Foldable electronic device

Abstract

The invention provides foldable electronic equipment. The foldable electronic equipment comprises a first body part, a second body part, a rotating part, a first feed source, a second feed source, a first radiation branch knot, a second radiation branch knot and a first parasitic branch knot, the first radiation branch knot is arranged on the first body part and supports receiving and transmitting of electromagnetic wave signals of a first frequency band under excitation of the first feed source. The second radiation branch knot is arranged on the second body part and supports receiving and transmitting of electromagnetic wave signals of a second frequency band under excitation of the second feed source. The first parasitic branch knot is arranged on the second body part, is arranged at an interval with the second radiation branch knot and is coupled with the second radiation branch knot, and is used as a parasitic branch knot of the second radiation branch knot at least when the foldable electronic equipment is in an unfolded state. When the foldable electronic equipment is in a folded state, the first parasitic branch knot is coupled with the first radiation branch knot and at least serves as a parasitic branch knot of the first radiation branch knot. The antenna performance of the foldable electronic equipment in various states can be improved.

Description

Technical Field

[0001] This application relates to the field of terminals, and particularly to a foldable electronic device. Background Art

[0002] Currently, foldable electronic devices such as mobile phones are increasingly trending towards large screens and thinness. However, as the screen size increases, the overall size of the device becomes too large to be conveniently carried. The folding solution can solve this problem, that is, it is convenient to carry and can also achieve large-screen display. Therefore, foldable electronic devices have gradually emerged. Current foldable electronic devices include two frame parts and a rotating member connecting the two frame parts. The two frame parts can rotate around the rotating member to achieve folding or unfolding. In addition, with the popularization of 5G communication technology, people's communication experience is getting better and better. However, the number of antennas included in foldable electronic devices is increasing, and due to the gradual popularization of full-screen and curved screens, the clearance space left for antennas is getting smaller and the distance between antennas is also getting smaller. How to ensure the antenna performance of foldable electronic devices has become a problem to be solved. Summary of the Invention

[0003] This application provides a foldable electronic device to solve the above problems.

[0004] In a first aspect, a foldable electronic device is provided, including a first body part, a second body part, a rotating member, a first feeder, a first radiation branch, a second feeder, a second radiation branch, and a first parasitic branch. The rotating member is connected between the first body part and the second body part. Among them, the first body part and the second body part are rotationally connected through the rotating member. The first radiation branch is disposed on the first body part. The first radiation branch includes a first feeding point, and the first feeding point is connected to the first feeder. The first radiation branch supports the transceiver of electromagnetic wave signals in a first frequency band under the excitation of the first feeder. The second radiation branch is disposed on the second body part. The second radiation branch includes a second feeding point, and the second feeding point is connected to the second feeder. The second radiation branch supports the transceiver of electromagnetic wave signals in a second frequency band under the excitation of the second feeder. The first parasitic branch is disposed on the second body part and is spaced apart from and coupled to the second radiation branch, and at least when the foldable electronic device is in an unfolded state, it serves as a parasitic branch of the second radiation branch. Wherein, when the foldable electronic device is in a folded state, the first body part and the second body part are stacked, and at least part of the projections of the first radiation branch and the first parasitic branch in the stacking direction of the first body part and the second body part coincide. The first parasitic branch is coupled to the first radiation branch and at least serves as a parasitic branch of the first radiation branch.

[0005] For the foldable electronic device of the present application, since both the first parasitic stub and the second radiation stub are disposed on the second body part, and are spaced apart and coupled, and the first parasitic stub serves as a parasitic stub of the second radiation stub at least when the foldable electronic device is in the unfolded state, thereby effectively improving the radiation performance in the second frequency band, and when the foldable electronic device is in the folded state, the first parasitic stub can at least serve as a parasitic stub of the first radiation stub, effectively improving the radiation performance in the first frequency band. Therefore, the antenna performance of the foldable electronic device in various states can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background art, the drawings required for use in the embodiments of the present application or the background art will be described below.

[0007] Figure 1 It is a schematic plan view showing a partial internal structure of the foldable electronic device in the unfolded state in some embodiments of the present application.

[0008] Figure 2 It is a schematic view of the foldable electronic device in the folded state in some embodiments of the present application.

[0009] Figure 3 It is a schematic structural view of the first matching unit and the first parasitic stub of the foldable electronic device in some embodiments of the present application.

[0010] Figure 4 It is another schematic structural view of the first matching unit and the first parasitic stub of the foldable electronic device in some embodiments of the present application.

[0011] Figure 5 It is another schematic plan view showing a partial internal structure of the foldable electronic device in the unfolded state in some embodiments of the present application.

[0012] Figure 6 It is yet another schematic plan view showing a partial internal structure of the foldable electronic device in the unfolded state in some embodiments of the present application.

[0013] Figure 7 It is still another schematic plan view showing a partial internal structure of the foldable electronic device in the unfolded state in some embodiments of the present application.

[0014] Figure 8 It is still another schematic plan view showing a partial internal structure of the foldable electronic device in the unfolded state in some embodiments of the present application.

[0015] Figure 9A further plan view showing part of the internal structure of the foldable electronic device in the unfolded state in some embodiments of the present application.

[0016] Figure 10 Another further plan view showing part of the internal structure of the foldable electronic device in the unfolded state in some embodiments of the present application.

[0017] Figure 11 A schematic structural diagram of a reference foldable electronic device in the unfolded state.

[0018] Figure 12 A comparison schematic diagram of the radiation efficiency and total system efficiency of the foldable electronic device in some embodiments of the present application and the reference foldable electronic device when operating in the second frequency band.

[0019] Figure 13 Another comparison schematic diagram of the radiation efficiency and total system efficiency of the foldable electronic device in some embodiments of the present application and the reference foldable electronic device when operating in the second frequency band.

[0020] Figure 14 Another comparison schematic diagram of the radiation efficiency and total system efficiency of the foldable electronic device in some embodiments of the present application and the reference foldable electronic device when operating in the second frequency band.

[0021] Figure 15 A structural block diagram showing part of the internal structure of the foldable electronic device in some embodiments of the present application. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "thickness", "width", etc. is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than implying or indicating that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. The term "connection" in this application includes meanings such as physical structural connection, electrical connection, direct connection or indirect connection, etc., which can be specifically determined according to the required connection situation. In the description of the embodiments of the present invention, terms such as "first", "second", "third", etc. are not specific designations, but are used to distinguish objects with the same name. In the case where there is an instruction in the specification, the objects with the same name referred to by terms such as "first", "second", "third", etc. can be the same object.

[0024] Please refer to Figure 1 and Figure 2 , Figure 1 FIG. is a schematic plan view showing a partial internal structure of the foldable electronic device 100 in an unfolded state in some embodiments of the present application. Figure 2 FIG. is a schematic view of the foldable electronic device 100 in a folded state in some embodiments of the present application.

[0025] As Figure 1 and Figure 2 shown, the foldable electronic device 100 includes a first body portion 1, a second body portion 2, a rotating member 3, a first feeder 4, a first radiation branch 5, a second feeder 6, a second radiation branch 7, and a first parasitic branch 8. Among them, the rotating member 3 is connected between the first body portion 1 and the second body portion 2, and the first body portion 1 and the second body portion 2 are rotatably connected through the rotating member 3. The first radiation branch 5 is disposed on the first body portion 1. The first radiation branch 5 includes a first feeding point F1, and the first feeding point F1 is connected to the first feeder 4. The first radiation branch 5 supports the transceiver of electromagnetic wave signals in a first frequency band under the excitation of the first feeder 4. The second radiation branch 7 is disposed on the second body portion 2. The second radiation branch 7 includes a second feeding point F2, and the second feeding point F2 is connected to the second feeder 6. The second radiation branch 7 supports the transceiver of electromagnetic wave signals in a second frequency band under the excitation of the second feeder 6. Among them, the first parasitic branch 8 is disposed on the second body portion 2, is spaced apart from and coupled to the second radiation branch 7, and serves as a parasitic branch of the second radiation branch 7 at least when the foldable electronic device 100 is in an unfolded state. Among them, as Figure 2As shown, when the foldable electronic device 100 is in the folded state, the first body portion 1 and the second body portion 2 are stacked, and the projections of the first radiation branch 5 and the first parasitic branch 8 in the stacking direction of the first body portion 1 and the second body portion 2 at least partially overlap. The first parasitic branch 8 is coupled to the first radiation branch 5 and at least serves as a parasitic branch of the first radiation branch 5.

[0026] Thus, in the present application, since the first parasitic branch 8 and the second radiation branch 7 are both disposed on the second body portion 2, are spaced apart and coupled, and the first parasitic branch 8 at least serves as a parasitic branch of the second radiation branch 7 when the foldable electronic device 100 is in the unfolded state, the radiation performance of the second frequency band can be effectively improved. When the foldable electronic device 100 is in the folded state, the first parasitic branch 8 can also at least serve as a parasitic branch of the first radiation branch 5, effectively improving the radiation performance of the first frequency band. Therefore, the antenna performance of the foldable electronic device 100 in various states can be effectively improved.

[0027] In some embodiments, the first frequency band and the second frequency band may be the same or different. Among them, when the first frequency band and the second frequency band are the same, the radiation performance of the same frequency band can be improved when the foldable electronic device 100 is in the folded state or the unfolded state. Among them, when the first frequency band and the second frequency band are different, the radiation performance of at least the first frequency band or the second frequency band can be improved respectively when the foldable electronic device 100 is in the folded state or the unfolded state, and the overall antenna performance can also be improved. In the present application, the first frequency band and the second frequency band are mainly introduced as being different.

[0028] In some embodiments, for example, the first frequency band may be a cellular communication frequency band such as low frequency, medium-high frequency, etc., and the second frequency band may be a GPS frequency band, a WiFi frequency band, etc. Or, the first frequency band may be a low-frequency band, and the second frequency band may be a medium-high frequency band, etc.

[0029] Among them, in the present application, the difference between the "A" frequency band and the "B" frequency band may mean that at least part of the frequency range corresponding to the "A" frequency band and the frequency range corresponding to the "B" frequency band do not overlap, or the resonance frequency / center frequency corresponding to the "A" frequency band and the resonance frequency / center frequency corresponding to the "B" frequency band are different.

[0030] Among them, in the present application, the folded state of the foldable electronic device 100 refers to the state where the included angle between the first body part 1 and the second body part 2 of the foldable electronic device 100 is approximately 0°, that is, the state where the surfaces of the first body part 1 and the second body part 2 face each other and are approximately in contact. The unfolded state of the foldable electronic device 100 means that the included angle between the first body part 1 and the second body part 2 of the foldable electronic device 100 is 180°, that is, the surfaces that are in contact with each other in the folded state of the first body part 1 and the second body part 2 are in a state of being parallel to each other and facing the same side.

[0031] Among them, in some embodiments, the first parasitic stub 8 serves as a parasitic stub of the second radiating stub 7 at least when the foldable electronic device 100 is in the unfolded state, which may include the case where the first parasitic stub 8 serves as a parasitic stub of the second radiating stub 7 only when the foldable electronic device 100 is in the unfolded state, or the case where the first parasitic stub 8 serves as a parasitic stub of the second radiating stub 7 when the foldable electronic device 100 is in both the unfolded state and the folded state. In some embodiments, when the foldable electronic device 100 is in the folded state, the first parasitic stub 8 is coupled to the first radiating stub 5 and serves as at least a parasitic stub of the first radiating stub 5, including the case where the first parasitic stub 8 serves only as a parasitic stub of the first radiating stub 5 when the foldable electronic device 100 is in the folded state, or the case where the first parasitic stub 8 can simultaneously serve as a parasitic stub of both the first radiating stub 5 and the second radiating stub 7.

