CN210040546U - Miniaturized PCB omnidirectional antenna - Google Patents
Miniaturized PCB omnidirectional antenna Download PDFInfo
- Publication number
- CN210040546U CN210040546U CN201920995109.1U CN201920995109U CN210040546U CN 210040546 U CN210040546 U CN 210040546U CN 201920995109 U CN201920995109 U CN 201920995109U CN 210040546 U CN210040546 U CN 210040546U
- Authority
- CN
- China
- Prior art keywords
- radiation
- piece
- grounding
- short
- circuit branch
- 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.)
- Active
Links
Images
Landscapes
- Details Of Aerials (AREA)
- Waveguide Aerials (AREA)
Abstract
The utility model discloses a miniaturized PCB omnidirectional antenna, which comprises a PCB substrate, a radiation piece, a grounding piece, a radiation piece short circuit branch, a grounding piece short circuit branch, a connecting resistor, a coaxial connector and a coaxial cable connected with the coaxial connector; one side of the PCB substrate is provided with a radiation piece and a radiation piece short-circuit branch knot, the other side of the PCB substrate is provided with a grounding piece and a grounding piece short-circuit branch knot, the radiation piece and the grounding piece are distributed in a bilateral symmetry mode, and the grounding piece short-circuit branch knot is connected with the radiation piece short-circuit branch knot through a connecting resistor. The utility model discloses simple structure has advantages such as small, with low costs, electric property is good, the equipment is simple, the frequency band broad, is applicable to the requirement that communication such as GSM, RFID covered.
Description
Technical Field
The utility model relates to a mobile communication technology field, specific theory relates to a miniaturized PCB omnidirectional antenna.
Background
In order to realize the functions of the conventional PCB terminal omnidirectional antenna, the conventional PCB terminal omnidirectional antenna has relatively large volume, narrow frequency band and poor electrical performance, and if the conventional PCB terminal omnidirectional antenna cannot cover a wider working frequency band, has high return loss and the like, the PCB terminal omnidirectional antenna in the prior art cannot meet the requirements of high integration of terminal mobile equipment on the volume and the performance of the antenna.
Therefore, there is a need for a PCB omni directional antenna with small size, good electrical performance and simple fabrication for a mobile terminal to overcome the above-mentioned drawbacks.
The above-mentioned drawbacks, worth improving.
Disclosure of Invention
In order to overcome the not enough of current technique, the utility model provides a miniaturized PCB omnidirectional antenna.
The utility model discloses technical scheme as follows:
a miniaturized PCB omnidirectional antenna comprises a radiation part and a transmission part connected with the radiation part, wherein the radiation part comprises a PCB substrate, a radiation piece, a grounding piece, a radiation piece short-circuit branch, a grounding piece short-circuit branch and a connecting resistor;
the transmission part comprises a coaxial connector and a coaxial cable connected with the coaxial connector;
the radiation sheet and the radiation sheet short-circuit branch are arranged on one side of the PCB substrate, one connector at the middle end of the radiation sheet is connected with the radiation sheet short-circuit branch, and the other connector at the middle end of the radiation sheet is connected with a core wire of the coaxial cable;
the opposite side of PCB base plate is provided with the grounding lug and grounding lug short circuit minor matters, a joint of grounding lug middle-end with grounding lug short circuit minor matters is connected, another joint of grounding lug middle-end with coaxial cable's outer conductor is connected, just grounding lug short circuit minor matters with radiation piece short circuit minor matters passes through connecting resistance connects.
Furthermore, the radiation piece and the grounding piece are arranged in a bilateral symmetry mode.
Furthermore, the radiation sheet is provided with a half-wrapped radiation sheet, a bent-path folded radiation sheet and a joint radiation sheet, and the half-wrapped radiation sheet, the bent-path folded radiation sheet and the joint radiation sheet are sequentially connected;
the grounding piece is provided with a half-wrapped grounding piece, a bend folding grounding piece and a joint grounding piece, wherein the half-wrapped grounding piece is connected with the bend folding grounding piece and the joint grounding piece in sequence.
Furthermore, the bent folding radiation piece has at least one bent.
Furthermore, the radiation sheet is fixedly connected with the radiation sheet short circuit branch, and the grounding sheet is fixedly connected with the grounding sheet short circuit branch.
Further, the resistance value of the connecting resistor is 50 ohms.
Furthermore, the connecting resistor and the short-circuit branch of the radiation sheet are fixedly connected through welding, and the connecting resistor and the short-circuit branch of the grounding sheet are fixedly connected through welding.
The utility model has the advantages that the utility model adopts the radiation sheet and the grounding sheet to carry out the symmetrical folding scheme, so as to achieve the purpose of miniaturization of the antenna and reduce the size of the antenna; through radiation piece short circuit minor matters and grounding piece short circuit minor matters according to certain resistance value intercommunication, form a complete current loop, widened the effective working frequency channel width of antenna, promoted antenna electrical performance, the utility model discloses an antenna size becomes littleer, and cost reduction, electrical performance can promote, in addition effective working frequency channel widen, consequently, the utility model discloses more extensive application space has.
In summary, the present invention has the advantages of small size, low cost, good electrical performance, simple assembly, wide frequency band, etc., and is suitable for the requirements of communication coverage such as GSM, RFID, etc.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the positions of the components of the present invention.
In the figure, 1, a coaxial connector; 2. a coaxial cable; 3. connecting a resistor; 4. a radiation sheet; 41. half-wrapping a radiation sheet; 42. Folding the radiation sheet at the bend; 43. a connector radiation sheet; 5. a ground plate; 51. semi-wrapping the grounding plate; 52. a bend folding grounding sheet; 53. a joint grounding plate; 6. a PCB substrate; 7. a ground plate short circuit branch; 8. the radiation sheet is short-circuited.
Detailed Description
The invention is further described with reference to the following figures and embodiments:
as shown in fig. 1-2, a miniaturized PCB omnidirectional antenna includes a radiation portion and a transmission portion connected to the radiation portion, wherein the radiation portion includes a PCB substrate 6, a radiation piece 4, a ground piece 5, a radiation piece short-circuit branch 8, a ground piece short-circuit branch 7, and a connection resistor 3.
The transmission section includes a coaxial connector 1 and a coaxial cable 2 connected to the coaxial connector 1;
one side of the PCB substrate 6 is provided with a radiation sheet 4 and a radiation sheet short-circuit branch 8, one joint at the middle end of the radiation sheet 4 is connected with the radiation sheet short-circuit branch 8, and the other joint at the middle end of the radiation sheet 4 is connected with a core wire of the coaxial cable 2;
the other side of PCB base plate 6 is provided with grounding piece 5 and grounding piece short circuit minor matters 7, and a joint and the grounding piece short circuit minor matters 7 of grounding piece 5 middle-end are connected, and another joint and the outer conductor of coaxial cable 2 of grounding piece 5 middle-end are connected, and grounding piece short circuit minor matters 7 and radiation piece short circuit minor matters 8 pass through connecting resistance 3 and are connected, and grounding piece short circuit minor matters 7 and radiation piece short circuit minor matters 8 are the off-state promptly, are through connecting resistance 3 connect-make.
Preferably, in a specific embodiment, the front surface of the PCB substrate 6 is provided with the radiation patch 4, the radiation patch short-circuit branch 8, the ground patch 5, the ground patch short-circuit branch 7, and the coaxial cable 2.
Preferably, in a specific embodiment, the radiation plate 4 and the ground plate 5 are arranged in bilateral symmetry.
Further, the radiation sheet 4 is provided with a half-wrapped radiation sheet 41, a bent folded radiation sheet 42 and a connector radiation sheet 43, and the half-wrapped radiation sheet 41, the bent folded radiation sheet 42 and the connector radiation sheet 43 are sequentially connected; wherein half package radiation piece 41 sets up along the edge of PCB base plate 6 one side, and the middle part position of half package radiation piece 41's notch is connected with bend folding radiation piece 42, and a part radiation piece 4 is the bending folding form and distributes, is favorable to reducing the size of antenna, improves the electric property of antenna. The tail of the bent folding radiation sheet 42 is provided with a connector radiation sheet 43, namely, one connector of the connector radiation sheet 43 is connected with the short circuit branch section 8 of the radiation sheet, and the other connector of the connector radiation sheet 43 is connected with the core wire of the coaxial cable 2, specifically: the utility model discloses well 6 one sides of PCB base plate be provided with half packet of radiation piece 41, and half packet of radiation piece 41 distributes along the border position of 6 one sides of PCB base plate, later rejoin the folding radiation piece 42 of bend, the folding radiation piece 42 of bend is provided with the multichannel curved, the distribution of bending turning back on PCB base plate 6 of radiation piece promptly, the tail end of the folding radiation piece 42 of last bend is provided with joint radiation piece 43, opposite side at PCB base plate 6 then is provided with grounding piece 5, the grounding piece is bilateral symmetry distribution with the radiation piece and sets up, consequently the utility model discloses can make full use of PCB base plate space rationally, scientific and reasonable overall arrangement can reduce the volume of whole antenna, improves the electrical property of antenna.
In addition, the tab radiation piece 43 is provided at a middle position of the PCB substrate 6.
The grounding piece 5 is provided with a half-wrapped grounding piece 51, a bent folded grounding piece 52 and a joint grounding piece 53, and the half-wrapped grounding piece 51, the bent folded grounding piece 52 and the joint grounding piece 53 are sequentially connected.
Preferably, in a specific embodiment, the number of the bent bends of the bent folded radiating patch 42 is at least one, and the size of the antenna can be reduced by using the bent folded radiating patch 42, so that the space of the PCB substrate can be scientifically and reasonably utilized, and the cost can be reduced.
Preferably, in a specific embodiment, the radiation sheet 4 and the radiation sheet short-circuit branch 8 are fixedly connected by welding, and the ground sheet 5 and the ground sheet short-circuit branch 7 are fixedly connected by welding.
Preferably, in a specific embodiment, the resistance of the connection resistor 3 is 50 ohms.
Preferably, in a specific embodiment, the connecting resistor 3 and the radiation sheet short-circuit branch 8, and the connecting resistor 3 and the ground sheet short-circuit branch 7 are all fixedly connected by welding.
The utility model adopts the symmetrical folding scheme of the radiation sheet and the grounding sheet to achieve the purpose of miniaturization of the antenna and reduce the size of the antenna; through radiation piece short circuit minor matters and grounding piece short circuit minor matters according to certain resistance value intercommunication, form a complete current loop, widened the effective working frequency channel width of antenna, promoted antenna electrical performance, the utility model discloses an antenna size becomes littleer, and cost reduction, electrical performance can promote, in addition effective working frequency channel widen, consequently, the utility model discloses more extensive application space has.
In summary, the present invention has the advantages of small size, low cost, good electrical performance, simple assembly, wide frequency band, etc., and is suitable for the requirements of communication coverage such as GSM, RFID, etc.
The utility model discloses specific embodiment:
a miniaturized PCB omnidirectional antenna is provided with a coaxial connector, a coaxial cable, a connecting resistor, a radiation piece, a grounding piece, a PCB substrate, a grounding piece short-circuit branch knot and a radiation piece short-circuit branch knot. The connecting resistor, the radiation sheet, the grounding sheet short-circuit branch and the radiation sheet short-circuit branch are arranged on the front surface of the PCB substrate, and the PCB substrate is made of a dielectric material; the coaxial connector adopts a 50 ohm impedance connector, the coaxial cable is a 50 ohm coaxial cable, and the coaxial connector is connected with one end of the coaxial cable and can be fixedly connected or connected in a compression joint mode through welding; one end of the short circuit branch of the radiation sheet is connected with the radiation sheet, and the short circuit branch of the radiation sheet and the radiation sheet are made of weldable metal materials; one end of the grounding sheet short circuit branch is connected with the grounding sheet, and the grounding sheet short circuit branch and the grounding sheet are both made of weldable metal materials; the other end of the short-circuit branch section of the radiation sheet is connected with the other end of the short-circuit branch section of the grounding sheet in a welding mode through a connecting resistor to form a current loop, wherein the resistance value of the connecting resistor is 50 ohms; the core wire at the other end of the coaxial cable is connected with the radiation sheet through welding, the outer conductor of the coaxial cable is connected with the grounding sheet through welding, and the coaxial cable is a high-frequency coaxial cable.
Tests show that in the frequency band range of 902-928 MHz, the standing-wave ratio is less than or equal to 2, the gain is 2dBi, the impedance is 50 ohms, the maximum power is 50W, and the requirements of terminal communication coverage of GSM, RFID and the like are completely met.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
The above exemplary description of the present invention is made in conjunction with the accompanying drawings, and it is obvious that the present invention is not limited by the above manner, and various improvements made by the method concept and technical solution of the present invention or by directly applying the concept and technical solution of the present invention to other occasions without improvement are all within the protection scope of the present invention.
Claims (6)
1. A miniaturized PCB omnidirectional antenna comprises a radiation part and a transmission part connected with the radiation part, and is characterized in that the radiation part comprises a PCB substrate, a radiation piece, a grounding piece, a radiation piece short-circuit branch, a grounding piece short-circuit branch and a connecting resistor;
the transmission part comprises a coaxial connector and a coaxial cable connected with the coaxial connector;
the radiation sheet and the radiation sheet short-circuit branch are arranged on one side of the PCB substrate, one connector at the middle end of the radiation sheet is connected with the radiation sheet short-circuit branch, and the other connector at the middle end of the radiation sheet is connected with a core wire of the coaxial cable;
the opposite side of PCB base plate is provided with the grounding lug and grounding lug short circuit minor matters, a joint of grounding lug middle-end with grounding lug short circuit minor matters is connected, another joint of grounding lug middle-end with coaxial cable's outer conductor is connected, just grounding lug short circuit minor matters with radiation piece short circuit minor matters passes through connecting resistance connects.
2. The miniaturized PCB omni directional antenna of claim 1, wherein the radiating patch and the ground patch are disposed in bilateral symmetry.
3. The miniaturized PCB omnidirectional antenna of claim 2, wherein the radiating patch is provided with a half-wrapped radiating patch, a bent folded radiating patch and a connector radiating patch, and the half-wrapped radiating patch, the bent folded radiating patch and the connector radiating patch are sequentially connected;
the grounding piece is provided with a half-wrapped grounding piece, a bend folding grounding piece and a joint grounding piece, wherein the half-wrapped grounding piece is connected with the bend folding grounding piece and the joint grounding piece in sequence.
4. The miniaturized PCB omnidirectional antenna of claim 1, wherein the radiating patch is fixedly connected to the radiating patch short circuit stub by welding, and the ground patch is fixedly connected to the ground patch short circuit stub by welding.
5. The miniaturized PCB omni directional antenna of claim 1, wherein the connection resistor has a resistance of 50 ohms.
6. The miniaturized PCB omnidirectional antenna of claim 1, wherein the connecting resistor is fixedly connected to the radiating patch short-circuit stub, and the connecting resistor is fixedly connected to the ground patch short-circuit stub by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920995109.1U CN210040546U (en) | 2019-06-28 | 2019-06-28 | Miniaturized PCB omnidirectional antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920995109.1U CN210040546U (en) | 2019-06-28 | 2019-06-28 | Miniaturized PCB omnidirectional antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210040546U true CN210040546U (en) | 2020-02-07 |
Family
ID=69349096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920995109.1U Active CN210040546U (en) | 2019-06-28 | 2019-06-28 | Miniaturized PCB omnidirectional antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210040546U (en) |
-
2019
- 2019-06-28 CN CN201920995109.1U patent/CN210040546U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4548281B2 (en) | Broadband antenna | |
| CN110676575B (en) | Miniaturized high-gain dual-frequency WIFI antenna | |
| CN104638367A (en) | Dual-band microstrip antenna | |
| TWM393052U (en) | Dipole antenna assembly | |
| CN204424449U (en) | Dual-band microstrip antenna | |
| WO2021082807A1 (en) | Antenna | |
| CN105409058A (en) | Antenna apparatus and terminal | |
| CN210040546U (en) | Miniaturized PCB omnidirectional antenna | |
| CN110277637A (en) | A kind of ultra-wideband monopole paster antenna for Partial Discharge Detection | |
| CN216529344U (en) | Miniaturized multi-band antenna applied to rail transit 5G mobile communication and terminal thereof | |
| CN103050770B (en) | Broadband LTE (Long Term Evolution) combined element antenna unit | |
| CN105356056B (en) | A kind of router antenna being provided with anti oxidation layer | |
| CN101447600B (en) | Antenna | |
| CN104681976A (en) | Antenna structure and wireless communication device applying antenna structure | |
| CN209804888U (en) | Ultra-wideband and miniaturized PCB directional antenna | |
| CN107959111B (en) | Dual-frequency electric small slot antenna | |
| CN101572356B (en) | Loop antenna device | |
| CN218385701U (en) | Three-frequency broadband single-feed-point omnidirectional high-gain antenna | |
| CN209804896U (en) | Ultra-thin PCB directional antenna | |
| CN216015709U (en) | WIFI6E on-board terminal antenna based on CPW structure | |
| CN204516895U (en) | Antenna device | |
| EP3975340B1 (en) | Transmission structure with dual-frequency antenna | |
| CN220382312U (en) | Multi-frequency MIMO combined antenna with high gain | |
| CN213071364U (en) | Quasi-plane broadband log periodic antenna | |
| CN114883788B (en) | Antenna, radio frequency front end module and communication equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |