CN223079365U - Antenna and communication equipment - Google Patents

Abstract

The embodiment of the utility model relates to the technical field of antennas, in particular to an antenna and communication equipment, which comprises a radiation layer, wherein a radiator, a microstrip feeder and an open circuit branch are arranged, the microstrip feeder is connected with the radiator, and the open circuit branch is connected with the microstrip feeder; the microstrip feeder is provided with a first gap, the radiator is provided with two second gaps which are symmetrical about the central line of the microstrip feeder in the length direction, the radio frequency stratum comprises a first surface and a second surface which are oppositely arranged, the radiation layer is arranged on the first surface, and the radio frequency stratum is arranged on the second surface. Through the mode, the antenna has the double in-band notches, so that in-band interference is effectively restrained.

Description

Antenna and communication equipment

Technical Field

The embodiment of the utility model relates to the technical field of antennas, in particular to an antenna and communication equipment.

Background

The planar broadband antenna is an antenna with broadband characteristics, has a planar structure, can keep stable performance in a wider frequency range, and has the advantages of high transmission rate, low cost, light weight, simple design, low profile, high data transmission rate, easy integration with other components and the like, is widely focused and intensively studied by practitioners and scholars in the field, and is applied to the fields of radar systems, detection imaging and the like.

The inventor of the utility model finds that the prior planar broadband antenna does not have in-band double notch at present and can not effectively inhibit in-band interference, thereby greatly limiting the use of the planar broadband antenna on a modern wireless communication terminal.

Disclosure of utility model

The technical problem to be solved by the embodiment of the utility model is to provide an antenna and communication equipment, which can be provided with an in-band notch and can effectively inhibit in-band interference.

The technical scheme includes that the antenna comprises a radiation layer, a microstrip feeder and an open-circuit branch, wherein the microstrip feeder is connected with the radiator, the open-circuit branch is connected with the microstrip feeder, the microstrip feeder is provided with a first gap, the radiator is provided with two second gaps which are symmetrical with each other about the central line of the microstrip feeder in the length direction, and the dielectric layer comprises a first surface and a second surface which are oppositely arranged, the radiation layer is arranged on the first surface, and the radio frequency layer is arranged on the second surface.

Optionally, an included angle between the second slot and the central line of the microstrip feeder in the length direction is 45 °.

Optionally, the included angle between the other second slot and the central line of the microstrip feeder in the length direction is 315 °.

Optionally, the shape of the first gap is L-shaped.

Optionally, the microstrip feeder is provided with a first side line, the first slot comprises a first vertical slot and a first horizontal slot, one end of the first vertical slot is communicated with the first side line, the other end of the first vertical slot is communicated with the first horizontal slot, the first vertical slot is perpendicular to the central line of the microstrip feeder in the length direction, and the first horizontal slot is parallel to the central line of the microstrip feeder in the length direction.

Optionally, the open-circuit branch is L-shaped.

Optionally, the microstrip feeder is provided with a second side line, the open-circuit branch comprises a first vertical branch and a first horizontal branch, one end of the first vertical branch is connected with the second side line, the other end of the first vertical branch is connected with the first horizontal branch, the first vertical branch is perpendicular to the central line of the microstrip feeder in the length direction, and the first horizontal branch is parallel to the central line of the microstrip feeder in the length direction.

Optionally, the projection of the radiator on the dielectric layer is octagonal.

Optionally, the characteristic impedance of the microstrip feeder is 50 ohms.

Optionally, the perpendicular bisectors of the microstrip feeder, the radiator and the radio frequency stratum are all coincident with the perpendicular bisectors of the dielectric layer.

In order to solve the technical problem, the other technical scheme adopted by the utility model is that the communication equipment comprises a shell and the antenna, wherein the antenna is arranged on the shell.

The antenna and the communication equipment have the advantages that the antenna and the communication equipment are different from the situation of the prior art, the antenna and the communication equipment comprise a radiation layer, a radio frequency stratum and a medium layer, wherein the radiation layer, the medium layer and the radio frequency stratum are sequentially overlapped, the radiation layer is provided with a radiator, a microstrip feeder and an open circuit branch, the microstrip feeder is connected with the radiator, the open circuit branch is connected with the microstrip feeder, the microstrip feeder is provided with a first gap, the radiator is provided with two second gaps, the two second gaps are symmetrical relative to the central line of the microstrip feeder in the length direction, the medium layer comprises a first surface and a second surface which are oppositely arranged, the radiation layer is arranged on the first surface, and the radio frequency stratum is arranged on the second surface. Through the structure, the antenna can form the in-band double notch, so that the in-band interference can be effectively restrained.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments of the present utility model will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an exploded structure of an antenna according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of an assembly structure of an antenna according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of an antenna according to an embodiment of the present utility model in a top view;

Fig. 4 is a partial enlarged view of a portion C in fig. 3;

Fig. 5 is a schematic diagram of a bottom view of a broadband antenna according to an embodiment of the present utility model;

fig. 6 is a schematic diagram of a top view of a wideband antenna according to an embodiment of the present utility model;

fig. 7 is a bottom view labeling diagram of a broadband antenna according to an embodiment of the present utility model;

fig. 8 is a top view labeling diagram of a wideband antenna according to an embodiment of the present utility model;

FIG. 9 is a simulation graph of reflection coefficient of a wideband antenna provided by an embodiment of the present utility model under preferred parameters;

fig. 10 is a graph of simulation results of maximum gain of a wideband antenna under preferred parameters according to an embodiment of the present utility model;

Fig. 11 is a graph of radiation efficiency simulation results of a wideband antenna provided by an embodiment of the present utility model under preferred parameters;

Fig. 12 is a radiation pattern at 4.0GHz for a wideband antenna provided by an embodiment of the utility model;

Fig. 13 is a radiation pattern at 8.0GHz for a wideband antenna provided by an embodiment of the utility model;

Fig. 14 is a radiation pattern at 12.0GHz for a wideband antenna provided by an embodiment of the utility model.

Detailed Description

In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-4, an antenna 1000 includes a radiation layer 3, a dielectric layer 2 and a radio frequency stratum 1, where the radiation layer 3, the dielectric layer 2 and the radio frequency stratum 1 are stacked in sequence, the radiation layer 3 is responsible for radiating electromagnetic waves and receiving electromagnetic waves in the antenna 1000, specifically, the radiation layer 3 has two working modes depending on a unique structure, namely a radiation mode and a receiving mode, in the radiation mode, the radiation layer 3 can convert received electric energy into electromagnetic wave energy and radiate the electromagnetic wave into a surrounding space, so as to ensure that the antenna 1000 realizes an information transmission function, and in the receiving mode, the radiation layer 3 is responsible for capturing electromagnetic waves from the space, converting the electromagnetic waves into electric signals, and transmitting the electric signals to a circuit connected with the electric signals for processing. It will be appreciated that the configuration of the radiation layer 3 and the arrangement of the components within the radiation layer 3 determine the pattern of the antenna 1000, i.e. the ability of the antenna 1000 to radiate or receive electromagnetic waves in different directions. The dielectric layer 2 is used for realizing isolation between the radiation layer 3 of the antenna 1000 and the radio frequency stratum 1, avoiding short circuit caused by direct contact between the radiation layer 3 and the radio frequency stratum 1, effectively ensuring normal operation of the antenna 1000, enhancing radiation and impedance matching, and ensuring that the radiation layer 3 can keep the shape and position of the radiation layer 3 as a structure for supporting the radiation layer 3 and the radio frequency stratum 1, thereby stably radiating and receiving electromagnetic waves, further ensuring the integral structural strength of the antenna 1000, and ensuring the working stability and reliability of the antenna 1000. The rf stratum 1 is also called a ground conductor layer or a ground plane in other embodiments, and the rf stratum 1 is used for providing a reference potential and providing a stable working environment for the antenna 1000, and is used for reflecting electromagnetic waves from below the radiation layer 3, reducing radiation loss of the radiation layer 3 downwards, enhancing radiation capability of the antenna 1000 and reducing radiation interference.

