CN112467356A - Antenna assembly and terminal - Google Patents
Antenna assembly and terminal Download PDFInfo
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- CN112467356A CN112467356A CN201910847945.XA CN201910847945A CN112467356A CN 112467356 A CN112467356 A CN 112467356A CN 201910847945 A CN201910847945 A CN 201910847945A CN 112467356 A CN112467356 A CN 112467356A
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Classifications
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- 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
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- 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
-
- 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
- H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
-
- 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
-
- 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
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Abstract
The disclosure discloses an antenna assembly and a terminal, and belongs to the technical field of terminal communication. The antenna assembly includes: the antenna comprises an impedance line, a matching circuit and an antenna radiator; the impedance line is electrically connected with the matching circuit, the matching circuit is electrically connected with the antenna radiator, the base material of the matching circuit is made of Liquid Crystal Polymer (LCP), and the base material of the antenna radiator is made of Polyimide (PI). The antenna module that this disclosure provided is through utilizing LCP material preparation impedance line and matching circuit's substrate to utilize the relative simple PI material preparation antenna radiator's of low dielectric constant and technology substrate, can be based on under the prerequisite of the performance of the antenna of LCP material preparation is guaranteed, simplify the preparation technology of the antenna based on the LCP substrate, improve the production efficiency that uses the LCP as the antenna of substrate.
Description
Technical Field
The disclosure relates to the technical field of terminal communication, in particular to an antenna assembly and a terminal.
Background
With the terminal screen entering the full screen era, the arrangement space of the antenna is left to be smaller and smaller, and the arrival of the 5G era puts higher requirements on the communication technology.
In order to meet the requirement of arranging antennas with high antenna efficiency in a limited space, in the related technology, a Liquid Crystal Polymer (LCP) material is introduced to replace a traditional Polyimide (PI) material as a circuit board substrate.
In the related art, the difficulty of the processing and manufacturing process of the LCP film is high, which results in low production efficiency of the antenna using LCP as the substrate.
Disclosure of Invention
The present disclosure provides an antenna assembly and a terminal. The technical scheme is as follows:
according to a first aspect of embodiments of the present disclosure, there is provided an antenna assembly comprising: the antenna comprises an impedance line, a matching circuit and an antenna radiator;
the impedance line is electrically connected with the matching circuit;
the matching circuit is electrically connected with the antenna radiator, and the base material of the matching circuit is made of Liquid Crystal Polymer (LCP);
the base material of the antenna radiator is made of polyimide PI.
Optionally, the feed point of the antenna radiator is electrically connected to the feed point of the matching circuit, and the ground point of the antenna radiator is electrically connected to the ground point of the matching circuit.
Optionally, the feeding point of the antenna radiator and the feeding point of the matching circuit are welded through a metal pad;
and the grounding point of the antenna radiator and the grounding point of the matching circuit are welded through a metal pad.
Optionally, the feed point of the antenna radiator is connected to the feed point of the matching circuit through a metal dome;
the grounding point of the antenna radiator is connected with the grounding point of the matching circuit through a metal elastic sheet.
Optionally, the feeding point of the antenna radiator and the feeding point of the matching circuit are welded through a metal pad; the grounding point of the antenna radiator is connected with the grounding point of the matching circuit through a metal elastic sheet;
alternatively, the first and second electrodes may be,
the feed point of the antenna radiator is connected with the feed point of the matching circuit through a metal elastic sheet; and the grounding point of the antenna radiator and the grounding point of the matching circuit are welded through a metal pad.
Optionally, the impedance line, the matching circuit, and the antenna radiator are arranged in a three-layer folding manner, and the matching circuit is located between the impedance line and the antenna radiator.
Optionally, the impedance line includes, from inside to outside, a signal line, a dielectric layer, and a ground layer.
Optionally, the dielectric layer is made of LCP.
Optionally, the manufacturing process of the antenna radiator is a Flexible printed circuit board (FPC) process or a Laser Direct Structuring (LDS) process.
