CN117080746A - Communication terminal antenna and communication terminal - Google Patents

Communication terminal antenna and communication terminal Download PDF

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Publication number
CN117080746A
CN117080746A CN202311110250.6A CN202311110250A CN117080746A CN 117080746 A CN117080746 A CN 117080746A CN 202311110250 A CN202311110250 A CN 202311110250A CN 117080746 A CN117080746 A CN 117080746A
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CN
China
Prior art keywords
antenna
communication terminal
pad
frequency
substrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311110250.6A
Other languages
Chinese (zh)
Inventor
刘燕春
杨云春
陆原
裘进
沈涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Silex Microsystems Technology Beijing Co ltd
Original Assignee
Silex Microsystems Technology Beijing Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Silex Microsystems Technology Beijing Co ltd filed Critical Silex Microsystems Technology Beijing Co ltd
Priority to CN202311110250.6A priority Critical patent/CN117080746A/en
Publication of CN117080746A publication Critical patent/CN117080746A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/002—Protection against seismic waves, thermal radiation or other disturbances, e.g. nuclear explosion; Arrangements for improving the power handling capability of an antenna
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/10—Resonant antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)

Abstract

The application discloses a communication terminal antenna to communicate with a terminal, which relates to the antenna field, and comprises: a substrate; a feeder for transmitting radio frequency signals; at least two first antenna portions each electrically connected to the feeder line; at least two second antenna portions, each for grounding; the feed line, the first antenna parts and the second antenna parts are arranged on the substrate, at least two first antenna parts are symmetrically arranged about the first feed line, and at least two second antenna parts are symmetrically arranged about the feed line. The first antenna part and the second antenna part are respectively and symmetrically arranged with the feeder line, so that the performance of the communication antenna is improved, and the influence of the electronic part on the performance of the communication terminal antenna is restrained.

