wave folded-back directional microwave detection antenna 10 based on the tuning exploration structure described above is negatively optimized with respect to the preferred tuning structure shown in fig. 3A, weakening the performance of the half-wave folded-back directional microwave detection antenna 10, in addition, the further extension of the clamping position-limiting portion 161 also increases the production material consumption, so that the shape of the position-limiting support base 16 shown in fig. 3A is an optimal shape that fully considers the structural stability, performance stability and production cost of the half-wave folded directional microwave detecting antenna 10.

Referring further to fig. 6A of the drawings of the specification of the present invention, under the configuration of the limit support base 16 being fixed, based on the debugging of the branch load 15 on the load position of the half-wave oscillator 11, the overall performance of the half-wave folded-back directional microwave detecting antenna 10 is further explored and verified, specifically, in the tuning exploration structure illustrated in fig. 6A, the branch load 15 on the load position of the half-wave oscillator 11 is set far away from the feeding end 111 relative to the preferred tuning structure illustrated in fig. 3A, specifically, the branch load 15 and the connection section 113 are relatively loaded on the coupling section 112 of the half-wave oscillator 11 close to the reference ground 12, as compared with fig. 3B, 6B, 3C and 6C, it is found that the loss of the half-wave folded-back directional microwave detecting antenna 10 is increased after being explored and adjusted, the second harmonic loss is reduced, that is, the harmonic suppression capability is reduced, and negative optimization occurs with respect to the preferred tuning structure shown in fig. 3A, so based on the above exploration and verification, in the preferred tuning structure of the half-wave folded-back directional microwave detecting antenna 10 shown in fig. 3A, the structural stability, the performance stability, and the production cost of the half-wave folded-back directional microwave detecting antenna 10 are comprehensively considered, and the antenna has excellent practical performance.

In detail, referring to fig. 7A to 7D of the drawings of the present invention, a tuning example is performed in an ISM operating band of 5.8GHz, and specific dimensions of the half-wave folded directional microwave detecting antenna 10 based on the above preferred tuning structure are disclosed, specifically, under a 5% error range, wherein the coupling section 112 of the half-wave oscillator 11 far away from the reference ground 12 has a physical length of 14.3mm, the coupling section 112 near the reference ground 12 has a physical length of 12.15mm, and the connecting section 113 has a physical length of 1.2 mm; and under a tolerance range of 20%, the half-wave vibrator 11 has a width and a thickness of 0.6mm, wherein the thickened section 131 of the power feeding line 13 has a physical length of 4mm, wherein each end of the two coupling sections 112 and each end of the connecting section 113 of the half-wave vibrator 11 are designed in a semicircular or arc shape, and a connecting position of the power feeding line 13 and the half-wave vibrator 11 and a connecting position of the minor matters load 15 and the half-wave vibrator 11 are also designed in a semicircular or arc shape.

Further, the stub load 15 has a width and a thickness equal to those of the half-wave oscillator 11 within a tolerance range of 20%, wherein a distance along the half-wave oscillator 11 between a load position of the half-wave oscillator 11 and the feeder line 13 of the stub load 15 is 9.53mm, a distance along the half-wave oscillator 11 between an end of the coupling section 112 close to the reference ground 12 and opposite to the feeding end 111 is 2.02mm, a position close to the reference ground 12 of the half-wave oscillator 11 is a bottom of the half-wave oscillator 11, a position far from the reference ground 12 is a top of the half-wave oscillator 11, and a length of a vertical connection line between an end of the stub load 15 close to the reference ground 12 and the top of the half-wave oscillator 11 is 5 mm.