[0032] In some embodiments, the first parasitic stub 8 serving as a parasitic stub of the second radiating stub 7 may mean that the first parasitic stub 8 can also support the transceiver of electromagnetic wave signals in the second frequency band under the coupled excitation of the second feed 6, that is, it also resonates in the second frequency band. Thus, it can effectively enhance the radiation energy in the second frequency band and increase the radiation performance in the second frequency band. The first parasitic stub 8 serving as a parasitic stub of the first radiating stub 5 may mean that the first parasitic stub 8 can also support the transceiver of electromagnetic wave signals in the first frequency band under the coupled excitation of the first feed 4, that is, it also resonates in the first frequency band. Thus, it can effectively enhance the radiation energy in the first frequency band and increase the radiation performance in the first frequency band.

[0033] In some embodiments, when the foldable electronic device 100 is in the unfolded state, at least some of the branches of the first parasitic stub 8 are resonant in the second frequency band, so that at least some of the branches of the first parasitic stub 8 serve as the parasitic stub of the second radiation stub 7; when the foldable electronic device 100 is in the folded state, at least some of the branches of the first parasitic stub 8 are at least resonant in the first frequency band, so that at least some of the branches of the first parasitic stub 8 at least serve as the parasitic stub of the first radiation stub 5.

[0034] That is, in some embodiments, the first parasitic stub 8 serving as the parasitic stub of the second radiation stub 7 may mean that at least some of the branches of the first parasitic stub 8 can serve as the parasitic stub of the second radiation stub 7, wherein at least some of the branches of the first parasitic stub 8 are resonant in the second frequency band and can support the transceiver of electromagnetic wave signals in the second frequency band under the coupled excitation of the second feed 6, thereby improving the radiation performance in the second frequency band. The first parasitic stub 8 serving as the parasitic stub of the first radiation stub 5 may mean that at least some of the branches of the first parasitic stub 8 can serve as the parasitic stub of the second radiation stub 7, wherein at least some of the branches of the first parasitic stub 8 are at least resonant in the first frequency band and can support the transceiver of electromagnetic wave signals in the first frequency band under the coupled excitation of the first feed 4, thereby improving the radiation performance in the first frequency band.

[0035] In some embodiments, the equivalent electrical length of at least some of the branches of the first parasitic stub 8 can meet the resonance requirements of the first frequency band, and the equivalent electrical length of at least some other branches can meet the resonance requirements of the second frequency band. Thus, when the foldable electronic device 100 is in the unfolded state, at least some of the branches of the first parasitic stub 8 are resonant in the second frequency band, so that at least some of the branches of the first parasitic stub 8 serve as the parasitic stub of the second radiation stub 7; when the foldable electronic device 100 is in the folded state, at least some of the branches of the first parasitic stub 8 are at least resonant in the first frequency band, so that at least some of the branches of the first parasitic stub 8 at least serve as the parasitic stub of the first radiation stub 5.

[0036] Among them, in some embodiments, the equivalent electrical length of at least some of the branches of the first parasitic stub 8 may be the equivalent electrical length of at least some of the branches of the first parasitic stub 8 itself, for example, equal to the physical length of at least some of the branches of the first parasitic stub 8. In some embodiments, the equivalent electrical length of at least some of the branches of the first parasitic stub 8 may be the equivalent electrical length of at least some of the branches of the first parasitic stub 8 in cooperation with the corresponding matching unit.

[0037] Among them, as Figure 1As shown, the first parasitic stub 8 is strip-shaped, and the physical length of at least part of the first parasitic stub 8 can be the dimension in the extending direction along the longest side of the first parasitic stub 8. Among them, the first parasitic stub 8 can be in a straight shape or a bent shape, etc., and the longest side of the first parasitic stub 8 can be the longest straight side or the longest bent side. Figure 1 In this figure, the case where the first parasitic stub 8 is in a bent shape is taken as an example for illustration.

[0038] In some embodiments, as Figure 1 shown, the first parasitic stub 8 includes at least one matching point P1, and the foldable electronic device further includes a first matching unit M1. The first matching unit M1 is connected between at least one matching point P1 of the first parasitic stub 8 and the ground GND. When the foldable electronic device 100 is in the unfolded state, the equivalent electrical length of at least part of the first parasitic stub 8 under the cooperation of the first matching unit M1 satisfies the resonance requirement of the second frequency band, so that at least part of the branches of the first parasitic stub 8 serves as the parasitic stub of the second radiation stub 7; when the foldable electronic device 100 is in the folded state, the equivalent electrical length of at least part of the first parasitic stub 8 under the cooperation of the first matching unit M1 at least satisfies the resonance requirement of the first frequency band, so that at least part of the branches of the first parasitic stub 8 at least serves as the parasitic stub of the first radiation stub 5.

[0039] That is, in some embodiments, the foldable electronic device further includes a first matching unit M1. Through the first matching unit M1, when the foldable electronic device 100 is in the unfolded state, the equivalent electrical length of at least part of the first parasitic stub 8 under the cooperation of the first matching unit M1 can be made to satisfy the resonance requirement of the second frequency band, so that at least part of the branches of the first parasitic stub 8 serves as the parasitic stub of the second radiation stub 7, and when the foldable electronic device 100 is in the folded state, the equivalent electrical length of at least part of the first parasitic stub 8 under the cooperation of the first matching unit M1 at least satisfies the resonance requirement of the first frequency band, so that at least part of the branches of the first parasitic stub 8 at least serves as the parasitic stub of the first radiation stub 5.

[0040] Please refer to Figure 3 , which is a schematic structural diagram of the first matching unit M1 and the first parasitic stub 8 of the foldable electronic device 100 in some embodiments of the present application.

[0041] As Figure 3As shown, the first parasitic stub 8 includes opposite first and second parasitic ends 8a and 8b. At least the first parasitic end 8a is an open end. In some embodiments, the first parasitic end 8a is adjacent to and spaced from the second radiating stub 7. At least one matching point P1 of the first parasitic stub 8 includes a first matching point P11 and a second matching point P12. The first matching point P11 and the second matching point P12 are located between the first parasitic end 8a and the second parasitic end 8b. The first matching unit M1 includes a first matching branch M11 and a second matching branch M12. The first matching branch M11 is connected between the first matching point P1 and the ground GND. The second matching branch M12 is connected between the second matching point P12 and the ground GND. Wherein, when the foldable electronic device 100 is in the unfolded state, the first matching branch M11 is enabled, and the equivalent electrical length of the first stub portion Z1 between the first parasitic end 8a and the first matching point P11 of the first parasitic stub 8 meets the resonance requirement of the second frequency band under the cooperation of the first matching branch M11, so that the first stub portion Z1 of the first parasitic stub 8 serves as a parasitic stub of the second radiating stub 7. When the foldable electronic device 100 is in the folded state, the second matching branch M12 is enabled, and the equivalent electrical length of the second stub portion Z2 between the first parasitic end 8a and the second matching point P12 of the first parasitic stub 8 meets the resonance requirement of the first frequency band under the cooperation of the second matching branch M12, so that the second stub portion Z2 of the first parasitic stub 8 serves as a parasitic stub of the first radiating stub 5. Alternatively, the first matching branch M11 is also further enabled, and the equivalent electrical length of the first stub portion Z1 under the cooperation of the first matching branch M11 meets the resonance requirement of the second frequency band, so that the first stub portion Z1 of the first parasitic stub 8 simultaneously serves as a parasitic stub of the second radiating stub 7.

[0042] That is, in some embodiments, the first parasitic stub 8 includes two matching points, namely a first matching point P11 and a second matching point P12. The first matching unit M1 includes a first matching branch M11 and a second matching branch M12, which are respectively connected between the first matching point P11 and the ground, and between the second matching point P12 and the ground. Thus, by enabling the first matching branch M11 and / or the second matching branch M12, the equivalent electrical length of the first stub portion Z1 with the cooperation of the first matching branch M11 can meet the resonance requirements of the second frequency band, and / or the equivalent electrical length of the second stub portion Z2 with the cooperation of the second matching branch M12 can meet the resonance requirements of the first frequency band. Thus, when the foldable electronic device 100 is in the unfolded state, the first stub portion Z1 in the first parasitic stub 8 serves as a parasitic stub of the second radiation stub 7; when the foldable electronic device 100 is in the folded state, the second stub portion Z2 in the first parasitic stub 8 serves as a parasitic stub of the first radiation stub 5, or further, the first stub portion Z1 in the first parasitic stub 8 can still serve as a parasitic stub of the second radiation stub 7.

[0043] In the present application, "A" being adjacent to and spaced apart from "B" may mean that "A" and "B" are spaced apart from each other, and the distance therebetween is less than a preset distance. For example, it may be 1 cm, 0.8 cm, etc.

[0044] In some embodiments, the first matching branch M11 may include a matching element and a switch connected in series between the first matching point P11 and the ground GND, and the second matching branch M12 may include a matching element and a switch connected in series between the second matching point P12 and the ground GND. Wherein, when the switch in the first matching branch M11 is turned on, the first matching branch M11 is enabled, and the first stub portion Z1 between the first parasitic end 8a of the first parasitic stub 8 and the first matching point P11 specifically has an equivalent electrical length that meets the resonance requirements of the second frequency band with the cooperation of the matching element of the first matching branch M11. At this time, the first stub portion Z1 can serve as a parasitic stub of the second radiation stub 7 at least when the foldable electronic device 100 is in the unfolded state. When the switch in the second matching branch M12 is turned on, the second matching branch M12 is enabled, and the second stub portion Z2 between the first parasitic end 8a of the first parasitic stub 8 and the second matching point P12 specifically has an equivalent electrical length that meets the resonance requirements of the first frequency band with the cooperation of the matching element of the second matching branch M12. At this time, the second stub portion Z2 can serve as a parasitic stub of the first radiation stub 5 when the foldable electronic device 100 is in the folded state.

[0045] When the switches in the first matching branch M11 and the second matching branch M12 are both turned on, the first matching branch M11 and the second matching branch M12 are both enabled. At this time, the equivalent electrical length of the first stub portion Z1 in cooperation with the matching element of the first matching branch M11 meets the resonance requirement of the second frequency band, and the equivalent electrical length of the second stub portion Z2 in cooperation with the matching element of the second matching branch M12 meets the resonance requirement of the first frequency band. Thus, when the foldable electronic device 100 is in the folded state, the second stub portion Z2 can serve as a parasitic stub of the first radiation stub 5, and the first stub portion Z1 can also serve as a parasitic stub of the second radiation stub 7.

[0046] Wherein, the matching element may include a capacitor and / or an inductor. For example, the matching element may include an inductor and a capacitor in parallel, or an inductor and a capacitor in series, or a structure in which an inductor and a capacitor are in parallel and then in series with an inductor or a capacitor, or may also be a structure in which a series branch of a capacitor and an inductor is in parallel with a capacitor or / inductor, and so on.

[0047] Wherein, in some embodiments, when the first frequency band and the second frequency band are different, the types and / or matching parameter values and / or quantities of the matching elements of the first matching branch M11 and the second matching branch M12 may be different. For example, the first matching branch M11 may include an inductor and a capacitor in series, and the second matching branch M12 may include two inductors in parallel, and so on. Wherein, the matching parameter value may be the capacitive value or inductive value finally presented by the matching elements of the first matching branch M11 and the second matching branch M12.

[0048] In some embodiments, since the lengths of the first stub portion Z1 and the second stub portion Z2 are different, the equivalent electrical lengths corresponding to the first stub portion Z1 and the second stub portion Z2 themselves are different. Therefore, when the first frequency band and the second frequency band are different, the overall presented matching parameter values of the matching elements of the first matching branch M11 and the second matching branch M12 may also be the same.

