CN116885433A - PCB antenna and wireless communication mobile terminal - Google Patents
PCB antenna and wireless communication mobile terminal Download PDFInfo
- Publication number
- CN116885433A CN116885433A CN202310891457.5A CN202310891457A CN116885433A CN 116885433 A CN116885433 A CN 116885433A CN 202310891457 A CN202310891457 A CN 202310891457A CN 116885433 A CN116885433 A CN 116885433A
- Authority
- CN
- China
- Prior art keywords
- radiation
- radiating
- antenna
- pcb
- arm
- 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
Links
- 230000005855 radiation Effects 0.000 claims abstract description 59
- 230000008878 coupling Effects 0.000 claims abstract description 16
- 238000010168 coupling process Methods 0.000 claims abstract description 16
- 238000005859 coupling reaction Methods 0.000 claims abstract description 16
- 239000003990 capacitor Substances 0.000 claims abstract description 14
- 230000005404 monopole Effects 0.000 description 3
- LAXBNTIAOJWAOP-UHFFFAOYSA-N 2-chlorobiphenyl Chemical compound ClC1=CC=CC=C1C1=CC=CC=C1 LAXBNTIAOJWAOP-UHFFFAOYSA-N 0.000 description 2
- 101710149812 Pyruvate carboxylase 1 Proteins 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
Classifications
-
- 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
- H01Q1/12—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
-
- 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 invention discloses a PCB antenna and a wireless communication mobile terminal, wherein the PCB antenna comprises a PCB board and an antenna structure arranged on the PCB board, the antenna structure comprises a first radiation unit and a second radiation unit, the first radiation unit comprises a first radiation arm and a first radiation sheet, the first radiation arm is also electrically connected with the PCB board, and the diameter of the first radiation sheet is larger than that of the first radiation arm; the second radiation unit comprises a second radiation arm and a second radiation sheet, the second radiation arm is also electrically connected with the PCB, and the diameter of the second radiation sheet is larger than that of the second radiation arm; the first radiation piece and the second radiation piece are arranged at intervals oppositely to form a coupling capacitor between the first radiation piece and the second radiation piece, and the coupling capacitor is used for controlling the resonance frequency of electromagnetic waves transmitted between the first radiation unit and the second radiation unit. By the PCB antenna, the occupied area of the antenna is effectively reduced, and the cost of the antenna is not additionally increased.
Description
Technical Field
The invention relates to the technical field of antenna transmission structures, in particular to a PCB antenna and a wireless communication mobile terminal.
Background
Wireless mobile terminals need to communicate wirelessly by means of antennas, and therefore antennas have a significant role in wireless mobile terminal devices. Because the area of the main board of the wireless mobile terminal is limited, the PCB antenna is a common antenna scheme for designers in order to save the occupied space of the antenna on the main board as much as possible. For PCB antennas, as the name implies, conductive traces are printed on the PCB board, typically 1/4 wavelength long, to radiate or receive electrical signals. The most common structures of PCB antennas today are pifa (planar inverted F antenna), monopole (monopole antenna), ceramic antennas. The Pifa and monopole antennas have a relatively large footprint, which is detrimental to ultra-thin designs of mobile terminals, while the ceramic antennas, while having a relatively small footprint, are costly.
Disclosure of Invention
The invention aims to provide a PCB antenna with relatively small occupied area and low cost and a wireless communication mobile terminal.
In order to achieve the above object, the invention discloses a PCB antenna, which comprises a PCB board and an antenna structure arranged on the PCB board, wherein the antenna structure comprises a first radiating unit and a second radiating unit, the first radiating unit comprises a first radiating arm, the first radiating arm comprises a first end and a second end, the first end is provided with a first radiating sheet, the second end is electrically connected with the PCB board, and the diameter of the first radiating sheet is larger than that of the first radiating arm; the second radiating unit comprises a second radiating arm, the second radiating arm comprises a third end and a fourth end, the third end is provided with a second radiating piece, the fourth end is electrically connected with the PCB, and the diameter of the second radiating piece is larger than that of the second radiating arm; the first radiation piece and the second radiation piece are oppositely arranged at intervals so as to form a coupling capacitor between the first radiation piece and the second radiation piece, and the coupling capacitor is used for controlling the resonance frequency of electromagnetic waves transmitted between the first radiation unit and the second radiation unit.