Further, with a tolerance of 20%, wherein the pedestal 163 has a height of 0.6mm, so as to avoid affecting the performance of the half-wave reverse-folded directional microwave detecting antenna 10 and avoiding increasing the manufacturing consumables while ensuring the fixing stability of the limit support base 16, wherein the position-limiting support base 16 has a height of 1.2mm at the position of the clamping position-limiting portion 161, the half-wave vibrator support column 162 has a thickness of 0.6mm, wherein the length direction of the limit support seat 16 is the same as the extending direction of the two coupling sections 112, wherein the limit support base 16 has a length of 7.75mm, and the half-wave oscillator support column 162 has a length of 0.6mm, namely, the thickness of the support pillar 162 corresponding to the half-wave oscillator is 0.6mm, wherein the height of the limit support seat 16 in the support pillar 162 corresponding to the half-wave oscillator is 6.3mm, so that the half-wave oscillator support posts 162 can form a support for the two coupling sections 112.

It is worth mentioning that the two ends of the half-wave oscillator 11 can be coupled with each other, and the electrical parameter requirement of the reference ground 12 is reduced correspondingly under the precondition of forming directional radiation, that is, the reference ground 12 allows other components to be arranged without affecting the normal operation of the half-wave folded directional microwave detection antenna 10, so as to facilitate the arrangement of the reference ground 12 through a circuit main board carrying corresponding components, and form the non-modular integrated arrangement of the half-wave folded directional microwave detection antenna 10 in the corresponding doppler microwave detection device, thereby reducing the size of the doppler microwave detection device, and simultaneously facilitating the simplification of the production process of the doppler microwave detection device and the reduction of the production consumables of the doppler microwave detection device.

Specifically, refer to the utility model discloses a figure 8 of the description drawings is shown, based on half-wave inflection formula directional microwave detection antenna 10's non-modular design, half-wave inflection formula directional microwave detection antenna 10 is shown in corresponding doppler microwave detection device's non-modular integrated structure, wherein half-wave inflection formula directional microwave detection antenna 10 with non-modular form integrated set up in doppler microwave detection device, in order to form doppler microwave detection device's antenna structure remove modular design, reduce doppler microwave detection device's size is simultaneously, is favorable to simplifying doppler microwave detection device's production technology and reduction doppler microwave detection device's production consumptive material, therefore can reduce doppler microwave detection device's manufacturing cost.

In detail, the doppler microwave detecting device includes the half-wave folded directional microwave detecting antenna 10 and the main circuit 20, wherein the half-wave folded directional microwave detecting antenna 10 includes a circuit board 14, wherein the circuit board 14 carries the main circuit 20, the reference ground 12 of the half-wave folded directional microwave detecting antenna 10 is carried on the circuit board 14 in a copper-clad layer state, specifically, in this embodiment of the present invention, wherein the reference ground 12 and the main circuit 20 are respectively carried on two sides of the circuit board 14, wherein the half-wave vibrator 11 of the half-wave folded directional microwave detecting antenna 10 is disposed in a space corresponding to one side of the circuit board 14 carrying the reference ground 12, and the pin section 132 of the feeder line 13 penetrates the reference ground 12 through the isolation hole 121 and is coupled to the main circuit 20 in an electrical connection state Is fixed to the circuit substrate 14 so as to form a state in which the half-wave folded-back directional microwave detecting antenna 10 is integrally disposed in the doppler microwave detecting device in a non-modular form. It can be understood that, in some embodiments of the present invention, the half-wave oscillator 11 of the half-wave folded directional microwave detecting antenna 10 may be disposed in the space corresponding to the surface of the circuit substrate 14 opposite to the surface bearing the reference ground 12, that is, the circuit substrate 14 is spaced between the half-wave oscillator 11 and the reference ground 12, which is not limited by the present invention.

In particular, the base 163 is fixed to the circuit substrate 14, such that the position-limiting support base 16 forms a support and a fixation for the half-wave oscillator 11, wherein the base 163 of the position-limiting support base 16 is fixed to the circuit substrate 14 by a dispensing process, wherein the base 163 has two side wings 1631, the two side wings 1631 extend from two sides of the base 163 in the width direction of the position-limiting support base 16 at the position of the half-wave oscillator support column 162, respectively, so as to facilitate the position location of the position-limiting support base 16 on the circuit substrate 14, and facilitate picking and placing the position-limiting support base 16 to the circuit substrate 14 based on corresponding mechanical automation, so as to facilitate the automated production of the half-wave folded directional microwave detecting antenna 10, in particular, wherein the two side wings 1631 extend in a non-contact manner with the circuit substrate 14, this creates a gap between the side wings 1631 and the circuit substrate 14 to facilitate the corresponding dispensing of the base 163.

