CN107394384B - Printed slot inverted F antenna and Bluetooth communication device - Google Patents
Printed slot inverted F antenna and Bluetooth communication device Download PDFInfo
- Publication number
- CN107394384B CN107394384B CN201710677016.XA CN201710677016A CN107394384B CN 107394384 B CN107394384 B CN 107394384B CN 201710677016 A CN201710677016 A CN 201710677016A CN 107394384 B CN107394384 B CN 107394384B
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- antenna
- conductor
- substrate
- radiating
- slot
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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
- H01Q1/48—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 application discloses a printed slot inverted F antenna and a Bluetooth communication device. The printed slot inverted F antenna comprises a substrate and an antenna body arranged on the substrate, wherein the antenna body comprises a feed conductor and a radiation conductor which are printed on the substrate and are connected with each other, a first end of the feed conductor is connected with an antenna signal feed point of the substrate, and a second end of the feed conductor is connected with the radiation conductor through a first connecting point; the radiating conductor comprises a grounding section and a radiating section, wherein the grounding section is positioned at a first side of the first connecting point and is connected with the grounding surface of the substrate; the radiating section is positioned on the second side of the first connecting point, and the end part of the radiating section is open; an antenna slot is formed between the ground section of the radiating conductor, the feed conductor and the ground plane of the substrate. The application can effectively improve the bandwidth and reduce the impedance.
Description
Technical Field
The application relates to the field of communication devices, in particular to a printed slot inverted F antenna and a Bluetooth communication device.
Background
In order to realize information transmission through space, an antenna device is needed for an electronic product with a wireless receiving and transmitting function. At present, electronic products are developed towards low cost and miniaturization, and for antennas in the products, on one hand, the low cost requirement makes printed antennas the most economical form; on the other hand, miniaturization demands that antennas must guarantee antenna performance in ever shrinking headroom. Typical printed antenna formats currently include: 1) A half-wave dipole antenna; 2) A monopole antenna; 3) Loop antenna; 4) A PATCH antenna; 5) IFA antenna. The total length of the half-wave dipole antenna is half-wavelength, and the volume is larger; monopole antennas are quarter wavelength long, although small, they are not easily matched because of the small impedance; the length of the Loop antenna from the feed point to the place is half wavelength, and the volume is large; the PATCH antenna adopts a planar monopole antenna on a ceramic medium, so that the volume is large; IFA antennas add short-circuit conductors on the basis of monopole antennas, are small in size and easy to match, but have a narrower bandwidth.
Disclosure of Invention
The application provides a printed slot inverted F antenna with small volume and wide bandwidth.
In order to achieve the above purpose, the present application adopts the following technical scheme:
according to one aspect of the application, there is provided a printed slot inverted-F antenna comprising a substrate and an antenna body disposed on the substrate, wherein the antenna body comprises a feed conductor and a radiating conductor printed on the substrate and connected to each other, a first end of the feed conductor being connected to an antenna signal feed point of the substrate, a second end of the feed conductor being connected to the radiating conductor through a first connection point; the radiating conductor comprises a grounding section and a radiating section, wherein the grounding section is positioned at a first side of the first connecting point and is connected with the grounding surface of the substrate; the radiating section is positioned on the second side of the first connecting point, and the end part of the radiating section is open; an antenna slot is formed between the ground section of the radiating conductor, the feed conductor and the ground plane of the substrate.
Further, the width of the antenna slot is less than or equal to the width of the feed conductor.
Further, the antenna slot has a width equal to the length of the ground section.
Further, the width of the antenna slot is less than or equal to 1mm.
Further, the feed conductor extends in a first direction and the radiation conductor extends in a second direction; the first direction is perpendicular to the second direction.
Further, a clearance area is arranged on the substrate, and the radiation section of the radiation conductor is positioned in the clearance area.
Further, the headroom distances of the ends of the radiating sections of the radiating conductors in the first direction and in the second direction are equal.
Further, the headroom distance of the ends of the radiating sections of the radiating conductor in the first direction and in the second direction is equal to the length of the feed conductor.
Further, the substrate is a PCB motherboard.