Preferably, a groove is formed in the PCB, and the antenna structure is integrated in the groove.
Preferably, the groove is positioned at the edge of the PCB.
Preferably, the first radiating element and the second radiating element are respectively located on the upper and lower different height planes.
Preferably, the second end of the first radiating arm is electrically connected with the PCB through a first matching circuit, and the first matching circuit is configured to configure matching impedance of the antenna structure.
Preferably, the fourth end of the second radiating arm is electrically connected to the PCB through a second matching circuit, and the second matching circuit is used for fine tuning the resonant frequency of the antenna structure.
Preferably, the first radiating unit further comprises a third radiating arm vertically connected with the first radiating arm, and the other end of the third radiating arm is electrically connected with the PCB.
Preferably, the other end of the third radiating arm is electrically connected with the PCB through a third matching circuit, and the third matching circuit is used for fine tuning the resonant frequency of the antenna structure.
The invention also discloses a wireless communication mobile terminal, which comprises a terminal body, wherein the PCB antenna is arranged on the terminal body.
Compared with the prior art, the PCB antenna disclosed by the technical scheme of the invention comprises two radiating sheets (namely a first radiating sheet and a second radiating sheet) which are arranged at intervals, and a coupling capacitor is formed between the two radiating sheets, and the coupling capacitor directly influences the resonant frequency of the antenna, so that the resonant frequency of the antenna can be effectively adjusted by adjusting the size and the distance between the two radiating sheets, and the whole area of the antenna is not required to be greatly adjusted as in a traditional inverted F antenna; therefore, the PCB antenna not only effectively reduces the occupied area of the antenna, but also does not additionally increase the cost of the antenna.
Drawings
Fig. 1 is a perspective view of a PCB antenna according to an embodiment of the present invention.
Fig. 2 is a side view of fig. 1.
Fig. 3 is a rear view of fig. 1.
Detailed Description
In order to describe the technical content, the constructional features, the achieved objects and effects of the present invention in detail, the following description is made in connection with the embodiments and the accompanying drawings.
The embodiment discloses a wireless communication mobile terminal, such as mobile phone, notebook, ITO equipment, and the like, and the mobile terminal includes a terminal body, is provided with PCB antenna on the terminal body, and this PCB antenna is used for receiving and transmitting wireless signal.
As shown in fig. 1 and 2, the PCB antenna includes a PCB board 1 and an antenna structure provided on the PCB board 1, the antenna structure including a first radiating element 2 and a second radiating element 3.
The first radiating element 2 comprises a first radiating arm 20 in a strip shape, the first radiating arm 20 comprises a first end 200 and a second end 201, the first end 200 is provided with a first radiating sheet 21 in a sheet shape, the second end 201 is electrically connected with the PCB board 1, and the diameter of the first radiating sheet 21 is larger than that of the first radiating arm 20.
The second radiation unit 3 comprises a second radiation arm 30 in a strip shape, the second radiation arm 30 comprises a third end 300 and a fourth end 301, the third end 300 is provided with a second radiation piece 31 in a sheet shape, the fourth end 301 is electrically connected with the PCB board 1, and the diameter of the second radiation piece 31 is larger than that of the second radiation arm 30.
Specifically, the first radiation piece 21 and the second radiation piece 31 may be square, circular, oval, or the like.
The first radiation sheet 21 and the second radiation sheet 31 are disposed opposite to each other with a space therebetween to form a coupling capacitance between the first radiation sheet 21 and the second radiation sheet 31 for controlling a resonance frequency of electromagnetic waves transmitted between the first radiation unit 2 and the second radiation unit 3. In this embodiment, the first radiation piece 21 and the second radiation piece 31 are two conductive metal pole pieces, and the two conductive metal pole pieces use air as a medium to form a coupling capacitor. Coupling capacitances of respective magnitudes are configured by configuring areas of the first radiation sheet 21, the second radiation sheet 31, and a spacing d between the first radiation sheet 21 and the second radiation sheet 31 so that the antenna structure exhibits respective resonant frequencies.