It should be noted that, based on the purpose of reducing the manufacturing consumables of the limit support seat 16, in some embodiments of the present invention, the two side wings 1631 may not be disposed, and the present invention is not limited to this.

Referring to fig. 9 of the drawings of the present application, based on the optimization of the stability and consistency of the preferred tuning structure of the half-wave folded directional microwave detecting antenna 10 in the production process as illustrated in fig. 3A, a half-wave oscillator braid of the half-wave folded directional microwave detecting antenna 10 in the production process is illustrated, wherein a plurality of half-wave oscillators 11 and corresponding feeder lines 13 are integrally formed by stamping process and the connecting section 113 of the half-wave oscillators 11 is connected to a metal strip 17 to form the half-wave oscillator braid, i.e. the half-wave oscillator braid comprises at least one half-wave oscillator 11, one metal strip 17 and corresponding number of feeder lines 13, wherein the half-wave oscillator 11 is disposed with a physical length of 26mm in a 20% error, and has two coupling sections 112 extending in parallel in a direction close to the metal strip 17 with both ends of the half-wave oscillator 11 as ends, and vertically connected to two A connection section 113 of the coupling section 112, a distance between two ends of the half-wave oscillator 11 is greater than or equal to 0.4mm and less than or equal to 3.2mm within a tolerance of 20%, wherein the half-wave oscillator 11 has a feeding point 110, the feeding point 110 is biased to one end of the half-wave oscillator 11 to be close to the one end, wherein one end of the feeding line 13 is electrically connected to the feeding point 110 of the half-wave oscillator 11, and has a physical length greater than or equal to 0.4mm and less than or equal to 12.9mm within a tolerance of 20%, wherein the metal strap 17 includes a connection pin 171, and the connection pin 171 extends from the metal strap 1 to a middle position of the connection section 113 of the half-wave oscillator 11, so that the half-wave oscillator 11 is connected to the metal strap 17 through the connection pin 171.

Preferably, the position of the connection pin 171 connected to the half-wave oscillator 11 is designed to be narrowed, so as to facilitate disconnection between the connection pin 171 and the half-wave oscillator 11 based on bending or mechanical impact to separate the half-wave oscillator 11 from the metal strip 16, thereby facilitating automation of production and improving production efficiency of the half-wave folded directional microwave detection antenna 10.

In particular, the half-wave oscillator 11 is connected with the metal strap 17 through the connecting pin 171, so that during the production process, the position of the half-wave oscillator 11 is fixed by the metal strap 17, thereby facilitating the formation of the position relationship between the position limit support base 16 and the half-wave oscillator 11 and the feeder line 13 during the subsequent production process, and specifically, the position limit support base 16 is formed on the half-wave oscillator braid in the injection molding process, thereby forming the position relationship between the position limit support base 16 and the half-wave oscillator 11 and the feeder line 13, and the position limit support base 16 is formed on the half-wave oscillator 11 and the feeder line 13 in the injection molding process, so that the two support channels 1621 of the half-wave oscillator support column 162 have a structural shape suitable for being attached to the two coupling sections 112, so as to form a cladding of the two coupling sections 112 at the periphery of the two coupling sections 112, meanwhile, the limiting hole 1611 of the clamping limiting part 161 has a structure suitable for being attached to the feeder line 13, so that the feeder line 13 is coated on the periphery of the feeder line 13, and the supporting and fixing effects of the limiting support base 16 on the half-wave oscillator 11 are improved.

It is worth mentioning that, in the half-wave folded-back directional microwave detecting antenna 10, an end of the thickened section 131 of the feeder line 13 opposite to the feeding end 111 and the circuit substrate 14 are preferably disposed with a certain gap, that is, the thickened section 131 of the feeder line 13 extends from the feeding end 111 of the half-wave oscillator 11 to the direction of the reference ground 12 and keeps a certain gap with the circuit substrate 14, so that in the process of forming the limit support base 16 by glue injection, plastic can be prevented from leaking out of a corresponding mold, thereby facilitating automatic production of the half-wave folded-back directional microwave detecting antenna 10.