According to a second aspect of the embodiments of the present disclosure, there is provided a terminal, including: an antenna assembly;
the antenna assembly is the antenna assembly of the first aspect or any one of the alternatives of the first aspect.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
by utilizing LCP materials to manufacture the substrate of the impedance line and the matching circuit and utilizing PI materials with low dielectric constant and relatively simple process to manufacture the substrate of the antenna radiator, the manufacturing process of the antenna based on the LCP materials can be simplified on the premise of ensuring the performance of the antenna manufactured based on the LCP materials, and the production efficiency of the antenna using LCP as the substrate is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a schematic diagram illustrating an antenna assembly according to an exemplary embodiment;
FIG. 2 is a circuit diagram of an electrical connection of an antenna assembly according to the embodiment of FIG. 1;
FIG. 3 is a schematic diagram illustrating an antenna assembly according to another exemplary embodiment;
fig. 4 is a schematic diagram of an antenna radiator and matching circuit weld of an antenna assembly according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram of an antenna radiator welded to a matching circuit of another antenna assembly according to an embodiment of the present disclosure;
fig. 6 is a schematic diagram of an antenna radiator of an antenna assembly according to an embodiment of the present disclosure connected to a matching circuit clip;
fig. 7 is a schematic diagram of an antenna radiator of another antenna assembly according to an embodiment of the present disclosure connected to a matching circuit clip;
fig. 8 is a schematic diagram of an antenna radiator of an antenna assembly according to an embodiment of the present disclosure connected to a matching circuit;
fig. 9 is a schematic diagram of an antenna radiator and matching circuit connection of another antenna assembly according to an embodiment of the present disclosure;
fig. 10 is a schematic diagram of another arrangement of an antenna assembly according to an embodiment of the present disclosure;
fig. 11 is a schematic diagram of an impedance line structure of an antenna assembly according to an embodiment of the present disclosure;
fig. 12 is a block diagram of a terminal according to an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
It is to be understood that reference herein to "a number" means one or more and "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
The present disclosure provides an antenna assembly applied to a terminal, which can effectively solve the problem of low production efficiency of an antenna using LCP as a base material, and the following describes in detail an antenna assembly according to an embodiment of the present disclosure with reference to the accompanying drawings. For ease of understanding, several terms referred to in the present disclosure are explained first below.
1) Aerial (antenna)
An antenna is a device that radiates electromagnetic waves to or receives electromagnetic waves from a space in a radio transmission and reception system. The antenna is connected with the radio frequency front end and is also used as the last stage of the transmitting end and the first stage of the receiving end; the device is also a device for realizing energy conversion by electromagnetic wave signals and electric signals.
2) Impedance line
The impedance line is an antenna transmission line, and is used to connect the rf module and the antenna module (which may include a matching circuit and an antenna radiator), and to implement impedance matching between the rf module and the antenna module, so as to obtain maximum power transmission.
The impedance matching refers to a specific matching relation between load impedance and impedance in an information source in a signal transmission process, when the input end impedance is matched, the transmission line obtains the maximum power, when the output end impedance is matched, only voltage waves and current waves are transmitted to a transmission object on the transmission line, and all carried energy is absorbed by the load, so that the transmission object obtains the maximum transmission power.
3) Matching circuit
The matching circuit, i.e. the antenna tuner, is an impedance matching network connecting the radio frequency device and the antenna radiator, is the first stage circuit of the terminal receiving circuit, and is also the last stage circuit of the transmitting circuit, and is used for matching the impedance of the antenna radiator, etc., and the antenna radiator has the maximum radiation power at any frequency, so as to ensure the quality of the signals transmitted and received by the antenna.
4) Antenna radiator
The antenna radiator is composed of an antenna pattern and a connecting terminal, wherein the antenna pattern is used for sending or receiving electromagnetic wave signals, and the connecting terminal is used for electrically connecting the antenna pattern and the matching circuit.
5) Liquid crystalline polymers
The LCP is a novel material suitable for microwave and millimeter wave equipment, has the advantages of good electrical property, good ductility and good sealing property, and the good electrical property shows that the LCP has low dielectric constant, low dielectric loss, low hygroscopicity and the like.
6) LCP flexible board
The LCP flexible printed circuit board is a flexible printed circuit board which replaces the base material in the traditional FPC flexible printed circuit board with LCP material. The traditional FPC flexible board is of a multilayer structure consisting of copper foil, an insulating base material, a covering layer and the like, the copper foil is used as a material of a conductor circuit, a PI film is used as a circuit insulating base material, the PI film and an epoxy resin adhesive are used as covering layers for protecting and isolating the circuit, the PI flexible board is processed through a certain process, and the copper foil and the insulating base material are combined and connected together through the adhesive. And the LCP soft board replaces the PI substrate of the traditional soft board with the LCP material, and the LCP material can finally reach the performance similar to the copper foil by adjusting the thermal expansion coefficient, so that the LCP substrate and the copper foil can be bonded together by hot pressing, and the LCP soft board is thinner than the traditional FPC soft board.