For example, the areas S=4mm of the first and second radiation plates 21 and 31 2 The distance d=0.2 mm between the first radiation piece 21 and the second radiation piece 31 to obtain a communication band of 2.4G BT/WIFI.
On the other hand, a groove 10 is formed in the PCB 1, and the antenna structure is integrated in the groove 10 to improve the integration level of the PCB 1 and prevent the antenna structure from affecting the installation of other components. Specifically, the recess 10 is located at the edge of the PCB board 1 to facilitate assembly of the antenna structure.
On the other hand, the first radiating element 2 and the second radiating element 3 are respectively located on two different height planes, the first radiating arm 20, the first radiating sheet 21, the second radiating arm 30 and the second radiating sheet 31 are all extended in the same horizontal direction, so that the first radiating sheet 21 and the second radiating sheet 31 are oppositely arranged up and down, and the first radiating arm 20 and the second radiating arm 30 are respectively located on two opposite sides of the groove 10. Specifically, based on the multilayer structure of the PCB board 1, two conductors of different layers are separated to form the first radiation unit 2 and the second radiation unit 3.
On the other hand, as shown in fig. 3, the second end 201 of the first radiating arm 20 is electrically connected to the PCB board 1 through the first matching circuit P1, and the first matching circuit P1 is used for configuring the matching impedance of the antenna structure to improve the transmission performance of the antenna structure.
On the other hand, the first radiating unit 2 further includes a third radiating arm 22 vertically connected to the first radiating arm 20, and the other end of the third radiating arm 22 is electrically connected to the PCB board 1. In this embodiment, the radiation power of the antenna structure can be further improved by the third radiation arm 22.
On the other hand, the fourth end 301 of the second radiating arm 30 is electrically connected to the PCB board 1 through a second matching circuit P2, and the second matching circuit P2 is used for fine tuning the resonant frequency of the antenna structure. In this embodiment, the coupling capacitor is used to configure the design frequency of the antenna structure, but in implementation, the actual resonant frequency shown by the coupling capacitor always varies from the design value, so that the resonant frequency of the antenna structure can be fine-tuned by the second matching circuit P2 so that the resonant frequency shown by the coupling capacitor is within the target value range.
In addition, the other end of the third radiating arm 22 is electrically connected to the PCB board 1 through a third matching circuit P3, and the third matching circuit P3 is also used for fine tuning the resonant frequency of the antenna structure, so as to adjust the resonant frequency of the antenna in a larger range.
In summary, the wireless mobile terminal disclosed in the above embodiment of the present invention is provided with a PCB antenna, where the PCB antenna includes two radiating plates disposed at two opposite intervals, and a coupling capacitor is formed between the two radiating plates, and the coupling capacitor directly affects the resonant frequency of the antenna, so that the resonant frequency of the antenna can be effectively adjusted by adjusting the size and the spacing between the two radiating plates, without greatly adjusting the overall area of the antenna as in the conventional inverted-F antenna. Therefore, through the PCB antenna, the occupied area of the antenna is effectively reduced, and the cost of the antenna is not additionally increased.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the scope of the claims, which follow, as defined in the claims.
Claims (9)
1. The PCB antenna is characterized by comprising a PCB board and an antenna structure arranged on the PCB board, wherein the antenna structure comprises a first radiating unit and a second radiating unit, the first radiating unit comprises a first radiating arm, the first radiating arm comprises a first end and a second end, the first end is provided with a first radiating piece, the second end is electrically connected with the PCB board, and the diameter of the first radiating piece is larger than that of the first radiating arm; the second radiating unit comprises a second radiating arm, the second radiating arm comprises a third end and a fourth end, the third end is provided with a second radiating piece, the fourth end is electrically connected with the PCB, and the diameter of the second radiating piece is larger than that of the second radiating arm; the first radiation piece and the second radiation piece are oppositely arranged at intervals so as to form a coupling capacitor between the first radiation piece and the second radiation piece, and the coupling capacitor is used for controlling the resonance frequency of electromagnetic waves transmitted between the first radiation unit and the second radiation unit.
