Antenna System

Abstract

The present invention discloses an antenna system, comprising: a ground plane, a first non-conductor support element, a first antenna element, a second non-conductor support element, and a second antenna element. The first non-conductor support element is adjacent to the ground plane. The first antenna element is distributed on the first non-conductor support element, wherein the first antenna element is excited by a first signal source. The second non-conductor support element is adjacent to the ground plane. The second antenna element is distributed on the second non-conductor support element, wherein the second antenna element is excited by a second signal source. Both the first antenna element and the second antenna element can cover the broadband operating band of LTE / 5G.

Description

Technical Field

[0001] The present invention relates to an antenna system, and in particular to an antenna system supporting broadband operation. Background Art

[0002] With the development of mobile communication technology, mobile devices have become increasingly popular in recent years, such as portable computers, mobile phones, multimedia players and other hybrid portable electronic devices. In order to meet people's needs, mobile devices usually have wireless communication functions. Some cover long-distance wireless communication ranges, such as mobile phones using 2G, 3G, LTE (Long Term Evolution) systems and the 700MHz, 850MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, 2300MHz and 2500MHz frequency bands used for communication, while some cover short-distance wireless communication ranges, such as Wi-Fi, Bluetooth systems use 2.4GHz, 5.2GHz and 5.8GHz frequency bands for communication.

[0003] Antennas are indispensable components in the field of wireless communications. If the bandwidth of an antenna used to receive or transmit signals is insufficient, the communication quality of a mobile device can be easily degraded. Therefore, how to design a small-size, wide-bandwidth antenna system is an important issue for antenna designers. Summary of the invention

[0004] In a preferred embodiment, the present invention proposes an antenna system, comprising: a ground plane; a first non-conductor support element adjacent to the ground plane; a first antenna element distributed on the first non-conductor support element, wherein the first antenna element is excited by a first signal source; a second non-conductor support element adjacent to the ground plane; and a second antenna element distributed on the second non-conductor support element, wherein the second antenna element is excited by a second signal source; wherein the first antenna element and the second antenna element both cover a broadband operating band of LTE / 5G.

[0005] In some embodiments, the broadband operating band includes a first frequency range, a second frequency range, a third frequency range, and a fourth frequency range, the first frequency range is between 700MHz and 960MHz, the second frequency range is between 1710MHz and 2170MHz, the third frequency range is between 2300MHz and 2690MHz, and the fourth frequency range is between 3300MHz and 5000MHz.

[0006] In some embodiments, the first antenna element includes: a first feed portion coupled to the first signal source; a first radiating portion coupled to the first feed portion, wherein the first radiating portion has a notch area; a second radiating portion coupled to the ground plane and adjacent to the first radiating portion; and a third radiating portion coupled to the ground plane and adjacent to the first radiating portion; wherein the first feed portion is between the second radiating portion and the third radiating portion.

[0007] In some embodiments, the first radiation portion is in a rectangular shape, and the notch area is in a square shape.

[0008] In some embodiments, the second radiating portion is in a long straight bar shape, and the third radiating portion is in a short straight bar shape.

[0009] In some embodiments, the length of the first radiation portion is less than or equal to 0.5 times the wavelength of the first frequency range, the length of the second radiation portion is between 0.25 times and 0.5 times the wavelength of the third frequency range, and the length of the third radiation portion is between 0.25 times and 0.5 times the wavelength of the fourth frequency range.

[0010] In some embodiments, the second antenna element includes: a second feeding portion coupled to the second signal source; a fourth radiating portion coupled to the second feeding portion, wherein the fourth radiating portion includes an end forked structure; a fifth radiating portion coupled to the ground plane and adjacent to the fourth radiating portion; and a sixth radiating portion coupled to the ground plane; wherein the second feeding portion is between the fifth radiating portion and the sixth radiating portion.

[0011] In some embodiments, the end bifurcated structure of the fourth radiating portion includes a first rectangular widened portion and a second rectangular widened portion, and a monopole slot is formed between the first rectangular widened portion and the second rectangular widened portion.

[0012] In some embodiments, the fifth radiating portion is in an N-shape, and the sixth radiating portion is in an inverted J-shape.

[0013] In some embodiments, the total length of the second feeding portion and the fourth radiating portion is less than or equal to 0.5 times the wavelength of the first frequency range, the length of the fifth radiating portion is between 0.25 times and 0.5 times the wavelength of the third frequency range, and the length of the sixth radiating portion is between 0.25 times and 0.5 times the wavelength of the fourth frequency range. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional diagram of an antenna system according to an embodiment of the present invention;

[0015] Figure 2A plan view of a first antenna element according to an embodiment of the present invention;

[0016] Figure 3 is a return loss diagram of a first antenna element according to an embodiment of the present invention;

[0017] Figure 4 is a planar development diagram of a second antenna element according to an embodiment of the present invention;

[0018] Figure 5 is a return loss diagram of the second antenna element according to an embodiment of the present invention;

[0019] Figure 6 This is a diagram of isolation between the first antenna element and the second antenna element according to an embodiment of the present invention.

[0020] Explanation of symbols

[0021] 100: Antenna System

[0022] 110: Ground plane

[0023] 120: first non-conductor support element

[0024] 130: Second non-conductor support element

[0025] 191: First signal source

[0026] 192: Second signal source

[0027] 200: first antenna element

[0028] 210: First feed section

[0029] 211: first end of the first feeding portion

[0030] 212: second end of the first feeding portion

[0031] 220: First radiating part

[0032] 221: first edge of the first radiation portion

[0033] 222: second edge of the first radiation portion

[0034] 223: the third edge of the first radiation portion

[0035] 224: the fourth edge of the first radiation portion

[0036] 225: Gap area

[0037] 230: Second radiation part

[0038] 231: first end of the second radiation portion

[0039] 232: second end of the second radiation portion

[0040] 240: The third radiation

[0041] 241: first end of the third radiation portion

[0042] 242: second end of the third radiation portion

[0043] 400: Second antenna element

[0044] 410: Second feeding part

[0045] 411: first end of the second feeding portion

[0046] 412: second end of the second feeding portion

[0047] 420: The fourth radiation

[0048] 424: Terminal fork structure

[0049] 425: The first rectangular widened portion of the end bifurcated structure

[0050] 426: The second rectangular widened portion of the end bifurcated structure

[0051] 428: Single pole slot

[0052] 429: Unequal width step structure

[0053] 430: Fifth Radiation

[0054] 431: first end of the fifth radiation portion

[0055] 432: second end of the fifth radiation portion

[0056] 440: Sixth Radiation Department

[0057] 441: first end of the sixth radiation portion

[0058] 442: second end of the sixth radiation portion

[0059] D1,D2,D3,D4,D5,D6,DL: Spacing

[0060] E1: First surface

[0061] E2: Second surface

[0062] E3: Third Surface

[0063] E4: Fourth Surface

[0064] E5: The fifth surface

[0065] E6: Sixth Surface

[0066] FB1, FB5: First frequency range

[0067] FB2, FB6: Second frequency range

[0068] FB3, FB7: The third frequency range

[0069] FB4, FB8: The fourth frequency range

[0070] GC1: First coupling gap

[0071] GC2: Second coupling gap

[0072] GC3: Third coupling gap

[0073] H1,H2: Height

[0074] L1, L2, L3, L4, L5, L6, L7 length

[0075] LB1: First bending line

[0076] LB2: Second bending line

[0077] LB3: Third bending line

[0078] LB4: Fourth bending line

[0079] VSS: Ground potential

[0080] W1,W2,W3,W4: Width DETAILED DESCRIPTION

[0081] In order to make the purpose, features and advantages of the present invention more clearly understood, specific embodiments of the present invention are given below with reference to the accompanying drawings for detailed description as follows.

[0082] Certain words are used in the specification and claims to refer to specific components. It should be understood by those skilled in the art that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. The words "include" and "comprise" mentioned throughout the specification and claims are open-ended terms and should be interpreted as "include but not limited to". The word "substantially" means that within an acceptable error range, those skilled in the art can solve the technical problem and achieve the basic technical effect within a certain error range. In addition, the word "coupled" in this specification includes any direct and indirect electrical connection means. Therefore, if the text describes a first device coupled to a second device, it means that the first device can be directly electrically connected to the second device, or indirectly electrically connected to the second device via other devices or connection means.

[0083] The following disclosure provides many different embodiments or examples to implement the different features of the present invention. The following disclosure describes specific examples of various components and their arrangements to simplify the description. Of course, these specific examples are not intended to be limiting. For example, if the present disclosure describes a first feature formed on or above a second feature, it means that it may include an embodiment in which the first feature and the second feature are in direct contact, and may also include an embodiment in which an additional feature is formed between the first feature and the second feature, so that the first feature and the second feature may not be in direct contact. In addition, different examples in the following disclosure may reuse the same reference symbols or (and) marks. These repetitions are for the purpose of simplification and clarity, and are not intended to limit the specific relationship between the different embodiments or (and) structures discussed.

[0084] Figure 1 1 is a three-dimensional diagram showing an antenna system 100 according to an embodiment of the present invention. The antenna system 100 can be applied to a communication device or an automotive electronic device, but is not limited thereto. Figure 1As shown, the antenna system 100 includes: a ground plane 110, a first nonconductive support element 120, a second nonconductive support element 130, a first antenna element 200, and a second antenna element 400. The ground plane 110, the first antenna element 200, and the second antenna element 400 can be made of metal materials, such as copper, silver, aluminum, iron, or alloys thereof. The first nonconductive support element 120 and the second nonconductive support element 130 can be made of plastic materials.

[0085] The shapes and types of the first antenna element 200 and the second antenna element 400 are not particularly limited in the present invention. For example, any one of the first antenna element 200 and the second antenna element 400 may be a monopole antenna, a dipole antenna, a patch antenna, a coupled-fed antenna, a planar inverted F antenna (PIFA), a chip antenna, or a hybrid antenna. In a preferred embodiment, the first antenna element 200 and the second antenna element 400 may both cover a wideband operating band of LTE (Long Term Evolution) or 5G (5th Generation Wireless Systems).

[0086] The ground plane 110 may be substantially a rectangular plane for providing a ground voltage VSS. The first non-conductor support element 120 is adjacent to the ground plane 110. The first non-conductor support element 120 has a first surface E1, a second surface E2, and a third surface E3, wherein the first surface E1 may be substantially parallel to the third surface E3, and the second surface E2 may be substantially perpendicular to the first surface E1 and the third surface E3. The first antenna element 200 is distributed on the first surface E1, the second surface E2, and the third surface E3 of the first non-conductor support element 120, wherein the first antenna element 200 may be excited by a first signal source 191. The second non-conductor support element 130 is adjacent to the ground plane 110. The second non-conductor support element 130 has a fourth surface E4, a fifth surface E5, and a sixth surface E6, wherein the fourth surface E4 may be substantially parallel to the sixth surface E6, and the fifth surface E5 may be substantially perpendicular to the fourth surface E4 and the sixth surface E6. The second antenna element 400 is distributed on the fourth surface E4, the fifth surface E5, and the sixth surface E6 of the second non-conductive support element 130, wherein the second antenna element 400 can be excited by a second signal source 192. The first signal source 191 and the second signal source 192 can each be a radio frequency (RF) module. It must be noted that the term "adjacent" or "adjacent" in this specification may refer to the corresponding two elements being less than a predetermined distance (for example: 5mm or shorter), but usually does not include the situation where the corresponding two elements are in direct contact with each other (that is, the aforementioned distance is shortened to 0). According to actual measurement results, since the first antenna element 200 and the second antenna element 400 are configured substantially perpendicular to each other, the antenna system 100 can have multiple polarization directions and good antenna isolation.

[0087] The following embodiments will introduce the detailed structural features of the first antenna element 200 and the second antenna element 400. It must be understood that these drawings and descriptions are only for example and are not intended to limit the scope of protection of the present invention.

[0088] Figure 2 is a plan view of the first antenna element 200 according to an embodiment of the present invention. Figure 1 , Figure 2 The first antenna element 200 can be bent 90 degrees along a first bending line LB1 and a second bending line LB2, respectively, wherein the first bending line LB1 can be between the first surface E1 and the second surface E2 of the first non-conductive support element 120, and the second bending line LB2 can be between the second surface E2 and the third surface E3 of the first non-conductive support element 120. Figure 2 In the embodiment of the present invention, the first antenna element 200 includes a first feeding element 210 , a first radiating element 220 , a second radiating element 230 , and a third radiating element 240 .

[0089] The first feeding portion 210 is between the second radiating portion 230 and the third radiating portion 240, and is completely separated from the second radiating portion 230 and the third radiating portion 240. The first feeding portion 210 has a first end 211 and a second end 212, wherein the first end 211 of the first feeding portion 210 is coupled to the first signal source 191. The first radiating portion 220 may be substantially rectangular. The first radiating portion 220 has a first edge 221, a second edge 222, a third edge 223, and a fourth edge 224, wherein the first edge 221 and the second edge 222 are relatively parallel to each other and can be regarded as the long sides of the first radiating portion 220, and the third edge 223 and the fourth edge 224 are relatively parallel to each other and can be regarded as the short sides of the first radiating portion 220. The first edge 221 of the first radiating portion 220 is also coupled to the second end 212 of the first feeding portion 210. In addition, a notch region 225 may be formed at the second edge 222 of the first radiating portion 220, and the notch region 225 may be substantially in the shape of a square. In some embodiments, the first radiating portion 220 extends from the second surface E2 of the first non-conductive support element 120 to the third surface E3, wherein the notch region 225 is almost completely located on the third surface E3 of the first non-conductive support element 120.

[0090] The second radiating portion 230 may be substantially in the shape of a relatively long straight strip. The second radiating portion 230 has a first end 231 and a second end 232, wherein the first end 231 of the second radiating portion 230 is coupled to the ground potential VSS, and the second end 232 of the second radiating portion 230 is an open end and is adjacent to the first radiating portion 220. A first coupling gap GC1 may be formed between the first edge 221 of the first radiating portion 220 and the second end 232 of the second radiating portion 230. The third radiating portion 240 may be substantially in the shape of a relatively short straight strip. The third radiating portion 240 has a first end 241 and a second end 242, wherein the first end 241 of the third radiating portion 240 is coupled to the ground potential VSS, and the second end 242 of the third radiating portion 240 is an open end and is adjacent to the first radiating portion 220. A second coupling gap GC2 may be formed between the first edge 221 of the first radiating portion 220 and the second end 242 of the third radiating portion 240. In some embodiments, the first feeding portion 210, the second radiating portion 230, and the third radiating portion 240 are almost completely located on the first surface E1 of the first non-conductive support element 120. In other embodiments, the first end 231 of the second radiating portion 230 may also be coupled to the ground potential VSS via a first matching circuit, and the first end 241 of the third radiating portion 240 may also be coupled to the ground potential VSS via a second matching circuit (not shown). For example, any of the aforementioned first matching circuit and the second matching circuit may include a capacitor and an inductor coupled in parallel to each other, but is not limited thereto.

[0091] Figure 3 2 is a graph showing the return loss of the first antenna element 200 according to an embodiment of the present invention, wherein the horizontal axis represents the operating frequency (MHz) and the vertical axis represents the return loss (dB). Figure 3 According to the measurement results, the first antenna element 200 may cover a first frequency interval FB1, a second frequency interval FB2, a third frequency interval FB3, and a fourth frequency interval FB4. For example, the first frequency interval FB1 may be between 700MHz and 960MHz, the second frequency interval FB2 may be between 1710MHz and 2170MHz, the third frequency interval FB3 may be between 2300MHz and 2690MHz, and the fourth frequency interval FB4 may be between 3300MHz and 5000MHz. Therefore, the first antenna element 200 will at least support broadband operations of LTE and 5G.

[0092] In terms of antenna principle, the first feed portion 210 and the first radiating portion 220 can be jointly excited to generate the aforementioned first frequency interval FB1 and the second frequency interval FB2. The second radiating portion 230 can be coupled and excited by the first feed portion 210 and the first radiating portion 220 to generate the aforementioned third frequency interval FB3. The third radiating portion 240 can be coupled and excited by the first feed portion 210 and the first radiating portion 220 to generate the aforementioned fourth frequency interval FB4.

[0093] In some embodiments, the element dimensions of the first antenna element 200 may be as follows. The length L1 of the first radiating portion 220 may be less than or equal to 0.5 times the wavelength (λ / 2) of the first frequency interval FB1. The width W1 of the first radiating portion 220 may be between 20 mm and 30 mm. The length L2 of the notch area 225 may be between 8 mm and 12 mm. The width W2 of the notch area 225 may be between 8 mm and 12 mm. The length L3 of the second radiating portion 230 may be between 0.25 times and 0.5 times the wavelength (λ / 4 to λ / 2) of the third frequency interval FB3. The length L4 of the third radiating portion 240 may be between 0.25 times and 0.5 times the wavelength (λ / 4 to λ / 2) of the fourth frequency interval FB4. The spacing from the notch area 225 to the third edge 223 of the first radiating portion 220 may be defined as a first spacing D1, and the spacing from the notch area 225 to the fourth edge 224 of the first radiating portion 220 may be defined as a second spacing D2, wherein the ratio (D2 / D1) of the second spacing D2 to the first spacing D1 may be between 1 / 5 and 1 / 2, for example, about 1 / 3. The spacing D3 from the second radiating portion 230 to the first feeding portion 210 may be between 1 mm and 2 mm. The spacing D4 from the third radiating portion 240 to the first feeding portion 210 may be between 2 mm and 3 mm. The width of the first coupling gap GC1 may be between 1 mm and 3 mm. The width of the second coupling gap GC2 may be between 2 mm and 4 mm. The height H1 of the first non-conductive support element 120 may be between 7 mm and 11 mm. The above size range is obtained based on multiple experimental results, which helps to optimize the operation bandwidth and impedance matching of the first antenna element 200 .

[0094] Figure 4 is a plan view showing a second antenna element 400 according to an embodiment of the present invention. Figure 1 , Figure 4The second antenna element 400 may be bent 90 degrees along a third bending line LB3 and a fourth bending line LB4, respectively, wherein the third bending line LB3 may be between the fourth surface E4 and the fifth surface E5 of the second non-conductive support element 130, and the fourth bending line LB4 may be between the fifth surface E5 and the sixth surface E6 of the second non-conductive support element 130. Figure 4 In the embodiment of the present invention, the second antenna element 400 includes a second feeding portion 410 , a fourth radiating portion 420 , a fifth radiating portion 430 , and a sixth radiating portion 440 .

[0095] The second feeding portion 410 is between the fifth radiating portion 430 and the sixth radiating portion 440, and is completely separated from the fifth radiating portion 430 and the sixth radiating portion 440. The second feeding portion 410 has a first end 411 and a second end 412, wherein the first end 411 of the second feeding portion 410 is coupled to the second signal source 192. The fourth radiating portion 420 may present a meandering shape, such as an inverted U shape. One end of the fourth radiating portion 420 is coupled to the second end 412 of the second feeding portion 410, and the fourth radiating portion 420 further includes a terminal fork structure 424 (located at the other end thereof). In detail, the terminal fork structure 424 includes a first rectangular widening portion 425 (larger in area) and a second rectangular widening portion 426 (smaller in area), wherein a monopole slot 428 is formed between the first rectangular widening portion 425 and the second rectangular widening portion 426. In addition, the fourth radiating portion 420 may further include a stepped structure 429 of unequal width (located in the middle thereof) for fine-tuning the low-frequency impedance matching of the second antenna element 400. In some embodiments, the second feeding portion 410 extends from the fourth surface E4 of the second non-conductive support element 130 to the fifth surface E5, and the fourth radiating portion 420 extends from the fifth surface E5 of the second non-conductive support element 130 to the sixth surface E6.

[0096] The fifth radiating portion 430 may be substantially in an N-shape. The fifth radiating portion 430 has a first end 431 and a second end 432, wherein the first end 431 of the fifth radiating portion 430 is coupled to the ground potential VSS, and the second end 432 of the fifth radiating portion 430 is an open end and is adjacent to the first rectangular widened portion 425 of the fourth radiating portion 420. A third coupling gap GC3 may be formed between the first rectangular widened portion 425 of the fourth radiating portion 420 and the second end 432 of the fifth radiating portion 430. The sixth radiating portion 440 may be substantially in an inverted J-shape. The sixth radiating portion 440 has a first end 441 and a second end 442, wherein the first end 441 of the sixth radiating portion 440 is coupled to the ground potential VSS, and the second end 442 of the sixth radiating portion 440 is an open end and extends in a direction away from the fourth radiating portion 420. In some embodiments, the fifth radiation portion 430 and the sixth radiation portion 440 both extend from the fourth surface E4 of the second non-conductive support element 130 to the fifth surface E5 .

[0097] Figure 5 The return loss diagram of the second antenna element 400 according to an embodiment of the present invention is shown, wherein the horizontal axis represents the operating frequency (MHz) and the vertical axis represents the return loss (dB). Figure 5 According to the measurement results, the second antenna element 400 may cover a first frequency interval FB5, a second frequency interval FB6, a third frequency interval FB7, and a fourth frequency interval FB8. For example, the first frequency interval FB5 may be between 700MHz and 960MHz, the second frequency interval FB6 may be between 1710MHz and 2170MHz, the third frequency interval FB7 may be between 2300MHz and 2690MHz, and the fourth frequency interval FB8 may be between 3300MHz and 5000MHz. Therefore, the second antenna element 400 will at least support broadband operations of LTE and 5G.

[0098] In terms of antenna principle, the second feed portion 410 and the fourth radiating portion 420 can be jointly excited to generate the aforementioned first frequency interval FB5 and the second frequency interval FB6. The fifth radiating portion 430 can be coupled and excited by the second feed portion 410 and the fourth radiating portion 420 to generate the aforementioned third frequency interval FB7. The sixth radiating portion 440 can be coupled and excited by the second feed portion 410 and the fourth radiating portion 420 to generate the aforementioned fourth frequency interval FB8.

[0099] In some embodiments, the element dimensions of the second antenna element 400 may be as follows. The total length L5 of the second feeding portion 410 and the fourth radiating portion 420 may be less than or equal to 0.5 times the wavelength (λ / 2) of the first frequency interval FB5. The length L6 of the fifth radiating portion 430 may be between 0.25 times and 0.5 times the wavelength (λ / 4-λ / 2) of the third frequency interval FB7. The length L7 of the sixth radiating portion 440 may be between 0.25 times and 0.5 times the wavelength (λ / 4-λ / 2) of the fourth frequency interval FB8. In the end fork structure 424, the width of the first rectangular widened portion 425 may be defined as a first width W3, and the width of the second rectangular widened portion 426 may be defined as a second width W4, wherein the ratio of the second width W4 to the first width W3 (W4 / W3) may be between 1 / 5 and 1 / 2, for example, about 1 / 3. The distance D5 between the fifth radiating portion 430 and the second feeding portion 410 may be between 1 mm and 2 mm. The distance D6 between the sixth radiating portion 440 and the second feeding portion 410 may be between 1 mm and 2 mm. The width of the third coupling gap GC3 may be between 1 mm and 4 mm. The height H2 of the second non-conductor support element 130 may be between 7 mm and 11 mm. In addition, the distance DL between the first non-conductor support element 120 and the second non-conductor support element 130 may be between 30 mm and 40 mm. The above size ranges are obtained based on multiple experimental results, which help to optimize the operating bandwidth and impedance matching of the second antenna element 400.

[0100] Figure 6 is a diagram showing the isolation between the first antenna element 200 and the second antenna element 400 according to an embodiment of the present invention, wherein the horizontal axis represents the operating frequency (MHz) and the vertical axis represents the isolation between the first antenna element 200 and the second antenna element 400 (dB). Figure 6 According to the measurement results, in the aforementioned wideband operating band, the isolation between the first antenna element 200 and the second antenna element 400 is greater than 10 dB, and the corresponding envelope correlation coefficient (ECC) is less than 0.2, which can meet the actual application requirements of general multi-antenna systems.

[0101] The present invention provides a novel antenna system. Compared with the conventional design, the present invention has at least the advantages of small size, wide bandwidth, multi-polarization, high isolation, and low packet correlation coefficient, so it is very suitable for application in various communication devices or automotive electronic devices.

[0102] It is worth noting that the above-mentioned component size, component shape, and frequency range are not limiting conditions of the present invention. Antenna designers can adjust these settings according to different needs. The antenna system of the present invention is not limited to Figure 1 to Figure 6 The present invention may only include Figure 1 to Figure 6 In other words, not all the features shown in the figures need to be implemented in the antenna system of the present invention at the same time.

[0103] In the present specification and claims, ordinal numbers, such as "first", "second", "third", etc., have no sequential relationship with each other, and are only used to distinguish two different components with the same name.

[0104] Although the present invention is disclosed in the above preferred embodiments, it is not intended to limit the scope of the present invention. Anyone familiar with this technology may make slight changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the attached claims.

Claims

1. An antenna system, characterized in that: include: Ground plane; a first non-conductive support element adjacent to the ground plane; A first antenna element is distributed on the first non-conductor support element, wherein the first antenna element is excited by a first signal source; a second non-conductive support element adjacent to the ground plane; as well as a second antenna element distributed on the second non-conductor support element, wherein the second antenna element is excited by a second signal source; The first antenna element and the second antenna element both cover the broadband operating band of LTE / 5G, The first antenna element comprises: A first feeding portion, coupled to the first signal source; A first radiating portion, coupled to the first feeding portion, wherein the first radiating portion has a notch area, and the notch area is arranged at an edge of the first radiating portion relative to the first feeding portion; A second radiating portion coupled to the ground plane and adjacent to the first radiating portion; and A third radiation portion, coupled to the ground plane and adjacent to the first radiation portion; The first feeding portion is between the second radiating portion and the third radiating portion.

2. The antenna system as claimed in claim 1, wherein the broadband operating band includes a first frequency range, a second frequency range, a third frequency range, and a fourth frequency range, the first frequency range is between 700 MHz and 960 MHz, the second frequency range is between 1710 MHz and 2170 MHz, the third frequency range is between 2300 MHz and 2690 MHz, and the fourth frequency range is between 3300 MHz and 5000 MHz. 3 . The antenna system as claimed in claim 1 , wherein the first radiating portion is rectangular and the notch area is square. 4 . The antenna system as claimed in claim 1 , wherein the second radiating portion is in a long straight strip shape, and the third radiating portion is in a short straight strip shape.

5. The antenna system as claimed in claim 2, wherein the length of the first radiating portion is less than or equal to 0.5 times the wavelength of the first frequency range, the length of the second radiating portion is between 0.25 times and 0.5 times the wavelength of the third frequency range, and the length of the third radiating portion is between 0.25 times and 0.5 times the wavelength of the fourth frequency range.

6. An antenna system, characterized in that: include: Ground plane; a first non-conductive support element adjacent to the ground plane; A first antenna element is distributed on the first non-conductor support element, wherein the first antenna element is excited by a first signal source; a second non-conductive support element adjacent to the ground plane; as well as a second antenna element distributed on the second non-conductor support element, wherein the second antenna element is excited by a second signal source; The first antenna element and the second antenna element both cover the broadband operating band of LTE / 5G, The second antenna element comprises: A second feeding portion coupled to the second signal source; A fourth radiating portion, coupled to the second feeding portion, wherein the fourth radiating portion comprises a terminal bifurcated structure; a fifth radiating portion, coupled to the ground plane and adjacent to the fourth radiating portion; and a sixth radiating portion coupled to the ground plane; The second feeding portion is between the fifth radiating portion and the sixth radiating portion, the end bifurcated structure of the fourth radiating portion includes a first rectangular widened portion and a second rectangular widened portion, and the monopole slot is formed between the first rectangular widened portion and the second rectangular widened portion.

7. The antenna system as claimed in claim 6, wherein the broadband operating band includes a first frequency range, a second frequency range, a third frequency range, and a fourth frequency range, the first frequency range is between 700 MHz and 960 MHz, the second frequency range is between 1710 MHz and 2170 MHz, the third frequency range is between 2300 MHz and 2690 MHz, and the fourth frequency range is between 3300 MHz and 5000 MHz.

8. The antenna system as claimed in claim 7, wherein the total length of the second feeding portion and the fourth radiating portion is less than or equal to 0.5 times the wavelength of the first frequency range, the length of the fifth radiating portion is between 0.25 times and 0.5 times the wavelength of the third frequency range, and the length of the sixth radiating portion is between 0.25 times and 0.5 times the wavelength of the fourth frequency range.

9. An antenna system, characterized in that: include: Ground plane; a first non-conductive support element adjacent to the ground plane; A first antenna element is distributed on the first non-conductor support element, wherein the first antenna element is excited by a first signal source; a second non-conductive support element adjacent to the ground plane; as well as a second antenna element distributed on the second non-conductor support element, wherein the second antenna element is excited by a second signal source; The first antenna element and the second antenna element both cover the broadband operating band of LTE / 5G, The second antenna element comprises: A second feeding portion coupled to the second signal source; A fourth radiating portion, coupled to the second feeding portion, wherein the fourth radiating portion comprises a terminal bifurcated structure; a fifth radiating portion, coupled to the ground plane and adjacent to the fourth radiating portion; and a sixth radiating portion coupled to the ground plane; The second feeding portion is between the fifth radiating portion and the sixth radiating portion. The fifth radiating portion is in an N shape, and the sixth radiating portion is in an inverted J shape.

10. The antenna system of claim 9, wherein the broadband operating band comprises a first frequency range, a second frequency range, a third frequency range, and a fourth frequency range, the first frequency range being between 700 MHz and 960 MHz, the second frequency range being between 1710 MHz and 2170 MHz, the third frequency range being between 2300 MHz and 2690 MHz, and the fourth frequency range being between 3300 MHz and 5000 MHz.

11. The antenna system as claimed in claim 10, wherein the total length of the second feeding portion and the fourth radiating portion is less than or equal to 0.5 times the wavelength of the first frequency range, the length of the fifth radiating portion is between 0.25 times and 0.5 times the wavelength of the third frequency range, and the length of the sixth radiating portion is between 0.25 times and 0.5 times the wavelength of the fourth frequency range.

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