Description

Communication terminal antenna and communication terminal
Technical Field
The present application relates to the field of antennas, and in particular, to a communication terminal antenna and a communication terminal.
Background
At present, the number of the global smart phone users is extremely huge, but the existing mobile communication network has more than 80% of land area and more than 95% of ocean area which are not covered, and in order to solve the problem, the industry directly connects the mobile terminal to the mobile communication network through satellites, so that the coverage rate of the mobile communication network can be greatly improved.
However, limited equipment space for mobile terminals such as cell phones, strict antenna size requirements, and the inability to use more complex and expensive phased array satellite antennas. In addition, because the electronic components in the mobile terminal are dense, a clearance area needs to be reserved for ensuring the working performance of the antenna, so that the space occupied by the antenna is increased, and the miniaturization trend of the size of the mobile terminal is restrained.
Disclosure of Invention
The embodiment of the application provides a communication terminal antenna and a communication terminal, wherein the communication terminal antenna can work in a small-clearance or even no-clearance environment, so that the space of a mobile terminal can be saved.
A first aspect of an embodiment of the present application provides a communication terminal antenna, including:
a substrate;
a feeder for transmitting radio frequency signals;
at least two first antenna portions each electrically connected to the feeder line;
at least two second antenna portions, each for grounding;
the feed line, the first antenna parts and the second antenna parts are arranged on the substrate, at least two first antenna parts are symmetrically arranged about the first feed line, and at least two second antenna parts are symmetrically arranged about the feed line.
In some embodiments, at least two of the first antenna portions and the power feeding line are of a unitary structure, and a slot is provided between the first antenna portions and the power feeding line.
In some embodiments, the communication terminal antenna further comprises:
a support pad;
a feed pad electrically connected to the feed line;
a ground pad electrically connected to the second antenna part one-to-one;
wherein the support pad, the feed pad and the ground pad are disposed on the same plane of the substrate.
In some embodiments, at least two of the ground pads are symmetrically disposed about the feed pad.
In some embodiments, the portion of the second antenna portion connected to the ground pad is a connection portion, and a chamfer is provided on a side of the connection portion, which is close to the feed pad.
In some embodiments, the communication terminal antenna further comprises:
and a third antenna part electrically connected to the second antenna part one by one, the third antenna part and the second antenna part being located on different sides of the substrate.
In some embodiments, the third antenna portion is electrically connected to an end of the second antenna portion remote from the ground pad, and the third antenna portion is electrically disconnected from an end of the second antenna portion near the ground pad.
In some embodiments, the first antenna portion excites at a resonant frequency in the range 5210-5280MHz;
the resonance frequency range excited by the second antenna part and the third antenna part is 7010-7100MHz.
In some embodiments, the relative dielectric constant of the substrate is greater than or equal to a preset value, the preset value is determined according to a center frequency point and the size of the communication terminal antenna, the center frequency point includes a low-frequency center frequency point and a high-frequency center frequency point, the low-frequency center frequency point is the center frequency of the resonance frequency excited by the first antenna portion, and the high-frequency center frequency point is the center frequency of the resonance frequency excited by the second antenna portion.
A second aspect of an embodiment of the present application provides a communication terminal applied to the communication terminal antenna as set forth in any one of the first aspects, the communication terminal including:
the communication terminal antenna is arranged on the radio frequency main board;
the radio frequency unit is arranged on the radio frequency main board, and the feeder is electrically connected with the radio frequency unit;
and the second antenna part is electrically connected with the grounding end.
In summary, the communication terminal antenna provided by the embodiment of the application includes: a substrate; a feeder for transmitting radio frequency signals; at least two first antenna portions each electrically connected to the feeder line; at least two second antenna portions, each for grounding; the feed line, the first antenna parts and the second antenna parts are arranged on the substrate, at least two first antenna parts are symmetrically arranged about the first feed line, and at least two second antenna parts are symmetrically arranged about the feed line. Through setting up first antenna portion, second antenna portion with the feeder symmetry respectively, can be based on resonance principle, first antenna portion and second antenna portion can excite the resonance of different frequencies, enlarge the transmission signal frequency range of communication terminal antenna, increase the application scenario of antenna. The first antenna portion and the second antenna portion are symmetrically arranged with the feeder line, and when the space is fixed, the lengths of the first antenna portion and the second antenna portion can be prolonged, and the widths of the first antenna portion and the second antenna portion can be increased, so that the gain of the antenna can be increased, and the radiation range of the antenna can be increased. Therefore, the communication terminal antenna provided by the application can inhibit the influence of electronic parts around the antenna on the antenna performance, so that the communication terminal antenna can normally work in a small-clearance or even no-clearance environment.
Correspondingly, the communication terminal provided by the embodiment of the application also has the technical effects.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for the purpose of illustrating preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures.
In the drawings:
fig. 1 is a schematic structural diagram of a communication terminal antenna according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a communication terminal antenna disposed on a radio frequency motherboard according to an embodiment of the present application;
fig. 3 is a top view of a communication terminal antenna disposed on a radio frequency motherboard according to the related art according to an embodiment of the present application;
fig. 4 is a top view of an application field of a communication terminal antenna disposed on a radio frequency motherboard according to an embodiment of the present application;
fig. 5 is a return loss diagram of a communication terminal antenna according to an embodiment of the present application;
fig. 6 is a radiation pattern of a 3D electromagnetic field with a center frequency point of 5240MHz of a communication terminal antenna according to an embodiment of the present application;
fig. 7 is a schematic diagram of a radiation direction of a 3D electromagnetic field with a center frequency point of 7050MHz of a communication terminal antenna according to an embodiment of the present application;
fig. 8 is an electromagnetic field radiation pattern of a center frequency point of a communication terminal antenna provided by the embodiment of the application, which is 5240MHz, in phi=0 and 90 planes;
fig. 9 is an electromagnetic field radiation pattern of 7050MHz at phi=0 and 90 planes of a communication terminal antenna according to an embodiment of the present application.
Wherein, the corresponding relation between the reference numbers and the component names in the figures 1 to 4 is as follows:
100 communication terminal antennas; 200 radio frequency main board; 300 headroom area;
110 feeder lines; a 120 substrate; 130 a first antenna section; 140 a second antenna section; 150 a third antenna section; 160 feed pads; 170 ground pads; 180 support pads; 190 connection;
141 first side portion; 142 a second side; 191 cutting the corners.
Detailed Description
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments.
In a first aspect of the embodiment of the present application, a communication terminal antenna is provided, and fig. 1 is a schematic structural diagram of a communication terminal antenna provided in the embodiment of the present application. As shown in fig. 1, the communication terminal antenna 100 includes: a substrate 120; a feeder 110 for transmitting radio frequency signals; at least two first antenna portions 130 each electrically connected to the power feed line 110; at least two second antenna parts 140, each for grounding; wherein the feeder line 110, the first antenna portion 130 and the second antenna portion 140 are disposed on the substrate 120, at least two first antenna portions 130 are symmetrically disposed about the first feeder line 110, and at least two second antenna portions 140 are symmetrically disposed about the feeder line 110.
Referring to fig. 1, transmission or reception of radio frequency signals between a satellite and a communication terminal antenna 100 is performed through first antenna parts 130, and at least two first antenna parts 130 are electrically connected to both sides of a power supply line 110, so that during transmission of radio frequency signals, the first antenna parts 130 on both sides of the power supply line 110 form resonance, thereby exciting resonance having a certain frequency range. Accordingly, at least two second antenna parts 140 are grounded and symmetrically disposed with respect to the power supply line 110, and in the case where the power supply line 110 transmits a radio frequency signal, the second antenna parts 140 on both sides form an induced current to excite resonance having a certain frequency range.
Depending on the sizes of the first antenna portion 130 and the second antenna portion 140, the resonance frequency excited by the first antenna portion 130 may be higher or lower than the resonance frequency excited by the second antenna portion 140. The gap between the second antenna portion 140 and the feeder line 110, the gap between the second antenna portion 140 and the first antenna portion 130, and the dimensions of the first antenna portion 130 and the second antenna portion 140 may be adjusted to meet the performance requirements of the antenna.
Fig. 2 is a schematic structural diagram of a communication terminal antenna disposed on a radio frequency motherboard according to an embodiment of the present application. As shown in fig. 2, the communication terminal line may be disposed on a radio frequency circuit board, and the power supply line 110 is electrically connected to the radio frequency unit or the terminal processor through the radio frequency circuit board, so that radio frequency signals can be transmitted and received through the first antenna portion 130. The first antenna portion 130 and the second antenna portion 140 are etching illustrations, and may be etched directly on the substrate 120 or attached to the substrate 120 by using a patch antenna. The substrate 120 may be made of a material with a relatively large dielectric constant, such as ceramic, so as to reduce the size occupied by the communication terminal antenna 100, and the size of the substrate 120 in fig. 1 is 10mm long, 5mm wide and 2mm high, which is understood to mean that the size of the communication terminal antenna 100 provided by the present application is 10mm long, 5mm wide and 2mm high.
Fig. 3 is a top view of a communication terminal antenna disposed on a radio frequency motherboard according to an embodiment of the present application. As shown in fig. 3, the communication terminal antenna 100 is disposed on the radio frequency motherboard 200, and is generally disposed along edges or corners in order to save occupied motherboard space, and a reserved headroom area 300 needs to be extracted around the communication terminal antenna 100 to reduce interference of surrounding electronic components on the antenna, and the area of the headroom area 300 is generally not smaller than the occupied area of the communication terminal. As shown in fig. 1, in the communication terminal antenna 100 provided by the present application, the first antenna portion 130, the second antenna portion 140 and the power supply line 110 are all disposed on the substrate 120, and the second antenna portion 140 may include a first side portion 141 and a second side portion 142, where the first side portion 141 is attached to a surface parallel to the substrate 120, and the second side portion 142 is attached to a vertical surface of the substrate 120, so that the length of the antenna can be prolonged and no more space is occupied compared with the case of being disposed on a single surface. The first antenna part 130 is symmetrically arranged along the feeder line 110 to form a main antenna, and under the condition of a certain space, the length of the antenna can be prolonged, the width of the antenna can be increased, so that the gain of the antenna can be improved, the radiation range of the antenna can be increased, the second antenna part 140 is symmetrically arranged relative to the feeder line 110, the parasitic antenna can be used, and secondary radiation is generated, so that the gain of the antenna can be improved, and therefore, the communication terminal antenna 100 provided by the application can inhibit the influence of electronic components around the antenna on the antenna performance. And the first antenna part 130 and the second antenna part 140 are symmetrically arranged about the feeder line 110, so that resonance frequencies in two different frequency ranges can be excited respectively, the frequency range of transmission signals of the communication terminal antenna is enlarged, and the application field of the antenna is increased.
Fig. 4 is a top view of a communication terminal antenna according to an embodiment of the present application disposed on a radio frequency motherboard. As shown in fig. 4, the clearance area 300 is not required to be left on the radio frequency motherboard 200 provided by the communication terminal antenna 100, so that the radio frequency motherboard 200 does not need or reduces the setting of the clearance area 300, thereby reducing the area of the radio frequency motherboard 200 and further reducing the spatial arrangement of the whole communication terminal. In addition, in order to reduce the area of the headroom area 300, the communication terminal antenna 100 is generally disposed on the side or the corner as shown in fig. 3, and the communication terminal antenna 100 provided by the present application may reduce or even eliminate the headroom area 300, so that the placement of the communication terminal antenna 100 on the radio frequency circuit board is more flexible, and may be disposed in the central position as shown in fig. 2 or on the side as shown in fig. 4, thereby improving the flexibility of the placement of the electronic devices in the radio frequency motherboard 200.
According to some embodiments, as shown in fig. 1, at least two first antenna parts 130 are of a unitary structure with the power feed line 110, with a slot provided between the first antenna parts 130 and the power feed line 110.
For example, the first antenna portion 130 and the power feeding line 110 may be formed integrally, for example, may be disposed on the substrate 120 by etching, so as to improve the stability of the overall structure of the communication terminal antenna 100. And a slot is provided between the first antenna part 130 and the power feeding line 110, the length of the antenna can be further increased, thereby improving the gain of the antenna. In addition, since the slot is provided between the first antenna part 130 and the power feeding line 110, the length and width adjustment range of the antenna can be increased, thereby enabling a larger adjustment range of the excited resonance frequency.
According to some embodiments, as shown in fig. 1, a communication terminal antenna 100 provided in an embodiment of the present application further includes: a support pad 180; a feeding pad 160, the feeding pad 160 being electrically connected to the feeding line 110; a ground pad 170, the ground pad 170 being electrically connected to the second antenna part 140 one-to-one; wherein the support pad 180, the feed pad 160, and the ground pad 170 are disposed on the same plane of the substrate 120.
It should be noted that, the communication terminal antenna 100 is typically disposed on a PCB (Printed Circuit Board; printed circuit board) board, and a soldering position of an electronic device is typically reserved on the PCB. Therefore, the communication terminal antenna 100 provided by the application can be provided with the bonding pad, so that the communication terminal antenna 100 can be conveniently arranged on a PCB board in a welding or other modes, in addition, the stability of the substrate 120 can be ensured, the loosening of the communication terminal antenna 100 is avoided, and the signal quality of the receiving or transmitting of the communication terminal antenna 100 can be improved.
The feed pad 160, the support pad 180, and the ground pad 170 may be rectangular pads, may have other shapes, and may be provided according to the specific situation without being limited thereto. The feeding pad 160, the supporting pad 180, and the ground pad 170 are disposed on the same plane, and the feeding pad 160, the ground pad 170, and the supporting pad 180 may be uniformly disposed on the surface of the substrate 120 to ensure the stability of the substrate 120.
According to some embodiments, as shown in fig. 1, at least two ground pads 170 are symmetrically disposed about the feed pad 160.
The second antenna portions 140 are electrically connected to the ground pad 170 one-to-one, the first antenna portion 130 is electrically connected to the feed pad 160, and at least two second antenna portions 140 are symmetrically disposed about the feed line 110. The second antenna part 140 and the ground pad 170 generate induced current therebetween to excite resonance under the influence of the electromagnetic field generated from the power feeding line 110, and in order to ensure that the resonance frequencies excited by the second antenna part 140 at both sides of the power feeding line 110 are uniform, the ground pad 170 may be symmetrically disposed with respect to the power feeding pad 160 to make the induced current transmission path symmetrical.
For example, the ground pad 170 and the feed pad 160 may be disposed along one side of the substrate 120, and the ground pad 170 may be disposed at two vertex angle positions of the substrate 120, and the support pad 180 may be disposed at two vertex angle positions opposite to the ground pad 170, so as to provide a balanced supporting force to the substrate 120 to improve the stability of the substrate 120.
According to some embodiments, as shown in fig. 1, a portion of the second antenna portion 140 connected to the ground pad 170 is a connection portion 190, and a side of the connection portion 190 adjacent to the feed pad 160 is provided with a chamfer 191.
Since the communication terminal antenna 100 is generally used in a mobile terminal and the space capacity of the mobile terminal is small, the size of the communication terminal antenna 100 is also very small, and in this case, the second antenna part 140 is easily in direct contact with the feeder line 110 and the feeder pad 160, and a short circuit occurs, and therefore, a chamfer 191 is provided on a portion of the second antenna part 140 connected to the ground pad 170 and on a side close to the feeder pad 160, so that the direct contact between the feeder line 110 and the feeder pad 160 and the second antenna part 140 is avoided.
According to some embodiments, as shown in fig. 1, a communication terminal antenna 100 provided in an embodiment of the present application further includes: the third antenna part 150, the third antenna part 150 and the second antenna part 140 are electrically connected one-to-one, and the third antenna part 150 and the second antenna part 140 are located at different sides of the substrate 120.
The third antenna portion 150 and the second antenna portion 140 are electrically connected one to one and are disposed on different sides of the substrate 120, for example, the first side portion 141 is disposed on a parallel surface of the substrate 120, the second side portion 142 is disposed on a vertical surface of the substrate 120, and the third antenna portion 150 may be disposed on the other side surface of the substrate 120. This arrangement corresponds to extending the length and width of the second antenna section 140 without changing the space occupied by the communication terminal antenna 100, and since the second antenna section 140 can function as a parasitic antenna, the strength of the secondary radiation generated by the second antenna section 140 can be increased by extending the length and width of the second antenna section 140, thereby increasing the gain of the communication terminal antenna 100. Also, the frequency range in which resonance is excited by the second antenna part 140 may be adjusted by adjusting the size of the third antenna part 150.
For example, the third antenna part 150 may be manufactured, such as etched, using the same process as the first and second antenna parts 130 and 140.
According to some embodiments, as shown in fig. 1, the third antenna portion 150 is electrically connected to an end of the second antenna portion 140 remote from the ground pad 170, and the third antenna portion 150 is electrically disconnected from an end of the second antenna portion 140 near the ground pad 170.
Illustratively, the third antenna portion 150 is not fully electrically connected to the second antenna portion 140, the third antenna portion 150 is electrically connected to an end of the second antenna portion 140 remote from the ground pad 170, and an end proximate to the ground pad 170 is electrically disconnected. Such an arrangement can further lengthen the length of the second antenna section 140 as compared to the case where the third antenna section 150 is not completely electrically connected to the second antenna section 140, thereby improving the gain of the communication terminal antenna 100. And the length adjustable range of the second antenna part 140 can be increased without changing the space occupied by the communication terminal antenna 100, thereby increasing the frequency range in which the second antenna part 140 can excite resonance.
It should be noted that, for the mobile terminal device, the design can be satisfied by the return loss of the small-sized antenna being less than-5 dB, so that when the reserved height of the communication terminal antenna 100 is fixed, the gap between the feeder line 110 and the second antenna portion 140, and the gap between the second antenna portion 140 and the first antenna portion 130 can be adjusted so that the return loss of the communication terminal antenna 100 meets the design requirement.
According to some embodiments, the first antenna portion 130 excites in a resonant frequency range of 5210-5280MHz; the second antenna portion 140 and the third antenna portion 150 excite a resonance frequency range of 7010-7100MHz.
It should be noted that, the resonant frequency excited by the first antenna portion 130 is different from the resonant frequencies excited by the second antenna portion 140 and the third antenna portion 150, so as to meet the requirement of partially covering the receiving and transmitting frequency bands of the global communication satellite.
Illustratively, the global communication satellite typically has a transmit frequency range of 5091-5250MHz and a receive frequency range of 6700-7075MHz. In order to meet the requirement of communication with the global communication satellite, the communication terminal antenna 100 provided by the application can enable the resonance frequency range excited by the first antenna portion 130 to fall within the transmission frequency range of the global communication satellite, which can be 5210-5280MHz, and enable the resonance frequency excited by the second antenna portion 140 and the third antenna portion 150 to fall within the transmission frequency range of the global communication satellite, which can be 7010-7100MHz.
It should be noted that, the resonant frequency excited by the first antenna portion 130 is different from the resonant frequencies excited by the second antenna portion 140 and the third antenna portion 150, so as to meet the requirement of partially covering the receiving and transmitting frequency bands of the global communication satellite. By adjusting the dimensions of the first antenna unit 130, the second antenna unit 140, and the third antenna unit 150, respectively, according to different requirements, the first antenna unit 130 can be made to resonate at a low frequency, the second antenna unit 140 can be made to resonate at a high frequency, or the first antenna unit 130 can be made to resonate at a high frequency, and the second antenna unit 140 can be made to resonate at a low frequency, with the third antenna unit 150.
According to some embodiments, the relative dielectric constant of the substrate 120 is greater than or equal to a preset value, which is determined according to the size of the center frequency point and the communication terminal antenna 100, the center frequency point including a low frequency center frequency point and a high frequency center frequency point, the low frequency center frequency point being a center frequency of a resonance frequency excited by the first antenna part 130, the high frequency center frequency point being a center frequency of a resonance frequency excited by the second antenna part 140.
In the case of determining the antenna size, the relative dielectric constant of the substrate 120 is inversely proportional to the center frequency point of the antenna. Accordingly, after determining the low frequency center frequency point, the high frequency center frequency point, and the reserved size of the communication terminal antenna 100 of the antenna, the relative permittivity value of the substrate 120 can be determined, which is a preset value. If the relative dielectric constant of the substrate 120 actually selected is equal to or greater than the preset value, it may be indicated that the selected substrate 120 material can meet the design requirement under the requirements of the current antenna size and the center frequency point. Moreover, if the relative dielectric constant of the substrate 120 is larger than the preset value, the antenna size can be further reduced under the condition that the center frequency point is unchanged.
For example, the predetermined value of the relative permittivity may be 10, and the substrate 120 may be made of a ceramic or a high permeability magnetic material such as nickel or iron.
In order to better illustrate the technical effects achieved by the communication terminal antenna provided by the application, the embodiment of the application provides a set of simulation data.
Simulations were performed on three-dimensional electromagnetic field simulation software, such as HFSS (High Frequency Structure Simulator; high frequency structure simulation). The size of the communication terminal antenna is 10mm & 5mm & 2mm, the low-frequency central frequency point is 5240MHz, the high-frequency central frequency point is 7050MHz, the low-frequency working absolute bandwidth is 70MHz, and the high-frequency working absolute bandwidth is 90MHz.
Fig. 5 is an exemplary return loss diagram of a communication terminal antenna according to an embodiment of the present application; . As shown in fig. 5, the abscissa Freq (GHz) in fig. 5 represents the resonance frequency of the communication terminal antenna, the ordinate dB (S (1.1)) represents the return loss of the communication terminal antenna, m1 represents the return loss corresponding to the low-frequency center frequency point, and m2 represents the return loss corresponding to the high-frequency center frequency point. As can be seen from FIG. 5, in the low frequency band range and the high frequency band range, the return loss of the communication terminal antenna provided by the application is less than-5 dB, and meets the design requirements. Fig. 6 is a radiation pattern of a 3D electromagnetic field with a center frequency point of 5240MHz of a communication terminal antenna according to an embodiment of the present application. Fig. 7 is a schematic diagram of a radiation direction of a 3D electromagnetic field with a center frequency point of 7050MHz of a communication terminal antenna according to an embodiment of the present application. As shown in fig. 6 and 7, the right frame represents the correspondence between the electromagnetic field radiation gray scale variation and the gain, and the gain variation of the communication terminal antenna provided by the application in each direction can be seen by combining the gray scale diagram of the left 3D electromagnetic field radiation direction, wherein Theta (deg) represents the reference angle. Fig. 8 is an electromagnetic field radiation pattern of a center frequency point of a communication terminal antenna provided by the embodiment of the application, which is 5240MHz, in phi=0 and 90 planes. As shown in fig. 8, it can be seen that, in the case that the center frequency point of the communication terminal antenna provided by the application is 5240MHz, the gain of the phi=0 and phi=90 planes varies, where m1 represents the maximum achievable gain point of the two planes phi=0 and phi=90. Fig. 9 is an electromagnetic field radiation pattern of 7050MHz at phi=0 and 90 planes of a communication terminal antenna according to an embodiment of the present application. As shown in fig. 9, it can be seen that the gain of the planes phi=0 and phi=90 of the communication terminal antenna provided by the present application varies under the condition that the center frequency point is 5240MHz, where m1 represents the maximum achievable gain point of two planes phi=0 and phi=90.
By combining fig. 6 to 9, it can be obtained that the gain of the communication terminal antenna, which can be realized in the low frequency band and the high frequency band, meets the design requirement, and the communication terminal antenna has good efficiency in the upper hemisphere, and is suitable for receiving global communication satellites.
In a second aspect of the embodiment of the present application, as shown in fig. 2, there is provided a communication terminal including the communication terminal antenna 100 as in any one of the first aspect, the communication terminal including: the radio frequency main board 200, the communication terminal antenna 100 is arranged on the radio frequency main board 200; the radio frequency unit is arranged on the radio frequency main board 200, and the feeder line 110 is electrically connected with the radio frequency unit; the ground terminal, the second antenna portion 140 is electrically connected to the ground terminal.
For example, the power supply line 110 may be connected to a radio frequency unit disposed on the radio frequency main board 200 through a radio frequency transmission line of 50 ohms, and the second antenna part 140 is electrically connected to a ground terminal of the radio frequency main board 200.
The communication terminal antenna 100 provided by the application is arranged in the communication terminal, so that the setting of the clearance area 300 can be reduced or even removed, the area of the radio frequency main board 200 is saved, and the communication terminal antenna 100 provided by the application does not need to be arranged on the side of the radio frequency main board 200 as shown in fig. 3, so that the arrangement position of electronic devices on the radio frequency main board 200 is more flexible. Therefore, compared with other communication terminals, the communication terminal provided with the communication terminal antenna 100 provided by the application has the advantages that the number of electronic devices can be more and the flexibility is higher, and correspondingly, the communication terminal provided by the application can reduce the volume or provide stronger performance.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced equivalently; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A communication terminal antenna, the communication terminal antenna comprising:
a substrate;
a feeder for transmitting radio frequency signals;
at least two first antenna portions each electrically connected to the feeder line;
at least two second antenna portions, each for grounding;
the feed line, the first antenna parts and the second antenna parts are arranged on the substrate, at least two first antenna parts are symmetrically arranged about the first feed line, and at least two second antenna parts are symmetrically arranged about the feed line.
2. The communication terminal antenna according to claim 1, wherein,
at least two first antenna portions are of an integral structure with the feeder line, and a gap is arranged between the first antenna portions and the feeder line.
3. The communication terminal antenna according to claim 2, further comprising:
a support pad;
a feed pad electrically connected to the feed line;
a ground pad electrically connected to the second antenna part one-to-one;
wherein the support pad, the feed pad and the ground pad are disposed on the same plane of the substrate.
4. A communication terminal antenna according to claim 3, characterized in that,
at least two of the ground pads are symmetrically disposed about the feed pad.
5. The communication terminal antenna of claim 4, wherein,
the part of the second antenna part connected with the grounding pad is a connecting part, and a chamfer is arranged on one side of the connecting part, which is close to the feed pad.
6. The communication terminal antenna according to claim 1, further comprising:
and a third antenna part electrically connected to the second antenna part one by one, the third antenna part and the second antenna part being located on different sides of the substrate.
7. The communication terminal antenna of claim 6, wherein,
the third antenna part is electrically connected with one end, far away from the grounding pad, of the second antenna part, and the third antenna part is electrically disconnected with one end, close to the grounding pad, of the second antenna part.
8. The communication terminal antenna of claim 6, wherein,
the resonance frequency range excited by the first antenna part is 5210-5280MHz;
the resonance frequency range excited by the second antenna part and the third antenna part is 7010-7100MHz.
9. The communication terminal antenna according to any of claims 1-8, characterized in that,
the relative dielectric constant of the substrate is larger than or equal to a preset value, the preset value is determined according to the central frequency point and the size of the communication terminal antenna, the central frequency point comprises a low-frequency central frequency point and a high-frequency central frequency point, the low-frequency central frequency point is the central frequency of the resonance frequency excited by the first antenna part, and the high-frequency central frequency point is the central frequency of the resonance frequency excited by the second antenna part.
10. A communication terminal comprising the communication terminal antenna according to any of claims 1-9, the communication terminal comprising:
the communication terminal antenna is arranged on the radio frequency main board;
the radio frequency unit is arranged on the radio frequency main board, and the feeder is electrically connected with the radio frequency unit;
and the second antenna part is electrically connected with the grounding end.
CN202311110250.6A 2023-08-30 2023-08-30 Communication terminal antenna and communication terminal Pending CN117080746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311110250.6A CN117080746A (en) 2023-08-30 2023-08-30 Communication terminal antenna and communication terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311110250.6A CN117080746A (en) 2023-08-30 2023-08-30 Communication terminal antenna and communication terminal

Publications (1)

Publication Number Publication Date
CN117080746A true CN117080746A (en) 2023-11-17

Family

ID=88711499

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311110250.6A Pending CN117080746A (en) 2023-08-30 2023-08-30 Communication terminal antenna and communication terminal

Country Status (1)

Country Link
CN (1) CN117080746A (en)

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