2. The PCB antenna of claim 1, wherein a recess is provided in the PCB board, the antenna structure being integrated in the recess.
3. The PCB antenna of claim 2, wherein the groove is located at an edge of the PCB board.
4. The PCB antenna of claim 1, wherein the first radiating element and the second radiating element are located on two different elevation planes, respectively.
5. The PCB antenna of claim 1, wherein the second end of the first radiating arm is electrically connected to the PCB board through a first matching circuit, the first matching circuit configured to configure a matching impedance of the antenna structure.
6. The PCB antenna of claim 1, wherein the fourth end of the second radiating arm is electrically connected to the PCB board through a second matching circuit for fine tuning a resonant frequency of the antenna structure.
7. The PCB antenna of claim 1, wherein the first radiating element further comprises a third radiating arm that is vertically connected to the first radiating arm, the other end of the third radiating arm being electrically connected to the PCB board.
8. The PCB antenna of claim 7, wherein the other end of the third radiating arm is electrically connected to the PCB board through a third matching circuit for fine tuning a resonant frequency of the antenna structure.
9. A wireless communication mobile terminal, characterized by comprising a terminal body on which the PCB antenna according to any one of claims 1 to 8 is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310891457.5A CN116885433A (en) | 2023-07-19 | 2023-07-19 | PCB antenna and wireless communication mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310891457.5A CN116885433A (en) | 2023-07-19 | 2023-07-19 | PCB antenna and wireless communication mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116885433A true CN116885433A (en) | 2023-10-13 |
Family
ID=88256573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310891457.5A Pending CN116885433A (en) | 2023-07-19 | 2023-07-19 | PCB antenna and wireless communication mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116885433A (en) |
-
2023
- 2023-07-19 CN CN202310891457.5A patent/CN116885433A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6429818B1 (en) | Single or dual band parasitic antenna assembly | |
| US7242353B2 (en) | Bracket-antenna assembly and manufacturing method of the same | |
| EP2996196B1 (en) | Multi-antenna system and mobile terminal | |
| WO2001033665A1 (en) | Single or dual band parasitic antenna assembly | |
| US20090262022A1 (en) | Antenna assembly | |
| KR20010075231A (en) | Capacitively-tune broadband antenna structure | |
| US7768463B2 (en) | Antenna assembly, printed wiring board and device | |
| US7317901B2 (en) | Slotted multiple band antenna | |
| EP2381529B1 (en) | Communications structures including antennas with separate antenna branches coupled to feed and ground conductors | |
| EP1629569B1 (en) | Internal antenna with slots | |
| EP2541678B1 (en) | Mobile communication antenna device and mobile communication terminal device | |
| US20100309087A1 (en) | Chip antenna device | |
| EP3823096B1 (en) | Antenna structure and electronic device | |
| TWI403021B (en) | Carrier and device | |
| JPH05259724A (en) | Print antenna | |
| US7187331B2 (en) | Embedded multiband antennas | |
| KR101552360B1 (en) | Pcb type antenna having via hole structure | |
| US20100039328A1 (en) | Annular antenna | |
| CN109473787B (en) | Shark fin antenna assembly | |
| US20080094303A1 (en) | Planer inverted-F antenna device | |
| CN111478016B (en) | Mobile device | |
| KR20020065811A (en) | Printed slot microstrip antenna with EM coupling feed system | |
| US20040125033A1 (en) | Dual-band antenna having high horizontal sensitivity | |
| KR20010003035A (en) | Printing-Type Inverted F Antenna | |
| US8159400B2 (en) | Chip antenna and mobile-communication terminal having the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |