CN216120757U - Transmit-receive separated microwave detection antenna - Google Patents
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- CN216120757U CN216120757U CN202122504959.7U CN202122504959U CN216120757U CN 216120757 U CN216120757 U CN 216120757U CN 202122504959 U CN202122504959 U CN 202122504959U CN 216120757 U CN216120757 U CN 216120757U
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Abstract
The utility model relates to the field of microwave detection, in particular to a transmitting-receiving separated microwave detection antenna, which comprises a plane radiation source, a columnar radiation source and a reference ground, wherein the plane radiation source is arranged on the reference ground at intervals, the columnar radiation source is arranged in a mode of being perpendicular to the plane radiation source and forms a radiation gap with the reference ground, and the transmitting-receiving separated microwave detection antenna can keep the isolation degree between the plane radiation source and the columnar radiation source and can ensure that the arrangement between the plane radiation source and the columnar radiation source occupies a smaller area, thereby being beneficial to the installation and application of the transmitting-receiving separated microwave detection antenna.
Description
Technical Field
The utility model relates to the field of microwave detection, in particular to a transmitting-receiving separated microwave detection antenna.
Background
An antenna is a transducer that converts a guided wave propagating on a transmission line into an electromagnetic wave propagating through an unbounded medium or vice versa, and is therefore widely used in radio devices for communication, broadcasting, television, radar, navigation, and the like, for transmitting or receiving an electromagnetic wave. Since the antenna comes into the market, the antenna is suitable for different application scenes, and the current antennas are various in variety and are different in autumn. The antenna widely applied in the civil field is mainly a columnar antenna and a plane antenna, as the name suggests, the radiation source of the columnar antenna is a columnar radiation source, the radiation source of the plane antenna is a flat radiation source, concretely, the columnar antenna comprises a circuit substrate, a reference panel and a columnar radiation source vertical to the circuit substrate, wherein the reference panel is arranged by adopting a conductive material and attached on the circuit substrate, under the excitation of a corresponding excitation signal, the front and back electromagnetic radiation ranges of the columnar antenna using the reference panel as a boundary tend to be consistent without directional radiation capability, and a detection dead zone is formed in the extending direction of two ends of the columnar radiation source, the plane antenna comprises a circuit substrate, a reference panel and a flat radiation source parallel to the reference panel, the reference panel is arranged by adopting a conductive material and attached on the circuit substrate, compared with the cylindrical antenna, the planar antenna has directional radiation capability, but the planar size of the planar antenna in the reference panel direction is directly limited by the area of the reference panel, and the planar size of the planar antenna in the reference panel direction is difficult to be reduced relative to the planar size of the cylindrical antenna in the reference panel direction.
Based on the reciprocity theorem of antennas, the same antenna can be used as both a transmitting antenna and a receiving antenna, and the basic characteristic parameters of the same antenna as the transmitting antenna or the receiving antenna are the same. However, because the detection accuracy of the receiving and transmitting integrated antenna is low, high-frequency antennas for navigation and obstacle avoidance of automobiles, such as antennas larger than 5.8GHz, are generally arranged in the industry in a receiving and transmitting separation mode. However, it is quite unfavorable for the conventional antenna to adopt the separate transmission and reception manner, and as shown in fig. 1, the planar antenna 10P includes a rectangular panel 11P, and a transmitting rectangular antenna 12P and a receiving rectangular antenna 13P disposed on the rectangular panel 11P, wherein to reduce the self-excited interference caused by the mutual reflection between the transmitting rectangular antenna 12P and the receiving rectangular antenna 13P, the transmitting rectangular antenna 12P and the receiving rectangular antenna 13P need to be arranged on the rectangular panel 11P in a mutually distant arrangement manner to ensure the transmission and reception isolation between the transmitting rectangular antenna 12P and the receiving rectangular antenna 13P, so inevitably, the arrangement of the transmitting rectangular antenna 12P and the receiving rectangular antenna 13P will occupy a larger area on the rectangular panel 11P, accordingly, the planar antenna 10P is limited to have a large volume, which is not favorable for the installation and application of the planar antenna 10P. Similarly, the same problem exists in the case of the cylindrical antennas separately arranged for transmitting and receiving, and the arrangement between the antennas occupies a large area in order to ensure the transmitting and receiving isolation between the transmitting antenna and the receiving antenna. In addition, the arrangement among the plurality of antennas inevitably increases the difficulty of arrangement, and even if the difference of small distance parameters may affect the final working parameters of the antennas and directly affect the corresponding detection effect, so that the arrangement process of the plurality of rectangular antennas is more complicated and difficult.
That is to say, the antenna that adopts the receiving and dispatching separation has the advantage in the precision of surveying, and the antenna that nevertheless current adoption receiving and dispatching separation has the antenna to arrange the area occupied too big, and be unfavorable for corresponding installation and application, has the difficulty nature increase of arranging simultaneously, and a great deal of problems such as the complicated difficulty of technology of arranging remain to be solved.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to provide a transceiving-separated microwave detecting antenna, wherein the transceiving-separated microwave detecting antenna can maintain isolation between a receiving antenna and a transmitting antenna, and can ensure that the arrangement between the receiving antenna and the transmitting antenna occupies a small area, thereby facilitating the practical installation and application of the transceiving-separated microwave detecting antenna.
Another objective of the present invention is to provide a microwave detecting antenna with separate transceiving, wherein the microwave detecting antenna with separate transceiving includes a planar radiation source and a cylindrical radiation source, so as to avoid the problem of an excessively large area caused by the design of arranging a plurality of planar antennas or a plurality of cylindrical antennas, so that the microwave detecting antenna with separate transceiving can maintain the isolation between the receiving antenna and the transmitting antenna, and at the same time, ensure that the arrangement between the receiving antenna and the transmitting antenna occupies a small area, thereby improving the practicability of the microwave detecting antenna with separate transceiving by using installation and application.
Another object of the present invention is to provide a transmitting-receiving separated microwave detecting antenna, wherein the transmitting-receiving separated microwave detecting antenna includes a reference ground, wherein the planar radiation source is disposed at an interval on the reference ground, wherein the planar radiation source and the reference ground are disposed such that a projection of the planar radiation source from the reference ground is located in the reference ground, wherein the cylindrical radiation source is disposed in a manner perpendicular to the planar radiation source and forms a radiation gap with the reference ground, such that the arrangement between the planar radiation source and the cylindrical radiation source occupies a smaller area, thereby facilitating installation and application of the transmitting-receiving separated microwave detecting antenna.
Another objective of the present invention is to provide a transmitting-receiving separated microwave detecting antenna, wherein the planar radiation source includes a first feeding point, and the cylindrical radiation source includes a second feeding point, and when the planar radiation source is fed from the first feeding point, a transmitting antenna is formed on the planar radiation source, and a receiving antenna is formed on the cylindrical radiation source.
Another objective of the present invention is to provide a microwave detecting antenna with separate transmitting and receiving functions, wherein in an embodiment of the present invention, when the cylindrical radiation source is fed from the second feeding point, a receiving antenna is formed on the planar radiation source, and a transmitting antenna is formed on the cylindrical radiation source.
Another object of the present invention is to provide a microwave detecting antenna with separate transceiving, wherein the cylindrical radiation source and the planar radiation source are perpendicular to each other, so as to reduce self-excitation interference caused by mutual reflection between the planar radiation source and the cylindrical radiation source, and ensure the transceiving isolation of the microwave detecting antenna with separate transceiving.
Another object of the present invention is to provide a microwave detecting antenna with separate transceiving, wherein the structure and manner of the cylindrical radiation source and the planar radiation source being arranged perpendicular to each other can ensure the transceiving isolation between the receiving antenna and the transmitting antenna, so as to facilitate reducing the self-excited interference caused by the mutual reflection between the receiving antenna and the transmitting antenna, thereby facilitating to improve the anti-interference capability of the microwave detecting antenna with separate transceiving, and correspondingly facilitating to improve the reliability and accuracy of the detection of the microwave detecting antenna with separate transceiving.
Another objective of the present invention is to provide a transmitting-receiving separated microwave detecting antenna, wherein the transmitting-receiving separated microwave detecting antenna includes a circuit substrate, wherein the reference ground is supported on one side of the circuit substrate, the planar radiation source is disposed on the other side of the one side of the circuit substrate, which is supported on the reference ground, to form a structural state in which the planar radiation source is spaced from the reference ground, and the columnar radiation source is disposed in a manner perpendicular to the planar radiation source, such that the arrangement between the planar radiation source and the columnar radiation source occupies a smaller area, thereby facilitating the practical installation and application of the transmitting-receiving separated microwave detecting antenna.