It can be understood that the radiation layer 3, the dielectric layer 2 and the radio frequency stratum 1 together form a microstrip structure, the radiation efficiency and polarization purity of the antenna 1000 are affected by the structural layout of the radiation layer 3, the influence of different structural layouts on the antenna 1000 is different, and the size and shape of the radiation layer 3 determine the frequency response, the directional diagram, the gain and the like of the antenna 1000. The dielectric constant of the dielectric layer 2 affects the impedance matching, bandwidth and radiation efficiency of the antenna 1000, and the thickness affects the operating frequency, impedance bandwidth and radiation performance of the antenna 1000.

For the above-mentioned radiation layer 3, referring to fig. 1, the radiation layer 3 is provided with a radiator 31, a microstrip feed line 33, and an open circuit branch 32, the microstrip feed line 33 is connected to the radiator 31, and the open circuit branch 32 is connected to the microstrip feed line 33. The microstrip feed line 33 is provided with a first slit 311, the radiator 31 is provided with two second slits 331, and the two second slits 331 are symmetrical with respect to a center line of the microstrip feed line 33 in a length direction.

It will be appreciated that the perpendicular bisector of the microstrip feed line 33 coincides with the perpendicular bisector of the radiator 31, so that the microstrip feed line 33 and the radiator 31 as a whole exhibit a symmetrical structure.

It should be noted that, the shape of the radiator 31 affects the radiation pattern of the antenna 1000, and the directivity of the antenna 1000 may be optimized by adjusting the side length, the angle and the relative positions of the radiator 31 with different shapes and other elements, so that the antenna 1000 has a stronger radiation capability in a specific direction and weaker radiation in other directions. In this embodiment, preferably, the projection of the radiator 31 on the dielectric layer 2 is an octagon, and the octagon radiator 31 is in a symmetrical shape, so as to optimize the radiation path of the electromagnetic wave of the antenna 1000, reduce the loss of energy in the transmission process, and improve the radiation efficiency of the antenna 1000. Further to simplify the processing manner of the octagonal radiator 31, the octagonal radiator 31 may be formed of one rectangular radiation patch and two trapezoidal radiation patches, the long bottom side of the trapezoidal radiation patch being equal in length to the long side of the rectangular radiation patch, and the long bottom side of the trapezoidal radiation patch being connected to the long side of the rectangular radiation patch, the two trapezoidal radiation patches being symmetrically arranged with respect to the rectangular radiation patch.

In some embodiments, an angle between one of the second slots 331 and a centerline of the microstrip feed line 33 in the length direction is 45 °, and/or an angle between the other of the second slots 331 and a centerline of the microstrip feed line 33 in the length direction is 315 °.

In order to unify the measurement standard of the angle, the length direction of the microstrip feed line 33 is designated as the X direction, and the counterclockwise direction is designated as the measurement standard direction of the angle, as shown in fig. 3, the angle a is 45 ° and the angle B is 315 °.

In some embodiments, referring to fig. 1-4, the first slot 311 provided by the microstrip feeder 33 is L-shaped, so as to increase the coupling effect between the microstrip feeder 33 and the radiator 31 of the antenna 1000, thereby facilitating better impedance matching, reducing reflection of signals during transmission, improving overall efficiency of the antenna 1000, and the L-shaped first slot 311 can excite multiple resonance modes, so as to broaden the impedance bandwidth of the antenna 1000. Further, the microstrip feed line 33 is provided with a first side line 332, the first slot 311 includes a first vertical slot 3311 and a first horizontal slot 3312, one end of the first vertical slot 3311 is communicated with the first side line 332, the other end of the first vertical slot 3311 is communicated with the first horizontal slot 3312, the first vertical slot 3311 is perpendicular to a central line of the microstrip feed line 33 in a length direction, and the first horizontal slot 3312 is parallel to the central line of the microstrip feed line 33 in the length direction.

In some embodiments, referring to fig. 1-4, the open branch 32 is L-shaped, so as to improve the circuit performance of the antenna 1000, improve the transmission efficiency of the antenna 1000, expand the bandwidth, maintain stable performance, and improve the anti-interference capability of the antenna 1000 by circular polarization. Further, the microstrip feeder 33 is provided with a second side line 333, the open-circuit branch 32 includes a first vertical branch 321 and a first horizontal branch 322, one end of the first vertical branch 321 is connected to the second side line 333, the other end of the first vertical branch 321 is connected to the first horizontal branch 322, the first vertical branch 321 is perpendicular to a central line of the microstrip feeder 33 in the length direction, and the first horizontal branch 322 is parallel to the central line of the microstrip feeder 33 in the length direction.