In particular, the half-wave oscillator 11 and the feeder line 13 are formed by an injection molding process based on the limit support base 16, so that the connection between the connection pin 171 and the half-wave oscillator 11 is broken through bending or mechanical impact in the subsequent production process, the half-wave oscillator 11 is separated from the metal band 16, the bottom of the limit support base 16 is automatically sucked through a corresponding suction cup of a chip mounter to pick and place the limit support base 16, and meanwhile, the half-wave oscillator 11 and the feeder line 13 which have a fixed position relation with the limit support base 16 are picked and placed, so that the corresponding production process of the half-wave folded directional microwave detection antenna 10 is completed, the half-wave oscillator 11 is prevented from being deformed due to direct contact with the half-wave oscillator 11 in the batch production process, and thus the automatic production of the half-wave folded directional microwave detection antenna 10 is facilitated, the production yield of the half-wave reverse-folding directional microwave detection antenna 10 is improved while the production efficiency of the half-wave reverse-folding directional microwave detection antenna 10 is improved.

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 (11)

1. Directional microwave detection antenna of half-wave inflection formula, its characterized in that includes:

at least one half-wave oscillator, wherein the half-wave folded directional microwave detection antenna is configured to operate in a C-band, wherein the half-wave oscillator has a physical length of 26mm within a 20% error, the half-wave oscillator is folded back to form a state in which a distance between two ends of the half-wave oscillator is greater than or equal to 0.4mm and less than or equal to 3.2mm within a 20% error, wherein the half-wave oscillator has a feeding point biased to be close to one end of the half-wave oscillator, and the end is named as a feeding end of the half-wave oscillator correspondingly, wherein in a state in which the half-wave oscillator is fed by being connected to a corresponding excitation signal at the feeding point, two ends of the half-wave oscillator can form a phase difference tending to reverse phase and are coupled with each other;

the half-wave oscillator is spaced from the reference ground in a state that the distance between the feeding end and the reference ground is less than or equal to the distance between the other end of the half-wave oscillator and the reference ground;

a feeder line, wherein one end of the feeder line is electrically connected to the feeding point of the half-wave oscillator, so that when the other end of the feeder line is electrically coupled with the corresponding excitation source to access the excitation signal, the feeder line feeds the half-wave oscillator at the feeding point; and

a spacing supporting seat, wherein the spacing supporting seat includes a base and a centre gripping spacing portion and a half-wave oscillator support column that certainly the base syntropy extends, wherein the spacing portion of centre gripping has a spacing hole, the spacing portion of centre gripping with the feeder line passes the state centre gripping in spacing hole, wherein the half-wave oscillator support column has two support channels, wherein in the state that the feeder line is by the spacing portion centre gripping of centre gripping, the half-wave oscillator is supported by the half-wave oscillator support column with the state that passes two simultaneously support channels, thereby in the state that the base is fixed, spacing supporting seat forms the support and the fixing of half-wave oscillator.

2. The half-wave folded-back directional microwave detection antenna according to claim 1, wherein the half-wave dipole has two coupling sections extending in the same direction from both ends thereof in a direction parallel to the reference ground and a connection section connected between the two coupling sections in a direction perpendicular to the reference ground, wherein the half-wave folded-back directional microwave detection antenna includes a stub load extending from the coupling section near the reference ground in a direction toward the reference ground.

3. The half-wave folded directional microwave detection antenna of claim 2, wherein the half-wave dipole support column supports the half-wave dipole at a central location of the coupling section near the reference ground.

4. The half-wave folded directional microwave detection antenna according to claim 3, wherein the two support channels have a structural shape suitable for being attached to the half-wave oscillator so as to form a coating on the half-wave oscillator at the periphery of the half-wave oscillator.

5. The half-wave folded directional microwave detection antenna of claim 3, wherein the half-wave folded directional microwave detection antenna comprises a circuit substrate, wherein the ground reference is carried on the circuit substrate in a copper clad layer, and the base is fixed to the circuit substrate.

6. The half-wave folded directional microwave detecting antenna according to claim 5, wherein the base has two side wings, and the two side wings extend from two sides of the base in a non-contact manner in a width direction of the position-limiting support base at the position of the half-wave vibrator support column.

7. The half-wave folded directional microwave detection antenna according to claim 5, wherein the coupled section away from the reference ground has a physical length of 14.3mm, the coupled section close to the reference ground has a physical length of 12.15mm, and the connection section has a physical length of 1.2mm within an error of 5%; and within a 20% error, the half-wave vibrator has a width and a thickness of 0.6mm, wherein the feeding point is located at the feeding end, wherein a distance along the half-wave vibrator between a load position of the stub loaded on the half-wave vibrator and the feeding line is 9.53mm, a distance along the half-wave vibrator between an end of the coupling section opposite to the feeding end, which is close to the reference ground, is 2.02mm, wherein a length of a vertical connection line between an end of the stub loaded, which is close to the reference ground, and a top of the half-wave vibrator is 5mm, and wherein the coupling section, which is close to the reference ground, has a distance of 3.5mm within a 20% error from the reference ground.

8. The half-wave folded directional microwave detection antenna of claim 7, wherein the base has a height of 0.6mm, the position-limiting support base has a height of 1.2mm at the clamping position-limiting portion, and the half-wave vibrator support column has a thickness of 0.6mm within a tolerance of 20%.

9. The half-wave folded directional microwave detecting antenna according to claim 8, wherein the feeder line has a thickened section and a pin section, wherein the thickened section extends from one end of the thickened section in a direction toward the reference ground in a state where the end is electrically connected to the feeding point of the half-wave vibrator, wherein the pin section extends from the other end of the thickened section in a direction toward the reference ground and is fixed to the circuit substrate and electrically coupled with the corresponding excitation source, wherein the thickened section has a physical length of 4mm within an error range of 20%.

10. The half-wave folded directional microwave detection antenna of claim 1, wherein the half-wave folded directional microwave detection antenna is configured to operate in a frequency range of 5.8GHz ± 75MHz in the C-band.

11. Half-wave oscillator braid, its characterized in that includes:

a metal strip;

at least one half-wave resonator, wherein the half-wave resonator has a physical length of 26mm within a tolerance of 20%, and has two coupling sections extending in parallel in a direction toward the metal strap with both ends of the half-wave resonator as ends, and a connection section perpendicularly connected to the two coupling sections, a distance between both ends of the half-wave resonator is greater than or equal to 0.4mm and less than or equal to 3.2mm within a tolerance of 20%, wherein the half-wave resonator has a feeding point biased toward one end of the half-wave resonator to be close to the one end, wherein both ends of the half-wave resonator are coupled to each other so as to form a phase difference tending to reverse phase in a state where the half-wave resonator is fed by being connected to a corresponding excitation signal at the feeding point, wherein the metal strap includes a connection pin extending from the metal strap to a middle position of the connection section, so that the half-wave oscillator is connected with the metal strip through the connecting pin;

feeder lines corresponding to the number of the half-wave oscillators, wherein one ends of the feeder lines are electrically connected to the feeding points of the half-wave oscillators; and

the limiting support seat is formed on the half-wave oscillator and the feeder line and provided with a base, a clamping limiting portion and a half-wave oscillator support column, the clamping limiting portion and the half-wave oscillator support column extend in the same direction from the base, the clamping limiting portion is provided with a limiting hole attached to the structural form of the feeder line so as to form a coating on the feeder line at the periphery of the feeder line, the half-wave oscillator support column is provided with two supporting channels attached to the structural form of the two coupling sections of the half-wave oscillator so as to form a coating on the two coupling sections at the periphery of the two coupling sections, and therefore the limiting support seat supports and fixes the half-wave oscillator in a fixed state of the base.

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