Antenna and communication equipment

Abstract

The embodiment of the utility model relates to the technical field of communication, and particularly discloses an antenna and a communication device, the antenna comprises a dielectric layer, a radiation layer and a grounding layer, the dielectric layer is provided with a first surface and a second surface which are opposite, the radiation layer arranged on the first surface comprises a radiation unit, a micro-strip feeder line and a resonance unit, the micro-strip feeder line is connected with the radiation unit, and the resonance unit is connected with the grounding layer. The first resonance unit and the second resonance unit are located on the two sides of the micro-strip feeder respectively, the micro-strip feeder extends in the first direction, the radiation layer is provided with a first gap and a second gap, the first gap extends in the first direction, the second gap extends in the second direction, the second gap is located in the micro-strip feeder, one end of the first gap is located in the micro-strip feeder, and the other end of the first gap is located in the micro-strip feeder. The other end of the first gap is located at the radiation unit, the first gap is arranged at two ends of the second gap, and the grounding layer is arranged on the second surface. The first gap, the second gap, the first resonance unit and the second resonance unit of the radiation layer enable the antenna to have a notch characteristic, and in-band interference is effectively suppressed.

Description

Technical Field

[0001] The embodiments of the utility model relate to the field of communication technology, and in particular to an antenna and communication equipment. Background Art

[0002] In modern wireless communication systems, antennas are key components for signal transmission and reception, and their performance directly impacts the overall performance of the communication system. With the rapid development of communication technology, ultra-wideband antennas (UWB antennas) have become a research hotspot in the wireless communication field due to their advantages, such as extremely wide frequency range, high transmission rates, excellent directivity, and strong anti-interference capabilities. In multi-band communication systems, UWB and narrowband systems can interfere with each other, severely impacting their respective system performance. Therefore, filtering is currently commonly used to mitigate interference between UWB antennas and narrowband systems.

[0003] During the process of implementing the embodiments of the present invention, the inventors discovered that using a filter to suppress interference signals of an ultra-wideband antenna increases the complexity and cost of the system. Utility Model Content

[0004] In view of the above problems, embodiments of the present invention provide an antenna and a communication device, which overcome the above problems or at least partially solve the above problems.

[0005] To solve the above technical problems, the present invention adopts a technical solution: providing an antenna, comprising a dielectric layer, a radiating layer and a ground layer, the dielectric layer having a first surface and a second surface relative to each other, the radiating layer being arranged on the first surface, the radiating layer comprising a radiating unit and a microstrip feeder, the microstrip feeder being connected to the radiating unit, the microstrip feeder extending along a first direction, the radiating layer being provided with a first slot and a second slot, the first slot extending along the first direction, the second slot extending along the second direction, the second slot being located at the microstrip feeder, one end of the first slot being located at the microstrip feeder, the other end of the first slot being located at the radiating unit, the first slot being arranged at both ends of the second slot, one end of the second slot being connected to one end of one of the first slots, the other end of the second slot being connected to one end of another of the first slots, the ground layer being arranged on the second surface, wherein the first direction is perpendicular to the second direction, and the first direction and the second direction are both parallel to the first surface.

[0006] Optionally, a distance from one end to the other end of the first gap is greater than a distance from one end to the other end of the second gap.

[0007] Optionally, the radiation unit includes a first rectangular patch, a first arc-shaped patch and a second arc-shaped patch, the first rectangular patch is connected to the microstrip feeder, the first arc-shaped patch and the second arc-shaped patch are respectively arranged on both sides of the first rectangular patch along the second direction, and the first arc-shaped patch and the second arc-shaped patch are symmetrically arranged about the first rectangular patch.

[0008] Optionally, the radiation layer also includes a first resonance unit, which is arranged on one side of the microstrip feeder along the second direction. The first resonance unit includes a first resonance part and a second resonance part. The first resonance part extends along the first direction, the second resonance part is arranged at both ends of the first resonance part, one end of the second resonance part is arranged at the end of the first resonance part, and the other end of the second resonance part extends away from the first resonance part along the second direction.

[0009] Optionally, a distance from one end to the other end of the first resonant part is greater than a distance from one end to the other end of the second resonant part.

[0010] Optionally, the first resonance unit is composed of a microstrip line.

[0011] Optionally, the radiation layer further includes a second resonance unit, which is arranged on the other side of the microstrip feeder along the second direction, and the first resonance unit and the second resonance unit are symmetrically arranged with respect to the microstrip feeder.

[0012] Optionally, the second resonance unit is composed of a microstrip line.

[0013] Optionally, the ground layer includes a second rectangular patch, a first right-angled trapezoidal patch and a second right-angled trapezoidal patch, the first right-angled trapezoidal patch and the second right-angled trapezoidal patch are respectively arranged on both sides of the second rectangular patch along the second direction, and the first right-angled trapezoidal patch and the second right-angled trapezoidal patch are symmetrically arranged about the second rectangular patch.

[0014] In order to solve the above technical problem, another technical solution adopted by the present invention is: providing a communication device including the above antenna.

[0015] The beneficial effects of the embodiments of the present invention are as follows: Different from the prior art, the embodiments of the present invention provide an antenna and a communication device, the antenna comprising a dielectric layer, a radiating layer and a grounding layer, the dielectric layer having a first surface and a second surface opposite to each other, the radiating layer being arranged on the first surface, the radiating layer comprising a radiating unit, a microstrip feeder and a resonant unit, the microstrip feeder being connected to the radiating unit, the resonant unit being located on both sides of the microstrip line, the microstrip feeder extending along a first direction, the radiating layer being provided with a first slot and a second slot, the first slot extending along the first direction, the second slot extending along the second direction, the second slot being located at the microstrip feeder, one end of the first slot being located at the microstrip feeder, the other end of the first slot being located at the radiating unit, the first slot being arranged at both ends of the second slot, one end of the second slot being connected to one end of one of the first slots, the other end of the second slot being connected to one end of another of the first slots, the grounding layer being arranged on the second surface, wherein the first direction is perpendicular to the second direction, and the first direction and the second direction are both parallel to the first surface. In the above manner, the first slot, the second slot and the resonant unit of the radiation layer enable the antenna to have a notch characteristic, effectively suppressing in-band interference, eliminating the need for additional filters and reducing communication costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying any creative work.

[0017] Figure 1 is a side view of the antenna provided by an embodiment of the present utility model;

[0018] Figure 2 is a front view of the antenna provided by an embodiment of the present utility model as viewed from the first surface;

[0019] Figure 3 yes Figure 2 and Figure 2 A partially enlarged parameter diagram;

[0020] Figure 4 is a rear view of the antenna provided by an embodiment of the present utility model as viewed from the second surface;

[0021] Figure 5 yes Figure 4 Parameter diagram of

[0022] Figure 6This is a graph showing how the standing wave ratio of the antenna provided by the embodiment of the present invention changes with frequency under different L1 values;

[0023] Figure 7 This is a graph showing how the standing wave ratio of the antenna provided by the embodiment of the present invention changes with frequency under different L2 values;

[0024] Figure 8 This is a graph showing how the standing wave ratio of the antenna provided by the embodiment of the present invention changes with frequency at different W1 values;

[0025] Figure 9 This is a graph showing how the standing wave ratio of the antenna provided by the embodiment of the present invention changes with frequency at different S values;

[0026] Figure 10 This is a graph showing how the standing wave ratio of the antenna provided by the embodiment of the present invention changes with frequency at different D values;

[0027] Figure 11 The antenna provided by the embodiment of the present invention has different L SV The curve of standing wave ratio changing with frequency under numerical value;

[0028] Figure 12 The antenna provided by the embodiment of the present invention has different L SH The curve of standing wave ratio changing with frequency under numerical value;

[0029] Figure 13 The antenna provided by the embodiment of the present invention has different W S The curve of standing wave ratio changing with frequency under numerical value;

[0030] Figure 14 This is a simulation result diagram of the standing wave ratio of the preferred antenna example provided by the embodiment of the present utility model varying with frequency;

[0031] Figure 15 1 is a simulation result diagram of the maximum gain and radiation efficiency of a preferred antenna example provided by an embodiment of the present utility model as a function of frequency;

[0032] Figure 16 This is the radiation pattern of the preferred antenna example provided by the embodiment of the present utility model at 10 GHz;

[0033] Figure 17 This is the radiation pattern of the preferred antenna example provided by the embodiment of the present utility model at 21GHz;

[0034] Figure 18 This is the radiation pattern of the preferred antenna example provided in the embodiment of the present utility model at 32 GHz. DETAILED DESCRIPTION

[0035] For the purpose of facilitating the understanding of the present application, the present application will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "vertical", "horizontal", "left", "right", and similar expressions used in the present specification are for the purpose of illustration only.

[0036] Unless otherwise defined, all technical and scientific terms used in the present specification are intended to have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the present specification are only for the purpose of describing specific embodiments of the present application and are not intended to limit the present application. The term "and / or" used in the present specification includes any and all combinations of one or more related listed items.

[0037] Referring to Figure 1 , the antenna 100 includes a radiation layer 1, a dielectric layer 2, and a ground layer 3, and the radiation layer 1, the dielectric layer 2, and the ground layer 3 are sequentially arranged along the thickness direction of the dielectric layer 2.

[0038] The dielectric layer 2 has opposite first and second surfaces 21 and 22, the radiation layer 1 is arranged on the first surface 21, and the ground layer 3 is arranged on the second surface 22.

[0039] In some embodiments, the dielectric layer 2 is cuboid-shaped, and the first and second surfaces 21 and 22 are parallel to each other.

[0040] For the above-mentioned radiation layer 1, refer to Figure 2The radiation layer 1 includes a radiation unit 11, a microstrip feed line 12, a first resonant unit 13 and a second resonant unit 14. The microstrip feed line 12 extends along a first direction x. One end of the microstrip feed line 12 is connected to the radiation unit 11. The first resonant unit 13 and the second resonant unit 14 are respectively arranged on two sides of the microstrip feed line 12 along a second direction y. The first resonant unit 13 and the second resonant unit 14 are symmetrically arranged about the microstrip feed line 12. The radiation layer 1 is provided with a first slot 15 and a second slot 16. The first slot 15 extends along the first direction x. The second slot 16 extends along the second direction y. The second slot 16 is located at the microstrip feed line 12. One end of the first slot 15 is located at the microstrip feed line 12. The other end of the first slot 15 is located at the radiation unit 11. The first slot 15 is arranged at two ends of the second slot 16. One end of the second slot 16 is in communication with one end of the first slot 15. The other end of the second slot 16 is in communication with one end of the other first slot 15. That is, two first slots 15 and one second slot 16 form a "C" type slot of the radiation layer 1, so that the antenna 100 has a first notch, effectively suppressing in-band interference.

[0041] In some embodiments, the distance from one end to the other end of the first slot 15 is greater than the distance from one end to the other end of the second slot 16.

[0042] It should be noted that the first direction x and the second direction y are perpendicular to each other, and the first direction x and the second direction y are both parallel to the first surface 21. The first direction x is parallel to the length direction of the dielectric layer 2, and the second direction y is parallel to the width direction of the dielectric layer 2.

[0043] Further, the radiation unit 11 includes a first rectangular patch 111, a first arc-shaped patch 112 and a second arc-shaped patch 113. The first arc-shaped patch 112, the first rectangular patch 111 and the second arc-shaped patch 113 are sequentially connected along the second direction y. Adjacent right-angle edges of the first rectangular patch 111 are respectively parallel to the first direction x and the second direction y. The first arc-shaped patch 112 and the second arc-shaped patch 113 are respectively located on two sides of the first rectangular patch 111 along the second direction y. The first arc-shaped patch 112 and the second arc-shaped patch 113 are symmetrically arranged about the first rectangular patch 111. The periphery of the first arc-shaped patch 112 and the periphery of the second arc-shaped patch 113 are both composed of straight edges and arc edges. The straight edge of the first arc-shaped patch 112 and the straight edge of the second arc-shaped patch 113 are respectively connected to two straight edges of the first rectangular patch 111 which are parallel to the first direction x. One straight edge of the first rectangular patch 111 which is parallel to the second direction y is connected to one end of the microstrip feed line 12.

[0044] In some embodiments, the first arc-shaped patch 112 and the second arc-shaped patch 113 are both arranged in a semi-elliptical shape.

[0045] In some embodiments, the symmetry axis of the radiation unit 11 parallel to the first direction x coincides with the symmetry axis of the microstrip feed line 12 parallel to the first direction x.

[0046] The first resonant unit 13 includes a first resonant portion 131 and a second resonant portion 132. The first resonant portion 131 extends along a first direction x, and the second resonant portion 132 extends along a second direction y. The second resonant portion 132 is disposed at both ends of the first resonant portion 131. One end of the second resonant portion 132 is disposed at the end of the first resonant portion 131, and the other end of the second resonant portion 132 extends away from the first resonant portion 131 along the second direction y. The second resonant unit 14 includes a third resonant portion 141 and a fourth resonant portion 142. The third resonant portion 141 extends along the first direction x, and the fourth resonant portion 142 extends along the second direction y. The fourth resonant portion 142 is disposed at both ends of the third resonant portion 141. One end of the fourth resonant portion 142 is disposed at the end of the third resonant portion 141, and the other end of the fourth resonant portion 142 extends away from the third resonant portion 141 along the fourth direction. That is, the first resonant unit 13 and the second resonant unit 14 are both arranged to be a "C"-shaped structure, and the opening of the "C"-shaped structure is arranged away from the microstrip feed line 12. The two resonant units arranged in the "C"-shaped structure enable the antenna 100 to have a second notch, further suppressing in-band interference.

[0047] In some embodiments, the distance from one end of the first resonator 131 to the other end is greater than the distance from one end of the second resonator 132. The distance from one end of the third resonator 141 to the other end is greater than the distance from one end of the fourth resonator 142.

[0048] In some embodiments, the first resonance unit 13 and the second resonance unit 14 are both formed by microstrip lines.

[0049] For the above ground plane 3, see Figure 4 The ground layer 3 includes a second rectangular patch 31, a first right-angled trapezoidal patch 32, and a second right-angled trapezoidal patch 33. The first right-angled trapezoidal patch 32 and the second right-angled trapezoidal patch 33 are arranged on both sides of the second rectangular patch 31 along the second direction y. The first right-angled trapezoidal patch 32 and the second right-angled trapezoidal patch 33 are symmetrically arranged with respect to the second rectangular patch 31. The adjacent right-angled sides of the second rectangular patch 31 are parallel to the first direction x and the second direction y, respectively. The short base of the first right-angled trapezoidal patch 32 and the short base of the second right-angled trapezoidal patch 33 are respectively connected to the two straight sides of the second rectangular patch 31 that are parallel to the first direction x. One straight side of the second rectangular patch 31 that is parallel to the second direction y is arranged at the edge of the second surface 22. In addition, along the thickness direction of the dielectric layer 2, the projection of the radiating element 11 does not overlap with the ground layer 3.

[0050] In some embodiments, the length of the ground layer 3 along the second direction y is equal to the length of the dielectric layer 2 along the second direction y.

[0051] In some embodiments, the radiation layer 1 and the ground layer 3 are made of metal.

[0052] For ease of understanding, this application also provides a design example of antenna 100, wherein the dielectric constant of dielectric layer 2 is 3.38, the dielectric loss is 0.0022, and the thickness is 0.4 mm. The thickness of radiation layer 1 and ground layer 3 are both 0.035 mm, and both are copper-plated layers. Figure 3 and Figure 5 , L A 、W A are the length and width of dielectric layer 2, L GM is the width of the second rectangular patch 31 and the length of the short base of the first right-angled trapezoidal patch 32, W GM is the length of the second rectangular patch 31, L GRL is the length of the long base of the first right-angled trapezoidal patch 33, L P is the length of the first rectangular patch 111 and the major axis length of the semi-elliptical first arc patch 112, W P is the width of the first rectangular patch 111, L T is half the length of the minor axis of the semi-elliptical first arc patch 112, L1 is the length of the first resonant portion 131 and the length of the second resonant portion 132, L2 is the length of the second resonant portion 132 and the length of the fourth resonant portion 142, W1 is the width of the first resonant portion 131, the width of the second resonant portion 132, the width of the third resonant portion 141 and the width of the fourth resonant portion 142, S is the distance between the first resonant portion 131 and the microstrip feed line 12 and the distance between the third resonant portion 141 and the microstrip feed line 12, L SV is the length of the first gap 15, LS H is the length of the second slot 16, D is the distance between the second slot 16 and the bottom edge of the dielectric layer 2 close to the microstrip feed line 12, L F is the length of the microstrip feed line 12, W F is the width of the microstrip feed line 12.

[0053] The "C"-shaped slot formed by the first slot 15 and the second slot 16 enables the antenna 100 to have a first transmission zero point. The frequency corresponding to the first transmission zero point is the center frequency f of the first notch. NL , the relationship is,

[0054]

[0055] Among them, ε r is the dielectric constant of the medium, and c is the speed of light in a vacuum.

[0056] The first resonant unit 13 and the second resonant unit 14 in a “C”-shaped structure enable the antenna 100 to have a second transmission zero point. The frequency corresponding to the second transmission zero point is the center frequency f of the second notch. NH , the relationship is,

[0057]

[0058] Next, see Figures 6 to 13 , Figures 6 to 13 The standing wave ratio of antenna 100 is respectively related to the parameters L1, L2, W1, S, D, L SV , L SH and W S relationship diagram.

[0059] See also Figure 6 , Figure 6 The following graph shows the relationship between the standing wave ratio (SWR) of antenna 100 and frequency when parameter L1 is 0.3mm, 0.5mm, and 0.7mm, respectively. As shown in the graph, as the value of L1 gradually increases, the SWR of antenna 100 remains unchanged within the passband below the center frequency of the first notch. Within the frequency range above the center frequency of the first notch and below the center frequency of the second notch, the SWR first remains unchanged and then increases. Within the passband above the center frequency of the second notch, the SWR first decreases, then remains unchanged, and then decreases. Furthermore, as the value of L1 gradually increases, the passband width increases, the center frequency of the first notch remains unchanged, the SWR at the center frequency of the first notch first decreases slightly and then increases slightly, the center frequency of the second notch decreases, and the SWR at the center frequency of the second notch increases.

[0060] See also Figure 7 , Figure 7 3 is a relationship diagram of the standing wave ratio of antenna 100 versus frequency when the parameter L2 is 2.8 mm, 3.2 mm, and 3.6 mm, respectively. It can be seen from the figure that as the value of L2 gradually increases, the standing wave ratio remains unchanged within the passband less than the center frequency of the first notch; within the frequency range greater than the center frequency of the first notch and less than the center frequency of the second notch, the standing wave ratio first remains unchanged and then increases; within the passband greater than the center frequency of the second notch, the standing wave ratio first decreases, then increases, and then decreases. Moreover, as the value of L2 gradually increases, the passband bandwidth remains basically unchanged, the center frequency of the first notch remains unchanged, the standing wave ratio at the center frequency of the first notch first increases and then decreases, the center frequency of the second notch decreases, and the standing wave ratio at the center frequency of the second notch first decreases and then increases.

[0061] See also Figure 8 , Figure 8The following graph shows the relationship between the standing wave ratio (SWR) of antenna 100 and frequency when parameter W1 is 0.10 mm, 0.15 mm, and 0.20 m, respectively. As shown in the graph, as W1 increases, the SWR remains constant within the passband below the center frequency of the first notch. Within the frequency range above the center frequency of the first notch and below the center frequency of the second notch, the SWR first decreases, then remains constant, and then increases. Within the passband above the center frequency of the second notch, the SWR first decreases, then remains constant. Furthermore, as W1 increases, the passband width remains constant, the center frequency of the first notch remains constant, the SWR at the center frequency of the first notch first increases, then decreases, the center frequency of the second notch decreases, and the SWR at the center frequency of the second notch increases.

[0062] See also Figure 9 , Figure 9 The following graph shows the relationship between the standing wave ratio (SWR) of antenna 100 and frequency when the parameter S is 0.13 mm, 0.18 mm, and 0.23 m, respectively. As shown in the graph, as the value of S gradually increases, the SWR remains unchanged within the passband below the center frequency of the first notch. Within the frequency range above the center frequency of the first notch and below the center frequency of the second notch, the SWR first remains unchanged and then increases. Within the passband above the center frequency of the second notch, the SWR first decreases and then remains unchanged. Furthermore, as the value of S gradually increases, the passband width remains unchanged, the center frequency of the first notch remains unchanged, the SWR increases at the center frequency of the first notch, and decreases at the center frequency of the second notch.

[0063] See also Figure 10 , Figure 10 The following graph shows the relationship between the standing wave ratio (SWR) of antenna 100 and frequency when parameter D is 1.5 mm, 2.5 mm, and 3.5 m, respectively. As shown in the graph, as the value of D increases, the SWR decreases within the passband below the center frequency of the first notch; within the frequency range above the center frequency of the first notch and below the center frequency of the second notch, the SWR decreases; and within the passband above the center frequency of the second notch, the SWR first increases and then decreases. Furthermore, as the value of D increases, the passband width remains essentially unchanged. The SWR at the center frequency of the first notch increases while the center frequency of the second notch remains unchanged, while the SWR at the center frequency of the second notch first increases and then decreases.

[0064] See also Figure 11 , Figure 11 is the parameter L SV The relationship between the standing wave ratio of the antenna 100 and the frequency is shown in the figure when the length of L is 3.8mm, 4.2mm and 4.6m respectively. SVThe value of gradually increases. In the passband less than the center frequency of the first notch, the standing wave ratio becomes larger; in the frequency range greater than the center frequency of the first notch and less than the center frequency of the second notch, the standing wave ratio becomes smaller; in the passband greater than the center frequency of the second notch, the standing wave ratio remains unchanged. SV The value of gradually increases, the passband bandwidth remains unchanged, the center frequency of the first notch becomes smaller, the standing wave ratio at the center frequency of the first notch becomes smaller, the center frequency of the second notch remains unchanged, and the standing wave ratio at the center frequency of the second notch becomes smaller.

[0065] See also Figure 12 , Figure 12 is the parameter L SH The relationship between the standing wave ratio of the antenna 100 and the frequency is shown in the figure when the length of L is 0.14mm, 0.24mm and 0.34m respectively. SH The value of gradually increases. In the passband less than the center frequency of the first notch, the standing wave ratio becomes larger; in the frequency range greater than the center frequency of the first notch and less than the center frequency of the second notch, the standing wave ratio becomes larger; in the passband greater than the center frequency of the second notch, the standing wave ratio first increases and then decreases. SH As the value of gradually increases, the passband bandwidth becomes larger, the center frequency of the first notch becomes smaller, the standing wave ratio at the center frequency of the first notch becomes larger, the center frequency of the second notch remains unchanged, and the standing wave ratio at the center frequency of the second notch becomes slightly larger.

[0066] See also Figure 13 , Figure 13 is the parameter W S The relationship between the standing wave ratio of the antenna 100 and the frequency is shown in the figure when the standing wave ratio is 0.05mm, 0.10mm and 0.15m respectively. It can be seen from the figure that as W S The value of gradually increases, the bandwidth of the passband remains unchanged, and the standing wave ratio in the passband remains almost unchanged; the center frequency of the first notch becomes smaller, and the standing wave ratio at the center frequency of the first notch becomes larger; the center frequency of the second notch remains unchanged, and the standing wave ratio at the center frequency of the second notch remains unchanged.

[0067] Therefore, in a preferred embodiment of the antenna 100, a set of optimized parameters is: A =12mm,W A =11.0mm,L GM =4.75mm,W GM =8.0mm,L GRL =6.0mm,L P =6.5mm,W P =4.5mm,L T =1.3mm, L1=3.6mm, L2=0.5mm, W1=0.1mm, S=0.13mm, L SV =4.2mm,L SH=0.24mm,W S =0.1mm,D=2.5mm,L F =5.0mm,W F =0.84mm.

[0068] See also Figure 14 , Figure 14 The simulation results of the preferred example of antenna 100, showing the variation of standing wave ratio with frequency, show that the bandwidth with standing wave ratio less than 2 ranges from 9.0 to 33.4 GHz, with a center frequency of 21.2 GHz, an absolute bandwidth of 24.4 GHz, and a relative bandwidth of 115.1%, exhibiting ultra-wideband characteristics. There are five transmission poles within the passband, corresponding to frequencies of 10.5 GHz, 14.4 GHz, 20.4 GHz, 25.3 GHz, and 31.2 GHz, ensuring maximum gain and flatness of radiation efficiency within the passband. There are two transmission zeros at the notch, corresponding to frequencies of 12.6 GHz and 22.4 GHz, which effectively suppress in-band interference at the frequencies corresponding to the transmission zeros.

[0069] See also Figure 15 , Figure 15 The following graph shows the simulation results of the maximum gain and radiation efficiency of a preferred example of antenna 100. Within the passband, the average maximum gain is 4.41 dBi, demonstrating high maximum gain. Within the passband, the average radiation efficiency is 95.1%, demonstrating high radiation efficiency. At the first notch center frequency, the maximum gain is -9.31 dB, with a radiation efficiency of 32%. At the second notch center frequency, the maximum gain is -2.73 dB, with a radiation efficiency of 35.1%. The average maximum gain and average radiation efficiency demonstrate that antenna 100 exhibits high isolation at both the first and second notch center frequencies.

[0070] See also Figures 16 to 18 , Figures 16 to 18 1 and 2 are radiation patterns of the preferred example of the antenna 100 at 10 GHz, 21 GHz and 32 GHz, respectively. As can be seen from the figures, the antenna 100 is an omnidirectional antenna 100.

[0071] In the embodiment of the present invention, the antenna 100 includes a radiation layer 1 , a dielectric layer 2 and a ground layer 3 . The dielectric layer 2 has a first surface 21 and a second surface 22. The radiation layer 1 is arranged on the first surface 21, and the ground layer 3 is arranged on the second surface 22. The radiation layer 1 includes a radiation unit 11, a microstrip feed line 12, a first resonant unit 13, and a second resonant unit 14. The microstrip feed line 12 is connected to the radiation unit 11. The first resonant unit 13 and the second resonant unit 14 are respectively located on both sides of the microstrip feed line 12. The microstrip feed line 12 extends along the first direction x. The radiation layer 1 is provided with a first slot 15 and a second slot 16. The first slot 15 extends along the first direction x, and the second slot 16 extends along the second direction y. The second slot 16 is located in the microstrip feed line 12. One end of the first slot 15 is located in the microstrip feed line 12, and the other end of the first slot 15 is located in the radiation unit 11. The first slot 15 is arranged at both ends of the second slot 16. One end of the second slot 16 is connected to one end of a first slot 15, and the other end of the second slot 16 is connected to one end of another first slot 15. By providing the first slot 15, the second slot 16, the first resonant unit 13 and the second resonant unit 14 in the radiation layer 1, the antenna 100 has a notch characteristic, which can effectively suppress in-band interference and does not require additional filters, which is conducive to the miniaturization of communication equipment.

[0072] The present invention provides an embodiment of a communication device, which includes the antenna 100 described above. The structure and function of the antenna 100 can be found in the above embodiment and will not be described in detail here.

[0073] It should be noted that the preferred embodiments of the present invention are given in the specification and drawings of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments do not serve as additional limitations on the content of the present invention. The purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all considered to be within the scope of the description of the present invention; further, it is obvious to those skilled in the art that improvements or changes can be made based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. An antenna, characterized in that: include: a dielectric layer having a first surface and a second surface opposite to each other; A radiation layer is provided on the first surface, the radiation layer including a radiation unit and a microstrip feeder, the microstrip feeder is connected to the radiation unit, the microstrip feeder extends along a first direction, the radiation layer is provided with a first slot and a second slot, the first slot extends along the first direction, the second slot extends along the second direction, the second slot is located in the microstrip feeder, one end of the first slot is located in the microstrip feeder, the other end of the first slot is located in the radiation unit, the first slot is provided at both ends of the second slot, one end of the second slot is connected to one end of one of the first slots, and the other end of the second slot is connected to one end of another of the first slots; a ground layer, disposed on the second surface; The first direction is perpendicular to the second direction, and both the first direction and the second direction are parallel to the first surface.

2. The antenna according to claim 1, wherein The distance from one end to the other end of the first gap is greater than the distance from one end to the other end of the second gap.

3. The antenna according to claim 1, characterized in that , The radiation unit includes a first rectangular patch, a first arc-shaped patch and a second arc-shaped patch. The first rectangular patch is connected to the microstrip feeder. The first arc-shaped patch and the second arc-shaped patch are respectively arranged on both sides of the first rectangular patch along the second direction. The first arc-shaped patch and the second arc-shaped patch are symmetrically arranged about the first rectangular patch.

4. The antenna according to claim 1, characterized in that , The radiation layer further includes a first resonance unit, which is arranged on one side of the microstrip feeder along the second direction; The first resonant unit includes a first resonant part and a second resonant part, the first resonant part extends along the first direction, the second resonant part is arranged at both ends of the first resonant part, one end of the second resonant part is arranged at the end of the first resonant part, and the other end of the second resonant part extends away from the first resonant part along the second direction.

5. The antenna according to claim 4, characterized in that A distance between one end and the other end of the first resonant part is greater than a distance between one end and the other end of the second resonant part.

6. The antenna according to claim 4, wherein: The first resonance unit is composed of a microstrip line.

7. The antenna according to any one of claims 4 to 6, characterized in that: The radiation layer further includes a second resonance unit, which is arranged on the other side of the microstrip feeder along the second direction, and the first resonance unit and the second resonance unit are symmetrically arranged with respect to the microstrip feeder.

8. The antenna according to claim 7, characterized in that The second resonance unit is composed of a microstrip line.

9. The antenna according to claim 1, wherein: The ground layer includes a second rectangular patch, a first right-angled trapezoidal patch and a second right-angled trapezoidal patch, the first right-angled trapezoidal patch and the second right-angled trapezoidal patch are respectively arranged on both sides of the second rectangular patch along the second direction, and the first right-angled trapezoidal patch and the second right-angled trapezoidal patch are symmetrically arranged with respect to the second rectangular patch.

10. A communication device, characterized in that: Comprising the antenna according to any one of claims 1 to 9.

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