The application also provides a Bluetooth communication device, which comprises the printed slot inverted F antenna.
In summary, according to the printed slot inverted-F antenna and the bluetooth communication device of the present application, the feeding conductor and the radiating conductor which are connected with each other are printed on the substrate, so that the antenna has the advantage of small size of the common IFA antenna, and the antenna slot is formed between the grounding section of the radiating conductor, the feeding conductor and the grounding surface of the substrate, thereby realizing the auxiliary adjustment of bandwidth and impedance, effectively improving bandwidth and reducing impedance.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
fig. 1 is a schematic structural diagram of an embodiment of a printed slot inverted F antenna according to the present application;
fig. 2 is a schematic structural dimension of an embodiment of a printed slot inverted F antenna according to the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the present application provides a printed antenna slot inverted F antenna (i.e., PCB slot inverted F antenna, abbreviated as PSIFA antenna), the PSIFA antenna comprising a substrate and an antenna body disposed on the substrate, wherein the antenna body comprises a feed conductor 10 and a radiation conductor 20 printed on the substrate and connected to each other, a first end of the feed conductor 10 is connected to an antenna signal feed point of the substrate, and a second end of the feed conductor 10 is connected to the radiation conductor 20 through a first connection point B; the radiation conductor 20 includes a ground section and a radiation section, the ground section being located at a first side of the first connection point B and connected to the ground plane of the substrate; the radiating section is positioned on the second side of the first connecting point B, and the end part of the radiating section is open; an antenna slot 30 is formed between the ground section of the radiating conductor 20, the feed conductor 10 and the ground plane of the substrate. Namely, the application adopts the technical scheme that the feeding conductor 10 and the radiating conductor 20 which are mutually connected are printed on the substrate, and the slot, the radiating conductor and the feeding conductor form an F shape, so that the antenna has the advantage of small size of a common IFA antenna, and the antenna slot 30 is formed between the grounding section of the radiating conductor 20, the feeding conductor 10 and the grounding surface of the substrate, thereby realizing the auxiliary adjustment of bandwidth and impedance, effectively improving the bandwidth and reducing the impedance.
As shown in connection with fig. 1, the substrate may be a PCB motherboard, i.e. the antenna body is directly printed on the PCB motherboard. In fig. 1, the feed conductor 10 extends in a first direction and the radiation conductor 20 extends in a second direction; the first direction is perpendicular to the second direction, that is, the feed conductor 10 and the radiation conductor 20 in the present application are both straight and perpendicular to each other, thereby reducing the grounding distance of the radiation conductor 20 from the motherboard. A headroom region 40 is provided on the substrate and the radiating section of the radiating conductor 20 is located in the headroom region 40, thereby achieving efficient radiation of the antenna. Preferably, the free distance of the ends of the radiating section of the radiating conductor 20 in both the first and second directions is S2, thereby ensuring that the antenna radiates signals efficiently to space.
Specifically, as shown in fig. 1, the feed conductor 10 has a length L1 and a width W1; the antenna slot 30 has a length L1 and a width S1; the length of the radiation conductor 20 is l2+s1 (where S1 corresponds to the ground section, L2 corresponds to the radiation section), and the width is W2; the length of the clearance area 40 is L2+S2, the width is W2+S2, and the feed conductor 10 realizes the feed of the antenna; the auxiliary adjustment of the impedance and the bandwidth is realized by adjusting the L1 and the S1 of the antenna slot 30; impedance and bandwidth adjustment is achieved by adjusting L2 and W2 of the radiating conductor 20; the antenna effective radiation is achieved by defining a headroom distance S2. More specifically, the width of the antenna slot 30 is less than or equal to the width of the feed conductor 10, thereby increasing the bandwidth and decreasing the impedance. Preferably, the antenna slot 30 has a width of less than or equal to 1mm, which is advantageous for efficiency. More preferably, the width of the antenna slot 30 is equal to the length of the ground section, thereby effectively reducing the wiring distance of the radiating conductor 20. Generally, the clearance distance S2 is equal to the length of the feed conductor 10, ensuring reliability and also facilitating substrate processing.