It should be noted that the first side line 332 is parallel to the second side line 333, the first vertical slit 3311 is parallel to the first vertical branch 321, and the first horizontal slit 3312 is parallel to the first horizontal branch 322.

In some embodiments, the projections of the first slot 311 and the open branch 32 on the radio frequency stratum 1 are all located on the radio frequency stratum 1 completely, stray radiation of the microstrip feeder 33 is reduced through the shielding effect of the radio frequency stratum 1, the overall performance of the antenna is improved, the first slot 311 is further coupled with the radiator 31, the radiation efficiency and the radiation performance of the antenna 1000 are improved, and further, the overall structure of the antenna 1000 is more compact due to the position layout, so that the integration level of the antenna 1000 is improved.

The characteristic impedance of the microstrip feed line 33, which is a physical quantity describing the relationship between the voltage and the current on the transmission line, is a critical parameter that directly affects the transmission efficiency of the signal, the power distribution, and the overall performance of the antenna 1000, and determines the impedance matching that the signal of the antenna 1000 encounters during transmission, and in this embodiment, the characteristic impedance of the microstrip feed line 33 is preferably 50 ohms.

For the dielectric layer 2 described above, referring to fig. 1, the dielectric layer 2 includes a first surface 21 and a second surface 22 disposed opposite to each other, the radiation layer 3 is disposed on the first surface 21, and the radio frequency formation 1 is disposed on the second surface 22.

In some embodiments, the perpendicular bisectors of the microstrip feed line 33, the radiator 31, and the radio frequency layer 1 are all coincident with the perpendicular bisectors of the dielectric layer 2 to ensure that the radiation layer 3 is entirely located at the center of the dielectric layer 2, and the microstrip feed line 33 includes a first alignment edge (not labeled) perpendicular to the X direction, and the dielectric layer includes a second alignment edge (not labeled) perpendicular to the X direction, where the first alignment edge and the second alignment edge remain flush in the stacked state.

It will be appreciated that the perpendicular bisectors of the microstrip feed line 33, the radiator 31, the rf layer 1 and the dielectric layer 2 are all parallel to the X-direction.

It should be noted that, the radiation performance of the antenna 1000 is determined by the size parameter of the radiator 31, the bandwidth and the reflection coefficient of the antenna 1000 are determined by the size parameter of the radio frequency stratum 1 and the size parameter of the radiator 31, and the center frequency of the notch and the isolation at the center frequency of the notch are determined by the size parameter of the L-shaped open stub 32 and the size parameter of the L-shaped first slot 331 located on the 50 ohm microstrip feeder 33.

For the above-mentioned rf formation 1, referring to fig. 1, the shape of the rf formation 1 is rectangular, and the projection of the rf formation 1 on the dielectric layer 2 coincides with a partial area of the dielectric layer 2, and a partial edge of the rf formation 1 completely coincides with a partial edge of the dielectric layer 2.

In the embodiment of the utility model, the antenna 1000 comprises a radiation layer 3, a dielectric layer 2 and a radio frequency stratum 1, wherein the radiation layer 3, the dielectric layer 2 and the radio frequency stratum 1 are sequentially stacked, the radiation layer 3 is provided with a radiator 31, a microstrip feeder 33 and an open circuit branch 32, the microstrip feeder 33 is connected with the radiator 31, and the open circuit branch 32 is connected with the microstrip feeder 33. The microstrip feeder 33 is provided with a first gap 311, the radiator 31 is provided with two second gaps 331, the two second gaps 331 are symmetrical about a central line of the microstrip feeder 33 in the length direction, the dielectric layer 2 comprises a first surface 21 and a second surface 22 which are oppositely arranged, the radiation layer 3 is arranged on the first surface 21, and the radio frequency stratum 1 is arranged on the second surface 22. Through the structure, the antenna 1000 forms an in-band notch by virtue of the open branch 32 and the first gap 311, so that in-band interference of the antenna 1000 is effectively inhibited, and the application of the antenna 1000 under different requirements on communication equipment is enlarged.

For the convenience of readers to better understand the concept of the present utility model, the following wideband antenna 2000 embodiment based on the above structure is provided and a simulation experiment is performed, please refer to fig. 5-8, wherein the dielectric constant of the designated dielectric layer 2 is 3.38, the dielectric loss is 0.0022, the thickness is 0.762mm, and the radiation layer 3 and the radio frequency stratum 1 are both copper plated materials and have a thickness of 0.035mm.

Referring to fig. 7 and 8, L _P is designated as the length of the dielectric layer 2, W _P is the width of the dielectric layer 2 or the width of the rf formation 1, L _G is the length of the rf formation 1, H _R is the height of the rectangular radiating patch constituting the octagonal radiator 31, H _T is the height of the trapezoidal radiating patch constituting the octagonal radiator 31, L _R is the length of the rectangular radiating patch constituting the octagonal radiator 31 or the length of the long bottom side of the trapezoidal radiating patch constituting the octagonal radiator 31, L _T is the length of the short bottom side of the trapezoidal radiating patch constituting the octagonal radiator 31, L _S1 is the length of the second slit 331 located on the radiator 31, W _S1 is the width of the second slit 331 located on the radiator 31, L _S2 is the length of the first vertical slit 3311 constituting the L-shaped first slit 311, L _S3 is the length of the first horizontal slit 3312 constituting the L-shaped first slit 311, W _S2 is the width of the first horizontal slit 3312 constituting the L-shaped first slit 311, L ₁ is the length of the first vertical branch 321 constituting the L-shaped open branch 32, L ₂ is the length of the first horizontal branch 322 constituting the L-shaped open branch 32, W ₁ is the width of the first horizontal branch 322 constituting the L-shaped open branch 32, L _F is the length of the microstrip feed line 33, and W _F is the width of the microstrip feed line 33.

The relationship between the notch center frequency f _N1、f_N2 and the size parameters of the L-shaped open-circuit branch 32 and the L-shaped first slit 311 is:

where ε _r is the dielectric constant of the medium and c is the light transmission speed in vacuum.

The design parameters are optimized corresponding to the above structure, so as to obtain a wideband antenna 2000 with a design example of ：L_P＝30.0mm,W_P＝30.0mm,W_G＝9.8mm,H_R＝12.0mm,H_T＝8.0mm,L_R＝19.0mm,L_T＝3.0mm,L_S1＝8.0mm,W_S1＝0.4mm,L_S2＝0.2mm,L_S3＝5.8mm,W_S1＝0.1mm,L₁＝0.3mm,L₂＝8.9mm,W₁＝0.1mm,L_F＝10.0mm,W_F＝1.8mm.

The reflection coefficient of the wideband antenna 2000 after parameter optimization is shown in fig. 9. As can be seen from FIG. 9, the bandwidth range with the reflection coefficient smaller than-10 is 3.6GHz to 13.2GHz, the center frequency is 8.4GHz, the absolute bandwidth is 9.6GHz, the relative bandwidth is 114.3%, the ultra-wideband characteristics are shown, four transmission poles are respectively positioned at 4.3GHz,7.6GHz,9.5GHz and 12.3GHz in the passband, the flatness of the maximum gain and the radiation efficiency in the passband is ensured, two transmission zero points are positioned at 5.7GHz and 8.8GHz in the notch, and the in-band interference at the frequency can be effectively inhibited.

The simulation result diagram of the maximum gain of the broadband antenna 2000 is shown in fig. 10. As can be seen from FIG. 10, the average maximum gain in the passband is 3.97dBi, which shows the advantage of high maximum gain, and the gains at the center frequency of the notch are only-5.3 dBi and-7.72 dBi, which show the characteristic of high isolation, with one notch at each of 5.7GHz and 8.8 GHz.

The simulation result diagram of the maximum gain of the broadband antenna 2000 is shown in fig. 11. As can be seen from fig. 11, the average radiation efficiency in the passband is 92.9%, which shows the advantage of high radiation efficiency, and the radiation efficiency at the center frequency of the notch is only 34.3% and 19.7% at 5.7GHz and 8.8GHz, respectively, which shows the characteristic of high isolation.

The radiation patterns of the wideband antenna 2000 at 4.0GHz, 8.0GHz and 12.0GHz are shown in fig. 12, 13 and 14, and as can be seen from fig. 12, 13 and 14, the wideband antenna 2000 is an omni-directional wideband antenna 2000.

The present utility model also provides an embodiment of a communication device, where the communication device includes a housing and the antenna 1000 described above, and for the structure and the function of the antenna 1000, please refer to the above embodiment, and details are not repeated here, where the antenna 1000 is disposed in the housing.

In some embodiments, the housing is provided with a receiving groove, and the antenna is received in the receiving groove, so as to reduce the contact distance between the antenna 1000 and the external environment, thereby reducing the influence of the housing on the working state of the antenna 1000, and the receiving groove effectively limits the antenna 1000, so that the antenna is prevented from unexpected shaking when the communication device is acted by external force.

In some embodiments, by integrally designing the housing and the antenna, for example, securing the antenna within an insulating region of the housing, such a configuration may enable seamless integration of the antenna and the housing, improving overall aesthetics and structural strength.

It should be noted that while the present utility model has been illustrated in the drawings and described in connection with the preferred embodiments thereof, it is to be understood that the utility model may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but are to be construed as providing a full breadth of the disclosure. The above technical features are further combined with each other to form various embodiments which are not listed above and are all considered as the scope of the present utility model described in the specification, further, the improvement or transformation can be carried out by the person skilled in the art according to the above description, and all the improvements and transformation shall fall within the protection scope of the appended claims.

Claims (10)

1. An antenna, comprising: A radiation layer is provided with a radiator, a microstrip feeder and an open-circuit branch, wherein the microstrip feeder is connected to the radiator, and the open-circuit branch is connected to the microstrip feeder; The microstrip feed line is provided with a first gap; The radiator is provided with two second slots, and the two second slots are symmetrical about the center line in the length direction of the microstrip feed line; RF formation; The dielectric layer comprises a first surface and a second surface which are arranged opposite to each other, the radiation layer is arranged on the first surface, and the radio frequency layer is arranged on the second surface. 2. The antenna according to claim 1, characterized in that An included angle between the second slot and a center line of the microstrip feed line in the length direction is 45°, and/or an included angle between the second slot and a center line of the microstrip feed line in the length direction is 315°. 3. The antenna according to claim 1, characterized in that The first gap is in an L-shape. 4. The antenna according to claim 3, characterized in that The microstrip feed line is provided with a first side line; The first gap includes a first vertical gap and a first horizontal gap, one end of the first vertical gap is connected to the first side line, the other end of the first vertical gap is connected to the first horizontal gap, the first vertical gap is perpendicular to the center line of the microstrip feeder line in the length direction, and the first horizontal gap is parallel to the center line of the microstrip feeder line in the length direction. 5. The antenna according to claim 1, characterized in that The open branch is in an L-shape. 6. The antenna according to claim 5, characterized in that The microstrip feed line is provided with a second side line; The open-circuit branch includes a first vertical branch and a first horizontal branch, one end of the first vertical branch is connected to the second edge line, the other end of the first vertical branch is connected to the first horizontal branch, the first vertical branch is perpendicular to the center line of the microstrip feeder line in the length direction, and the first horizontal branch is parallel to the center line of the microstrip feeder line in the length direction. 7. The antenna according to claim 1, characterized in that: The projection of the radiator on the dielectric layer is an octagon. 8. The antenna according to claim 1, characterized in that: The characteristic impedance of the microstrip feed line is 50 ohms. 9. The antenna according to any one of claims 1 to 8, characterized in that: The perpendicular midline of the microstrip feeder, the perpendicular midline of the radiator, and the perpendicular midline of the radio frequency formation all coincide with the perpendicular midline of the dielectric layer. 10. A communication device, comprising a housing and the antenna according to any one of claims 1 to 9, wherein the antenna is arranged on the housing.