CN213934183U - Millimeter wave radar receiving and transmitting front end and radar system - Google Patents
Millimeter wave radar receiving and transmitting front end and radar system Download PDFInfo
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- CN213934183U CN213934183U CN202022555835.7U CN202022555835U CN213934183U CN 213934183 U CN213934183 U CN 213934183U CN 202022555835 U CN202022555835 U CN 202022555835U CN 213934183 U CN213934183 U CN 213934183U
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Abstract
The utility model discloses a millimeter wave radar transceiver front end and radar system, wherein the transceiver front end includes: the antenna module comprises a single plate, a transmitting antenna arranged on the back surface of the single plate and a receiving antenna arranged on the front surface of the single plate; the transmitting antenna is connected with a signal generating module; the reflecting module is arranged on the back surface of the single plate, the wave beam emitted by the transmitting antenna is reflected to the back surface of the single plate through the reflecting module, and a through hole is arranged at the position of the single plate where the wave beam exits, so that the wave beam exits through the through hole, and the exit angle of the wave beam is not zero; and the signal processing module is arranged on the back surface of the single board and is connected with the signal generating module and the receiving antenna. The utility model discloses can avoid receiving antenna and transmitting antenna all to distribute on the same face of veneer, be equivalent to increased the distribution space of receiving antenna and transmitting antenna on the veneer, can improve electromagnetic wave intensity through increasing antenna element quantity.
Description
Technical Field
The utility model relates to a radar technical field especially relates to a millimeter wave radar transceiver front end and radar system.
Background
At present, the working frequency of millimeter waves is between microwave and light, and millimeter wave radars have the advantages of small size, light weight, narrow wave velocity, large broadband and the like compared with microwave radars, thereby greatly widening the application field of the millimeter wave radars. However, millimeter waves also have certain disadvantages, such as the millimeter waves are susceptible to oxygen, humidity, fog and rain in atmospheric propagation, resulting in some degree of signal attenuation. In addition, because the volume of the receiving and transmitting front end of the existing millimeter wave radar is relatively small, the distribution space of the receiving and transmitting antenna on a single plate is limited, and the receiving and transmitting range of the wave beam is limited; most receiving antennas and transmitting antennas in the market are concentrated on the same surface of a single plate, if the number of antenna elements of the transmitting antennas is relatively small, the radiation energy collection is relatively weak, and if severe weather occurs again, the receiving antennas are difficult to accurately receive reflected beams, so that the radar monitoring accuracy is low.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, one of the objects of the utility model is to provide a millimeter wave radar receiving and dispatching front end, which can avoid the receiving antenna and the transmitting antenna to be distributed on the same surface of the veneer, and is equivalent to increase the distribution space of the receiving antenna and the transmitting antenna on the veneer, and can improve the electromagnetic wave intensity by increasing the number of the antenna elements.
A second object of the present invention is to provide a radar system.
The utility model discloses an one of the purpose adopts following technical scheme to realize:
a millimeter-wave radar transceiver front-end comprising:
the antenna module comprises a single plate, a transmitting antenna arranged on the back surface of the single plate and a receiving antenna arranged on the front surface of the single plate; the transmitting antenna is connected with a signal generating module;
the reflecting module is arranged on the back surface of the single plate, the wave beam emitted by the transmitting antenna is reflected to the back surface of the single plate through the reflecting module, and a through hole is arranged at the position of the single plate where the wave beam exits, so that the wave beam exits through the through hole, and the exit angle of the wave beam is not zero;
and the signal processing module is arranged on the back surface of the single board and is connected with the signal generating module and the receiving antenna.
Furthermore, the reflection module is a planar reflection member, and an included angle exists between a reflection surface of the reflection module and the single plate.
Furthermore, the planar reflecting piece comprises a first reflecting area and a second reflecting area, and an included angle between the first reflecting area and the second reflecting area is an obtuse angle.
Furthermore, the included angles between the first reflection area and the single plate and between the second reflection area and the single plate are the same.
Further, the reflection module is provided as a non-planar reflection member.
Furthermore, the antenna elements of the transmitting antenna and the receiving antenna are distributed in an array.
Furthermore, the through hole on the single board is arranged in a gap between adjacent antenna elements in the transmitting antenna, and the diameter of the through hole at least occupies one half of the distance between the adjacent antenna elements.
Further, the inner aperture of the through hole is gradually reduced along the direction from the back surface of the single plate to the front surface of the single plate.
Further, the signal generation module comprises a signal generator, an oscillator, an isolator, a power divider and a power amplifier which are connected in sequence, wherein the signal generator generates an oscillation signal through the oscillator, the signal subjected to phase modulation through the isolator passes through the power divider, one part of the signal passes through the power amplifier and is radiated by the transmitting antenna, and the other part of the signal is transmitted to the signal processing module.
The second purpose of the utility model is realized by adopting the following technical scheme:
a radar system comprises the millimeter wave radar transceiving front end.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the receiving antenna is arranged on the front surface of the single plate, the transmitting antenna is arranged on the reverse side of the single plate, the wave beam released by the transmitting antenna is reflected by the reflecting module and then emitted out of the through hole of the single plate, and the wave beam is reflected by a target object and then received by the receiving antenna; wherein because receiving antenna and reflector antenna establish respectively at the tow sides of veneer, for traditional antenna, the utility model discloses the distribution space of antenna element is great relatively, can be through the antenna element quantity that increases transmitting antenna for more radiant energy collects, and then improves electromagnetic wave intensity, improves receiving antenna's reception quality, thereby improves the monitoring accuracy of radar.
Drawings
Fig. 1 is a schematic front structural view of a single board according to a first embodiment of the present invention;
fig. 2 is a schematic cross-sectional structure diagram of a single board according to a first embodiment of the present invention;
fig. 3 is a schematic block diagram of signal transmission of a transceiver front end according to a first embodiment of the present invention;
fig. 4 is a schematic block diagram of signal transmission of a signal generating module according to a first embodiment of the present invention;
fig. 5 is a schematic cross-sectional structure diagram of a single board in the second embodiment of the present invention;
fig. 6 is a schematic cross-sectional structure diagram of a single board in the third embodiment of the present invention.
In the figure: 1. a signal generation module; 11. a signal generator; 12. an oscillator; 13. an isolator; 14. a power divider; 15. a power amplifier; 2. a signal processing module; 3. a transmitting antenna; 4. a receiving antenna; 5. a single board; 6. a through hole; 7. a reflection module; 71. a first reflective region; 72. a second reflective region.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
Example one
The present embodiment provides a millimeter wave radar transceiver front end, which has a small size and can increase the intensity of the transmitted electromagnetic wave, as shown in fig. 3, the transceiver front end of the present embodiment at least includes an antenna module, a reflection module 7 and a signal processing module 2.
As shown in fig. 1 to fig. 3, the antenna module includes a single board 5, a receiving antenna 4 and a transmitting antenna 3, wherein the receiving antenna 4 and the transmitting antenna 3 are mainly concentrated on the single board 5, the single board 5 has a front surface and a back surface, one surface that radiates outwards is the front surface, and the other surface that is opposite to the front surface is the back surface. In this embodiment, the transmitting antenna 3 is disposed on the back side of the single board 5, and the receiving antenna 4 is disposed on the front side of the single board 5; the reflection module 7 is fixed on the back of the single plate 5, the beam emitted by the transmitting antenna 3 is reflected by the reflection module 7 and then irradiates the back of the single plate 5, a through hole 6 is arranged at the position of the single plate 5 where the beam exits, so that the beam reflected by the reflection module 7 exits through the through hole 6 and irradiates on a target object, and an echo signal reflected by the target object is received by the receiving antenna 4 on the front of the single plate 5; wherein, the incident angle and the exit angle of the beam generated by the transmitting antenna 3 are not zero, so that the beam can be emitted from the through hole 6 of the single board 5 with a slight inclination.
The transmitting antenna 3 is connected with a signal generating module 1, and a signal source generated by the signal generating module 1 is transmitted to the transmitting antenna 3 for radiation. In this embodiment, as shown in fig. 4, the signal generating module 1 includes a signal generator 11, an oscillator 12, an isolator 13, a power divider 14, and a power amplifier 15, which are connected in sequence, where the oscillator 12 may be a 16GHz high-frequency oscillator 12, and after the frequency modulated signal sent by the signal generator 11 passes through the oscillator 12, the oscillating signal is sent to the isolator 13 after being subjected to sinusoidal modulation, and then, through the power divider 14, a part of the oscillating signal passes through the power amplifier 15 and is radiated by the transmitting antenna 3, and another part of the oscillating signal is sent to the signal processing module 2 connected thereto. After the beam radiated by the transmitting antenna 3 irradiates a target object, the beam is reflected and received by the receiving antenna 4, and the receiving antenna 4 sends the reflected echo signal to the signal processing module 2 connected with the receiving antenna 4 for processing so as to obtain the relevant information such as the movement speed, the distance and the like of the target object.
The reflection module 7 is configured to reflect the beam emitted by the transmitting antenna 3, which is disposed on the back surface of the single plate 5, into the through hole 6, so that the beam is emitted through the through hole 6 and irradiates on the target object. The reflection module 7 may be a planar reflection member or a non-planar reflection member. Wherein the planar reflecting member can be a smooth flat mirror, a flat mirror made of a metal material, a coated flat mirror, or the like, and can reduce loss of the beam during reflection. In this embodiment, in order to enable the beam to be emitted from the through hole 6, a reflecting surface of the reflecting module 7 may be set to have a certain included angle with the single board 5, wherein the reflecting member may be tilted to enable the beam emitted by the transmitting antenna 3 to irradiate the tilted reflecting member, so that an incident angle and an exit angle of the beam are not zero, and the beam is emitted from the through hole 6.
In this embodiment, the transmitting antenna 3 and the receiving antenna 4 both include a plurality of antenna elements, and the receiving antenna 4 and the transmitting antenna 3 are respectively located on the front and back sides of the single plate 5, so that the receiving antenna 4 and the transmitting antenna 3 can be distributed on the single plate 5 in a relatively large space, that is, more antenna elements can be distributed on the same side of the single plate 5, in this embodiment, the antenna elements of the transmitting antenna 3 and the receiving antenna 4 are distributed in an array manner, a certain gap is maintained between the connected antenna elements, one through hole 6 is uniformly distributed in the gap between the connected antenna elements, and the diameter of the through hole 6 at least occupies one half of the distance between the adjacent antenna elements, so that the beam reflected by the reflecting module 7 can pass through the through hole 6 as much as possible. In addition, the inner aperture of the through hole 6 gradually decreases along the direction from the back surface of the single plate 5 to the front surface of the single plate 5, and the through hole 6 is used for further collecting the wave beams, so that the wave beams emitted from the through hole 6 are more concentrated, and the intensity of the electromagnetic waves is improved.
In this embodiment, the receiving antenna 4 is disposed on the front side of the single board 5, the transmitting antenna 3 is disposed on the back side of the single board 5, and then the beam released by the transmitting antenna 3 is reflected by the reflecting module 7, emitted from the through hole 6 of the single board 5, and reflected by the target object and received by the receiving antenna 4; because the receiving antenna 4 and the reflecting antenna are respectively arranged on the front surface and the back surface of the single plate 5, the distribution space of the antenna elements is relatively large, more radiation energy can be collected by increasing the number of the antenna elements of the transmitting antenna 3, the electromagnetic wave intensity is further improved, the receiving quality of the receiving antenna 4 is improved, and the monitoring accuracy of the radar is further improved.
Example two
In this embodiment, on the basis of the first embodiment, the planar reflector is improved, as shown in fig. 5, the reflector is configured to include a first reflection area 71 and a second reflection area 72, the first reflection area 71 and the second reflection area 72 are both planar reflectors, and a splicing included angle between the first reflection area 71 and the second reflection area 72 is an obtuse angle, so that a beam emitted by the transmitting antenna 3 passes through the first reflection area 71 and the second reflection area 72 to generate different exit angles; optimally, the included angles between the first reflection area 71 and the second reflection area 72 and the single board 5 are the same, so that the beam emitted by the transmitting antenna 3 after being reflected by the first reflection area 71 and the second reflection area 72 has the same exit angle but opposite directions, and the beams reflected by the first reflection area 71 and the second reflection area 72 are gathered and superposed between the first reflection area 71 and the second reflection area 72, thereby enhancing the radiation intensity in the middle of the antenna; however, this case has a certain limitation, and in order to avoid the over-dispersion of the whole beam caused by the over-large reflection angle of the first reflection region 71 and the second reflection region 72, the incident angle and the reflection angle of the first reflection region 71 and the second reflection region 72 need to be controlled to be maintained within 10 °, so that the beam can be concentrated in the middle as much as possible.
EXAMPLE III
In this embodiment, on the basis of the first embodiment, as shown in fig. 6, the reflection module 7 is a non-planar reflection member, for example, a reflection member with a cambered surface structure, and when a beam is irradiated on the reflection member with the cambered surface structure, the surface of the reflection member is curved so that the incident angle and the exit angle of the beam after reflection are both nonzero; the reflection module 7 may even include a non-planar reflection element and a planar reflection element, which are used in a matching manner, and the specific shape of the reflection element is not limited herein, and only the reflection element needs to reflect the beam emitted by the transmitting antenna 3 located on the back surface of the single board 5 to the through hole 6 on the single board 5, and the multiple reflections can be implemented by the multiple reflection elements to change the propagation direction of the beam, so as to change the angle of the beam emitted from the through hole 6.
Example four
The embodiment discloses a radar system, which includes a millimeter wave radar transceiver front end as in the first embodiment, and the millimeter wave radar transceiver front end as in the first embodiment is applied to the radar system of this embodiment, so as to improve the monitoring accuracy of the radar by improving the intensity of electromagnetic waves.
The radar system in this embodiment and the millimeter wave radar transceiver front end in the foregoing embodiment are based on two aspects of the same inventive concept, and the millimeter wave radar transceiver front end has been described in detail in the foregoing, so that those skilled in the art can clearly understand the structure and implementation process of the system in this embodiment according to the foregoing description, and for the sake of brevity of the description, no further description is given here.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (10)
1. A millimeter-wave radar transceiver front end, comprising:
the antenna module comprises a single plate, a transmitting antenna arranged on the back surface of the single plate and a receiving antenna arranged on the front surface of the single plate; the transmitting antenna is connected with a signal generating module;
the reflecting module is arranged on the back surface of the single plate, the wave beam emitted by the transmitting antenna is reflected to the back surface of the single plate through the reflecting module, and a through hole is arranged at the position of the single plate where the wave beam exits, so that the wave beam exits through the through hole, and the exit angle of the wave beam is not zero;
and the signal processing module is arranged on the back surface of the single board and is connected with the signal generating module and the receiving antenna.
2. The millimeter wave radar transceiver front end of claim 1, wherein the reflection module is a planar reflector, and an included angle exists between a reflection surface of the reflector and the single plate.
3. The millimeter wave radar transceiver front end of claim 2, characterized in that the planar reflector comprises a first reflector region and a second reflector region, and an included angle between the first reflector region and the second reflector region is an obtuse angle.
4. The millimeter wave radar transceiver front end of claim 3, wherein the first reflecting area and the second reflecting area have the same angle with the single plate.
5. The millimeter wave radar transceiver front end of claim 1, wherein the reflector module is configured as a non-planar reflector.
6. The millimeter wave radar transceiver front end of claim 1, wherein the antenna elements of the transmitting antenna and the receiving antenna are distributed in an array.
7. The millimeter wave radar transceiver front end of claim 6, wherein the through holes on the single board are disposed in gaps between adjacent antenna elements in the transmitting antenna, and a diameter of the through holes is at least one-half of a distance between the adjacent antenna elements.
8. The millimeter wave radar transceiver front end of claim 1, wherein an inner aperture of the through hole gradually decreases in a direction from a back surface of the single plate to a front surface of the single plate.
9. The millimeter wave radar transceiver front end of claim 1, wherein the signal generation module comprises a signal generator, an oscillator, an isolator, a power divider, and a power amplifier, which are connected in sequence, the signal generator generates an oscillation signal via the oscillator, the signal phase-modulated via the isolator passes through the power divider, a part of the signal passes through the power amplifier and is radiated by the transmitting antenna, and the other part of the signal is transmitted to the signal processing module.
10. A radar system comprising a millimeter wave radar transceiver front end according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022555835.7U CN213934183U (en) | 2020-11-06 | 2020-11-06 | Millimeter wave radar receiving and transmitting front end and radar system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022555835.7U CN213934183U (en) | 2020-11-06 | 2020-11-06 | Millimeter wave radar receiving and transmitting front end and radar system |
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| CN213934183U true CN213934183U (en) | 2021-08-10 |
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| CN202022555835.7U Active CN213934183U (en) | 2020-11-06 | 2020-11-06 | Millimeter wave radar receiving and transmitting front end and radar system |
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Address after: 510000 501, No. 265, Gaotang Road, Tianhe District, Guangzhou City, Guangdong Province (office only) (not for plant use) Patentee after: GUANGZHOU CHENCHUANG TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 510000 0601, building 07, 235 Gaotang Road, Tianhe District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU CHENCHUANG TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A millimeter wave radar transceiver front end and radar system Effective date of registration: 20220629 Granted publication date: 20210810 Pledgee: Guangdong Guangdong Branch financing guarantee Limited by Share Ltd. Pledgor: GUANGZHOU CHENCHUANG TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: Y2022980009364 |
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Date of cancellation: 20231012 Granted publication date: 20210810 Pledgee: Guangdong Guangdong Branch financing guarantee Limited by Share Ltd. Pledgor: GUANGZHOU CHENCHUANG TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: Y2022980009364 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A millimeter wave radar transceiver front-end and radar system Effective date of registration: 20231109 Granted publication date: 20210810 Pledgee: Guangdong Guangdong Branch financing guarantee Limited by Share Ltd. Pledgor: GUANGZHOU CHENCHUANG TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: Y2023980064872 |