As shown in fig. 1 and 2, the present application is specifically illustrated with a PSIFA antenna operating in the bluetooth frequency band. The antenna can be used for intelligent bracelet products with Bluetooth function.
As shown in fig. 2, the length L1 of the feed conductor 10 is 3mm, the width W1 is 1mm, and one end thereof is connected to the antenna signal feed point of the substrate, denoted as a point a (denoted by reference numeral a in fig. 1). The antenna slot 30 has a length L1 equal to the length of the feed conductor 10 and a width S1 of 0.7mm. The antenna slot 30 is surrounded by the feed conductor 10, the ground plane of the substrate and the radiating conductor 20. The length l2+s1 of the radiation conductor 20 is equal to 24mm, the width W2 is 1mm, one end of the radiation conductor is short-circuited with the ground plane of the substrate, the connection point with the feed point conductor is denoted by point B (denoted by reference symbol B in fig. 1), the connection point with the ground plane of the main board is denoted by point C (denoted by reference symbol C in fig. 1), and the other end of the radiation conductor 20 is in an open circuit state. The substrate provides a signal feed point for the antenna and a reference ground plane. The headroom area 40S2 is 3mm, ensuring that the antenna can radiate signals efficiently into space.
The PSIFA antenna is approximately one quarter wavelength in size, and is comparable to the IFA antenna in size, and the antenna performance is superior to IFA. Compared with the PSIFA antenna of the Bluetooth frequency band realized by the specific size, the PSIFA antenna is used for intelligent bracelet products, the average hand mode efficiency (the efficiency when the bracelet is worn on the hand) of the frequency band of 2402 MHz-2480 MHz is 15%, the bandwidth of standing wave <2.0 is 100MHz, the average hand mode efficiency of the printed antenna realized by adopting a typical IFA mode is 10% in the frequency band of 2402 MHz-2480 MHz, and the bandwidth of standing wave <2.0 is 90MHz. Therefore, the PSIFA antenna designed by the patent is superior to the printed IFA antenna in efficiency and bandwidth. The PSIFA antenna can be widely applied to the field of various electronic products with wireless transceiver module functions, and is beneficial to miniaturization of products and improvement of antenna performance.
The application also provides a Bluetooth communication device, which comprises the printed antenna slot inverted F antenna, has the advantage of small size of a common IFA antenna, and realizes the auxiliary adjustment of bandwidth and impedance by forming the antenna slot 30 among the grounding section of the radiation conductor 20, the feed conductor 10 and the grounding surface of the substrate, thereby effectively improving the bandwidth and reducing the impedance.
The foregoing is merely a specific embodiment of the application and other modifications and variations can be made by those skilled in the art in light of the above teachings. It is to be understood by persons skilled in the art that the foregoing detailed description is provided for the purpose of illustrating the application more fully, and that the scope of the application is defined by the appended claims.
Claims (9)
1. The printed slot inverted F antenna is applied to intelligent bracelet equipment with Bluetooth function, and comprises a substrate and an antenna body arranged on the substrate, wherein the antenna body comprises a feed conductor and a radiation conductor which are printed on the substrate and are mutually connected,
the first end of the feed conductor is connected with an antenna signal feed point of the substrate, and the second end of the feed conductor is connected with the radiation conductor through a first connection point;
the radiating conductor comprises a grounding section and a radiating section, wherein the grounding section is positioned on the first side of the first connecting point and is connected with the grounding surface of the substrate; the radiating section is positioned on the second side of the first connecting point, and the end part of the radiating section is open;
an antenna slot is formed among the grounding section of the radiation conductor, the feed conductor and the grounding surface of the substrate, and the auxiliary adjustment of impedance and bandwidth is realized by adjusting the length and width of the antenna slot;
the width of the antenna slot is smaller than or equal to the width of the feed conductor.
2. The printed slot inverted-F antenna of claim 1, wherein,
the width of the antenna slot is equal to the length of the ground section.
3. The printed slot inverted-F antenna of claim 1, wherein,
the width of the antenna slot is less than or equal to 1mm.
4. The printed slot inverted-F antenna of claim 1, wherein,
the feed conductor extends in a first direction and the radiating conductor extends in a second direction; the first direction is perpendicular to the second direction.
5. The printed slot inverted-F antenna of claim 4, wherein,
and a clearance area is arranged on the substrate, and the radiation section of the radiation conductor is positioned in the clearance area.
6. The printed slot inverted-F antenna of claim 5, wherein,
the headroom distances of the ends of the radiating sections of the radiating conductors in the first direction and the second direction are equal.
7. The printed slot inverted-F antenna of claim 6, wherein,
the headroom distances of the ends of the radiating sections of the radiating conductors in both the first and second directions are equal to the length of the feed conductor.
8. The printed slot inverted-F antenna of claim 1, wherein,
the substrate is a PCB motherboard.
9. A bluetooth communication device comprising an antenna, wherein the antenna is a printed slot inverted F antenna according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710677016.XA CN107394384B (en) | 2017-08-09 | 2017-08-09 | Printed slot inverted F antenna and Bluetooth communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710677016.XA CN107394384B (en) | 2017-08-09 | 2017-08-09 | Printed slot inverted F antenna and Bluetooth communication device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107394384A CN107394384A (en) | 2017-11-24 |
| CN107394384B true CN107394384B (en) | 2023-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201710677016.XA Active CN107394384B (en) | 2017-08-09 | 2017-08-09 | Printed slot inverted F antenna and Bluetooth communication device |
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| CN (1) | CN107394384B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301466A (en) * | 2018-10-08 | 2019-02-01 | 珠海市杰理科技股份有限公司 | Inverse-F antenna, matching network and bluetooth headset |
| TWI718669B (en) * | 2019-09-16 | 2021-02-11 | 仁寶電腦工業股份有限公司 | Antenna device |
Citations (6)
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|---|---|---|---|---|
| GB0101667D0 (en) * | 2001-01-23 | 2001-03-07 | Koninkl Philips Electronics Nv | Antenna arrangement |
| CN101904050A (en) * | 2007-12-21 | 2010-12-01 | Tdk株式会社 | Antenna device and wireless communication device using the same |
| CN102623792A (en) * | 2012-03-16 | 2012-08-01 | 惠州Tcl移动通信有限公司 | Mobile portable equipment and printed antenna |
| CN103427170A (en) * | 2012-05-18 | 2013-12-04 | 捷讯研究有限公司 | Compact multi-band antenna for worldwide mobile handset applications |
| CN105122541A (en) * | 2013-04-12 | 2015-12-02 | 汤姆逊许可公司 | Multi-band antenna |
| CN207098055U (en) * | 2017-08-09 | 2018-03-13 | 歌尔科技有限公司 | Print groove gap inverse-F antenna and blue-teeth communication equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7212161B2 (en) * | 2004-11-19 | 2007-05-01 | Lenovo (Singapore) Pte. Ltd. | Low-profile embedded antenna architectures for wireless devices |
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2017
- 2017-08-09 CN CN201710677016.XA patent/CN107394384B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0101667D0 (en) * | 2001-01-23 | 2001-03-07 | Koninkl Philips Electronics Nv | Antenna arrangement |
| CN101904050A (en) * | 2007-12-21 | 2010-12-01 | Tdk株式会社 | Antenna device and wireless communication device using the same |
| CN102623792A (en) * | 2012-03-16 | 2012-08-01 | 惠州Tcl移动通信有限公司 | Mobile portable equipment and printed antenna |
| WO2013135089A1 (en) * | 2012-03-16 | 2013-09-19 | 惠州Tcl移动通信有限公司 | Mobile portable device and printed aerial |
| CN103427170A (en) * | 2012-05-18 | 2013-12-04 | 捷讯研究有限公司 | Compact multi-band antenna for worldwide mobile handset applications |
| CN105122541A (en) * | 2013-04-12 | 2015-12-02 | 汤姆逊许可公司 | Multi-band antenna |
| CN207098055U (en) * | 2017-08-09 | 2018-03-13 | 歌尔科技有限公司 | Print groove gap inverse-F antenna and blue-teeth communication equipment |
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| CN107394384A (en) | 2017-11-24 |
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