CN115458903A - Antenna device - Google Patents

Abstract

The application discloses antenna device includes: a circuit board; the mounting base body is stacked on the circuit board, and an avoiding groove is formed in one side, facing the circuit board, of the mounting base body; the first antenna body is arranged on one side of the mounting base body, which is far away from the circuit board; the receiving circuit is arranged on one side of the circuit board facing the mounting base body; the circuit board sealing cover avoids the groove, and the receiving circuit is located in the avoiding groove and is in communication connection with the first antenna body. In conclusion, the receiving circuit is accommodated in the avoiding groove, so that the height multiplexing is realized, the receiving circuit is prevented from occupying a high space, the overall height of the antenna device is reduced, and the antenna device is further light, thin and miniaturized.

Description

Antenna device

Technical Field

The present application relates to the field of communications technologies, and in particular, to an antenna apparatus.

Background

An antenna plays a crucial role in a wireless communication system as a part for transmitting or receiving radio waves. For example, a GNSS (Global Navigation Satellite System) dual-band Satellite active antenna can realize dual-band coverage of four Navigation systems, namely GPS, GLONASS, galileo and beidou.

In the related art, the GNSS antenna is usually a dual-band satellite active antenna, for example, the GNSS antenna adopts a double-layer stacked structure, and although various antennas can be integrated, the stacked height thereof is large. And the single-layer stacking structure is adopted, although the problem of stacking thickness is relieved to a certain extent, the compatibility is not strong, and various antennas cannot be compatible.

Moreover, no matter the structure is a double-layer stacked structure or a single-layer stacked structure, the circuit board, the radio frequency receiving circuit and the GNSS antenna are sequentially stacked, so that the overall height of the stacked structure of the GNSS antenna is larger, and further the development of the GNSS antenna device towards lightness, thinness and miniaturization is influenced.

Disclosure of Invention

The embodiment of the application discloses an antenna device, which can solve the problem that the height of a stacking structure of the antenna device is large.

In order to achieve the above object, an embodiment of the present application discloses an antenna apparatus, including: a circuit board; the mounting base body is stacked on the circuit board, and an avoiding groove is formed in one side, facing the circuit board, of the mounting base body; the first antenna body is arranged on one side, away from the circuit board, of the mounting base body; the receiving circuit is arranged on one side of the circuit board facing the mounting base body; the circuit board sealing cover avoids the groove, and the receiving circuit is located in the avoiding groove and is in communication connection with the first antenna body.

Optionally, the first antenna body is a dual-frequency GNSS antenna and includes a high-frequency resonant patch and a low-frequency resonant patch, and the low-frequency resonant patch is disposed around the high-frequency resonant patch and spaced from the high-frequency resonant patch; the receiving circuit is a radio frequency receiving circuit.

Optionally, the mounting substrate is a rotator, the high-frequency resonant patch is provided with a plurality of high-frequency feed points, the feed directions of the high-frequency feed points point to the receiving circuit, the distances between the plurality of high-frequency feed points and the center of the mounting substrate are equal, and the phase differences between the plurality of high-frequency feed points are equal.

Optionally, the mounting substrate is a rotating body, the high-frequency resonant patch is provided with a plurality of high-frequency short-circuit holes, the opening direction of the high-frequency short-circuit holes points to the receiving circuit, the centers of the plurality of high-frequency short-circuit holes are equidistant from the center of the mounting substrate, and the phase difference between the plurality of high-frequency short-circuit holes is equal.

Optionally, the high-frequency resonance patch includes a high-frequency patch body and a high-frequency adjustment branch, the high-frequency adjustment branch includes a first high-frequency branch and a second high-frequency branch, the first high-frequency branch is connected to the high-frequency patch body through the second high-frequency branch, and the first high-frequency branch and the second high-frequency branch have different extending directions.

Optionally, one side of the low-frequency resonant patch facing the high-frequency resonant patch is provided with a stub accommodating groove, the stub accommodating groove is complementary to the shape of the high-frequency adjusting stub, and the high-frequency adjusting stub is located in the stub accommodating groove.

Optionally, the low-frequency resonant patch is provided with a plurality of first low-frequency short-circuit holes, the first low-frequency short-circuit holes are located on one side, close to the high-frequency resonant patch, of the low-frequency resonant patch, the opening direction of the first low-frequency short-circuit holes points to the receiving circuit, and the plurality of first low-frequency short-circuit holes are arranged around the high-frequency resonant patch.

Optionally, the mounting substrate is a rotator, the low-frequency resonant patch is provided with a plurality of low-frequency feed points, the feed direction of the low-frequency feed points to the receiving circuit, the distances between the plurality of low-frequency feed points and the center of the mounting substrate are equal, and the phase differences between the plurality of low-frequency feed points are equal.

Optionally, the mounting substrate is a rotating body, the low-frequency resonant patch is provided with a frequency modulation gap, a length direction of the frequency modulation gap points to the center of the mounting substrate, and the frequency modulation gap has an opening located on an outer peripheral surface of the low-frequency resonant patch.

Optionally, the first antenna body further includes a plurality of low-frequency minor matters patches, a second low-frequency short circuit hole is formed in the low-frequency minor matters patches, the opening direction of the second low-frequency short circuit hole points to the receiving circuit, and the plurality of low-frequency minor matters patches are arranged around the low-frequency resonance patches.

Optionally, the mounting base includes a base portion and a protruding portion, the circuit board, the base portion and the protruding portion are sequentially connected, one side of the base portion, which is away from the circuit board, is a first mounting surface, the first mounting surface is used for arranging the protruding portion, the first mounting surface has an annular region surrounding the protruding portion, one side of the protruding portion, which is away from the base portion, is provided with a second mounting surface, and the first antenna body is arranged on the second mounting surface; the antenna device further comprises a second antenna body, a third antenna body and a fourth antenna body, wherein at least part of the second antenna body, at least part of the third antenna body and at least part of the fourth antenna body are arranged in the annular area of the first installation surface.

Optionally, the second antenna body is a 4G main set antenna, the 4G main set antenna includes a 4G main set antenna body, a first end face main branch, a second end face main branch and a third end face main branch, the first end face main branch, the second end face main branch and the third end face main branch are all connected to the 4G main set antenna body, the first end face main branch, the second end face main branch and the third end face main branch are all located on the first mounting surface, the length of the first end face main branch, the length of the second end face main branch and the length of the third end face main branch are sequentially increased.

Optionally, the 4G main antenna assembly further includes a fourth side main branch and a fifth side main branch, the mounting base further includes a first peripheral surface connected to the first mounting surface, and the fourth side main branch and the fifth side main branch are both disposed on the first peripheral surface and connected to the 4G main antenna assembly.

Optionally, the third antenna body is a 4G diversity antenna, the 4G diversity antenna includes a 4G diversity antenna body, a first end diversity branch, a second end diversity branch, and a third end diversity branch, the first end diversity branch, the second end diversity branch, and the third end diversity branch are all connected to the 4G diversity antenna body, the first end diversity branch, the second end diversity branch, and the third end diversity branch are all disposed on the first mounting surface, and the length of the first end diversity branch, the length of the second end diversity branch, and the length of the third end diversity branch are sequentially increased.

Optionally, the 4G diversity antenna further includes a fourth side diversity branch and a fifth side diversity branch, the mounting base further includes a first peripheral surface connected to the first mounting surface, and the fourth side diversity branch and the fifth side diversity branch are both disposed on the first peripheral surface and connected to the 4G diversity antenna body.

Optionally, the mounting base is a revolving body, and the fourth antenna body is a WIFI antenna or a bluetooth antenna; the feed points of the second antenna body, the third antenna body and the fourth antenna body are uniformly distributed in a circular array around the central shaft of the installation base body.

Optionally, the distance between the second mounting surface and the first mounting surface is 3-5 mm, and/or the width of the annular area of the first mounting surface is 7-10 mm.

Optionally, a shielding case is attached to the inside of the avoiding groove, a first shielding layer is arranged on one surface, facing the circuit board, of the mounting base body, the first shielding layer is connected with the periphery of the shielding case, a second shielding layer is arranged on one surface, facing the mounting base body, of the circuit board, the first shielding layer is attached to the second shielding layer, the shielding case is covered on the receiving circuit, and the first shielding layer and the second shielding layer surround the receiving circuit.

Optionally, the receiving circuit includes a first-stage filter circuit, a first-stage amplifying circuit, a second-stage filter circuit, a second-stage amplifying circuit, and an attenuating circuit, which are connected in sequence, and the first-stage filter circuit is in communication connection with the first antenna body.

Optionally, the mounting base body is provided with a first fixing hole, the first fixing hole is a threaded hole, the circuit board is provided with a second fixing hole corresponding to the first fixing hole, the antenna device further comprises a connecting bolt, the connecting bolt penetrates through the second fixing hole and is in threaded connection with the first fixing hole, and the circuit board is connected with the mounting base body through the connecting bolt.

Optionally, the height of the avoiding groove is 3.5-5 mm, and the height direction is a direction in which the circuit board and the mounting substrate are stacked in sequence.

Optionally, the mounting substrate is a high dielectric constant medium.

Compared with the prior art, the beneficial effect of this application is:

the application discloses antenna device includes: a circuit board; the mounting base body is stacked on the circuit board, and an avoiding groove is formed in one side, facing the circuit board, of the mounting base body; the first antenna body is arranged on one side of the mounting base body, which is far away from the circuit board; the receiving circuit is arranged on one side of the circuit board facing the mounting base body; the circuit board sealing cover avoids the groove, and the receiving circuit is located in the avoiding groove and is in communication connection with the first antenna body.

It can be seen that the structure that circuit board, radio frequency receiving circuit, GNSS antenna pile up in proper order has been abandoned in this application, establishes dodging the recess through digging, makes receiving circuit and installation base member can multiplex the high position. For example, in the related art, the height of the antenna is at least 10mm, the thickness of the circuit board is at least 1.2mm, and the setting height of the receiving circuit needs to be at least 5.5mm, and by adopting the design of the present application, the receiving circuit will not occupy the height space, and the overall height of the antenna device is reduced by at least 5.5mm.

In conclusion, the receiving circuit is accommodated in the avoiding groove, so that the height multiplexing is realized, the receiving circuit is prevented from occupying a high space, the overall height of the antenna device is reduced, and the antenna device is further light, thin and miniaturized.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a top view of an antenna arrangement as disclosed herein;

FIG. 2 is a block diagram of a high frequency resonant patch as disclosed herein;

FIG. 3 is a block diagram of a low frequency resonant patch as disclosed herein;

fig. 4 is a first perspective view of an antenna apparatus according to the present disclosure;

FIG. 5 is an enlarged view at I of FIG. 4 according to the present disclosure;

FIG. 6 is an enlarged view at II of FIG. 4 of the present disclosure;

fig. 7 is a second perspective view of an antenna apparatus according to the present disclosure;

fig. 8 is an internal structural view of an antenna device disclosed in the present application;

FIG. 9 is a bottom view of a mounting substrate of the present disclosure;

fig. 10 is a block diagram of a circuit board disclosed in the present application.

Description of reference numerals:

100-circuit board,

110-a second fixing hole,

200-mounting a substrate,

201-avoiding groove, 210-base part, 220-lug boss, 221-second mounting surface, 211-first mounting surface, 212-first peripheral surface, 230-first fixing hole,

300-the first antenna body,

310-high frequency resonance patch, 313-first high frequency branch, 314-second high frequency branch, 312-high frequency short circuit hole, 311-high frequency feed point, 315-high frequency patch body,

320-low frequency resonance patch, 321-branch holding groove, 322-first low frequency short circuit hole, 323-low frequency feed point, 324-frequency modulation gap,

330-low frequency branch patch, 331-second low frequency short circuit hole,

400-a receiving circuit,

500-a second antenna body,

501-4G main antenna body, 510-first end face main branch section, 520-second end face main branch section, 530-third end face main branch section, 540-fourth side face main branch section, 550-fifth side face main branch section,

600-a third antenna body,

601-4G diversity antenna body, 610-first end diversity branch, 620-second end diversity branch, 630-third end diversity branch, 640-fourth side diversity branch, 650-fifth side diversity branch,

700-fourth antenna body,

810-shielding case, 820-first shielding layer, 830-second shielding layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Moreover, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific type and configuration may or may not be the same), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

In the related art, for example, a GNSS antenna apparatus may adopt a double-layer stacked structure for ensuring compatibility, and may also adopt a single-layer stacked structure for proper thinning, but no matter which structure is adopted, the layout of the whole antenna apparatus is performed in a manner of sequentially stacking a circuit board, a radio frequency receiving circuit, and a GNSS (Global Navigation Satellite System) antenna, and thus the layout of the antenna apparatus is essential, which results in a larger overall thickness of the antenna apparatus, and further affects further lightening and thinning of the antenna apparatus.

Referring to fig. 1 to 10, an antenna apparatus disclosed in the present application may include: a circuit board 100, a mounting base 200, a first antenna body 300, and a receiving circuit 400. The circuit board 100 may serve as a power supply device and a mounting base of the present application, so as to supply power to the first antenna unit 300, for example, the circuit board 100 is a PCB circuit board or the like.

The mounting substrate 200 may generally serve as a base for antenna arrangement for arranging the first antenna body 300. The mounting substrate 200 may be stacked on the circuit board 100, and a side of the mounting substrate 200 facing the circuit board 100 is provided with a relief groove 201.

The first antenna unit 300 is a core component of signal transmission, and may be used for transmitting and receiving signals, and specifically, the first antenna unit 300 may be disposed on a side of the mounting substrate 200 facing away from the circuit board 100.

The receiving circuit 400 may be disposed on a side of the circuit board 100 facing the mounting substrate 200 so as to correspond to the first antenna body 300, and is configured to receive a signal transmitted from the first antenna body 300.

The circuit board 100 covers the avoiding groove 201, and the receiving circuit 400 is located in the avoiding groove 201 and is in communication connection with the first antenna body 300.

It can be seen that in the application, a structure that the circuit board, the radio frequency receiving circuit and the GNSS antenna are sequentially stacked is abandoned, and the receiving circuit 400 and the mounting base 200 can reuse the height position by digging the avoiding groove 201. For example, in the related art, the height of the antenna is at least 10mm, the thickness of the circuit board is at least 1.2mm, and the setting height of the receiving circuit needs to be at least 5.5mm, and by adopting the design of the present application, the receiving circuit will not occupy the height space, and the overall height of the antenna device is reduced by at least 5.5mm.

In conclusion, the receiving circuit 400 is accommodated in the avoiding groove 201, so that the height multiplexing is realized, the receiving circuit 400 is prevented from occupying a high space, the overall height of the antenna device is reduced, and the antenna device is further light, thin and miniaturized.

Optionally, the first antenna body 300 may be a dual-frequency GNSS antenna, and includes a high-frequency resonant patch 310 and a low-frequency resonant patch 320, where the low-frequency resonant patch 320 is disposed around the high-frequency resonant patch 310 and spaced apart from the high-frequency resonant patch 310.

In this arrangement, the high-frequency resonant patch 310 and the low-frequency resonant patch 320 can be independently fed, so as to simplify the design of the feed point network and simplify the antenna feeding manner.

Alternatively, the receiving circuit 400 may be a Radio-frequency receiving circuit (Radio-frequency circuit). The radio frequency receiving circuit can down-convert the electromagnetic wave with high frequency which is easy to transmit into a low-frequency signal which can be used for information processing, and then follow-up operation is carried out.

Alternatively, the mounting base 200 may be a solid of revolution. The high-frequency resonance patch 310 is provided with a plurality of high-frequency feeding points 311, and the feeding direction of the high-frequency feeding points 311 is directed to the receiving circuit 400, and specifically, through holes corresponding to each other are provided on the high-frequency resonance patch 310 and the mounting substrate 200 to communicate with each other to form a high-frequency feeding point hole, and the high-frequency feeding point 311 may be provided in the high-frequency feeding point hole. And the through direction of the high frequency feed point hole is directed to the receiving circuit 400 so as to realize the energy transmission among the receiving circuit 400, the circuit board 100 and the high frequency resonance patch 310.

Alternatively, the distances between the plurality of high-frequency feeding points 311 and the center of the mounting substrate 200 are equal, and the phase differences between the plurality of high-frequency feeding points 311 are equal, for example, the phase differences are all 90 °, so that the circular polarization of the high-frequency resonant patch 310 can be realized, and the polarization mismatch phenomenon is not easy to occur, and the receiving power with low correlation is easier to obtain.

Alternatively, the high-frequency resonant patch 310 may be further provided with a plurality of high-frequency short-circuit holes 312, and the opening direction of the high-frequency short-circuit holes 312 is directed to the receiving circuit 400. Specifically, the high-frequency resonant patch 310 and the mounting substrate 200 may be provided with through holes so as to communicate with each other to form the high-frequency short-circuit hole 312, and the through direction of the high-frequency short-circuit hole 312 is directed to the receiving circuit 400. The hf shorting holes 312 can widen the operating band of the hf resonant patch 310 to allow better adaptability of the hf resonant patch 310 and improve the smoothness of the hf resonant gain of the hf resonant patch 310.

Alternatively, the centers of the plurality of high-frequency short-circuit holes 312 are equidistant from the center of the mounting substrate 200, and the phase difference between the plurality of high-frequency short-circuit holes 312 is equal, for example, the phase difference between adjacent high-frequency short-circuit holes 312 is 90 °, so that the circular polarization of the high-frequency resonant patch 310 is facilitated, the polarization mismatch phenomenon is not easy to occur, and the receiving power with low correlation is obtained more easily.

Alternatively, the high-frequency resonance patch 310 may include a high-frequency patch body 315 and a high-frequency adjustment stub, which may include a first high-frequency stub 313 and a second high-frequency stub 314. The first high-frequency branch 313 is connected with the high-frequency patch body 315 through the second high-frequency branch 314, the extending directions of the first high-frequency branch 313 and the second high-frequency branch 314 are different, for example, the first high-frequency branch 313 and the second high-frequency branch 314 are perpendicular to each other to form an L-shaped high-frequency adjusting branch. In such a configuration, the adjustment of the high-frequency resonance frequency can be achieved by the mutual engagement of the first high-frequency branch 313 and the second high-frequency branch 314.

Optionally, the high frequency adjustment minor matters can set up a plurality ofly, for example set up 8 high frequency adjustment minor matters, and be annular equipartition array around high frequency patch body 315, adjustment high frequency resonant frequency that like this can be better for antenna device send-receive signal is stable.

Alternatively, the low frequency resonant patch 320 may be provided with a stub receiving groove 321 on a side facing the high frequency resonant patch 310, the stub receiving groove 321 being complementary to the high frequency adjusting stub in shape, and the high frequency adjusting stub being located in the stub receiving groove 321. In this way, the overall layout area occupied by the high-frequency resonant patch 310 and the low-frequency resonant patch 320 can be reduced, so that the structure of the first antenna unit 300 is more compact, and the antenna device can be more miniaturized.

Alternatively, the low frequency resonant patch 320 may be provided with a plurality of first low frequency short circuit holes 322, the first low frequency short circuit holes 322 being located at a side of the low frequency resonant patch 320 close to the high frequency resonant patch 310, the first low frequency short circuit holes 322 may be through holes provided on the low frequency resonant patch 320, and the first low frequency short circuit holes 322 may be opened in a direction toward the receiving circuit 400, and the plurality of first low frequency short circuit holes 322 may be provided around the high frequency resonant patch 310.

Because the first low-frequency short-circuit holes 322 are capacitive, the arrangement of the plurality of first low-frequency short-circuit holes 322 can improve the impedance matching of the low frequency band, and broaden the working frequency band of the low-frequency resonant patch 320, so as to have better adaptability, improve the gain of the low frequency band of the antenna, and improve the anti-interference capability of the antenna.

Optionally, eight first low-frequency short-circuit holes 322 may be provided, and are alternately disposed with the inverted "L" type high-frequency adjusting branches to surround the high-frequency patch body 315, thereby improving the layout reasonableness and the structural compactness of the first antenna body 300.

Alternatively, the low frequency resonant patch 320 may be provided with a plurality of low frequency feed points 323, for example, through holes are formed in the low frequency resonant patch 320 and the mounting substrate 200 to communicate with each other, so as to form a low frequency feed point hole, and the low frequency feed point 323 is disposed in the low frequency feed point hole. The feeding direction of the low frequency feeding point 323 is directed to the receiving circuit 400 so as to realize energy transfer among the receiving circuit 400, the circuit board 100 and the low frequency resonant patch 320.

Alternatively, the plurality of low frequency feed points 323 may be equidistant from the center of the mounting substrate 200, and the plurality of low frequency feed points 323 may have equal phase differences, such as 90 °, so that the circular polarization of the low frequency resonant patch 320 may be achieved, and the polarization mismatch phenomenon is not easy to occur, and the receiving power with low correlation may be obtained more easily.

Alternatively, two low-frequency feed points 323 can be arranged and uniformly distributed in an array, so that double-feed feeding is adopted in antenna design to simplify the feeding network of the antenna. For example, two low-frequency feed points 323 are reserved on the basis of two low-frequency feed points 323, so that double-feed feeding or four-feed feeding can be freely selected during antenna design, and the universality of the antenna device is improved.

Alternatively, the low frequency resonance patch 320 is provided with a tuning slot 324, a length direction of the tuning slot 324 is directed to the center of the mounting substrate 200, the tuning slot 324 has an opening on an outer circumferential surface of the low frequency resonance patch 320, and the tuning slot 324 has a function of adjusting a low frequency resonance frequency for better signal transmission and reception of the antenna device.

Alternatively, the tuning slots 324 may be rectangular slots for manufacturing, and four tuning slots 324 may be provided, and the annular array is distributed around the periphery of the low frequency resonant patch 320 for better tuning the low frequency resonant frequency.

Optionally, the first antenna body 300 may further include a plurality of low frequency stub patches 330. The low-frequency minor matters patch 330 may be provided with a second low-frequency short-circuit hole 331, for example, through holes are formed in the low-frequency minor matters patch 330 and the mounting substrate 200, and the through holes are correspondingly and mutually communicated to form the second low-frequency short-circuit hole 331. The opening direction of the second low frequency short circuit hole 331 points to the receiving circuit 400, and the plurality of low frequency minor matters patches 330 are arranged around the low frequency resonance patch 320.

The low frequency minor matters patch 330 can be used as a tuning minor matters of a low frequency band, and is matched with the second low frequency short circuit hole 331 to improve the low frequency bandwidth, gain and other performances of the antenna, so that the quality of the transmitting and receiving signals of the low frequency resonance patch 320 is improved.

Alternatively, the low frequency stub patches 330 may be arc-shaped patches and arranged in a circular array to surround the low frequency resonant patches 320 to improve the rationality of the arrangement of the first antenna body 300 and to improve the compactness of the first antenna body 300.

Alternatively, the mounting base 200 may include a base portion 210 and a projection portion 220, and the circuit board 100, the base portion 210, and the projection portion 220 are connected in sequence. The side of the base portion 210 facing away from the circuit board 100 is a first mounting surface 211, the first mounting surface 211 is used for arranging the protruding portion 220, the first mounting surface 211 has an annular area surrounding the protruding portion 220, and the side of the protruding portion 220 facing away from the base portion 210 is provided with a second mounting surface 221, so that the mounting base 200 forms a step structure.

The first antenna element 300 may be disposed on the second mounting surface 221. The antenna device may further include a second antenna body 500, a third antenna body 600, and a fourth antenna body 700, wherein at least a portion of the second antenna body 500, at least a portion of the third antenna body 600, and at least a portion of the fourth antenna body 700 are disposed in a loop region of the first mounting surface 211.

It can be seen that, by setting the mounting substrate 200 to be a step structure, a plurality of different antennas, that is, the first antenna body 300, the second antenna body 500, the third antenna body 600, and the fourth antenna body 700, can be laid out and compatible on the mounting substrate 200, and the mutual coupling effect among the antennas can be reduced by setting the step structure, and the isolation between the first antenna body 300 and the second antenna body 500, between the third antenna body 600, and between the fourth antenna bodies 700 is increased, thereby satisfying the multi-system compatibility requirement of the apparatus of the present application.

Alternatively, the second antenna body 500 may be a 4G main set antenna, and the 4G main set antenna may be used for transceiving signals in a 4G frequency band. The 4G main antenna may include a 4G main antenna body 501, a first end surface main branch node 510, a second end surface main branch node 520, and a third end surface main branch node 530, the first end surface main branch node 510, the second end surface main branch node 520, and the third end surface main branch node 530 are all connected to the 4G main antenna body 501, the first end surface main branch node 510, the second end surface main branch node 520, and the third end surface main branch node 530, which are all disposed on the first mounting surface 211, and the length of the first end surface main branch node 510, the length of the second end surface main branch node 520, and the length of the third end surface main branch node 530 sequentially increase.

The first end face main branch section 510, the second end face main branch section 520 and the third end face main branch section 530 respectively resonate high-frequency (resonance frequency is 2600-2700 MHz), medium-frequency (resonance frequency is 1700-2400 MHz) and low-frequency (resonance frequency is 840-960 MHz) signals of the 4G main antenna.

Optionally, the first end surface main branch knot 510, the second end surface main branch knot 520 and the third end surface main branch knot 530 may all be set to be arc-shaped branch knots and set around the first antenna body 300, so that the compactness of the layout may be improved, and the miniaturization of the device of the present application is more facilitated.

Optionally, the 4G main set antenna may further include a fourth side main branch 540 and a fifth side main branch 550. The mounting substrate 200 may further include a first peripheral surface 212 connected to the first mounting surface 211, and a fourth side main branch 540 and a fifth side main branch 550 are disposed on the first peripheral surface 212 and connected to the 4G main-set antenna body 501. The fourth side main branch 540 and the fifth side main branch 550 may be used to adjust the impedance matching of the 4G main set antenna, thereby improving the quality of the 4G main set antenna for transmitting and receiving signals.

Optionally, the third antenna body 600 may be a 4G diversity antenna, where the 4G diversity antenna mainly implements diversity reception to counteract the influence of fading on the received signal, and intensively combines the signals obtained through dispersion, so as to obtain the maximum signal gain and improve the reception quality of the 4G signal.

Specifically, the 4G diversity antenna includes a 4G diversity antenna body 601, a first end diversity branch 610, a second end diversity branch 620, and a third end diversity branch 630. The first end face diversity branch node 610, the second end face diversity branch node 620 and the third end face diversity branch node 630 are all connected with the 4G diversity antenna bodies 601 and 4G diversity antenna bodies 601, the first end face diversity branch node 610, the second end face diversity branch node 620 and the third end face diversity branch node 630 which are all arranged on the first mounting surface 211, and the length of the first end face diversity branch node 610, the length of the second end face diversity branch node 620 and the length of the third end face diversity branch node 630 are sequentially increased in an increasing mode.

The first end diversity branch 610, the second end diversity branch 620 and the third end diversity branch 630 respectively resonate high-frequency (resonance frequency is 2600-2700 MHz), medium-frequency (resonance frequency is 1700-2400 MHz) and low-frequency (resonance frequency is 840-960 MHz) signals of the 4G diversity antenna.

Optionally, the 4G diversity antenna may further include a fourth side diversity branch 640 and a fifth side diversity branch 650. The fourth side diversity branch 640 and the fifth side diversity branch 650 are both disposed on the first periphery 212 and connected to the 4G diversity antenna body 601. The fourth side diversity branch 640 and the fifth side diversity branch 650 may be used to adjust the impedance matching of the 4G diversity antenna, thereby improving the quality of the received signal of the 4G diversity antenna.

Optionally, the fourth antenna body 700 may be a WIFI antenna or a bluetooth antenna, where the WIFI antenna may be used to enhance wireless network signals, and the bluetooth antenna may be used as a necessary component for transmitting or receiving electromagnetic wave energy in a wireless communication system.

Taking the second antenna body 500 as a 4G main diversity antenna, the third antenna body 600 as a 4G diversity antenna, and the first antenna body 300 as a GNSS antenna as an example, the feed points of the second antenna body 500, the third antenna body 600, and the fourth antenna body 700 are uniformly distributed in a circular array around the central axis of the mounting substrate 200.

Therefore, the coupling degree among the second antenna body 500, the third antenna body 600 and the fourth antenna body 700 can be reduced, the influence of the 4G main set antenna and the 4G diversity antenna on the GNSS antenna can be further reduced, and the stability of the phase center of the GNSS antenna can be improved.

Optionally, when the distance between the second mounting surface 221 and the first mounting surface 211 is too small, the coupling between the second antenna body 500 and the first antenna body 300, the coupling between the third antenna body 600 and the first antenna body 300, and the coupling between the fourth antenna body 700 and the first antenna body 300 are too large, and the phase center stability of the first antenna body 300 is further affected. When the distance between the second mounting surface 221 and the first mounting surface 211 is too large, the overall structural stability of the antenna device is affected. Therefore, the distance between the second mounting surface 221 and the first mounting surface 211 can be selected to be 3 mm-5 mm, so that the compatibility and the structural stability of the antenna can be considered.

Alternatively, the width of the annular region of the first mounting surface 211 may be 7mm to 10mm, so that sufficient positions are reserved for mounting the second antenna body 500, the third antenna body 600 and the fourth antenna body 700.

Furthermore, a shielding case 810 can be attached to the avoiding groove 201, a first shielding layer 820 is disposed on one surface of the mounting substrate 200 facing the circuit board 100, the first shielding layer 820 is connected to the periphery of the shielding case 810, a second shielding layer 830 is disposed on one surface of the circuit board 100 facing the mounting substrate 200, the first shielding layer 820 is attached to the second shielding layer 830, the shielding case 810 covers the receiving circuit 400, and the first shielding layer 820 and the second shielding layer 830 surround the receiving circuit 400.

The shielding housing 810, the first shielding layer 820 and the second shielding layer 830 can shield stray signals, prevent the stray signals from interfering the receiving and transmitting of normal signals between the first antenna body 300 and the receiving circuit 400, and improve the quality of signal receiving and transmitting of the device.

Alternatively, the receiving circuit 400 may include a first stage filter circuit, a first stage amplifying circuit, a second stage filter circuit, a second stage amplifying circuit, and an attenuating circuit, which are connected in sequence. The first filtering circuit is in communication connection with the first antenna body 300, and the first filtering circuit is configured to receive a signal of the first antenna body 300, and then the signal passes through the first amplifying circuit, the second filtering circuit, and the second amplifying circuit, and is output by the attenuating circuit, so as to improve the signal receiving sensitivity of the receiving circuit 400 to the first antenna body 300.

Alternatively, the mounting base 200 may be provided with first fixing holes 230, the first fixing holes 230 being screw holes, and the circuit board 100 may be provided with second fixing holes 110 corresponding to the first fixing holes 230. The antenna device further includes a connection bolt, which is inserted through the second fixing hole 110 and is threadedly connected to the first fixing hole 230. In this way, the circuit board 100 is coupled to the mounting base 200 by the coupling bolts to secure the structural stability of the antenna device.

Alternatively, the height of the avoiding groove 201 may be 3.5mm to 5mm, and the height direction is a direction in which the circuit board 100 and the mounting substrate 200 are stacked in sequence. This can achieve sufficient accommodation of the receiving circuit 400 without sacrificing the structural strength of the mounting base 200 by digging out too much material, so that the antenna device can be made thinner and structurally stable.

Alternatively, the mounting substrate 200 may be a high dielectric constant medium, and the high dielectric constant medium may be a medium having a dielectric constant of 3.5 or more, such as a Polyphenylene Oxide (PPO) medium or a ceramic medium. The mounting base 200 uses a high dielectric constant medium, and the overall size of the antenna device can be reduced, and according to practical experience, when the mounting base 200 does not use a high dielectric constant medium, the maximum diameter of the mounting base 200 is 110mm, and after the high dielectric constant medium is used, the diameter of the mounting base 200 is shortened to 80mm, and thus the antenna device can be further miniaturized.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. An antenna device, comprising:

a circuit board (100);

the mounting base body (200) is superposed on the circuit board (100), and one side, facing the circuit board (100), of the mounting base body (200) is provided with an avoidance groove (201);

the first antenna body (300) is arranged on one side, away from the circuit board (100), of the mounting base body (200);

a receiving circuit (400) provided on a side of the circuit board (100) facing the mounting base (200);

the circuit board (100) covers the avoiding groove (201), and the receiving circuit (400) is located in the avoiding groove (201) and is in communication connection with the first antenna body (300).

2. The antenna device according to claim 1, characterized in that the first antenna body (300) is a dual-frequency GNSS antenna and comprises a high-frequency resonant patch (310) and a low-frequency resonant patch (320), the low-frequency resonant patch (320) being arranged around the high-frequency resonant patch (310) and spaced apart from the high-frequency resonant patch (310);

the receiving circuit (400) is a radio frequency receiving circuit.

3. The antenna device according to claim 2, wherein the high-frequency resonance patch (310) includes a high-frequency patch body (315) and a high-frequency adjustment branch, the high-frequency adjustment branch includes a first high-frequency branch (313) and a second high-frequency branch (314), the first high-frequency branch (313) is connected to the high-frequency patch body (315) via the second high-frequency branch (314), and the first high-frequency branch (313) and the second high-frequency branch (314) extend in different directions.

4. The antenna device according to claim 3, wherein a side of the low frequency resonance patch (320) facing the high frequency resonance patch (310) is provided with a stub receiving groove (321),

the branch accommodating groove (321) is complementary to the high-frequency adjusting branch in shape, and the high-frequency adjusting branch is located in the branch accommodating groove (321).

5. The antenna device according to claim 2, characterized in that the first antenna body (300) further comprises a plurality of low frequency stub patches (330),

a second low-frequency short circuit hole (331) is arranged on the low-frequency branch patch (330), the opening direction of the second low-frequency short circuit hole (331) points to the receiving circuit (400),

a plurality of the low frequency stub patches (330) are disposed around the low frequency resonant patch (320).

6. The antenna device according to claim 1, characterized in that the mounting base (200) comprises a base portion (210) and a protruding portion (220), the circuit board (100), the base portion (210) and the protruding portion (220) being connected in sequence,

the side of the base part (210) departing from the circuit board (100) is a first mounting surface (211), the first mounting surface (211) is used for arranging the bulge part (220), the first mounting surface (211) is provided with an annular area surrounding the bulge part (220), the side of the bulge part (220) departing from the base part (210) is provided with a second mounting surface (221),

the first antenna body (300) is arranged on the second mounting surface (221);

the antenna device further comprises a second antenna body (500), a third antenna body (600) and a fourth antenna body (700), wherein at least part of the second antenna body (500), at least part of the third antenna body (600) and at least part of the fourth antenna body (700) are all arranged in an annular area of the first installation surface (211).

7. The antenna device according to claim 6, wherein the second antenna body (500) is a 4G main set antenna, the 4G main set antenna comprises a 4G main set antenna body (501), a first end face main branch (510), a second end face main branch (520) and a third end face main branch (530),

the first end face main branch joint (510), the second end face main branch joint (520) and the third end face main branch joint (530) are all connected with the 4G main antenna assembly body (501),

the 4G main antenna body (501), the first end face main branch section (510), the second end face main branch section (520) and the third end face main branch section (530) are all arranged on the first mounting surface (211),

the length of the first end face main branch joint (510), the length of the second end face main branch joint (520) and the length of the third end face main branch joint (530) are sequentially increased.

8. The antenna arrangement according to claim 7, characterized in that the third antenna body (600) is a 4G diversity antenna, the 4G diversity antenna comprising a 4G diversity antenna body (601), a first end diversity branch (610), a second end diversity branch (620) and a third end diversity branch (630),

the first end diversity branch (610), the second end diversity branch (620) and the third end diversity branch (630) are all connected with the 4G diversity antenna body (601),

the 4G diversity antenna body (601), the first end diversity branch (610), the second end diversity branch (620) and the third end diversity branch (630) are all arranged on the first mounting surface (211),

the length of the first end face diversity branch (610), the length of the second end face diversity branch (620) and the length of the third end face diversity branch (630) are sequentially increased.

9. The antenna device as claimed in claim 8, characterised in that the mounting base (200) is a body of revolution,

the fourth antenna body (700) is a WIFI antenna or a Bluetooth antenna;

the feed points of the second antenna body (500), the third antenna body (600) and the fourth antenna body (700) are uniformly distributed in a circular array around the central axis of the mounting base body (200).

10. The antenna device according to any of claims 1-9, characterized in that a shielding case (810) is attached inside the avoiding groove (201),

one side of the mounting base body (200) facing the circuit board (100) is provided with a first shielding layer (820), the first shielding layer (820) is connected with the periphery of the shielding cover shell (810),

a second shielding layer (830) is arranged on one surface of the circuit board (100) facing the installation base body (200), the first shielding layer (820) is attached to the second shielding layer (830),

the shielding case (810) is disposed on the receiving circuit (400), and the first shielding layer (820) and the second shielding layer (830) surround the receiving circuit (400).

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