7) Efficiency of antenna
Antenna efficiency refers to the ratio of the power radiated by the antenna (i.e., the power that is effectively converted into the electromagnetic wave portion) to the real power input to the antenna. The antenna efficiency is an important index for measuring the performance of the antenna.
Fig. 1 is a schematic diagram illustrating an antenna assembly according to an exemplary embodiment. Referring to fig. 1, the antenna assembly may be applied to a terminal, and includes: an impedance line 110, a matching circuit 120, and an antenna radiator 130;
the impedance line 110 is electrically connected to the matching circuit 120;
the matching circuit 120 is electrically connected to the antenna radiator 130, and the substrate of the matching circuit 120 is made of liquid crystal polymer LCP;
the material of the substrate of the antenna radiator 130 is a material with a low dielectric constant except for the liquid crystal polymer LCP material.
Optionally, the feeding point of the antenna radiator 130 is electrically connected to the feeding point of the matching circuit 120, and the grounding point of the antenna radiator 130 is electrically connected to the grounding point of the matching circuit.
Optionally, the feeding point of the antenna radiator 130 and the feeding point of the matching circuit are welded by a metal pad;
the ground point of the antenna radiator 130 and the ground point of the matching circuit are welded by a metal pad.
Optionally, the feeding point of the antenna radiator 130 is connected to the feeding point of the matching circuit through a metal dome;
the ground point of the antenna radiator 130 is connected to the ground point of the matching circuit through a metal dome.
Optionally, the feeding point of the antenna radiator 130 and the feeding point of the matching circuit 120 are welded by a metal pad; the ground point of the antenna radiator 130 is connected to the ground point of the matching circuit 120 through a metal dome;
alternatively, the first and second electrodes may be,
the feeding point of the antenna radiator 130 is connected to the feeding point of the matching circuit 120 through a metal dome; the ground point of the antenna radiator 130 and the ground point of the matching circuit 120 are welded by a metal pad.
Alternatively, the impedance line 110, the matching circuit 120, and the antenna radiator 130 are arranged in a three-layer folded manner, and the matching circuit 120 is between the impedance line 110 and the antenna radiator 130.
Optionally, the impedance line 110 includes a signal line, a dielectric layer, and a ground layer from inside to outside.
Optionally, the dielectric layer is made of LCP.
Optionally, the manufacturing process of the antenna radiator 130 is a flexible printed circuit board FPC process or a laser direct structuring technology LDS process.
The matching circuit 120 is an LCP flexible printed with a matching circuit pattern.
The antenna pattern portion of the antenna radiator 130 may be bent, and is generally formed by injection molding using a metal material with good electrical property and good ductility, such as copper, so as to ensure that the electrical length of the antenna can ensure that the radio signal can be effectively radiated into the air in a limited terminal space, where the electrical length of the antenna refers to a ratio of the physical length of the antenna to the wavelength of the electromagnetic wave signal, and in order to effectively radiate the radio signal into the air, the physical length of the antenna pattern of the antenna radiator 130 needs to be at least one fourth of the physical length of the radio signal, and meanwhile, due to the bendability of the antenna pattern, the occupation of the antenna on the internal space of the terminal can be reduced to a certain extent.
Optionally, the connection end of the antenna radiator 130 includes a feeding point and a grounding point for connecting with the matching circuit 120.
Optionally, the material of the substrate of the antenna radiator 130 is a material with a low dielectric constant, which may be PI material, or a material with a low dielectric constant, such as glass fiber, ceramic, or other fillers, and the substrate is used to improve electrical and mechanical stability.
Optionally, referring to fig. 2, fig. 2 is a circuit diagram illustrating an electrical connection of an antenna assembly according to an example of the present embodiment, as shown in fig. 2, an antenna radiator 130 is electrically connected to a matching circuit 120, and the matching circuit 120 is electrically connected to an impedance line 110.
It should be noted that the structural distribution and circuit connection among the impedance line 110, the matching circuit 120, and the antenna radiator 130 shown in fig. 1 and 2 are only illustrative, and the structural distribution and circuit connection among the impedance line 110, the matching circuit 120, and the antenna radiator 130 are not limited in the present disclosure.
To sum up, the antenna module that this disclosed embodiment provided through the substrate that utilizes LCP material preparation impedance line and matching circuit to utilize the PI material of low dielectric constant and the simple relatively technology to make the substrate of antenna radiator, can be based on the prerequisite of the performance of the antenna of LCP material preparation is guaranteed, the preparation technology of the antenna based on LCP substrate is simplified, improves the production efficiency of the antenna that uses LCP as the substrate.