[0049] Please refer to Figure 4 , which is another specific structural schematic diagram of the first matching unit M1 and the first parasitic stub 8 of the foldable electronic device 100 in some embodiments of the present application.

[0050] Wherein, Figure 4 the structure shown and Figure 3The difference in the structures shown is that there is one matching point P1 for the first parasitic stub 8, the first matching unit M1 includes a first matching branch M11 and a second matching branch M12, and the first matching branch M11 and the second matching branch M12 are connected in parallel between the matching point P1 and the ground GND.

[0051] That is, in some embodiments, the first matching branch M11 and the second matching branch M12 can also be connected in parallel between the same matching point P1 and the ground GND.

[0052] Among them, when the foldable electronic device 100 is in the unfolded state, the first matching branch M11 is enabled, and the equivalent electrical length of the stub portion Z0 between the first parasitic end 8a of the first parasitic stub 8 and the matching point P1 meets the resonance requirements of the second frequency band under the cooperation of the first matching branch M11, so that the stub portion Z0 of the first parasitic stub 8 serves as the parasitic stub of the second radiation stub 7. When the foldable electronic device 100 is in the folded state, the second matching branch M12 is enabled, and the equivalent electrical length of the stub portion Z0 under the cooperation of the second matching branch M12 meets the resonance requirements of the first frequency band, so that the stub portion Z0 of the first parasitic stub 8 serves as the parasitic stub of the first radiation stub 5. Or, the first matching branch M11 is further enabled, and the equivalent electrical length of the stub portion Z0 also meets the resonance requirements of the second frequency band under the cooperation of the first matching branch M11, so that the stub portion Z0 of the first parasitic stub 8 serves as the parasitic stub of the second radiation stub 7 at the same time.

[0053] That is, in some embodiments, the stub portion Z0 between the first parasitic end 8a of the first parasitic stub 8 and the matching point P1 can serve as the parasitic stub of the second radiation stub 7 and / or the first radiation stub 5 when the first matching branch M11 and / or the second matching branch M12 is enabled.

[0054] Among them, the first matching branch M11 and the second matching branch M12 can both include matching elements and switches connected in series between the matching point P1 and the ground GND. Among them, when the first frequency band and the second frequency band are different, the matching parameter values presented by the matching elements in the first matching branch M11 and the matching elements in the second matching branch M12 can be different.

[0055] Among them, as previously described, Figure 4 the structures shown and Figure 3The difference between the structures shown is that there is one matching point P1 on the first parasitic stub 8. The first matching unit M1 includes a first matching branch M11 and a second matching branch M12, and the first matching branch M11 and the second matching branch M12 are connected in parallel between the matching point P1 and the ground GND. For other structures, reference can be made to the relevant content described above. Figure 3 of the relevant content.

[0056] Among them, as Figure 1 and Figures 3 - 4 shown, in some embodiments, both the first parasitic end 8a and the second parasitic end 8b of the first parasitic stub 8 are open ends. The first radiation stub 5 includes opposite first end 5a and second end 5b, and both the first end 5a and the second end 5b are open ends. The first feeding point F1 is located between the first end 5a and the second end 5b. The second radiation stub 7 includes opposite third end 7a and fourth end 7b, the third end 7a is an open end, the fourth end 7b is a grounded end, and the second feeding point F2 is located between the third end 7a and the fourth end 7b. Among them, as Figure 1 shown, the third end 7a of the second radiation stub 7, which is an open end, is adjacent to and spaced from the first parasitic end 8a of the first parasitic stub 8, which is an open end, so as to couple with the first parasitic stub 8.

[0057] Among them, in some embodiments, since both the first end 5a and the second end 5b of the first radiation stub 5 are open ends, the first radiation stub 5 can operate in a half - wavelength dipole mode under the excitation of the first feed source 4 to support the transceiver of electromagnetic wave signals in the first frequency band.

[0058] In some embodiments, since the third end 7a of the second radiation stub 7 is an open end and the fourth end 7b is a grounded end, therefore, the second radiation stub 7 forms an inverted F antenna (IFA). The second radiation stub 7 operates in a quarter - wavelength resonance mode under the excitation of the second feed source 6 to support the transceiver of electromagnetic wave signals in the second frequency band. Among them, since the second radiation stub 7 operates in a quarter - wavelength resonance mode, the equivalent electrical length only needs to be one - quarter of the wavelength corresponding to the second frequency band, which can effectively reduce the size of the stub and reduce the occupation of the space of the foldable electronic device 100 that can be retracted.

[0059] Among them, Figure 3 shown, the first stub portion Z1 can be grounded at the first matching point P11 through the enabled first matching unit M11 when the first matching unit M11 is enabled. Figure 3When the second stub portion Z2 shown is enabled by the second matching unit M12, it can be grounded at the second matching point P12 through the enabled second matching unit M12, and Figure 4 the stub portion Z0 shown can be grounded at the matching point P1 through the enabled first matching unit M11 and / or second matching unit M12 when the first matching unit M11 and / or the second matching unit M12 is enabled. Therefore, a structure similar to an inverted-F antenna can be formed, and it can be coupled and excited by the corresponding feed to operate in a quarter-wavelength resonance mode, supporting the transceiver of electromagnetic wave signals in the corresponding frequency band.

[0060] In some embodiments, one end of the first radiating stub 5 can also be an open end and the other end can be a grounded end. For example, the first end 5a is an open end and the second end 5b is a grounded end. Thus, the first radiating stub 5 can also operate in a quarter-wavelength resonance mode under the excitation of the first feed 4 to support the transceiver of electromagnetic wave signals in the first frequency band. Additionally, in some embodiments, the second parasitic end 8b of the first parasitic stub 8 can also be a grounded end. Moreover, in some embodiments, both the third end 7a and the fourth end 7b of the second radiating stub 7 can be open ends, so that the second radiating stub 7 operates in a half-wavelength dipole mode under the excitation of the second feed 6 to support the transceiver of electromagnetic wave signals in the second frequency band.

[0061] Among them, as Figure 1 shown, in some embodiments, the first body portion 1 includes two first ends D11 and two second ends D12 parallel to the rotating member 3, and the second body portion 2 includes two third ends D13 and two fourth ends D14 parallel to the rotating member 3.

[0062] Among them, in this application, being parallel to the rotating member 3 specifically means being parallel to the rotation central axis of the rotating member 3, where the rotation central axis of the rotating member 3 is the central axis around which the first body portion 1 and the second body portion 2 rotate with respect to the rotating member 3.

[0063] In some embodiments, the first end D11 of the first body portion 1 and the third end D13 of the second body portion 2 are both perpendicular to the rotation central axis of the rotating member 3.

[0064] In some embodiments, at least a portion of the first radiating stub 5 is located at the first end D11 of the first body portion 1, at least a portion of the first parasitic stub 8 including the first parasitic end 8a is located at the third end D13 of the second body portion 2, and the first end D11 of the first body portion 1 where the first radiating stub 5 is located and the third end D13 of the second body portion 2 where the first parasitic stub 8 is located face the same direction. Wherein, the second radiating stub 7 is located at the third end D13 where at least a portion of the first parasitic stub 8 is located.

[0065] In some embodiments, at least a portion of the first radiating stub 5 is also located at the second end D12 of the first body portion 1 away from the rotating member 3; at least a portion of the first parasitic stub 8 including the first parasitic end 8a is located at the fourth end D14 of the second body portion 2 away from the rotating member 3.

[0066] In some embodiments, the second end D12 of the first body portion 1 away from the rotating member 3 and the fourth end D14 of the second body portion 2 away from the rotating member 3 are the side ends of the foldable electronic device 100.

[0067] That is, in some embodiments, the first radiating stub 5 and the first parasitic stub 8 may be bent structures. Two portions of the first radiating stub 5 may be respectively located at two adjacent ends of the first body portion 1, and two portions of the first parasitic stub 8 may also be respectively located at two adjacent ends of the second body portion 2. The second radiating stub 7 may be straight and located at one of the ends of the second body portion 2.

[0068] In some embodiments, the first end D11 where a portion of the first radiating stub 5 is located and the third end D13 where a portion of the first parasitic stub 8 is located may jointly form the bottom end of the foldable electronic device 100. That is, a portion of the first radiating stub 5 is located at the side end of the foldable electronic device 100, and another portion is located at the bottom end of the foldable electronic device 100. A portion of the first parasitic stub is also located at the side end of the foldable electronic device 100, and another portion is located at the bottom end of the foldable electronic device 100. The second radiating stub 7 may be located at the bottom end of the second body portion 2 or at the third end D13 that forms the bottom end.

[0069] Among them, when describing the foldable electronic device 100 in the embodiments of the present application, orientation terms such as "top" and "bottom" are mainly described based on the orientation when the user holds the foldable electronic device 100. The position facing the top side of the foldable electronic device 100 is the "top", and the position facing the bottom side of the foldable electronic device 100 is the "bottom". It does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the orientation of the foldable electronic device 100 in the actual application scenario. In some embodiments, the bottom end of the foldable electronic device 100 is the end provided with a headphone jack and a USB jack, and the top end of the foldable electronic device 100 is the other end opposite to the end provided with the headphone jack and the USB jack, which may also refer to the end provided with a camera, a receiver, etc.

[0070] Among them, as Figure 1 shown, the fourth end 7b of the second radiation branch 7, which is grounded, can be close to the rotating member 3.

[0071] Please refer to Figure 5 , which is another schematic plan view showing part of the internal structure of the foldable electronic device 100 in the unfolded state in some embodiments of the present application. Among them, Figure 5 Specifically, it can be an internal structure schematic view showing part of the structure after removing the housing of the first body portion 1 and the second body portion 2. Among them, Figure 5 Relative to Figure 1 more reference numerals and / or elements are shown.

[0072] As Figure 5 shown, in some embodiments, the foldable electronic device 100 further includes a first connection branch 9 and a first switch unit 10. The first connection branch 9 is disposed on the second body portion 2, and is located between the second radiation branch 7 and the first parasitic branch 8 and is spaced from the second radiation branch 7 and the first parasitic branch 8. The first connection branch 9 is connected to the first parasitic branch 8 through the first switch unit 10. Among them, the first switch unit 10 is at least used to conduct when the second radiation branch 7 supports the transceiver of electromagnetic wave signals in the second frequency band under the excitation of the second feed 6, and establish an electrical connection between the first connection branch 9 and the first parasitic branch 8, so that the first parasitic branch 8 is coupled to the second radiation branch 7 through the first connection branch 9.

[0073] That is, in some embodiments, the foldable electronic device 100 further includes a first connecting branch 9 located between the second radiation branch 7 and the first parasitic branch 8 and further includes the first switch unit 10, and the first connecting branch 9 is connected to the first parasitic branch 8 through the first switch unit 10. Thus, when there is a gap between the second radiation branch 7 and the first parasitic branch 8, coupling can occur, but the gap is relatively large and the coupling effect is not particularly good. In this case, the electrical connection between the first connecting branch 9 and the first parasitic branch 8 can be turned on / established, and the coupling between the first parasitic branch 8 and the second radiation branch 7 can be enhanced through the first connecting branch 9, which is beneficial to improving the radiation performance of the second frequency band.

[0074] Wherein, the first switch unit 10 can also establish the electrical connection between the first connecting branch 9 and the first parasitic branch 8 when the first parasitic branch 8 is required to be the parasitic branch of the second radiation branch 7, so that the first parasitic branch 8 is coupled to the second radiation branch 7 through the first connecting branch 9. For example, the first switch unit 10 can also establish the electrical connection between the first connecting branch 9 and the first parasitic branch 8 at least when the foldable electronic device 100 is in the unfolded state, so that the first parasitic branch 8 is coupled to the second radiation branch 7 through the first connecting branch 9.

[0075] Wherein, after the first switch unit 10 establishes the electrical connection between the first connecting branch 9 and the first parasitic branch 8 so that the first parasitic branch 8 is coupled to the second radiation branch 7 through the first connecting branch 9, through the aforementioned first matching unit M11, when the foldable electronic device 100 is in the unfolded state, the equivalent electrical length of at least part of the first parasitic branch 8 under the cooperation of the first matching unit M1 can meet the resonance requirements of the second frequency band, so that at least part of the branches of the first parasitic branch 8 serves as the parasitic branch of the second radiation branch 7, and when the foldable electronic device 100 is in the folded state, the equivalent electrical length of at least part of the first parasitic branch 8 under the cooperation of the first matching unit M1 can at least meet the resonance requirements of the first frequency band, so that at least part of the branches of the first parasitic branch 8 at least serves as the parasitic branch of the first radiation branch 5.

[0076] In some embodiments, the length of the first connecting stub 9 is relatively short and has little impact on resonance compared to the length of at least part of the first parasitic stub 8. Therefore, it is only necessary that the equivalent electrical length of at least part of the first parasitic stub 8 under the cooperation of the first matching unit M1 satisfies the resonance requirements of the second frequency band, so that at least part of the branches of the first parasitic stub 8 serve as the parasitic stub of the second radiation stub 7, and / or the equivalent electrical length of at least part of the first parasitic stub 8 under the cooperation of the first matching unit M1 satisfies the resonance requirements of the first frequency band, so that at least part of the branches of the first parasitic stub 8 serve as the parasitic stub of the first radiation stub 5.

[0077] In some embodiments, it is also possible that the equivalent electrical length of at least part of the first parasitic stub 8 and the first connecting stub 9 together under the cooperation of the first matching unit M1 satisfies the resonance requirements of the second frequency band, so that at least part of the branches of the first parasitic stub 8 and the first connecting stub 9 together serve as the parasitic stub of the second radiation stub 7, and / or the equivalent electrical length of at least part of the first parasitic stub 8 and the first connecting stub 9 together under the cooperation of the first matching unit M1 satisfies the resonance requirements of the first frequency band, so that at least part of the branches of the first parasitic stub 8 and the first connecting stub 9 together serve as the parasitic stub of the first radiation stub 5.

[0078] In some embodiments, when the foldable electronic device 100 is in the folded state and only the at least part of the branches of the first parasitic stub 8 needs to serve as the parasitic stub of the first radiation stub 5 at least, the first switch unit 10 can also be disconnected when the foldable electronic device 100 is in the folded state.

[0079] Wherein, the first switch unit 10 may include a single-pole single-throw switch. When the first switch unit 10 is turned on, the electrical connection between the first connecting stub 9 and the first parasitic stub 8 is turned on, that is, the electrical connection between the first connecting stub 9 and the first parasitic stub 8 is established. When the first switch unit 10 is turned off, the electrical connection between the first connecting stub 9 and the first parasitic stub 8 is disconnected.

[0080] Wherein, Figure 5 The difference from the foregoing embodiments is that the foldable electronic device 100 further includes the first connecting stub 9 and the first switch unit 10, and other structures can refer to the relevant content of the foregoing embodiments.

[0081] Please refer to Figure 6 , which is another schematic plan view showing part of the internal structure of the foldable electronic device 100 in the unfolded state in some embodiments of the present application. Wherein, Figure 6It may also specifically be an internal structure schematic diagram showing a partial structure after removing the housing of the first main body portion 1 and the second main body portion 2.

[0082] Among them, as Figure 6 shown, the foldable electronic device 100 further includes a second parasitic stub 11. The second parasitic stub 11 is disposed on the first main body portion 1, is spaced apart from and coupled to the first radiating stub 5, and serves as a parasitic stub of the first radiating stub 5 at least when the foldable electronic device 100 is in an unfolded state. Among them, when the foldable electronic device 100 is in a folded state, the first main body portion 1 and the second main body portion 2 are stacked, and at least a part of the projections of the second radiating stub 7 and the second parasitic stub 11 in the stacking direction of the first main body portion 1 and the second main body portion 2 overlap, and the second parasitic stub 11 is coupled to the second radiating stub 7 and serves as a parasitic stub of the second radiating stub 7.

[0083] That is, in some embodiments, the foldable electronic device 100 further includes a second parasitic stub 11. The second parasitic stub 11 and the first radiating stub 5 are both disposed on the first main body portion 1, are spaced apart from and coupled to each other, and the second parasitic stub 11 serves as a parasitic stub of the first radiating stub 5 at least when the foldable electronic device 100 is in an unfolded state, so as to effectively improve the radiation performance of the first frequency band. When the foldable electronic device 100 is in a folded state, the second parasitic stub 11 can also at least serve as a parasitic stub of the second radiating stub 7, and effectively improve the radiation performance of the second frequency band. Therefore, the antenna performance of the foldable electronic device 100 in various states can be further effectively improved.

[0084] Among them, in some embodiments, when the foldable electronic device 100 is in an unfolded state, at least a part of the branches of the second parasitic stub 11 resonate at the first frequency band, so that at least a part of the branches of the second parasitic stub 11 serve as parasitic stubs of the first radiating stub 5. When the foldable electronic device 100 is in a folded state, at least a part of the branches of the second parasitic stub 11 at least resonate at the second frequency band, so that at least a part of the branches of the second parasitic stub 11 at least serve as parasitic stubs of the second radiating stub 7.

[0085] That is, in some embodiments, the second parasitic stub 11, as a parasitic stub of the first radiating stub 5, may mean that at least some of the branches of the second parasitic stub 11 can be used as parasitic stubs of the second radiating stub 7. Among them, at least some of the branches of the second parasitic stub 11 are resonant in the first frequency band, and can support the transceiver of electromagnetic wave signals in the first frequency band under the coupled excitation of the first feed 4, thereby improving the radiation performance in the first frequency band. Among them, the second parasitic stub 11, as a parasitic stub of the second radiating stub 7, may mean that at least some of the branches of the second parasitic stub 11 can be used as parasitic stubs of the second radiating stub 7. Among them, at least some of the branches of the second parasitic stub 11 are resonant in the second frequency band, and can also support the transceiver of electromagnetic wave signals in the second frequency band under the coupled excitation of the second feed 6, thereby improving the radiation performance in the second frequency band.

[0086] In some embodiments, as Figure 6 shown, the foldable electronic device 100 further includes a second matching unit M2. The second parasitic stub 11 includes at least one matching point P2. The second matching unit M2 is connected between at least one matching point P2 of the second parasitic stub 11 and the ground GND. When the foldable electronic device 100 is in the unfolded state, the equivalent electrical length of at least some of the second parasitic stub 11 with the cooperation of the second matching unit M2 meets the resonance requirement of the first frequency band, so that at least some of the branches of the second parasitic stub 11 serve as parasitic stubs of the first radiating stub 5; when the foldable electronic device 100 is in the folded state, the equivalent electrical length of at least some of the second parasitic stub 11 with the cooperation of the second matching unit M2 at least meets the resonance requirement of the second frequency band, so that at least some of the branches of the second parasitic stub 11 at least serve as parasitic stubs of the second radiating stub 7.

[0087] That is, in some embodiments, through the second matching unit M2, when the foldable electronic device 100 is in the unfolded state, the equivalent electrical length of at least some of the second parasitic stub 11 with the cooperation of the second matching unit M2 can meet the resonance requirement of the first frequency band, so that at least some of the branches of the first parasitic stub 8 serve as parasitic stubs of the first radiating stub 5, and when the foldable electronic device 100 is in the folded state, the equivalent electrical length of at least some of the second parasitic stub 11 with the cooperation of the second matching unit M2 at least meets the resonance requirement of the first frequency band, so that at least some of the second parasitic stub 11 at least serve as parasitic stubs of the second radiating stub 7.

[0088] Among them, as Figure 6As shown, one end of the second parasitic branch 11 is open circuited to form an open circuit end, and the other end is grounded to form a grounding end, and the grounding end of the second parasitic branch 11 is arranged close to the rotating member 3. Therefore, when the foldable electronic device 100 is in a folded state, the projections of the second radiation branch 7 and the second parasitic branch 11 in the stacking direction of the first body part 1 and the second body part 2 at least partially overlap, and the grounding end of the second radiation branch 7 and the grounding end of the second parasitic branch 11 are located on the same side, thereby facilitating the formation of coupling excitation so that the second parasitic branch 11 generates a current in the same direction as the current on the second radiation branch 7, and facilitating the improvement of the radiation performance in the first frequency band.

[0089] The structures of the second matching unit M2 and the second parasitic branch 11 may be the same as the structures of the first matching unit M1 and the first parasitic branch 8. For details, please refer to the above Figure 3 or Figure 4 The relevant structures in will not be repeated here.

[0090] in, Figure 6 The foldable electronic device 100 shown may be Figure 5 Based on the further addition of the second parasitic branch 11, it is obvious that Figure 6 The second parasitic branch 11 may also be added on the basis of the foldable electronic device 100 of any of the aforementioned embodiments.

[0091] See also Figure 7 , is another plan view schematically showing a part of the internal structure of the foldable electronic device 100 in some embodiments of the present application in an unfolded state. Figure 7 It may also be a schematic diagram of the internal structure showing a partial structure after the shells of the first main body portion 1 and the second main body portion 2 are removed.

[0092] like Figure 7 As shown, in some embodiments, the foldable electronic device 100 also includes a second connecting branch 12 and a second switching unit 13, the second connecting branch 12 is arranged on the first main body 1, and is located between the first radiating branch 5 and the second parasitic branch 11 and is spaced apart from the first radiating branch 5 and the second parasitic branch 11, the second connecting branch 12 is connected to the second parasitic branch 11 through the second switching unit 13, wherein the second switching unit is turned on at least when the first radiating branch 5 supports the reception and transmission of electromagnetic wave signals in the first frequency band under the excitation of the first feed source 4, and an electrical connection is established between the second connecting branch 12 and the second parasitic branch 11, so that the second parasitic branch 11 is coupled to the first radiating branch 5 through the second connecting branch 12.

[0093] That is, in some embodiments, the foldable electronic device 100 further includes a second connecting branch 12 located between the first radiation branch 5 and the second parasitic branch 11 and further includes the second switch unit 13, and the second connecting branch 12 is connected to the second parasitic branch 11 through the second switch unit 13. Thus, when there is a gap between the first radiation branch 5 and the second parasitic branch 11, coupling can occur, but the gap is relatively large and the coupling effect is not particularly good. In this case, the electrical connection between the second connecting branch 12 and the second parasitic branch 11 can be turned on / established to enhance the coupling between the first radiation branch 5 and the second parasitic branch 11, which is beneficial to improving the radiation performance of the first frequency band.

[0094] Wherein, the second switch unit 13 can also establish the electrical connection between the second connecting branch 12 and the second parasitic branch 11 when the second parasitic branch 11 is required to be the parasitic branch of the first radiation branch 5, so that the second parasitic branch 11 is coupled to the second radiation branch 7 through the second connecting branch 12. For example, the first switch unit 10 can at least establish the electrical connection between the second connecting branch 12 and the second parasitic branch 11 when the foldable electronic device 100 is in the unfolded state, so that the second parasitic branch 11 is coupled to the first radiation branch 5 through the second connecting branch 12.

[0095] Wherein, the second switch unit 13 can also include a single-pole single-throw switch. When the second switch unit 13 is turned on, the electrical connection between the second connecting branch 12 and the second parasitic branch 11 is turned on, that is, the electrical connection between the second connecting branch 12 and the second parasitic branch 11 is established. When the second switch unit 13 is turned off, the electrical connection between the second connecting branch 12 and the second parasitic branch 11 is disconnected.

[0096] Wherein, Figure 7 the foldable electronic device 100 shown can be further added with a second connecting branch 12 and a second switch unit 13 on the basis of Figure 6 Obviously, Figure 7 the second connecting branch 12 and the second switch unit 13 can also be added on the basis of the foldable electronic device 100 in any of the foregoing embodiments.

[0097] Wherein, the structures and functions of the second connecting branch 12 and the second switch unit 13 are similar to those of the first connecting branch 9 and the first switch unit 10 described above. For more specific content, reference can also be made to the relevant content of the first connecting branch 9 and the first switch unit 10 described above.

[0098] Please refer to Figure 8, is another schematic plan view showing a partial internal structure of the foldable electronic device 100 in the unfolded state in some embodiments of the present application. Among them, Figure 8 It may also specifically be an internal structure schematic diagram showing a partial structure after removing the housing of the first main body portion 1 and the second main body portion 2.

[0099] Among them, Figure 8 It may be Figure 1 Based on the foldable electronic device 100 shown, further structures are schematically shown and different positions of some structures are schematically shown.

[0100] Such as Figure 8 shown, in some embodiments, the foldable electronic device further includes a third parasitic stub 14, the third parasitic stub 14 is disposed on the second main body portion 2, the second radiating stub 7 is located between the first parasitic stub 8 and the third parasitic stub 14, the third parasitic stub 14 is spaced apart from and coupled to the second radiating stub 7, and at least when the foldable electronic device 100 is in the unfolded state, serves as a parasitic stub of the second radiating stub 7.

[0101] That is, in some embodiments, the foldable electronic device 100 further includes a third parasitic stub 14, the second radiating stub 7 is located between the first parasitic stub 8 and the third parasitic stub 14, and the second radiating stub 7 can be coupled to both the first parasitic stub 8 and the third parasitic stub 14. Thus, at least when the foldable electronic device 100 is in the unfolded state, in addition to the first parasitic stub 8 serving as a parasitic stub of the second radiating stub 7, the third parasitic stub 14 can also serve as a parasitic stub of the second radiating stub 7. Therefore, the radiation performance of the first frequency band can be effectively improved.

[0102] Among them, in some embodiments, such as Figure 8 shown, the third parasitic stub 14 is also disposed at the third end portion D13 at the bottom end of the second main body portion 2. One end of the third parasitic stub 14 is an open end and the other end is a grounded end. The grounded end of the third parasitic stub 14 is close to the rotating member 3, and the open end of the third parasitic stub 14 is adjacent to and spaced from the second radiating stub 7.

[0103] Among them, such as Figure 8 shown, in some embodiments, the third end 7a of the second radiating stub 7 is a grounded end, the fourth end 7b is an open end, and the third end 7a of the second radiating stub 7 that is the grounded end is adjacent to and spaced from the first parasitic end 8a of the first parasitic stub 8 that is the open end. The fourth end 7b of the second radiating stub 7 that is the open end is adjacent to and spaced from the open end of the third parasitic stub 14.

[0104] Among them, when the open ends of two branches are adjacent and spaced apart, the main coupling between them is electric field coupling, and when the open end of one branch is adjacent and spaced apart from the grounded end of another branch, the two can be magnetic field coupling. Therefore, in some embodiments, the second radiation branch 7 can be coupled to the first parasitic branch 8 in a magnetic field coupling manner and coupled to the third parasitic branch 14 in an electric field coupling manner.

[0105] Obviously, in some embodiments, the third end 7a of the second radiation branch 7 can be an open end and be adjacent and spaced apart from the first parasitic end 8a which is an open end of the first parasitic branch 8, and the fourth end 7b of the second radiation branch 7 is a grounded end and is adjacent and spaced apart from the open end of the third parasitic branch 14. Thus, the second radiation branch 7 can be coupled to the first parasitic branch 8 in an electric field coupling manner and coupled to the third parasitic branch 14 in a magnetic field coupling manner.

[0106] Please refer to Figure 9 , which is a further planar schematic diagram showing part of the internal structure when the foldable electronic device 100 in some embodiments of the present application is in the unfolded state. Among them, Figure 9 It can also be specifically an internal structure schematic diagram showing part of the structure after removing the housing of the first body part 1 and the second body part 2.

[0107] Among them, Figure 9 It can be Figure 8 On the basis of the foldable electronic device 100 shown, a further structure is schematically shown.

[0108] In some embodiments, as Figure 9 shown, the foldable electronic device 100 further includes a third feed source 15 and a third radiation branch 16. The third radiation branch 16 is disposed on the first body part 1. The third radiation branch 16 includes a third feeding point F3. The third feeding point F3 is connected to the third feed source 15. The third radiation branch 16 supports the transceiver of electromagnetic wave signals in the third frequency band under the excitation of the third feed source 15. Among them, when the foldable electronic device 100 is in the folded state, the first body part 1 and the second body part 2 are stacked, and the projections of the third radiation branch 16 and the third parasitic branch 14 in the stacking direction of the first body part 1 and the second body part 2 at least partially overlap. The third parasitic branch 14 is coupled to the third radiation branch 16 and at least serves as a parasitic branch of the third radiation branch 16.

[0109] That is, in some embodiments, the foldable electronic device 100 further includes a third feeder 15 and a third radiation stub 16. The third radiation stub 16 supports the transceiver of electromagnetic wave signals in a third frequency band under the excitation of the third feeder 15. When the foldable electronic device 100 is in a folded state, the third parasitic stub 14 is also coupled to the third radiation stub 16 and at least serves as a parasitic stub of the third radiation stub 16. Thus, the number of frequency bands supported by the foldable electronic device 100 can be increased within a limited space to meet the requirements of multiple frequency bands, or the radiation performance of the corresponding frequency band can be improved. When the foldable electronic device 100 is in a folded state, the third parasitic stub 14 is also coupled to the third radiation stub 16 and at least serves as a parasitic stub of the third radiation stub 16, and the radiation performance of the third frequency band can be effectively improved.

[0110] Wherein, the third frequency band can be different from both the first frequency band and the second frequency band to increase the number of frequency bands supported by the foldable electronic device 100 to meet the requirements of multiple frequency bands, or the third frequency band can also be one of the first frequency band and the second frequency band to improve the radiation performance of the corresponding frequency band.

[0111] In some embodiments, when the foldable electronic device 100 is in an unfolded state, at least some branches of the third parasitic stub 14 are resonant in the second frequency band, so that at least some branches of the third parasitic stub 14 serve as parasitic stubs of the second radiation stub 7; when the foldable electronic device 100 is in a folded state, at least some branches of the third parasitic stub 14 are at least resonant in the third frequency band, so that at least some branches of the third parasitic stub 14 at least serve as parasitic stubs of the third radiation stub 16.

[0112] That is, in some embodiments, the third parasitic stub 14 serving as a parasitic stub of the second radiation stub 7 may mean that at least some branches of the third parasitic stub 14 can serve as parasitic stubs of the second radiation stub 7. Among them, at least some branches of the third parasitic stub 14 are resonant in the second frequency band and can support the transceiver of electromagnetic wave signals in the second frequency band under the coupled excitation of the second feeder 6, thereby improving the radiation performance of the second frequency band. Among them, the third parasitic stub 14 serving as a parasitic stub of the third radiation stub 16 may mean that at least some branches of the third parasitic stub 14 can serve as parasitic stubs of the third radiation stub 16. Among them, at least some branches of the third parasitic stub 14 are resonant in the third frequency band and can also support the transceiver of electromagnetic wave signals in the third frequency band under the coupled excitation of the third feeder 15, thereby improving the radiation performance of the third frequency band.

[0113] In some embodiments, such as Figure 9 shown, the foldable electronic device further includes a third matching unit M3. The third parasitic stub 14 includes at least one matching point P3. The third matching unit M3 is connected between at least one matching point P3 of the third parasitic stub 14 and the ground GND. When the foldable electronic device 100 is in the unfolded state, the equivalent electrical length of at least part of the third parasitic stub 14 with the cooperation of the third matching unit M3 meets the resonance requirement of the second frequency band, so that at least part of the branches of the third parasitic stub 14 serves as the parasitic branches of the second radiation branch 7. Wherein, when the foldable electronic device 100 is in the folded state, the equivalent electrical length of at least part of the third parasitic stub 14 with the cooperation of the third matching unit M3 at least meets the resonance requirement of the third frequency band, so that at least part of the branches of the third parasitic stub 14 at least serves as the parasitic branches of the third radiation branch 16.

[0114] That is, in some embodiments, through the third matching unit M3, when the foldable electronic device 100 is in the unfolded state, the equivalent electrical length of at least part of the third parasitic stub 14 with the cooperation of the third matching unit M3 can meet the resonance requirement of the second frequency band, so that at least part of the branches of the third parasitic stub 14 serves as the parasitic branches of the second radiation branch 7, and when the foldable electronic device 100 is in the folded state, the equivalent electrical length of at least part of the third parasitic stub 14 with the cooperation of the third matching unit M3 at least meets the resonance requirement of the third frequency band, so that at least part of the branches of the third parasitic stub 14 at least serves as the parasitic branches of the third radiation branch 16.

[0115] Wherein, as Figure 9 shown, and as described above, the third parasitic stub 14 is disposed at the third end D13 at the bottom of the second body portion 2. One end of the third parasitic stub 14 is open and is the open end, and the other end is grounded and is the grounded end, and the grounded end of the third parasitic stub 14 is close to the rotating member 3. In addition, as Figure 9 shown, the third radiation branch 16 is disposed at the first end D11 at the bottom of the first body portion 1, and one end of the third radiation branch 16 is open and is the open end, and the other end is grounded and is the grounded end, and the grounded end of the third radiation branch 16 is close to the rotating member 3.

[0116] Thus, when the foldable electronic device 100 is in a folded state, the projections of the third radiation branch 16 and the third parasitic branch 14 in the stacking direction of the first main body portion 1 and the second main body portion 2 at least partially overlap, and the grounding end of the third radiation branch 16 and the grounding end of the third parasitic branch 14 are located on the same side, thereby facilitating the formation of coupling excitation to cause the third parasitic branch 14 to generate a current in the same direction as the current on the third radiation branch 16, which is beneficial to improving the radiation performance in the third frequency band.

[0117] Among them, Figure 9 As shown, the third radiation branch 16 also roughly forms an inverted F antenna. Under the excitation of the third feed source 15, the third radiation branch 16 works in a quarter-wavelength resonance mode to support the transmission and reception of electromagnetic wave signals in the third frequency band.

[0118] The structures of the third matching unit M3 and the third parasitic branch 14 may be the same as the structures of the first matching unit M1 and the first parasitic branch 8. For details, please refer to the aforementioned Figure 3 or Figure 4 The relevant structures in will not be repeated here.

[0119] Among them, as mentioned above, Figure 9 Can be in Figure 8 A further structure is illustrated on the basis of the foldable electronic device 100 shown. For other related structures, reference may be made to the related contents of any of the aforementioned embodiments.

[0120] See also Figure 10 , is another further plan view schematically showing a part of the internal structure of the foldable electronic device 100 in some embodiments of the present application in an unfolded state. Figure 10 It may also be a schematic diagram of the internal structure showing a partial structure after the shells of the first main body portion 1 and the second main body portion 2 are removed.

[0121] in, Figure 10 Can be in Figure 9 A further structure is illustrated based on the foldable electronic device 100 shown.

[0122] like Figure 10As shown, in some embodiments, the foldable electronic device 100 further includes a fourth parasitic stub 17. The fourth parasitic stub 17 is disposed on the first body portion 1 and is located between the third radiation stub 16 and the first radiation stub 5 and is spaced apart from the third radiation stub 16 and the first radiation stub 5. Wherein, when the foldable electronic device 100 is in a folded state, the first body portion 1 and the second body portion 2 are stacked. The projections of the second radiation stub 7 and the fourth parasitic stub 17 in the stacking direction of the first body portion 1 and the second body portion 2 at least partially overlap. The fourth parasitic stub 17 is coupled to the second radiation stub 7 and serves as a parasitic stub of the second radiation stub 7.

[0123] That is, in some embodiments, the foldable electronic device 100 further includes a fourth parasitic stub 17. When the foldable electronic device 100 is in a folded state, the fourth parasitic stub 17 is coupled to the second radiation stub 7 and serves as a parasitic stub of the second radiation stub 7. Thus, when the foldable electronic device 100 is in a folded state, the radiation performance of the second frequency band can be effectively improved.

[0124] In some embodiments, as Figure 10 shown, the fourth parasitic stub 17 is disposed at the first end D11 at the bottom of the first body portion 1. One end of the fourth parasitic stub 17 is open and is an open end, and the other end is grounded and is a grounded end. The open end of the fourth parasitic stub 17 is disposed close to the third radiation stub 16.

[0125] Thus, when the foldable electronic device 100 is in a folded state, the projections of the second radiation stub 7 and the fourth parasitic stub 17 in the stacking direction of the first body portion 1 and the second body portion 2 at least partially overlap, and the grounded ends of the second radiation stub 7 and the fourth parasitic stub 17 are on the same side. Thus, it is beneficial to form a coupling to excite the fourth parasitic stub 17 to generate a co-directional current in the same direction as the current on the second radiation stub 7, which is beneficial to improving the radiation performance of the second frequency band.

[0126] In some embodiments, the fourth parasitic stub 17 is further coupled to at least the third radiation stub 16 and serves as a parasitic stub of the third radiation stub 16 at least when the foldable electronic device 100 is in an unfolded state.

[0127] That is, in some embodiments, the fourth parasitic stub 17 can not only serve as a parasitic stub of the second radiation stub 7 when the foldable electronic device 100 is in a folded state, but also at least serve as a parasitic stub of the third radiation stub 16 when the foldable electronic device 100 is in an unfolded state. Thus, the radiation performance of the third frequency band can be further improved.

[0128] In some embodiments, when the foldable electronic device 100 is in an unfolded state, at least some of the branches of the third parasitic stub 14 resonate at least in the third frequency band, so that at least some of the branches of the third parasitic stub 14 serve as at least parasitic stubs of the third radiation stub 16; when the foldable electronic device 100 is in a folded state, at least some of the branches of the fourth parasitic stub 17 resonate in the second frequency band, so that at least some of the branches of the fourth parasitic stub 17 serve as parasitic stubs of the second radiation stub 7.

[0129] That is, in some embodiments, the fourth parasitic stub 17 serving as a parasitic stub of the second radiation stub 7 may mean that at least some of the branches of the fourth parasitic stub 17 can serve as parasitic stubs of the second radiation stub 7, wherein at least some of the branches of the fourth parasitic stub 17 resonate in the second frequency band and can support the transceiver of electromagnetic wave signals in the second frequency band under the coupled excitation of the second feed 6, thereby improving the radiation performance of the second frequency band. Among them, the fourth parasitic stub 17 serving as a parasitic stub of the third radiation stub 16 may mean that at least some of the branches of the fourth parasitic stub 17 can serve as parasitic stubs of the third radiation stub 16, wherein at least some of the branches of the fourth parasitic stub 17 resonate in the third frequency band and can also support the transceiver of electromagnetic wave signals in the third frequency band under the coupled excitation of the third feed 15, thereby improving the radiation performance of the third frequency band.

[0130] Among them, in some embodiments, such as Figure 10As shown, the fourth parasitic branch 17 may further include at least one matching point P4, and the foldable electronic device 100 may further include a fourth matching unit M4, the fourth matching unit M4 is connected between at least one matching point P4 of the fourth parasitic branch 17 and the ground GND, when the foldable electronic device 100 is in the unfolded state, the equivalent electrical length of at least part of the fourth parasitic branch 17 under the cooperation of the fourth matching unit M4 meets the resonance requirement of the third frequency band, so that at least part of the branches of the fourth parasitic branch 17 serve as parasitic branches of the third radiation branch 16. Wherein, when the foldable electronic device 100 is in the folded state, the equivalent electrical length of at least part of the fourth parasitic branch 17 under the cooperation of the fourth matching unit M4 at least meets the resonance requirement of the second frequency band, so that at least part of the branches of the fourth parasitic branch 17 serve as at least parasitic branches of the second radiation branch 7.

[0131] That is, in some embodiments, through the fourth matching unit M4, when the foldable electronic device 100 is in the unfolded state, the equivalent electrical length of at least part of the fourth parasitic branch 17 with the cooperation of the fourth matching unit M4 meets the resonance requirement of the third frequency band, so that at least part of the fourth parasitic branch 17 serves as a parasitic branch of the third radiation branch 16; and when the foldable electronic device 100 is in the folded state, the equivalent electrical length of at least part of the fourth parasitic branch 17 with the cooperation of the fourth matching unit M4 at least meets the resonance requirement of the second frequency band, so that at least part of the fourth parasitic branch 17 serves as at least a parasitic branch of the second radiation branch 7.

[0132] In some embodiments, the ground end of the fourth parasitic branch 17 is adjacent to and spaced from the first radiation branch 5, and magnetic field coupling may occur to a certain extent. Therefore, in some embodiments, the fourth parasitic branch 17 may further serve as a parasitic branch of the first radiation branch 5 at least when the foldable electronic device 100 is in the unfolded state. Thus, the radiation performance of the first frequency band may be further improved.

[0133] That is, in some embodiments, when the foldable electronic device 100 is in the unfolded state, the equivalent electrical length of at least part of the fourth parasitic branch 17 under the cooperation of the fourth matching unit M4 can also meet the resonance requirements of the first frequency band, and serve as a parasitic branch of the first radiation branch 5. Thus, the radiation performance of the first frequency band can be further improved.

[0134] The structures of the fourth matching unit M4 and the fourth parasitic branch 17 may be the same as the structures of the first matching unit M1 and the first parasitic branch 8. For details, please refer to the above-mentioned Figure 3or Figure 4 The related structures in it will not be elaborated here.

[0135] Among them, as described above, in some embodiments, the first end D11 where a part of the first radiation stub 5 is located and the third end D13 where a part of the first parasitic stub 8 is located can jointly form the bottom end of the foldable electronic device 100. That is, a part of the first radiation stub 5 is located at the side end of the foldable electronic device 100, and another part is located at the bottom end of the foldable electronic device 100. A part of the first parasitic stub is also located at the side end of the foldable electronic device 100, and another part is located at the bottom end of the foldable electronic device 100. The second radiation stub 7 can be located at the bottom end of the second body part 2 or form the third end D13 that constitutes the bottom end.

[0136] Among them, as shown in the related drawings described above, when the foldable electronic device 100 further includes the second parasitic stub 11, the third parasitic stub 14, the third radiation stub 16 and other stubs, these stubs are also all located at the bottom end of the corresponding body part.

[0137] In some embodiments, the first end D11 where a part of the first radiation stub 5 is located and the third end D13 where a part of the first parasitic stub 8 is located can also jointly form the top end of the foldable electronic device 100. That is, in some embodiments, a part of the first radiation stub 5 is located at the side end of the foldable electronic device 100, and another part is located at the top end of the foldable electronic device 100. A part of the first parasitic stub 8 is also located at the side end of the foldable electronic device 100, and another part is located at the top end of the foldable electronic device 100. The second radiation stub 7, and when the foldable electronic device 100 further includes the second parasitic stub 11, the third parasitic stub 14, the third radiation stub 16 and other stubs, these stubs are all located at the top end of the corresponding body part.

[0138] In some embodiments, as Figure 1 , Figure 5 and other drawings show, the foldable electronic device 100 further includes a first ground plane 101 located in the first body part 1 and a second ground plane 201 located in the second body part 2. The aforementioned grounding can be grounded by connecting to the first ground plane 101 or the second ground plane 201. For example, the fourth end 7b of the second radiation stub 7 and the like can be grounded by connecting to the second ground plane 201.

[0139] In some embodiments, the first ground plane 101 and the second ground plane 201 can be a middle frame and are also used to carry the display screens in the first body part 1 and the second body part 2.

[0140] In some embodiments, a USB interface is provided at the first end portion D11 which is the bottom of the first body portion 1. That is, in some embodiments, the first body portion 1 may be the part of the foldable electronic device where the USB interface is provided. In other embodiments, a USB interface may also be provided at the third end portion D13 which is the bottom of the second body portion 2, that is, the first body portion 1 may also be the part of the foldable electronic device where the USB interface is provided.

[0141] In some embodiments, as Figure 1 shown, the foldable electronic device 100 further includes a frame 200 which surrounds the foldable electronic device 100 on all sides. Among them, in some embodiments, the first radiation branch 5, the second radiation branch 7, the first parasitic branch 8, etc. may be metal segments provided on the frame 200. Among them, there may be a gap X1 between the first radiation branch 5, the second radiation branch 7, the first parasitic branch 8 and other branches or between the first radiation branch 5, the second radiation branch 7, the first parasitic branch 8 and other branches and their adjacent branches, and independent branches are formed by isolating through the gap X1.

[0142] In some embodiments, the frame 200 of the foldable electronic device 100 is a metal frame, and the first radiation branch 5 etc. are formed by the metal frame of the first body portion 1, and the second radiation branch 7, the first parasitic branch 8, etc. are formed by the metal frame of the second body portion 2.

[0143] That is, the first radiation branch 5, the second radiation branch 7, the first parasitic branch 8 and other branches are multiple independent metal frame segments formed by isolating the metal frame of the foldable electronic device 100 by opening the gap X1. For example, the first radiation branch 5 is an independent metal frame segment formed by opening a gap in the frame 200 which is the metal frame of the first body portion 1, and the second radiation branch 7 and the first parasitic branch 8 are independent metal frame segments formed by opening a gap in the frame 200 which is the metal frame of the second body portion 2, and so on.

[0144] In other embodiments, the frame 200 of the foldable electronic device 100 is a non-metal frame, the first radiation branch 5 etc. are metal segments provided in the frame 200 of the first body portion 1, and the second radiation branch 7, the first parasitic branch 8, etc. are metal segments provided in the frame 200 of the second body portion 2.

[0145] That is, in some other embodiments, the first radiating stub 5, the second radiating stub 7, the first parasitic stub 8, and other stubs are all metal segments disposed in the frame of the foldable electronic device 100. That is, they can be arranged in the form of metal inserts at the frame 200 of the foldable electronic device 100.

[0146] Furthermore, in some other embodiments, the frame 200 of the foldable electronic device 100 can also be a non-metal frame with relatively low electrical conductivity, such as plastic, plastic, or ceramic. The first radiating stub 5, the second radiating stub 7, the first parasitic stub 8, and other stubs are metal segments disposed in the frame 200 of the foldable electronic device 100.

[0147] Among them, when the frame 200 of the foldable electronic device 100 can also be a non-metal frame with relatively low electrical conductivity, such as plastic, plastic, or ceramic, the first radiating stub 5, the second radiating stub 7, the first parasitic stub 8, and other stubs can be embedded in the frame 200 of the foldable electronic device 100, or disposed on the inner side surface of the frame 200 of the foldable electronic device 100.

[0148] In some embodiments, the foldable electronic device 100 further includes an antenna bracket. The antenna bracket is made of an insulating material. The first radiating stub 5, the second radiating stub 7, the first parasitic stub 8, and other stubs can be fixed to the corresponding antenna brackets and fixed to a position of the electronic device close to the frame 200 through the antenna brackets.

[0149] As described above, the first body portion 1 includes a first ground plane 101, and the second body portion 2 includes a second ground plane 201. In some examples, the first radiating stub 5 and the like can be disposed on the first ground plane 101 through the antenna bracket and located at the corresponding end of the foldable electronic device 100. The second radiating stub 7, the first parasitic stub 8, and the like can be disposed on the second ground plane 201 through the antenna bracket and located at the corresponding end of the foldable electronic device 100.

[0150] In some other embodiments, the first radiating stub 5, the second radiating stub 7, the first parasitic stub 8, and other stubs can also be fixed to the frame 200 of the foldable electronic device through the antenna bracket and located at the corresponding end positions of the foldable electronic device 100.

[0151] That is, in some embodiments, the first radiating stub 5, the second radiating stub 7, the first parasitic stub 8, and other stubs are fixedly disposed on the antenna bracket formed of an insulating material, and then fixed to a suitable position in the electronic device 100 through the antenna bracket.

[0152] Among them, the first radiation stub 5, the second radiation stub 7, the first parasitic stub 8, and other stubs can be FPCs (flexible printed circuits) fixedly arranged on the antenna bracket or LDS (Laser-Direct-structuring) metal segments formed on the antenna bracket by laser laser technology, or PDS metal segments formed on the antenna bracket by PDS (Printing Direct Structure) technology (for example, metal segments are formed by printing conductive ink, conductive silver paste, etc. on the antenna bracket), and are fixed in the electronic device 100 through the antenna bracket.

[0153] In some embodiments, the antenna bracket can be made of LCP (Liquid Crystal Polymer). In other embodiments, the antenna bracket can be made of other insulating materials, for example, it can also be made of materials such as plastic, resin, and rubber.

[0154] Please refer to Figure 11 , which is a schematic structural diagram of a reference foldable electronic device 100' in an unfolded state. Among them, as Figure 11 shown, the reference foldable electronic device 100' includes a first body part 1', a second body part 2', a rotating member 3', a feeder 4', a first radiation stub 5', a feeder 6', and a second radiation stub 7'. Among them, the first radiation stub 5 is arranged on the first body part 1' and includes a feeding point F1', and the feeding point F1' is connected to the feeder 4'. The first radiation stub 5' operates in a half-wavelength dipole mode under the excitation of the feeder 4' to support the transceiver of electromagnetic wave signals in the first frequency band. The second radiation stub 7' is arranged on the second body part 2' and includes a feeding point F2', and the feeding point F2' is connected to the feeder 6'. The second radiation stub 7' operates in an IFA mode under the excitation of the feeder 6' to support the transceiver of electromagnetic wave signals in other frequency bands.

[0155] That is, in some embodiments, the reference foldable electronic device 100' does not include the first parasitic stub 8 and the like in the foldable electronic device 100 of the present application, but only includes the first radiation stub 5' and the second radiation stub 7' respectively arranged on the two body parts.

[0156] Please refer to Figure 12 , which is a schematic comparison diagram of the radiation efficiency and system total efficiency of the foldable electronic device 100 and the reference foldable electronic device 100' of some embodiments of the present application when operating in the second frequency band.

[0157] Among them, Figure 12 shows thatFigure 1 When the foldable electronic device 100 shown is operating in the second frequency band in the unfolded state, the radiation efficiency curve Sr1 and the total system efficiency curve St1 obtained through simulation tests, and Figure 11 When the reference foldable electronic device 100’ shown is operating in the second frequency band in the unfolded state, the radiation efficiency curve Sr1’ and the total system efficiency curve St1’ obtained through simulation tests. That is, Figure 12 In Figure 1 Taking the foldable electronic device 100 shown as an example for simulation tests, the radiation efficiency curve Sr1 and the total system efficiency curve St1 of the foldable electronic device 100 in the unfolded state are obtained.

[0158] Among them, Figure 12 Taking the frequency band with a center frequency of 1.176 GHz as the second frequency band as an example, that is, taking the GPS L5 frequency band as the second frequency band for illustration.

[0159] From Figure 12 It can be seen that for the foldable electronic device 100 of the present application, due to adding the first parasitic stub 8 as the parasite of the second radiation stub 7, when the foldable electronic device 100 is in the unfolded state and the second radiation stub 7 operates in the second frequency band, the radiation efficiency and the total system efficiency of the second frequency band are both significantly improved compared with the reference foldable electronic device 100’, with an improvement of approximately 1 dB in both cases.

[0160] Therefore, in the present application, by adding the first parasitic stub 8 as the parasite of the second radiation stub 7, when the foldable electronic device 100 is in the unfolded state, the radiation performance of the second frequency band can be effectively improved.

[0161] Please refer to Figure 13 , which is another comparison schematic diagram of the radiation efficiency and the total system efficiency of the foldable electronic device 100 and the reference foldable electronic device 100’ of some embodiments of the present application when operating in the second frequency band.

[0162] Among them, Figure 13 It shows that when the foldable electronic device 100 shown is operating in the second frequency band in the folded state, the radiation efficiency curve Sr2 and the total system efficiency curve St2 obtained through simulation tests, and Figure 1 When the reference foldable electronic device 100’ shown is operating in the second frequency band in the folded state, the radiation efficiency curve Sr2’ and the total system efficiency curve St2’ obtained through simulation tests. That is, Figure 11 In Figure 13 It is also taking Figure 1Taking the foldable electronic device 100 shown as an example for simulation testing, the radiation efficiency curve Sr2 and the total system efficiency curve St2 of the foldable electronic device 100 in the folded state are obtained.

[0163] Among them, Figure 13 Taking the second frequency band with a center frequency of 1.176 GHz as an example, that is, taking the second frequency band as the GPS L5 frequency band for illustration.

[0164] From Figure 13 It can be seen that for the foldable electronic device 100 of the present application, due to adding the first parasitic stub 8 as the parasite of the second radiation stub 7, when the foldable electronic device 100 is in the folded state and the second radiation stub 7 operates in the second frequency band, the radiation efficiency and the total system efficiency of the second frequency band are still significantly improved compared to the reference foldable electronic device 100', with an improvement of approximately 1 dB each.

[0165] Therefore, in the present application, by adding the first parasitic stub 8 as the parasite of the second radiation stub 7, the radiation performance of the second frequency band can be effectively improved when the foldable electronic device 100 is in the folded state.

[0166] Please refer to Figure 14 , which is another comparison schematic diagram of the radiation efficiency and the total system efficiency of the foldable electronic device 100 of some embodiments of the present application and the reference foldable electronic device 100' when operating in the second frequency band.

[0167] Among them, Figure 14 shows that when the foldable electronic device 100 shown in Figure 10 is in the folded state and operates in the second frequency band, the radiation efficiency curves Sr3, Sr4 and the total system efficiency curves St3, St4 obtained through simulation testing, and when the reference foldable electronic device 100' shown in Figure 11 is in the folded state and operates in the second frequency band, the radiation efficiency curve Sr3' and the total system efficiency curve St3' obtained through simulation testing. That is, Figure 14 in, taking the foldable electronic device 100 shown in Figure 10 as an example for simulation testing, the radiation efficiency curves Sr3, Sr4 and the total system efficiency curves St3, St4 of the foldable electronic device 100 in the folded state are obtained.

[0168] Among them, Figure 14 Taking the second frequency band with a center frequency of 1.176 GHz as an example, that is, taking the second frequency band as the GPS L5 frequency band for illustration.

[0169] Specifically, the radiation efficiency curve Sr3 and the total system efficiency curve St3 are obtained when the foldable electronic device 100 shown in Figure 10 is in a folded state, and at this time only the third parasitic stub 14 serves as the parasitic stub of the second radiation stub 7. The radiation efficiency curve Sr4 and the total system efficiency curve St4 are obtained when the foldable electronic device 100 shown in Figure 10 is in a folded state, and at this time both the third parasitic stub 14 and the first parasitic stub 8 serve as the parasitic stubs of the second radiation stub 7.

[0170] As can be seen from Figure 14 , for the foldable electronic device 100 of the present application, when only the third parasitic stub 14 serves as the parasitic stub of the second radiation stub 7 and the second radiation stub 7 operates in the second frequency band when the foldable electronic device 100 is in a folded state, the radiation efficiency and the total system efficiency of the second frequency band are still significantly improved compared to the reference foldable electronic device 100’, with an improvement of approximately 1 dB in both cases. When both the third parasitic stub 14 and the first parasitic stub 8 serve as the parasitic stubs of the second radiation stub 7, the radiation efficiency and the total system efficiency of the second frequency band are even more significantly improved compared to the reference foldable electronic device 100’, with an improvement of approximately 3 dB in both cases.

[0171] Therefore, in the present application, by adding the first parasitic stub 8 as the parasitic of the second radiation stub 7, the radiation performance of the second frequency band can be effectively improved when the foldable electronic device 100 is in a folded state. When both the third parasitic stub 14 and the first parasitic stub 8 serve as the parasitic stubs of the second radiation stub 7, the radiation performance of the second frequency band can be more effectively improved.

[0172] Please refer to Figure 15 for a further structural block diagram showing part of the internal structure of the foldable electronic device 100 in some embodiments of the present application. As shown in Figure 15 , the foldable electronic device 100 further includes a controller 110. That is, in addition to the structures and components in any of the foregoing embodiments, the foldable electronic device 100 further includes the controller 110.

[0173] The controller 110 is used to at least control the first parasitic stub 8 to serve as the parasitic stub of the second radiation stub 7 when the foldable electronic device 100 is in an unfolded state, and at least control the first parasitic stub 8 to serve as the parasitic stub of the second radiation stub 7 when the foldable electronic device 100 is in a folded state.

[0174] For example, the controller 110 can at least control the switch of the corresponding matching branch in the first matching unit M1 to be turned on or off, and at least control such that the first parasitic stub 8 serves as a parasitic stub of the second radiating stub 7 when the foldable electronic device 100 is in the unfolded state, and at least control such that the first parasitic stub 8 serves as a parasitic stub of the second radiating stub 7 when the foldable electronic device 100 is in the folded state.

[0175] In some embodiments, as Figure 15 shown, the foldable electronic device 100 further includes a sensor 112. Wherein, the sensor 112 can be used to detect whether the foldable electronic device 100 is currently in the unfolded state or the folded state to obtain a corresponding detection signal. The controller 110 is connected to the sensor 112 and is used to receive the detection signal and determine whether the foldable electronic device 100 is in the unfolded state or the folded state according to the detection signal.

[0176] For example, the sensor 112 can include an angle sensor, and detect the included angle between the first body 1 and the second body 2 in the foldable electronic device 100 to obtain a detection signal including the corresponding included angle information. The controller 110 receives the detection signal, and when it is determined according to the included angle information in the detection signal that the included angle between the first body 1 and the second body 2 is greater than a first angle, for example, 75°, it is determined that the foldable electronic device 100 is currently in the unfolded state, and when it is determined according to the included angle information in the detection signal that the included angle between the first body 1 and the second body 2 is less than a second angle, for example, 30°, it is determined that the foldable electronic device 100 is currently in the folded state.

[0177] In some embodiments, the first matching unit M1 can also be fixedly arranged such that at least part of the branches of the first parasitic stub 8 meet the resonance requirements of the first frequency band, and at least part of the branches meet the resonance requirements of the second frequency band, so that the conditions of serving as both the first radiating stub 5 and the second radiating stub 7 can be satisfied at the same time, and corresponding control does not need to be performed according to whether the foldable electronic device 100 is in the unfolded state or the folded state.

[0178] Wherein, the foldable electronic device 100 of the present application can be any foldable electronic device with an antenna such as a foldable mobile phone, a foldable computer, etc.

[0179] Wherein, the foldable electronic device 100 may further include components such as a memory, a display screen, etc., which are not described in detail because they have little relation to the improvement of the present application.

[0180] The foldable electronic device 100 of the present application can effectively improve the radiation performance of the second frequency band because at least the first parasitic stub 8 is added. The first parasitic stub 8 and the second radiation stub 7 are both disposed on the second body portion 2, and are spaced apart and coupled. And the first parasitic stub 8 serves as a parasitic stub of the second radiation stub 7 at least when the foldable electronic device 100 is in the unfolded state, so that the radiation performance of the second frequency band can be effectively improved. When the foldable electronic device 100 is in the folded state, the first parasitic stub 8 can at least serve as a parasitic stub of the first radiation stub 5, and effectively improve the radiation performance of the first frequency band. Therefore, the antenna performance of the foldable electronic device 100 in various states can be effectively improved. In addition, the radiation performance of the corresponding frequency band can be further improved by adding other parasitic stubs and radiation stubs and having corresponding structures.

[0181] Among them, each embodiment of the present application has its own emphasis. For components not described in detail in a certain embodiment, reference may be made to the corresponding descriptions of other embodiments.

[0182] The above description is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present application, and all should be covered by the protection scope of the present application; without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A foldable electronic device, characterized in that: include: The first body part; A second body portion; A rotating member connected between the first body portion and the second body portion, wherein the first body portion and the second body portion are rotatably connected through the rotating member; First feed source; A first radiation branch node is arranged on the first main body portion, the first radiation branch node comprises a first feeding point, the first feeding point is connected to the first feed source, and the first radiation branch node supports the transmission and reception of electromagnetic wave signals in a first frequency band under the excitation of the first feed source; Second feed source; a second radiation branch node, arranged at the second body portion, the second radiation branch node comprising a second feeding point, the second feeding point being connected to the second feed source, and the second radiation branch node supporting the transmission and reception of electromagnetic wave signals in a second frequency band under the excitation of the second feed source; A first parasitic branch, disposed on the second main body portion, spaced apart from and coupled to the second radiation branch, and serving as a parasitic branch of the second radiation branch at least when the foldable electronic device is in an unfolded state; Wherein, when the foldable electronic device is in a folded state, the first main body portion and the second main body portion are stacked, the projections of the first radiation branch and the first parasitic branch in the stacking direction of the first main body portion and the second main body portion at least partially overlap, and the first parasitic branch is coupled to the first radiation branch and at least serves as a parasitic branch of the first radiation branch.

2. The foldable electronic device according to claim 1, characterized in that: When the foldable electronic device is in an unfolded state, at least some of the first parasitic branches meet the resonance requirements in the second frequency band, so that at least some of the first parasitic branches serve as parasitic branches of the second radiation branches; When the foldable electronic device is in a folded state, at least some of the first parasitic branches at least satisfy the resonance in the first frequency band, so that at least some of the first parasitic branches at least serve as parasitic branches of the first radiation branches.

3. The foldable electronic device according to claim 2, characterized in that: The first parasitic branch includes at least one matching point, and the foldable electronic device further includes a first matching unit, the first matching unit is connected between at least one matching point of the first parasitic branch and ground, when the foldable electronic device is in an unfolded state, the equivalent electrical length of at least part of the first parasitic branch under the cooperation of the first matching unit meets the resonance requirement of the second frequency band, so that at least part of the first parasitic branch serves as a parasitic branch of the second radiation branch; When the foldable electronic device is in a folded state, the equivalent electrical length of at least part of the first parasitic branch in cooperation with the first matching unit at least meets the resonance requirement of the first frequency band, so that at least part of the first parasitic branch serves as at least a parasitic branch of the first radiation branch.

4. The foldable electronic device according to claim 3, characterized in that: The first parasitic branch includes a first parasitic end and a second parasitic end opposite to each other, at least the first parasitic end is an open end, the first parasitic end is adjacent to and spaced from the second radiation branch, at least one matching point of the first parasitic branch includes a first matching point and a second matching point, the first matching point and the second matching point are located between the first parasitic end and the second parasitic end, the first matching unit includes a first matching branch and a second matching branch, the first matching branch is connected between the first matching point and the ground, and the second matching branch is connected between the second matching point and the ground; when the foldable electronic device is in an unfolded state, the first matching branch is enabled, and the equivalent electrical length of the first branch portion between the first parasitic end and the first matching point of the first parasitic branch under the cooperation of the first matching branch meets the resonance requirement of the second frequency band, so that the first branch portion of the first parasitic branch serves as a parasitic branch of the second radiation branch; When the foldable electronic device is in a folded state, the second matching branch is enabled, and the equivalent electrical length of the second branch part between the first parasitic end and the second matching point of the first parasitic branch meets the resonance requirement of the first frequency band with the cooperation of the second matching branch, so that the second branch part of the first parasitic branch serves as a parasitic branch of the first radiation branch; or, the first matching branch is further enabled, and the equivalent electrical length of the first branch part with the cooperation of the first matching branch meets the resonance requirement of the second frequency band, so that the first branch part of the first parasitic branch also serves as a parasitic branch of the second radiation branch.

5. The foldable electronic device according to claim 1, characterized in that: The foldable electronic device also includes a first connecting branch and a first switching unit, wherein the first connecting branch is arranged on the second main body portion, and is located between the second radiating branch and the first parasitic branch and is spaced apart from the second radiating branch and the first parasitic branch, and the first connecting branch is connected to the first parasitic branch through the first switching unit, wherein the first switching unit is at least used to be turned on when the second radiating branch supports the reception and transmission of electromagnetic wave signals in the second frequency band under the excitation of the second feed source, to establish an electrical connection between the first connecting branch and the first parasitic branch, so that the first parasitic branch is coupled to the second radiating branch through the first connecting branch.

6. The foldable electronic device according to claim 1, characterized in that: The foldable electronic device also includes a second parasitic branch, which is arranged on the first main body portion, and is spaced apart and coupled to the first radiating branch, and serves as a parasitic branch of the first radiating branch at least when the foldable electronic device is in an unfolded state; wherein, when the foldable electronic device is in a folded state, the first main body portion and the second main body portion are stacked, and the projections of the second radiating branch and the second parasitic branch in the stacking direction of the first main body portion and the second main body portion at least partially overlap, and the second parasitic branch is coupled to the second radiating branch, and serves as a parasitic branch of the second radiating branch.

7. The foldable electronic device according to claim 6, characterized in that: When the foldable electronic device is in an unfolded state, at least some of the second parasitic branches meet the resonance requirements in the first frequency band, so that at least some of the second parasitic branches serve as parasitic branches of the first radiation branches; When the foldable electronic device is in a folded state, at least some of the second parasitic branches at least meet the resonance requirements in the second frequency band, so that at least some of the second parasitic branches at least serve as parasitic branches of the second radiation branches.

8. The foldable electronic device according to claim 7, characterized in that: The foldable electronic device further includes a second matching unit, the second parasitic branch includes at least one matching point, the second matching unit is connected between at least one matching point of the second parasitic branch and ground, when the foldable electronic device is in an unfolded state, the equivalent electrical length of at least part of the second parasitic branch under the cooperation of the second matching unit meets the resonance requirement of the first frequency band, so that at least part of the second parasitic branch serves as a parasitic branch of the first radiation branch; When the foldable electronic device is in a folded state, the equivalent electrical length of at least part of the second parasitic branch in cooperation with the second matching unit at least meets the resonance requirement of the second frequency band, so that at least part of the second parasitic branch serves as at least a parasitic branch of the second radiation branch.

9. The foldable electronic device according to claim 6, characterized in that: The foldable electronic device also includes a second connecting branch and a second switching unit, wherein the second connecting branch is arranged on the first main body and is located between the first radiating branch and the second parasitic branch, and the second connecting branch is connected to the second parasitic branch through the second switching unit, wherein the second switching unit is turned on at least when the first radiating branch supports the reception and transmission of electromagnetic wave signals in the first frequency band under the excitation of the first feed source, and establishes an electrical connection between the second connecting branch and the second parasitic branch, so that the second parasitic branch is coupled to the first radiating branch through the second connecting branch.

10. The foldable electronic device according to claim 1, characterized in that: The foldable electronic device also includes a third parasitic branch, which is arranged on the second main body portion, and the second radiating branch is located between the first parasitic branch and the second parasitic branch and is spaced apart from the first radiating branch and the second parasitic branch. The third parasitic branch is spaced apart from and coupled to the second radiating branch, and serves as a parasitic branch of the second radiating branch at least when the foldable electronic device is in an unfolded state.

11. The foldable electronic device according to claim 10, characterized in that: The foldable electronic device also includes a third feed source and a third radiating branch. The third radiating branch is arranged on the first main body portion. The third radiating branch includes a third feeding point. The third feeding point is connected to the third feed source. The third radiating branch supports the reception and transmission of electromagnetic wave signals in a third frequency band under the excitation of the third feed source. When the foldable electronic device is in a folded state, the first main body portion and the second main body portion are stacked, and the projections of the third radiating branch and the third parasitic branch in the stacking direction of the first main body portion and the second main body portion at least partially overlap. The third parasitic branch is coupled with the third radiating branch and serves as a parasitic branch of the third radiating branch.

12. The foldable electronic device according to claim 11, characterized in that: When the foldable electronic device is in an unfolded state, at least some of the third parasitic branches meet the resonance requirements in the second frequency band, so that at least some of the third parasitic branches serve as parasitic branches of the second radiation branches; When the foldable electronic device is in a folded state, at least some of the third parasitic branches at least meet the resonance requirements in the third frequency band, so that at least some of the third parasitic branches at least serve as parasitic branches of the third radiation branches.

13. The foldable electronic device according to claim 12, characterized in that: The foldable electronic device further includes a third matching unit, the third parasitic branch includes at least one matching point, the third matching unit is connected between at least one matching point of the third parasitic branch and ground, when the foldable electronic device is in an unfolded state, the equivalent electrical length of at least part of the third parasitic branch under the cooperation of the third matching unit meets the resonance requirement of the second frequency band, so that at least part of the third parasitic branch serves as a parasitic branch of the second radiation branch; When the foldable electronic device is in a folded state, the equivalent electrical length of at least part of the third parasitic branch under the cooperation of the third matching unit at least meets the resonance requirement of the third frequency band, so that at least part of the third parasitic branch at least serves as a parasitic branch of the third radiation branch.

14. The foldable electronic device according to claim 11, characterized in that: The foldable electronic device also includes a fourth parasitic branch, which is arranged on the first main body portion and is located between the third radiating branch and the first radiating branch. When the foldable electronic device is in a folded state, the first main body portion and the second main body portion are stacked, and the projections of the second radiating branch and the fourth parasitic branch in the stacking direction of the first main body portion and the second main body portion at least partially overlap. The fourth parasitic branch is coupled to the second radiating branch and serves as a parasitic branch of the second radiating branch.

15. The foldable electronic device according to claim 14, characterized in that: The fourth parasitic branch is also coupled to at least the third radiation branch, and serves as a parasitic branch of the third radiation branch at least when the foldable electronic device is in an unfolded state.

16. The foldable electronic device according to any one of claims 1 to 15, characterized in that: The first main body portion includes two first ends and two second ends parallel to the rotating member, the second main body portion includes two third ends and two fourth ends parallel to the rotating member, at least part of the first radiating branch is located at the first end of the first main body portion, at least part of the first parasitic branch is located at the third end of the second main body portion, and the first end of the first main body portion where the first radiating branch is located has the same orientation as the third end of the second main body portion where the first parasitic branch is located, and the second radiating branch is located at the third end where at least part of the first parasitic branch is located.

17. The foldable electronic device according to claim 1, characterized in that: The electronic device includes a frame, and the first radiation branch, the second radiation branch, and the first parasitic branch are metal segments arranged on the frame.

18. The foldable electronic device according to claim 1, characterized in that: The rotating member is a rotating shaft or a hinge.

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