CN218300237U - Antenna element circuit board and antenna - Google Patents
Antenna element circuit board and antenna Download PDFInfo
- Publication number
- CN218300237U CN218300237U CN202221860614.3U CN202221860614U CN218300237U CN 218300237 U CN218300237 U CN 218300237U CN 202221860614 U CN202221860614 U CN 202221860614U CN 218300237 U CN218300237 U CN 218300237U
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- balanced feed
- feed connecting
- antenna element
- connecting wire
- antenna
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Abstract
The utility model relates to a signal processing field, the utility model provides an antenna element circuit board, its structure contains the base plate and prints the metal circuit on the base plate, balanced feed connecting wire encircles the ground connection metal area among the metal circuit, wherein antenna element interface two is connected to first balanced feed connecting wire one end, second balanced feed connecting wire one end is connected to first balanced feed connecting wire other end, antenna element interface is connected to the second balanced feed connecting wire other end, the line width of first balanced feed connecting wire is greater than the line width of second balanced feed connecting wire, first balanced feed connecting wire is spoon shape, second balanced feed connecting wire is snakelike curve, the long handle line segment of third balanced feed connecting wire and first balanced feed connecting wire is connected, and third balanced feed connecting wire is the rectangle arch. This antenna element circuit board matches effectually, low loss, can improve high frequency gain, the utility model also provides an antenna including above-mentioned antenna element circuit board.
Description
Technical Field
The utility model relates to a signal processing field, more specifically the antenna element circuit board and antenna that says so.
Background
Since the dipole antenna is a balanced type antenna and the coaxial cable is an unbalanced transmission line, a balun is added between the dipole antenna and the coaxial cable, and different baluns are designed according to the required performance of the antenna.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an antenna oscillator circuit board that matching effect is good, low-loss, can improve high frequency gain is provided, utilizes different characteristic impedance's microstrip line as balun, still provides an antenna including this antenna oscillator circuit board simultaneously.
The utility model discloses a following technical scheme realizes above-mentioned purpose.
An antenna oscillator circuit board structurally comprises a substrate and a metal circuit printed on the upper layer of the substrate, wherein the bottom layer of the substrate is a nonmetal bottom layer, the metal circuit comprises two antenna oscillator interfaces, a balance feed connecting line connected between the two antenna oscillator interfaces, a grounding metal area surrounded by the balance feed connecting line and a coaxial cable interface, a gap is formed between the balance feed connecting line and the grounding metal area, and the two antenna oscillator interfaces are not electrically connected with each other; the grounding metal area is internally provided with an area for accommodating a coaxial cable interface, and the grounding metal area and the area are not electrically connected with each other; the metal circuit further comprises a shielding metal area, the shielding metal area and the grounding metal area are located on two sides of the balanced feed connecting line, a gap is formed between the balanced feed connecting line and the shielding metal area and are not electrically connected with each other, the balanced feed connecting line comprises a first balanced feed connecting line, a second balanced feed connecting line and a third balanced feed connecting line, one end of the first balanced feed connecting line is connected with the second antenna oscillator interface, the other end of the first balanced feed connecting line is connected with one end of the second balanced feed connecting line, the other end of the second balanced feed connecting line is connected with the first antenna oscillator interface, the line width of the first balanced feed connecting line is larger than that of the second balanced feed connecting line, the first balanced feed connecting line is in a snake-shaped curve, the second balanced feed connecting line is in a snake-shaped curve shape, the third balanced feed connecting line is connected with a long handle line segment of the first balanced feed connecting line, and the third balanced feed connecting line is in a rectangular bulge.
The circuit board can realize balanced unbalanced conversion, in order to enhance the impedance matching effect, the balanced feed connection adopts different line width design, the wiring of the balanced feed connection reduces the areas of a required substrate and a metal circuit printed on the substrate, the small-size requirement of the circuit board is met, the shielding effect can be increased, the impedance of the third balanced feed connection can be adjusted, and the high-frequency gain is improved.
Furthermore, two antenna element interfaces are arranged above the substrate, the coaxial cable interface is positioned between the two antenna element interfaces, and the first antenna element interface is connected with the coaxial cable interface through a section of horizontal connecting line.
Furthermore, in order to reduce the signal transmission loss, the turning angles of the first balanced feed line and the second balanced feed line are both arc-shaped.
Furthermore, the second balanced feed line comprises two S-shaped curves and a half S-shaped curve, and the two S-shaped curves and the half S-shaped curve are connected in sequence.
The utility model also provides an antenna, the antenna includes above-mentioned antenna element circuit board.
The utility model provides an antenna oscillator circuit board has realized balanced unbalanced signal conversion, adopts the monolithic circuit board to realize the balun function, has good shielding effect, matches effectually, and the low-loss improves the high frequency gain, can realize matching than wide bandwidth, realizes the balanced and impedance matching of the current amplitude of two antenna oscillator interfaces on the wide band.
Drawings
Fig. 1 is a structural diagram of an antenna element circuit board according to an embodiment of the present invention;
fig. 2 is a block diagram of a second balanced feed connection of the antenna element circuit board of fig. 1.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 shows an antenna element circuit board which can be used for UHF band antennas as a balun.
As shown in fig. 1, the antenna element circuit board includes a substrate 1 and a metal circuit printed on an upper layer of the substrate 1, and a bottom layer of the substrate 1 is a non-metal bottom layer. The metal circuit comprises two antenna element interfaces which are arranged above the substrate 1 and are called as an antenna element interface I21 and an antenna element interface II 22, and further comprises a balance feed connecting line 3 connected between the antenna element interface I21 and the antenna element interface II 22, the metal circuit further comprises a grounding metal area 4 surrounded by the balance feed connecting line 3, a shielding metal area 5 and a coaxial cable interface 6, gaps are arranged between the grounding metal area 4 and the shielding metal area 5 and the balance feed connecting line 3 and are not electrically connected with each other, and the shielding metal area 5 and the grounding metal area 4 are located on two sides of the balance feed connecting line 3. The grounding metal area 4 is internally provided with an area for accommodating a coaxial cable interface 6, the coaxial cable interface 6 and the area are not electrically connected with each other, the coaxial cable interface 6 is positioned between two antenna element interfaces 21 and 22, and the antenna element interface I21 is connected with the coaxial cable interface 6 through a section of horizontal connecting wire 7.
The balanced feed connecting line 3 comprises a first balanced feed connecting line 31, a second balanced feed connecting line 32 and a third balanced feed connecting line 33, one end of the first balanced feed connecting line 31 is connected with the second antenna element interface 22, the other end of the first balanced feed connecting line 31 is connected with one end of the second balanced feed connecting line 32, and the other end of the second balanced feed connecting line 32 is connected with the first antenna element interface 21.
The line width of the first balanced feeding line 31 is greater than the line width of the second balanced feeding line 32, and the turning angles of the first balanced feeding line 31 and the second balanced feeding line 32 are both arc-shaped. The first balanced feed connecting line 31 is spoon-shaped, the third balanced feed connecting line 33 is connected with the long handle line segment of the first balanced feed connecting line 31, the third balanced feed connecting line 33 is a rectangular bulge, and the third balanced feed connecting line 33 can adjust impedance and improve high-frequency gain. The second balanced feed connection 32 is a serpentine, and referring to fig. 2, the second balanced feed connection 32 includes two S- shaped curves 321 and 322 and a half S-shaped curve 323, and the S- shaped curves 321 and 322 and the half S-shaped curve 323 are sequentially connected.
The balanced feed connection 3 and the grounding metal area 4 have close electromagnetic coupling between the edges of the metal conductors, so that high-frequency electromagnetic radiation of the balanced feed connection can be shielded; the shielding metal region 5 can not only isolate the interference of external energy to the signal on the balanced feed line, but also prevent the signal energy on the balanced feed line from radiating outwards, and the double protection function can reduce the signal energy loss.
In fig. 1, two antenna element interfaces 21 and 22 are provided with through holes 8 symmetrically arranged for connecting metal devices of the antenna elements, a coaxial cable interface 6 is connected with a coaxial cable or an "F-head" connector, and a shielding layer of the coaxial cable is connected with a grounding metal area 4.
In fig. 1, the through hole 8 may be subjected to a tin-plating process, and a tin layer may be formed around the through hole 8, and the tin layer may be a dot-shaped tin layer or a circular tin layer.
The circuit board described in this embodiment is used as a balanced unbalanced transformer for an antenna, realizes a balun function, has a small size, greatly reduces the structure and the volume of an antenna oscillator, has a good matching effect and low loss, improves high-frequency gain, and can be used for a UHF-band antenna.
The antenna element circuit board and the antenna provided by the embodiment of the present invention are introduced in detail, and the structure of the present invention is explained by applying a specific example, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, there may be variations in the specific embodiments according to the idea of the present invention, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (5)
1. An antenna oscillator circuit board comprises a substrate and a metal circuit printed on the upper layer of the substrate, wherein the bottom layer of the substrate is a nonmetal bottom layer, the metal circuit comprises two antenna oscillator interfaces, a balanced feed connecting line connected between the two antenna oscillator interfaces, a grounding metal area surrounded by the balanced feed connecting line and a coaxial cable interface, a gap is formed between the balanced feed connecting line and the grounding metal area and is not electrically connected with each other, and the first antenna oscillator interface is connected with the coaxial cable interface through a connecting line; the grounding metal area is internally provided with an area for accommodating a coaxial cable interface, and the grounding metal area and the area are not electrically connected with each other; the metal circuit further comprises a shielding metal area, the shielding metal area and the grounding metal area are located on two sides of the balanced feed connecting line, and gaps are formed between the balanced feed connecting line and the shielding metal area and are not electrically connected with each other.
2. The antenna element circuit board of claim 1, wherein two antenna element interfaces are disposed above the substrate, the coaxial cable interface is located between the two antenna element interfaces, and the first antenna element interface is connected to the coaxial cable interface through a horizontal connecting wire.
3. The antenna element circuit board of claim 1 or 2, wherein the turning angles of the first balanced feed line and the second balanced feed line are both arc-shaped.
4. The antenna element circuit board of claim 3, wherein the second balanced feed connection comprises two S-shaped curves and one half S-shaped curve, and the two S-shaped curves and the half S-shaped curve are connected in sequence.
5. An antenna comprising the antenna element circuit board according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221860614.3U CN218300237U (en) | 2022-07-19 | 2022-07-19 | Antenna element circuit board and antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221860614.3U CN218300237U (en) | 2022-07-19 | 2022-07-19 | Antenna element circuit board and antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218300237U true CN218300237U (en) | 2023-01-13 |
Family
ID=84792342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221860614.3U Active CN218300237U (en) | 2022-07-19 | 2022-07-19 | Antenna element circuit board and antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218300237U (en) |
-
2022
- 2022-07-19 CN CN202221860614.3U patent/CN218300237U/en active Active
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