Fig. 3 is a schematic diagram illustrating an antenna assembly according to an exemplary embodiment. As shown in fig. 3, the antenna assembly may be applied to a terminal, the antenna assembly including: an impedance line 110, a matching circuit 120, and an antenna radiator 130;
the impedance line 110 is electrically connected to the matching circuit 120;
the matching circuit 120 is electrically connected to the antenna radiator 130, and the substrate of the matching circuit 120 is made of liquid crystal polymer LCP;
the material of the substrate of the antenna radiator 130 is PI material;
the feed point 310 of the antenna radiator 130 is electrically connected to the feed point 310 of the matching circuit 120, and the ground point 320 of the antenna radiator 130 is electrically connected to the ground point 320 of the matching circuit 120.
Optionally, the feeding point of the antenna radiator 130 and the feeding point of the matching circuit 120 are welded by a metal pad;
the ground point of the antenna radiator 130 and the ground point of the matching circuit 120 are welded by a metal pad.
Referring to fig. 4 and 5, fig. 4 is a schematic diagram illustrating a welding of an antenna radiator and a matching circuit of an antenna assembly according to an embodiment of the present disclosure, fig. 5 is a schematic diagram illustrating a welding of an antenna radiator and a matching circuit of another antenna assembly according to an embodiment of the present disclosure, and as shown in fig. 4 and 5, a metal pad 410 is used to electrically connect the matching circuit 120 and the antenna radiator 130 together.
The matching circuit 120 corresponds to a metal pad on the antenna radiator 130, as shown in fig. 5, a metal pad used for a feeding point of the matching circuit 120 corresponds to a metal pad used for a feeding point of the antenna radiator 130, and a metal pad used for a ground point of the matching circuit 120 corresponds to a metal pad used for a ground point of the antenna radiator 130.
In fig. 4 and 5, a connection manner of welding the antenna radiator and the matching circuit is described only by taking two groups of welding points as an example, optionally, the antenna radiator and the matching circuit may be connected by more welding points according to actual needs, and the number and the positions of the welding points between the antenna radiator and the matching circuit are not limited in the embodiment of the present disclosure.
Optionally, the feeding point of the antenna radiator 130 is connected to the feeding point of the matching circuit through a metal dome;
the ground point of the antenna radiator 130 is connected to the ground point of the matching circuit through a metal dome.
Referring to fig. 6 and 7, fig. 6 is a schematic diagram illustrating a connection between an antenna radiator and a matching circuit spring of an antenna assembly according to an embodiment of the present disclosure, and fig. 7 is a schematic diagram illustrating a connection between an antenna radiator and a matching circuit spring of another antenna assembly according to an embodiment of the present disclosure, where, as shown in fig. 6 and 7, a metal spring 610 and a metal spring 620 are used to electrically connect the matching circuit 120 and the antenna radiator 130 together.
One end of the metal elastic sheet 610 is connected to a feed point of the matching circuit, and the other end is connected to a feed point of the antenna radiator; one end of the metal spring plate 620 is connected to the ground point of the matching circuit, and the other end is connected to the ground point of the antenna radiator, so that the matching circuit is electrically connected to the antenna radiator.
The metal elastic sheet can be made of metal such as copper, aluminum, stainless steel and the like, and can be selectively plated with gold, silver, nickel and other metals on the surface of the metal in order to prevent corrosion. Since the metal elastic sheets have various types and different shapes, the matching circuit and the antenna radiator can be connected according to the characteristics of different metal elastic sheets, and fig. 6 and 7 only provide two schematic connection modes for connecting the matching circuit and the antenna radiator by the metal elastic sheets.
Optionally, the feeding point of the antenna radiator 130 and the feeding point of the matching circuit 120 are welded by a metal pad; the ground point of the antenna radiator 130 is connected to the ground point of the matching circuit 120 through a metal dome;
alternatively, the first and second electrodes may be,
the feeding point of the antenna radiator 130 is connected to the feeding point of the matching circuit 120 through a metal dome; the ground point of the antenna radiator 130 and the ground point of the matching circuit 120 are welded by a metal pad.
Referring to fig. 8, fig. 8 is a schematic diagram illustrating connection between an antenna radiator and a matching circuit of an antenna assembly according to an embodiment of the present disclosure, where as shown in fig. 8, a metal pad 810 is used to connect a feeding point of the antenna radiator 130 and a feeding point of the matching circuit 120, and a metal dome 820 is used to connect a ground point of the antenna radiator 130 and a ground point of the matching circuit 120, so that the matching circuit is electrically connected to the antenna radiator.
Alternatively, the first and second electrodes may be,
referring to fig. 9, fig. 9 is a schematic diagram illustrating connection between an antenna radiator and a matching circuit of another antenna assembly according to the embodiment of the disclosure, as shown in fig. 9, a metal pad 910 is used to connect a ground point of the antenna radiator 130 and a ground point of the matching circuit 120, and a metal dome 920 is used to connect a feed point of the antenna radiator 130 and a feed point of the matching circuit 120, so that the matching circuit is electrically connected to the antenna radiator.
It should be noted that fig. 8 and fig. 9 only provide two exemplary connection manners for connecting the matching circuit and the antenna radiator by using the metal elastic sheet and the metal pad, and the number and the positions of the metal pad and the connection point of the metal elastic sheet, and the arrangement of the matching circuit and the antenna radiator are not limited in the embodiments of the present disclosure.
Alternatively, the impedance line 110, the matching circuit 120, and the antenna radiator 130 are arranged in a three-layer folded manner, and the matching circuit 120 is between the impedance line 110 and the antenna radiator 130.
Based on the flexibility of electrical connection and the flexibility of LCP material, as shown in fig. 1, the impedance line 110, the matching circuit 120, and the antenna radiator 130 are vertically arranged in three layers.
In another case, referring to fig. 10, fig. 10 is a schematic diagram illustrating another arrangement of an antenna assembly according to an embodiment of the present disclosure, as shown in fig. 10, on the premise that the impedance line 110, the matching circuit 120, and the antenna radiator are electrically connected according to the circuit shown in fig. 2, the impedance line 110, the matching circuit 120, and the antenna radiator 130 may be arranged in any form on any plane. For example, in the case shown in fig. 10, the antenna radiator 130, the matching circuit 120, and the impedance line 110 are arranged in a three-dimensional manner.
Optionally, the impedance line 110 includes a signal line, a dielectric layer, and a ground layer from inside to outside.
Referring to fig. 11, fig. 11 is a schematic diagram of an impedance line structure of an antenna assembly according to an embodiment of the present disclosure. As shown in fig. 11, the impedance line 110 includes, from inside to outside, a signal line 1110, a dielectric layer 1120 and a ground layer 1130, wherein the ground layer 1130 is grounded to shield external electromagnetic waves and prevent the external electromagnetic waves from interfering with the transmitted signals, and the conductor is typically made of copper. The signal line is mainly used for transmitting signals, and the material of the signal line is generally copper.
Optionally, the dielectric layer is made of LCP.
The LCP is a liquid crystal polymer, has excellent electrical characteristics, for example, the LCP can almost keep constant dielectric constant in the whole radio frequency range of up to 110GHz, and has good consistency; the tangent loss is very small, only 0.002, and is increased to only 0.0045 even at 110GHz, so that the method is suitable for millimeter wave application; has very small thermal expansion characteristic and can be used as an ideal high-frequency packaging material. Based on the advantages, the dielectric layer of the impedance line made of the LCP material can reduce the loss of signals in the transmission process, and the transmission efficiency of the antenna is further improved.
Optionally, the manufacturing process of the antenna radiator 130 is a flexible printed circuit board FPC process or a laser direct structuring technology LDS process.
The FPC process is a process for manufacturing a printed circuit board with patterns by utilizing a flexible base material, the base material of the traditional FPC circuit board is mainly PI material or polyester film, the FPC circuit board is composed of an insulating base material and a conducting layer, and a binder can be arranged between the insulating base material and a conducting wire layer.
The LDS process is a process of directly plating a metal antenna pattern on a molded plastic bracket by using a laser technology, or directly laser the antenna pattern on a terminal case.
Based on the above process, the antenna pattern of the antenna radiator may be an antenna pattern printed on an FPC flexible board installed inside the terminal, an antenna pattern chemically plated on an antenna carrier, or an antenna pattern directly laser-irradiated on a terminal case.
Because the two processes are mature, the manufacturing process is simple, and compared with the LCP process, the method is easy to realize and has low cost.
To sum up, the antenna module that this disclosed embodiment provided through the substrate that utilizes LCP material preparation impedance line and matching circuit to utilize the PI material of low dielectric constant and the simple relatively technology to make the substrate of antenna radiator, can be based on the prerequisite of the performance of the antenna of LCP material preparation is guaranteed, the preparation technology of the antenna based on LCP substrate is simplified, improves the production efficiency of the antenna that uses LCP as the substrate.