Another objective of the present invention is to provide a transmitting-receiving separated microwave detecting antenna, wherein the circuit substrate has a through hole penetrating through the planar radiation source and the reference ground, wherein the cylindrical radiation source extends at one end thereof to the reference ground through the through hole at the planar radiation source, so as to form the radiation gap between the circumferential surface of the cylindrical radiation source and the reference ground, thereby reducing the arrangement occupation area between the planar radiation source and the cylindrical radiation source, and accordingly reducing the volume of the transmitting-receiving separated microwave detecting antenna.
Another objective of the present invention is to provide a transmitting-receiving separated microwave detecting antenna, wherein the cylindrical radiation source is fixed to the circuit substrate in such a manner that one end of the cylindrical radiation source extends to the reference ground through the through hole at the planar radiation source, so that the arrangement between the planar radiation source and the cylindrical radiation source occupies a smaller area, wherein the end of the cylindrical radiation source fixed to the circuit substrate is a fixed end, and the second feeding point of the cylindrical radiation source is located at the fixed end.
Another object of the present invention is to provide a transceiving microwave detecting antenna, wherein the through hole is located at a physical center point of the planar radiation source, so as to reduce an occupied area for arrangement between the planar radiation source and the cylindrical radiation source, and at the same time, reduce difficulty in arrangement of the planar radiation source and the cylindrical radiation source of the transceiving microwave detecting antenna.
Another objective of the present invention is to provide a microwave detecting antenna with separate transceiving, wherein the first feeding point of the planar radiation source is disposed on the planar radiation source in a manner deviating from a physical central point of the planar radiation source, so as to facilitate corresponding electrical connection between the first feeding point of the planar radiation source and the second feeding point of the cylindrical radiation source during a production process, thereby ensuring a production yield of the microwave detecting antenna with separate transceiving.
Another object of the present invention is to provide a microwave detecting antenna with separate transceiving, wherein the planar radiation sources and the cylindrical radiation sources are arranged, so that the number of radiation sources is reduced, the arrangement area between the radiation sources is reduced, and the gain of the microwave detecting antenna with separate transceiving is increased, which is beneficial to maintaining the operational reliability and accuracy of the microwave detecting antenna with separate transceiving.
According to an aspect of the present invention, there is provided a microwave probe antenna with separate transmission and reception, wherein the microwave probe antenna with separate transmission and reception comprises:
a reference ground;
a planar radiation source, wherein the planar radiation source is spaced apart from the reference ground; and
a cylindrical radiation source, wherein the cylindrical radiation source is arranged in a manner perpendicular to the planar radiation source and forms a radiation gap with the reference ground.
In an embodiment of the present invention, the transmitting-receiving separated microwave detecting antenna includes a circuit substrate, wherein the reference ground is carried on one side of the circuit substrate.
In an embodiment of the utility model, the planar radiation source is disposed on another surface of the circuit substrate on which the ground reference surface is disposed, so as to form a structural state in which the planar radiation source is spaced from the ground reference surface.
In an embodiment of the utility model, the circuit substrate has a through hole penetrating through the planar radiation source and the reference ground, wherein the cylindrical radiation source extends at one end thereof to the reference ground through the through hole at the planar radiation source to form the radiation gap between a circumferential surface of the cylindrical radiation source and the reference ground.
In an embodiment of the utility model, the cylindrical radiation source is fixed to the circuit substrate in such a way that one end of the cylindrical radiation source extends to the reference ground through the through hole at the planar radiation source.
In an embodiment of the utility model, wherein the perforation is located at a physical centre point of the planar radiation source.
In an embodiment of the present invention, the planar radiation source has a first feeding point, wherein the feeding point is disposed at the planar radiation source in a manner of deviating from a physical center point of the planar radiation source.
In an embodiment of the utility model, the columnar radiation source has a second feeding point, wherein an end of the columnar radiation source, which is fixed to the circuit substrate and named correspondingly, is a fixed end, and the second feeding point is located at the fixed end.
In an embodiment of the utility model, when the planar radiation source is fed from the first feeding point, a transmitting antenna is formed on the planar radiation source, and a receiving antenna is formed on the cylindrical radiation source.
In an embodiment of the utility model, when the columnar radiation source is fed from the second feeding point, a receiving antenna is formed on the planar radiation source, and a transmitting antenna is formed on the columnar radiation source.
Further objects and advantages of the utility model will be fully apparent from the ensuing description and drawings.
Drawings
Fig. 1 is a schematic perspective view of a conventional planar antenna designed by separate transmission and reception.
Fig. 2A is a schematic perspective view of a microwave detecting antenna with separate transmitting and receiving functions according to an embodiment of the present invention.
Fig. 2B is a schematic cross-sectional view of the microwave detecting antenna with separated transmitting and receiving according to the above embodiment of the present invention.
Fig. 2C is a radiation pattern of the transmitting-receiving separated microwave detecting antenna according to the above embodiment of the present invention.
Fig. 2D is a S12 curve of the transmitting-receiving separated microwave detecting antenna according to the above embodiment of the present invention.
Fig. 3 is a schematic perspective view of the microwave detecting antenna with separated transmitting and receiving according to a modified embodiment of the above-mentioned embodiment of the present invention.
Fig. 4 is a schematic perspective view of the microwave detecting antenna with separated transmitting and receiving according to another variation of the above-mentioned embodiment of the present invention.
Fig. 5 is a schematic perspective view of the microwave detecting antenna with separated transmitting and receiving according to another variation of the above-mentioned embodiment of the present invention.
Fig. 6 is a schematic perspective view of the microwave detecting antenna with separated transmitting and receiving according to another variation of the above-mentioned embodiment of the present invention.
Fig. 7 is a schematic perspective view of the microwave detecting antenna with separated transmitting and receiving according to another variation of the above-mentioned embodiment of the present invention.
Fig. 8 is a schematic perspective view of the microwave detecting antenna with separated transmitting and receiving according to another variation of the above-mentioned embodiment of the present invention.
Fig. 9 is a schematic perspective view of the microwave detecting antenna with separated transmitting and receiving according to another variation of the above-mentioned embodiment of the present invention.
Fig. 10 is a schematic perspective view of the microwave detecting antenna with separated transmitting and receiving according to another variation of the above-mentioned embodiment of the present invention.
Detailed Description
The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. 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 utility model, 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 utility model.
It will be understood by those skilled in the art that in the present disclosure, the terms "vertical," "lateral," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, the above terms should not be construed as limiting the present invention.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The utility model provides a transmitting-receiving separated microwave detection antenna, wherein the transmitting-receiving separated microwave detection antenna can keep the isolation degree between a receiving antenna and a transmitting antenna, and can ensure that the arrangement between the receiving antenna and the transmitting antenna occupies a smaller area, thereby being beneficial to the actual installation and application of the transmitting-receiving separated microwave detection antenna.
Specifically, referring to fig. 2A of the drawings accompanying the present specification, a schematic structural diagram of a transmitting-receiving separated microwave detecting antenna according to an embodiment of the present invention is illustrated, wherein the transmitting-receiving separated microwave detecting antenna includes a planar radiation source 11, a cylindrical radiation source 12 and a reference ground 20, wherein the planar radiation source 11 is disposed at an interval on the reference ground 20, the cylindrical radiation source 12 is disposed in a manner perpendicular to the planar radiation source 11 and forms a radiation gap 201 with the reference ground 20, such that the arrangement between the planar radiation source 11 and the cylindrical radiation source 12 occupies a smaller area, thereby facilitating the installation and application of the transmitting-receiving separated microwave detecting antenna.
It should be noted that, in this embodiment of the present invention, the receiving and transmitting separated microwave detecting antenna adopts the planar radiation source 11 and the columnar radiation source 12, so as to solve the problem of an excessively large area caused by the arrangement design of multiple planar antennas or multiple columnar antennas adopted by the receiving and transmitting separated antenna in the prior art, so that the receiving and transmitting separated microwave detecting antenna can ensure that the arrangement between the receiving antenna and the transmitting antenna occupies a small area, and thus, the installation and application are utilized to improve the practicability of the receiving and transmitting separated microwave detecting antenna.
In particular, in this embodiment of the utility model, wherein said planar radiation source 11 and said reference ground 20 are arranged such that the projection of said planar radiation source 11 onto said reference ground 20 is located within said reference ground 20, it is to be noted that the projection of said planar radiation source 11 onto said reference ground 20 is understood by a person skilled in the art to be the shadow of said planar radiation source 11 formed on said reference ground 20 by illuminating said planar radiation source 11 with parallel light assuming a direction perpendicular to said planar radiation source 11, wherein the reference to the projection of said planar radiation source 11 onto said reference ground 20 is only used to describe the shape and size relationship between said planar radiation source 11 and said reference ground 20, wherein the actual presence or absence of said projection does not constitute a limitation of the utility model.
It is worth mentioning that, by the structure and the manner in which the columnar radiation source 12 and the planar radiation source 11 are arranged perpendicular to each other, the signal isolation between the columnar radiation source 12 and the planar radiation source 11 can be ensured, so as to be beneficial to reducing self-excitation interference caused by mutual reflection between the columnar radiation source 12 and the planar radiation source 11, and thus to improving the anti-interference capability of the microwave detection antenna for separate transceiving, so as to be beneficial to improving the reliability and accuracy of detection of the microwave detection antenna for separate transceiving.
Further, the transmitting and receiving separated microwave detecting antenna further includes a circuit substrate 30, wherein the reference ground 20 is supported on one side of the circuit substrate 30, the planar radiation source 11 is disposed on the other side of the one side of the circuit substrate 30, which is supported by the reference ground 20, to form a structural state in which the planar radiation source 11 is spaced from the reference ground 20, wherein the columnar radiation source 12 is disposed in a manner perpendicular to the planar radiation source 11, such that the arrangement between the planar radiation source 11 and the columnar radiation source 12 occupies a smaller area, thereby facilitating the practical installation and application of the transmitting and receiving separated microwave detecting antenna.
Specifically, referring to fig. 2B, the circuit substrate 30 has a through hole 301 penetrating through the planar radiation source 11 and the reference ground 20, wherein the cylindrical radiation source 12 extends at one end thereof from the planar radiation source 11 to the reference ground 20 through the through hole 301, so as to form the radiation gap 201 between the circumferential surface of the cylindrical radiation source 12 and the reference ground 20, thereby reducing the arrangement occupation area between the planar radiation source 11 and the cylindrical radiation source 12, and accordingly reducing the volume of the microwave detection antenna for transceiving respectively.
In particular, the cylindrical radiation source 12 is fixed to the circuit substrate 30 in such a way that one end of the cylindrical radiation source 12 extends to the reference ground 20 through the through hole 301 in the planar radiation source 11, so as to form a structural state that the cylindrical radiation source 12 is perpendicular to the planar radiation source 11, thereby enabling the arrangement between the planar radiation source 11 and the cylindrical radiation source 12 to occupy a smaller area, which is beneficial to reducing the volume of the microwave detection antenna for transceiving and separating.
It should be noted that, in this embodiment of the present invention, the through hole 301 is located at the physical central point of the planar radiation source 11, so as to reduce the occupied area for arrangement between the planar radiation source 11 and the cylindrical radiation source 12, and at the same time, reduce the difficulty for arrangement of the planar radiation source 11 and the cylindrical radiation source 12 of the transceiving microwave detecting antenna.
Further, wherein the planar radiation source 11 comprises a first feeding point 111, wherein the cylindrical radiation source 12 comprises a second feeding point 121, wherein the end of the columnar radiation source 12 fixed to the circuit substrate 30 is named correspondingly as the fixed end of the columnar radiation source 12, it is worth mentioning that, in this embodiment of the present invention, wherein the first feeding point 111 is arranged to the planar radiation source 11 in a manner offset from a physical center point of the planar radiation source 11, wherein the second feeding point 121 of the cylindrical radiation source 12 is located at the fixed end of the cylindrical radiation source 12, this is done to facilitate the corresponding electrical connection of the first feeding point 111 of the planar radiation source 11 and the second feeding point 121 of the cylindrical radiation source 12 during production, therefore, the production yield of the microwave detection antenna with the transmitting and receiving separation in the production link is ensured.
Further, when the planar radiation source 11 is fed at the first feeding point 111, a transmitting antenna is formed on the planar radiation source 11, and a receiving antenna is formed on the cylindrical radiation source 12, wherein based on the structure that the cylindrical radiation source 12 and the planar radiation source 11 are arranged perpendicular to each other, the transceiving separated microwave detecting antenna can ensure the transceiving isolation between the receiving antenna and the transmitting antenna, so as to facilitate reducing the self-excitation interference caused by mutual reflection between the receiving antenna and the transmitting antenna, and thus to facilitate improving the anti-interference capability of the transceiving separated microwave detecting antenna, so as to facilitate improving the reliability and accuracy of detection of the transceiving separated microwave detecting antenna.
It should be noted that, in this embodiment of the present invention, preferably, the first feeding point 111 is fed to form a transmitting antenna on the planar radiation source 11, and a receiving antenna is formed on the columnar radiation source 12, so as to prevent the columnar radiation source 12 as a transmitting antenna from making the actual detection area of the microwave detection antenna with separate transmission and reception difficult to control, specifically, because the columnar radiation source has no directional radiation capability, in practical application, the correspondingly transmitted microwave will be transmitted in a non-target detection area, and the correspondingly transmitted microwave, based on a strong penetration characteristic, has uncontrollable actions such as penetrating through a wall and through glass, and thus causes the actual detection area to be difficult to control, and the corresponding detection result is susceptible to environmental interferences outside the target detection area, including motion interference, electromagnetic interference, and self-excitation interference caused by an electromagnetic shielding environment, in the scenario that the cylindrical radiation source 12 is used as a transmitting antenna, the microwave detection antenna for transceiving separation is applied to large-area metal, large-area glass, or small-space high-reflection, the backward electromagnetic radiation of the cylindrical radiation source is reflected strongly and repeatedly, so that a time delay is formed to interfere with the reception of echo signals, thereby affecting the working stability of the microwave detection antenna for transceiving separation, and a detection dead zone is formed in the extension direction of the two ends of the cylindrical radiation source, and particularly, the cylindrical radiation source is used as a central axis and has a concave detection dead zone in the extension direction of the two ends of the cylindrical radiation source, so that the cylindrical radiation source is difficult to match with a corresponding target detection zone.
Specifically, as shown in fig. 2C, taking an ISM operating frequency band of 5.8GHz as an example, when the planar radiation source 11 is fed at the first feeding point 111, based on the cooperation of the planar radiation source 11 and the cylindrical radiation source 12, compared with the existing cylindrical antenna, a detection region formed by the transceiving separated microwave detecting antenna can form directional radiation towards the cylindrical radiation source 12 with the reference ground 20 as a boundary, wherein the formation of the directional radiation is accompanied by an increase of gain in the directional radiation direction and annihilation of a radiation dead zone, the transceiving separated microwave detecting antenna has a gain exceeding 5dB in the directional radiation direction, and when the transceiving separated microwave detecting antenna is applied to human activity detection, the transceiving separated microwave detecting antenna has high reliability and accuracy of the result of detecting human activity, meanwhile, the transmitting power of the transmitting antenna can be reduced, the power consumption of the transmitting-receiving-separated microwave detection antenna is reduced, and as shown in fig. 2D, the value of the S12 curve of the transmitting-receiving-separated microwave detection antenna is smaller near 5.8GHz, which shows that the receiving antenna and the transmitting antenna have higher transmitting-receiving isolation, so that the self-excitation interference caused by mutual reflection between the receiving antenna and the transmitting antenna is reduced, the anti-interference capability of the transmitting-receiving-separated microwave detection antenna is improved, and the reliability and the accuracy of the detection of the transmitting-receiving-separated microwave detection antenna are improved.
That is to say, wherein receiving antenna with transmitting antenna's the area occupied of arranging and the degree of difficulty of arranging have been reduced to receiving antenna with transmitting antenna's the correspondence is dwindled receiving antenna with transmitting antenna's the volume of receiving and transmitting separated microwave detecting antenna when, has still ensured receiving antenna with transmitting antenna's receiving and dispatching isolation, thereby reduce receiving antenna with the self-excited interference that mutual reflection caused between the transmitting antenna has improved receiving and transmitting separated microwave detecting antenna's interference killing feature is favorable to improving receiving and transmitting separated microwave detecting antenna detects reliability and accuracy, so that receiving and transmitting separated microwave detecting antenna's practicality is improved.
It is worth mentioning that, based on the reciprocity theorem of antennas, when the cylindrical radiation source 12 is fed at the second feeding point 121, a receiving antenna is formed on the planar radiation source 11, a transmitting antenna is formed on the cylindrical radiation source 12, and based on the high gain characteristic of the planar radiation source 11, the receiving sensitivity of the microwave detecting antenna with separate receiving and transmitting is improved, and the detecting accuracy of the microwave detecting antenna with separate receiving and transmitting is correspondingly improved, and further, based on the structure that the cylindrical radiation source 12 and the planar radiation source 11 are arranged perpendicular to each other, the microwave detecting antenna with separate receiving and transmitting can also ensure the receiving and transmitting isolation between the receiving antenna and the transmitting antenna, thereby facilitating to reduce the self-excitation interference caused by the mutual reflection between the receiving antenna and the transmitting antenna, and thus improving the anti-interference capability of the microwave detecting antenna with separate receiving and transmitting, the reliability and the accuracy of the detection of the microwave detection antenna with the transmitting and receiving separation are improved.
It is understood that the shapes of the planar radiation source 11 and the reference ground 20 may be variously modified in the case of maintaining the planar radiation source 11 and the reference ground 20 to satisfy the aforementioned positional relationship, and in this embodiment as shown in fig. 2A, the planar radiation source 11 of the transmitting and receiving separated microwave detecting antenna is provided in the form of a rectangular plate to have two long sides and two wide sides, while in some modified embodiments, the shapes of the planar radiation source 11 and the reference ground 20 may be variously modified such as a circle, a semicircle, a sector, an ellipse, a trapezoid, and a regular polygon, and specifically, as shown in fig. 3 to 10 of the drawings of the present specification, the shape modification of the planar radiation source 11 of the transmitting and receiving separated microwave detecting antenna is mainly illustrated.
Illustratively, referring to fig. 3 of the drawings of the specification of the present invention, the transceiver-separated microwave detecting antenna according to a modified embodiment of the above-mentioned embodiment of the present invention is illustrated, which is different from the transceiver-separated microwave detecting antenna shown in fig. 2A, in this modified embodiment shown in fig. 3, two long sides of the planar radiation source 11 are concavely disposed, specifically, concavely disposed toward a direction of a physical center point of the planar radiation source 11, so as to reduce the size of the planar radiation source 11, thereby facilitating to reduce the volume of the transceiver-separated microwave detecting antenna.
Illustratively, referring to fig. 4 of the drawings accompanying the present specification, the microwave detecting antenna with separated transmitting and receiving according to another variant of the above-mentioned embodiment of the present invention is illustrated, in which two wide sides of the planar radiation source 11 are concavely disposed, specifically, towards the direction of the physical center point of the planar radiation source 11, so as to reduce the size of the planar radiation source 11, thereby facilitating to reduce the volume of the microwave detecting antenna with separated transmitting and receiving.
Illustratively, referring to fig. 5 of the drawings of the specification of the present invention, the microwave detecting antenna with separate transmitting and receiving according to another modified embodiment of the above-mentioned embodiment of the present invention is illustrated, which is different from the microwave detecting antenna with separate transmitting and receiving shown in fig. 2A, in this modified embodiment shown in fig. 5, both long sides and both wide sides of the planar radiation source 11 are concavely disposed, specifically, concavely disposed toward the direction of the physical center point of the planar radiation source 11, so as to reduce the size of the planar radiation source 11, which is further beneficial to reduce the volume of the microwave detecting antenna with separate transmitting and receiving.
Illustratively, referring to fig. 6 of the drawings accompanying the present specification, a modified embodiment of the transmitting-receiving-separated microwave detecting antenna is illustrated, in which two broad sides of the planar radiation source 11 of the transmitting-receiving-separated microwave detecting antenna are concavely disposed, specifically, two broad sides of the planar radiation source 11 are concavely indented.
Illustratively, referring further to fig. 7 of the drawings in the specification of the present invention, the microwave detecting antenna with separated transmitting and receiving according to another modified embodiment of the above-mentioned embodiment of the present invention is illustrated, which is different from the microwave detecting antenna with separated transmitting and receiving shown in fig. 6, in this modified embodiment shown in fig. 7, one of the wide sides of the planar radiation source 11 is concave and toothed, and the other wide side of the planar radiation source is concave and arc-shaped.
Illustratively, referring to fig. 8 of the drawings accompanying the present specification, the microwave detecting antenna with separate transmitting and receiving according to another modified embodiment of the present invention is illustrated, which is different from the microwave detecting antenna with separate transmitting and receiving shown in fig. 2A, in this modified embodiment shown in fig. 8, four ends of the planar radiation source 11 are concavely disposed, and accordingly, the planar radiation source 11 is in an octagon shape with two long sides as sides, two wide sides as sides, and an inwards concave end connecting the two long sides and the two wide sides as sides, so as to reduce the size of the planar radiation source 11, thereby facilitating to reduce the volume of the microwave detecting antenna with separate transmitting and receiving.
Illustratively, referring to fig. 9 of the drawings accompanying the present specification, the microwave detecting antenna with separate transmitting and receiving according to another modified embodiment of the above-mentioned embodiment of the present invention is illustrated, and specifically, in this modified embodiment, two ends of the planar radiation source 11 of the microwave detecting antenna with separate transmitting and receiving are concavely disposed, and accordingly, the planar radiation source 11 is in a hexagon with two long sides as sides, two wide sides as sides, and two concave ends connecting the two long sides and the two wide sides as sides.
Illustratively, referring to fig. 9 of the drawings accompanying the present specification, the transmitting and receiving separated microwave detecting antenna according to another modified embodiment of the above-mentioned embodiment of the present invention is illustrated, specifically, in this modified embodiment, two wide sides of the planar radiation source 11 are convexly disposed, specifically, arc-shaped disposed in a direction opposite to a physical center point of the planar radiation source 11, and accordingly, the planar radiation source 11 has an elliptical shape.
It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are given by way of example only and are not limiting of the utility model. The objects of the utility model have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.
Claims (10)
1. Receiving and dispatching separated microwave detection antenna, characterized by comprising:
a reference ground;
a planar radiation source, wherein the planar radiation source is spaced apart from the reference ground; and
a cylindrical radiation source, wherein the cylindrical radiation source is arranged in a manner perpendicular to the planar radiation source and forms a radiation gap with the reference ground.
2. The decoupled microwave probe antenna of claim 1, wherein the decoupled microwave probe antenna includes a circuit substrate, wherein the ground reference is carried on a side of the circuit substrate.
3. The transceiver-decoupled microwave detection antenna of claim 2, wherein the planar radiation source is disposed on the other side of the one side of the circuit substrate carrying the ground reference to form a configuration in which the planar radiation source is spaced from the ground reference.
4. The transceiver-splitting microwave detection antenna of claim 3 wherein the circuit substrate has a bore extending through the planar radiation source and the reference ground, wherein the cylindrical radiation source extends at one end thereof through the bore at the planar radiation source to the reference ground to form the radiation gap between a circumferential surface of the cylindrical radiation source and the reference ground.
5. The transceiver-splitting microwave detection antenna of claim 4 wherein the cylindrical radiation source is secured to the circuit substrate with one end thereof extending through the aperture to the reference ground at the planar radiation source.
6. The transceiver-split microwave detection antenna of claim 5, wherein the perforation is located at a physical center point of the planar radiation source.
7. The transceiver-split microwave detection antenna as claimed in claim 5, wherein the planar radiation source has a first feed point, wherein the feed point is disposed at the planar radiation source in a manner offset from a physical center point of the planar radiation source.
8. The transceiver-split microwave detection antenna as claimed in claim 7, wherein the cylindrical radiation source has a second feeding point, wherein an end of the cylindrical radiation source, designated correspondingly, that is fixed to the circuit substrate is a fixed end, and wherein the second feeding point is located at the fixed end.
9. The transceiver-splitting microwave probe antenna of claim 8 wherein when the planar radiation source is fed from the first feed point, a transmit antenna is formed in the planar radiation source and a receive antenna is formed in the cylindrical radiation source.
10. The transceiver-splitting microwave probe antenna of claim 8 wherein when the cylindrical radiation source is fed from the second feed point, a receiving antenna is formed in the planar radiation source and a transmitting antenna is formed in the cylindrical radiation source.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111166189 | 2021-09-30 | ||
| CN2021111661898 | 2021-09-30 |
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| CN216120757U true CN216120757U (en) | 2022-03-22 |
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| CN202122504959.7U Active CN216120757U (en) | 2021-09-30 | 2021-10-18 | Transmit-receive separated microwave detection antenna |
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| CN (1) | CN216120757U (en) |
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