CN212257696U - PCB antenna and electronic device using same - Google Patents
PCB antenna and electronic device using same Download PDFInfo
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- CN212257696U CN212257696U CN202021347023.7U CN202021347023U CN212257696U CN 212257696 U CN212257696 U CN 212257696U CN 202021347023 U CN202021347023 U CN 202021347023U CN 212257696 U CN212257696 U CN 212257696U
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Abstract
The utility model discloses a PCB antenna and applied this PCB antenna's electron device, PCB antenna include PCB base plate, floor and through getting rid of metal conducting layer on the PCB base plate and feeder, coupling line that form, the one end of coupling line with the floor electricity is connected, the feeder is used for coupling the first signal of receiving with electromagnetic coupling's mode to on the coupling line, the coupling line is used for producing the second signal and arousing under the effect of feeder the floor produces the radiation. On the first signal that will receive with electromagnetic coupling's mode coupling to the coupling line through the feeder, the coupling line produces the second signal and arouses the floor to produce the radiation under the effect of feeder, consequently, the utility model discloses only need reserve less usable floor on the PCB base plate and feed, can arouse the floor through the coupling line and produce the radiation to reduce the usable floor area of PCB antenna, make its space occupy for a short time, can use on the electron device of miniaturization day by day.
Description
Technical Field
The utility model relates to a wireless communication technical field, in particular to electronic device of PCB antenna and applied this PCB antenna.
Background
TWS: the abbreviation of True Wireless Stereo means True Wireless Stereo. In order to meet the requirement of user portability, the TWS technology is widely applied in the field of bluetooth headsets, so that the TWS headset comes along. Bluetooth antennas are an important component in TWS headsets. In the prior art, the bluetooth antenna is limited by the process conditions, which causes the problem of large occupied space, and for increasingly miniaturized electronic devices, the exterior design of the electronic devices is easily limited, and especially for small-sized TWS headsets, the situation is more serious.
SUMMERY OF THE UTILITY MODEL
A primary object of the utility model is to provide an electronic device of PCB antenna and applied this PCB antenna, it is big to aim at solving the bluetooth antenna occupation space among the prior art, is difficult to use the technical problem on the miniaturized electronic device day by day.
In order to solve the technical problem, the utility model provides a technical scheme does:
a PCB antenna comprises a PCB substrate, a floor, a feed line and a coupling line, wherein the feed line and the coupling line are formed by removing a metal conducting layer on the PCB substrate, one end of the coupling line is electrically connected with the floor, the feed line is used for coupling a received first signal to the coupling line in an electromagnetic coupling mode, and the coupling line is used for generating a second signal under the action of the feed line and exciting the floor to generate radiation.
Wherein the PCB antenna further comprises a first impedance element, a first end of the feed line is electrically connected with a circuit on the PCB substrate, a second end of the feed line is electrically connected with the first impedance element, and parameters of the first impedance element are adjustable; alternatively, the second end of the feed line is suspended.
Wherein the line width of the first end portion of the power supply line gradually increases from the first end portion toward the second end portion.
The PCB antenna further comprises a second impedance element, the first end of the coupling line is electrically connected with the floor, the second end of the coupling line is electrically connected with the second impedance element, and the parameter of the second impedance element is adjustable; or the second end of the coupling line is suspended.
Wherein the line widths of at least two portions of the coupled line are different.
Wherein the line length of the feed line is less than a quarter of the wavelength of the radiation and/or the line length of the coupled line is less than a quarter of the wavelength of the radiation.
The feeder line is of a bent structure or a linear structure, and/or the coupling line is of a bent structure or a linear structure.
The feeder line and the coupling line are of a bent structure, the feeder line comprises a feeding main line body, the coupling line comprises a coupling main line body arranged in parallel with the feeding main line body, a first feeding line end and a second feeding line end extend from one side, far away from the coupling main line body, of two ends of the feeding main line body respectively, and a coupling line end extends from one side, facing the feeding main line body, of a free end of the coupling main line body.
The feeder line comprises a first feeder line body and a second feeder line body which are arranged in parallel, the second feeder line body comprises a plurality of sub line bodies which are parallel to each other and have preset intervals, and the coupling line is provided with a line slot which corresponds to each sub line body one to one and is used for embedding the sub line bodies from the free end of the coupling line.
The utility model provides another technical scheme does:
an electronic device comprises the PCB antenna.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a first signal that the feed line will receive is coupled to the coupling line with electromagnetic coupling's mode, and the coupling line produces the second signal and arouses the floor to produce the radiation under the effect of feed line, consequently, the utility model discloses only need reserve less usable floor on the PCB base plate and carry out the feed, can arouse the floor through the coupling line and produce the radiation to reduce the usable floor area of PCB antenna, make its space occupy for a short time, can use on the electron device of miniaturization day by day.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a top view of a PCB antenna of the first embodiment;
fig. 2 is a bottom view of the PCB antenna of the first embodiment;
fig. 3 is another top view of the PCB antenna of the first embodiment;
FIG. 4 is a top view of the PCB antenna of the second embodiment;
fig. 5 is a partially enlarged view of a feeder line and a coupling line in the PCB antenna of the second embodiment;
fig. 6 is a top view of the PCB antenna of the third embodiment;
fig. 7 is a partially enlarged view of a feeder line and a coupling line in the PCB antenna of the fourth embodiment;
FIG. 8 is a top view of the PCB antenna of example five;
fig. 9 is a bottom view of the PCB antenna of the fifth embodiment.
10. A PCB antenna; 1. a PCB substrate; 11. a first surface; 12. a second surface; 2. a feed line; 21. a first end of the feed line; 22. a second end portion of the power feed line; 23. a feed point; 24. a first feeder line; 25. a second feeder line; 26. a third feeder line; 27. a fourth feed line; 28. a fifth feed line; 3. a coupling line; 31. a first end of the coupled line; 32. a second end of the coupled line; 33. a first coupling line; 34. a second coupling line; 35. a third coupling line; 36. a fourth coupling line; 4. a floor; 5. a headroom region.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, "and/or" in the whole text includes three schemes, taking a and/or B as an example, including a technical scheme, and a technical scheme that a and B meet simultaneously; in addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1 to 3, the present embodiment provides a PCB antenna 10, the PCB antenna 10 includes a PCB substrate 1, a ground plate 4, and a feed line 2 and a coupling line 3 formed by removing a metal conductive layer on the PCB substrate 1, one end of the coupling line 3 is electrically connected to the ground plate 4, the feed line 2 is used for coupling a received first signal to the coupling line 3 in an electromagnetic coupling manner, and the coupling line 3 is used for generating a second signal and exciting the ground plate 4 to generate radiation under the action of the feed line 2.
In the embodiment, the first signal received by the feeder line 2 is coupled to the coupling line 3 in an electromagnetic coupling manner, and the coupling line 3 generates the second signal and excites the floor 4 to generate radiation under the action of the feeder line 2, so that the embodiment can excite the floor 4 to generate radiation by the coupling line 3 only by reserving a smaller use area on the PCB substrate 1 for feeding, thereby reducing the use area of the PCB antenna 10, reducing the space occupation of the PCB antenna, and being capable of being applied to increasingly miniaturized electronic devices.
The PCB substrate 1 includes a first surface 11 (shown in fig. 1) and a second surface 12 (shown in fig. 2) which are oppositely disposed, in other words, two side surfaces of the PCB substrate 1 where the wiring is provided. The feed line 2 and the coupling line 3 are arranged on the first surface 11 of the PCB substrate 1, and the feed line 2 and the coupling line 3 are arranged on the same surface of the PCB substrate 1, so that a better electromagnetic coupling effect between the feed line 2 and the coupling line 3 can be achieved, thereby improving the performance of the PCB antenna 10.
As shown in fig. 1, the PCB substrate 1 is provided with a clearance area 5 on the first surface 11, and the feeder line 2 and the coupling line 3 are provided on the clearance area 5. Wherein the feed line 2 and the coupling line 3 are not connected to each other.
In the present embodiment, the power feeding line 2 and the coupled line 3 are horizontally opposed, and the power feeding line 2 is located above the coupled line 3.
In this embodiment, the feeding line 2 and the coupling line 3 are of a bent structure, the feeding line 2 includes a feeding main line body, the coupling line 3 includes a coupling main line body arranged in parallel with the feeding main line body, two ends of the feeding main line body extend out of a first feeding line end and a second feeding line end respectively towards a side away from the coupling main line body, and a free end of the coupling main line body extends out of a coupling line end towards a side where the feeding main line body is located.
The PCB antenna 10 further includes a first impedance element (not shown), the feeding line 2 is a conductor line (conductive trace) implanted on the first surface 11 of the PCB substrate 1, the first end portion 21 of the feeding line 2 is electrically connected to a circuit (not shown) on the PCB substrate 1, and the second end portion 22 of the feeding line 2 is electrically connected to the first impedance element, wherein a parameter of the first impedance element is adjustable. The circuit on the PCB substrate 1 can transmit the first signal on the PCB substrate 1 to the power feeding line 2 through the first end 21 of the power feeding line 2, so that the power feeding line 2 generates an electromagnetic field, thereby achieving electromagnetic coupling between the power feeding line 2 and the coupling line 3. By adjusting the parameters of the first impedance element, the performance of the signal radiated by the PCB antenna 10 in the required frequency band range is optimized, thereby improving the stability of the PCB antenna 10. It will be appreciated that the second end 22 of the feed line 2 may also be floating.
Specifically, the first end 21 of the feed line 2 is soldered to the circuit of the PCB substrate 1, the solder point being called a feed point 23. The first impedance element is at least one of: inductance, capacitance, and resistance. The second end 22 of the feed line 2 is electrically connected to an inductor, capacitor, resistor or other combination.
The line width of the first end portion 21 of the power supply line 2 gradually increases from the first end portion 21 toward the second end portion 22, and the power supply line 2 and the coupling line 3 are impedance-matched by the power supply line 2 having the line width gradually changing at the first end portion 21. The impedance matching refers to a working state that the load impedance (the coupling line 3) and the internal impedance of the excitation source (the feeder line 2) are matched with each other to obtain the maximum power output. The impedance matching has the following effects: 1. the feeder 2 obtains the maximum power output; 2. the high-frequency signal reflection on the feeder line 2 can be effectively reduced and eliminated; thereby significantly improving the performance of the PCB antenna 10.
In the prior art, when the line length of the antenna is 1/4 of the signal wavelength, the transmission conversion efficiency and the reception conversion efficiency of the antenna are the highest. Therefore, the line length of the antenna will be determined according to the frequency, i.e. wavelength, of the transmitted and received signals. In this embodiment, since the radiation is generated by exciting the floor 4 through the coupling line 3, and not by exciting the radiation antenna through the coupling line 3, the line length of the feeding line 2 can be much less than a quarter of the wavelength of the radiation, so as to reduce the usable area of the PCB antenna 10, make the occupied space small, and be applied to increasingly miniaturized electronic devices.
The feed line 2 is of a bent structure to further reduce the use area of the PCB antenna 10, so that it can be applied to a smaller electronic device. It is understood that the feeder 2 may also be a straight line structure. Specifically, as shown in fig. 3, the power supply line 2 includes a first power supply line 24 disposed horizontally with respect to the coupled line 3, a second power supply line 25 extending vertically from an end of the first power supply line 24 toward the coupled line 3, a third power supply line 26 extending horizontally outward from an end of the second power supply line 25 with respect to the coupled line 3, and a fourth power supply line 27 extending vertically from an end of the third power supply line 26 away from the coupled line 3. The third power feed line 26 is the power feed main line body, the second power feed line 25 is the first power feed line end, the fourth power feed line 27 is the second power feed line end, the head end of the first power feed line 24 is electrically connected to the circuit on the PCB substrate 1, and the tail end of the fourth power feed line 27 is electrically connected to the first impedance element. In other words, the head end of the first feeder 24 is the first end 21 of the feeder 2, and the tail end of the fourth feeder 27 is the second end 22 of the feeder 2. The line width of the first power supply line 24 < the line width of the third power supply line 26 < the line width of the second power supply line 25 < the line width of the fourth power supply line 27.
In the embodiment, the coupling line 3 is arranged close to the feeder line 2, which not only enables a better electromagnetic coupling effect to be achieved between the feeder line 2 and the coupling line 3, thereby improving the performance of the PCB antenna 10; and the use area of the PCB antenna 10 can be reduced, so that the occupied space is small, and the PCB antenna can be applied to increasingly miniaturized electronic devices.
The PCB antenna 10 further includes a second impedance element (not shown), as shown in fig. 1, the coupling line 3 is a conductor line (conductive trace) implanted on the first surface 11 of the PCB substrate 1, a first end 31 of the coupling line 3 is electrically connected to the ground 4, and a second end 32 of the coupling line 3 is electrically connected to the second impedance element, wherein a parameter of the second impedance element is adjustable. The second signal generated by the coupled line 3 excites the floor 4 through the first end 31 of the coupled line 3, thereby causing the floor 4 to radiate. By adjusting the parameters of the second impedance element, the performance of the signal radiated by the PCB antenna 10 in the required frequency band range is optimized, thereby improving the stability of the PCB antenna 10. It will be appreciated that the second end 32 of the coupled line 3 may also be suspended.
Specifically, the first end 31 of the coupling wire 3 is welded to the floor 4, and the second impedance element is at least one of: inductance, capacitance, and resistance. The second end 32 of the coupling line 3 is electrically connected to an inductor, a capacitor, a resistor or other combinations.
The line widths of at least two parts of the coupling line 3 are different, and the coupling line 3 and the feed line 2 realize impedance matching by the coupling line 3 with the line widths of the at least two parts being different. The effects are as above and will not be described here.
The line length of the coupling line 3 is less than a quarter of the wavelength of the radiation, and the effect is as above, and the description is omitted here.
The coupling line 3 has a bent structure, and the effect is as above, which is not described herein again. It will be appreciated that the coupled lines 3 may also be straight structures.
Specifically, as shown in fig. 3, the coupled line 3 includes a first coupled line 33 disposed horizontally with respect to the power feed line 2 and a second coupled line 34 extending vertically from an end of the first coupled line 33 toward the power feed line 2. The first coupling line 33 is the coupling main line body, the second coupling line 34 is the coupling line end, the head end of the first coupling line 33 is electrically connected with the floor 4, and the tail end of the second coupling line 34 is electrically connected with the second impedance element. In other words, the head end of the first coupled line 33 is the first end portion 31 of the coupled line 3, and the tail end of the second coupled line 34 is the second end portion 32 of the coupled line 3. The width of the first coupled line 33 < the width of the second coupled line 34.
In the present embodiment, the floor 4 is a copper foil layer on the PCB substrate 1, and the floor 4 is electrically connected to the housing of the electronic device, so that it is grounded. The entire copper foil layer on the PCB substrate 1 is used as the floor 4, which can increase the intensity of radiation generated from the floor 4, thereby improving the performance of the PCB antenna 10.
The frequency band of radiation is 2400MHz-2500 MHz. The frequency band is a frequency band range of bluetooth operation, thereby ensuring normal operation of the PCB antenna 10.
Example two:
the difference between the second embodiment and the first embodiment is that the shapes and positional relationships of the power feeding line 2 and the coupling line 3 are different.
In this embodiment, the feeder 2 includes a first feeder body and a second feeder body that are arranged in parallel, the second feeder body includes a plurality of sub-line bodies that are parallel to each other and have a preset interval, and the coupling line 3 is provided with a slot that corresponds to each sub-line body one-to-one and in which the feeder line bodies are embedded from a free end of the coupling line 3.
Specifically, as shown in fig. 4 and 5, the power supply line 2 includes a first power supply line 24 disposed horizontally, a second power supply line 25 extending vertically downward from the end of the first power supply line 24, a third power supply line 26, a fourth power supply line 27, and a fifth power supply line 28 extending horizontally outward in this order from the second power supply line 25 from above, the fifth power supply line 28 being disposed on the end of the second power supply line 25. The first power supply line 24 is the first power supply line body, the third power supply line 26 is the second power supply line body, the fourth power supply line 27 and the fifth power supply line 28 are the sub-line bodies, the head end of the first power supply line 24 is electrically connected to the circuit on the PCB substrate 1, only one of the tail end of the third power supply line 26, the tail end of the fourth power supply line 27, and the tail end of the fifth power supply line 28 needs to be electrically connected to the first impedance element, and the tail end of the third power supply line 26, the tail end of the fourth power supply line 27, and the tail end of the fifth power supply line 28 may be electrically connected to different first impedance elements. In other words, the head end of the first power feed line 24 is the first end portion 21 of the power feed line 2, the tail end of the third power feed line 26, the tail end of the fourth power feed line 27, and the tail end of the fifth power feed line 28 is the second end portion 22 of the power feed line 2. The line width of the second power supply line 25 < the line width of the third power supply line 26 ═ the line width of the fourth power supply line 27 ═ the line width of the fifth power supply line 28 < the line width of the first power supply line 24.
In the present embodiment, the coupled lines 3 include a first coupled line 33, a second coupled line 34, a third coupled line 35, and a fourth coupled line 36, which are horizontally arranged from top to bottom. The head end of the first coupling line 33, the head end of the second coupling line 34, the head end of the third coupling line 35, and the head end of the fourth coupling line 36 are electrically connected to the floor 4, only one of the tail end of the first coupling line 33, the tail end of the second coupling line 34, the tail end of the third coupling line 35, and the tail end of the fourth coupling line 36 needs to be electrically connected to the second impedance element, and the tail end of the first coupling line 33, the tail end of the second coupling line 34, the tail end of the third coupling line 35, and the tail end of the fourth coupling line 36 may also be electrically connected to different second component elements. In other words, the head end of the first coupled line 33, the head end of the second coupled line 34, the head end of the third coupled line 35, and the head end of the fourth coupled line 36 are the first end portion 31 of the coupled line 3, and the tail end of the first coupled line 33, the tail end of the second coupled line 34, the tail end of the third coupled line 35, and the tail end of the fourth coupled line 36 are the second end portion 32 of the coupled line 3. The width of the second coupled line 34 is equal to the width of the third coupled line 35 < the width of the first coupled line 33 is equal to the width of the fourth coupled line 36.
Specifically, the third, fourth and fifth power supply lines 26, 27 and 28 are embedded in the slots formed by the first, second, third and fourth coupling lines 33, 34, 35 and 36, respectively, and the second and third coupling lines 34 and 35 are embedded in the slots formed by the third, fourth and fifth power supply lines 26, 27 and 28, respectively.
In the present embodiment, the feeding line 2 and the coupling line 3 are embedded into each other, so that a better electromagnetic coupling effect can be achieved between the feeding line 2 and the coupling line 3, thereby improving the performance of the PCB antenna 10; and the use area of the PCB antenna 10 can be reduced, so that the occupied space is small, and the PCB antenna can be applied to increasingly miniaturized electronic devices.
Example three:
the difference between the third embodiment and the first embodiment is that the shapes of the feed line 2 and the coupling line 3 are different.
As shown in fig. 6, in the present embodiment, the power feeding line 2 includes a first power feeding line 24 disposed vertically with respect to the coupled line 3 and a second power feeding line 25 extending horizontally outward from an end of the first power feeding line 24 with respect to the coupled line 3. Wherein the head end of the first feed line 24 is electrically connected to the circuit on the PCB substrate 1, and the tail end of the second feed line 25 is electrically connected to the first impedance element. In other words, the head end of the first feeder 24 is the first end 21 of the feeder 2, and the tail end of the second feeder 25 is the second end 22 of the feeder 2. The line width of the second power feed line 25 < the line width of the first power feed line 24.
In the present embodiment, the coupled line 3 includes a first coupled line 33 horizontally disposed with respect to the power supply line 2 and a second coupled line 34 vertically extending from an end of the first coupled line 33 toward the power supply line 2. The first end of the first coupled line 33 is electrically connected to the floor 4, and the second end of the second coupled line 34 is electrically connected to the second impedance element. The width of the first coupled line 33 < the width of the second coupled line 34. The coupled line 3 and the floor 4 define a boundary surrounding the feeder line 2, and there is a break between the end of the coupled line 3 and the floor 4. The portion of the floor panel 4 constituting the boundary is recessed toward the inside of the body of the floor panel 4 to form a notch corresponding in position to the first end portion 21 of the power feeding line 2, into which the first end portion 21 is fitted.
Example four:
the fourth embodiment is different from the first embodiment in that the shape and positional relationship of the power feeding line 2 and the coupling line 3 are different.
As shown in fig. 7, the power feeding line 2 and the coupled line 3 are horizontally opposed, and the power feeding line 2 is located below the coupled line 3.
In the present embodiment, the power feeding line 2 includes a first power feeding line 24 disposed vertically with respect to the coupled line 3 and a second power feeding line 25 extending horizontally outward from an end of the first power feeding line 24 with respect to the coupled line 3. Wherein the head end of the first feed line 24 is electrically connected to the circuit on the PCB substrate 1, and the tail end of the second feed line 25 is electrically connected to the first impedance element. In other words, the head end of the first feeder 24 is the first end 21 of the feeder 2, and the tail end of the second feeder 25 is the second end 22 of the feeder 2. The line width of the second power feed line 25 < the line width of the first power feed line 24.
In the present embodiment, the coupled line 3 has a straight line structure. The floor 4 defines a boundary surrounding the feeder line 2 and the coupling line 3, and a portion of the floor 4 constituting the boundary is recessed toward the inside of the body of the floor 4 to form a notch corresponding in position to the first end portion 21 of the feeder line 2 and into which the first end portion 21 is fitted.
Example five:
the difference between the fifth embodiment and the first embodiment is that the positional relationship between the power feed line 2 and the coupling line 3 is different.
The feeding line 2 and the coupling line 3 are disposed on different surfaces of the PCB substrate 1, as shown in fig. 8, the feeding line 2 is disposed on a first surface 11 of the PCB substrate 1; as shown in fig. 9, the coupled line 3 is disposed on the second surface 12 of the PCB substrate 1. The power feeding line 2 is obtained by removing part of the copper-clad layer, and the main portion of the power feeding line 2 is a flat section, for example, one end of the main portion is electrically connected with the circuit of the PCB substrate 1 through a remained copper-clad layer with a larger cross section. The coupling line 3 is also obtained by removing part of the copper-clad layer, the coupling line 3 comprises an upright section which is arranged vertically, a first horizontal section which extends from the tail end of the upright section to the right side, and a second horizontal section which extends from the part between the two ends of the upright section to the left side, and the length of the first horizontal section is far greater than that of the second horizontal section.
Example six:
the present embodiment provides an electronic device which may be provided with a PCB antenna as in any of the preceding embodiments.
In this embodiment, the electronic device is a bluetooth headset. It is understood that the electronic device may be a bracelet, a watch, or other electronic devices.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (10)
1. A PCB antenna is characterized by comprising a PCB substrate, a floor, a feed line and a coupling line, wherein the feed line and the coupling line are formed by removing a metal conducting layer on the PCB substrate, one end of the coupling line is electrically connected with the floor, the feed line is used for coupling a received first signal to the coupling line in an electromagnetic coupling mode, and the coupling line is used for generating a second signal under the action of the feed line and exciting the floor to generate radiation.
2. The PCB antenna of claim 1, further comprising a first impedance element, wherein a first end of the feed line is electrically connected to a circuit on the PCB substrate and a second end of the feed line is electrically connected to the first impedance element, wherein a parameter of the first impedance element is adjustable; alternatively, the second end of the feed line is suspended.
3. The PCB antenna of claim 2, wherein the line width of the first end portion of the feed line becomes gradually larger from the first end portion toward the second end portion.
4. The PCB antenna of claim 1, further comprising a second impedance element, wherein the first end of the coupling line is electrically connected to the ground plane and the second end of the coupling line is electrically connected to the second impedance element, wherein a parameter of the second impedance element is adjustable; or the second end of the coupling line is suspended.
5. The PCB antenna of claim 4, wherein at least two portions of the coupled line have different line widths.
6. The PCB antenna of claim 1, wherein the feed line has a line length less than a quarter of the wavelength of the radiation, and/or the coupling line has a line length less than a quarter of the wavelength of the radiation.
7. The PCB antenna of claim 1, wherein the feed line is of a bent structure or a straight structure, and/or the coupling line is of a bent structure or a straight structure.
8. The PCB antenna of claim 7, wherein the feeding line and the coupling line are of a bent structure, the feeding line comprises a feeding main line body, the coupling line comprises a coupling main line body arranged in parallel with the feeding main line body, two ends of the feeding main line body respectively extend out of a first feeding line end and a second feeding line end towards a side away from the coupling main line body, and a free end of the coupling main line body extends out of a coupling line end towards a side where the feeding main line body is located.
9. The PCB antenna of claim 1, wherein the feeder line comprises a first feeder line body and a second feeder line body arranged in parallel, the second feeder line body comprises a plurality of sub-line bodies which are parallel to each other and have a preset interval, and the coupling line is provided with a slot which corresponds to each sub-line body one by one and in which the sub-line bodies are embedded from a free end of the coupling line.
10. An electronic device, characterized in that it comprises a PCB antenna according to any of claims 1-9.
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|---|---|---|---|
| CN202021347023.7U CN212257696U (en) | 2020-07-10 | 2020-07-10 | PCB antenna and electronic device using same |
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| CN202021347023.7U CN212257696U (en) | 2020-07-10 | 2020-07-10 | PCB antenna and electronic device using same |
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| CN212257696U true CN212257696U (en) | 2020-12-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114696078A (en) * | 2020-12-31 | 2022-07-01 | 华为技术有限公司 | Antenna device and electronic apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114696078A (en) * | 2020-12-31 | 2022-07-01 | 华为技术有限公司 | Antenna device and electronic apparatus |
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