Referring to fig. 12, fig. 12 is a schematic structural diagram of a terminal according to an exemplary embodiment, and as shown in fig. 12, the terminal 120 includes an antenna assembly 1210, and the antenna assembly 1210 may be the antenna assembly described in any of the embodiments of fig. 1 to fig. 11.
The terminal 120 may be a terminal smart phone, a terminal tablet, a notebook, a terminal handheld device with a screen, an in-vehicle device, or the like. An antenna assembly 1210 is mounted within the terminal.
Optionally, the antenna assembly has a clearance area in the terminal, where the clearance area refers to a clean area where the antenna is disposed, that is, the antenna assembly is spaced apart from or isolated from metal elements in the terminal, a Printed Circuit Board (PCB), a battery, an oscillator, a shielding case, a camera, and the like, and since the conductive metal reflects, absorbs, and cancels electromagnetic waves and shields or interferes with antenna signals, when the antenna assembly is mounted on the terminal, the requirement of clearance needs to be met as much as possible to improve the antenna efficiency.
It should be noted that the antenna assembly installation area shown in fig. 12 is only an exemplary one, and the antenna installation area is not limited by the present disclosure.
To sum up, the terminal that this disclosed embodiment provided, through designing antenna system in the terminal, this antenna system is through utilizing LCP material preparation impedance line and matching circuit's substrate to utilize the PI material of low dielectric constant and the simple relatively of technology to make the substrate of antenna radiator, can be based on the prerequisite of the performance of the antenna of LCP material preparation in the assurance, simplify the preparation technology of the antenna based on LCP substrate, improve the production efficiency that uses LCP as the antenna of substrate.
Other aspects of the present application will be readily apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. An antenna assembly, characterized in that the antenna assembly comprises: the antenna comprises an impedance line, a matching circuit and an antenna radiator;
the impedance line is electrically connected with the matching circuit;
the matching circuit is electrically connected with the antenna radiator, and the base material of the matching circuit is made of Liquid Crystal Polymer (LCP);
the base material of the antenna radiator is made of polyimide PI.
2. The antenna assembly of claim 1,
the feed point of the antenna radiator is electrically connected with the feed point of the matching circuit, and the ground point of the antenna radiator is electrically connected with the ground point of the matching circuit.
3. The antenna assembly of claim 2,
the feed point of the antenna radiator and the feed point of the matching circuit are welded through a metal pad;
and the grounding point of the antenna radiator and the grounding point of the matching circuit are welded through a metal pad.
4. The antenna assembly of claim 2,
the feed point of the antenna radiator is connected with the feed point of the matching circuit through a metal elastic sheet;
the grounding point of the antenna radiator is connected with the grounding point of the matching circuit through a metal elastic sheet.
5. The antenna assembly of claim 2,
the feed point of the antenna radiator and the feed point of the matching circuit are welded through a metal pad; the grounding point of the antenna radiator is connected with the grounding point of the matching circuit through a metal elastic sheet;
alternatively, the first and second electrodes may be,
the feed point of the antenna radiator is connected with the feed point of the matching circuit through a metal elastic sheet; and the grounding point of the antenna radiator and the grounding point of the matching circuit are welded through a metal pad.
6. The antenna assembly of any one of claims 1 to 5,
the impedance line, the matching circuit, and the antenna radiator are arranged in a three-layer folded manner, and the matching circuit is located between the impedance line and the antenna radiator.
7. The antenna assembly of any one of claims 1 to 5,
the impedance line comprises a signal line, a dielectric layer and a ground layer from inside to outside.
8. The antenna assembly of claim 7,
the dielectric layer is made of LCP materials.
9. The antenna assembly of any one of claims 1 to 5,
the manufacturing process of the antenna radiator is a flexible printed circuit board FPC process or a Laser Direct Structuring (LDS) process.
10. A terminal, characterized in that the terminal comprises: an antenna assembly;
the antenna assembly is as claimed in any one of claims 1 to 9.
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| CN201910847945.XA CN112467356B (en) | 2019-09-09 | 2019-09-09 | Antenna assembly and terminal |
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| CN201910847945.XA CN112467356B (en) | 2019-09-09 | 2019-09-09 | Antenna assembly and terminal |
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| CN112467356B CN112467356B (en) | 2024-01-02 |
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