CN217114799U - Antenna element circuit board and antenna - Google Patents
Antenna element circuit board and antenna Download PDFInfo
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- CN217114799U CN217114799U CN202220428984.3U CN202220428984U CN217114799U CN 217114799 U CN217114799 U CN 217114799U CN 202220428984 U CN202220428984 U CN 202220428984U CN 217114799 U CN217114799 U CN 217114799U
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- feed line
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Abstract
The utility model relates to a signal processing field provides an antenna element circuit board, its structure contains the base plate and prints the metal circuit on the base plate, metal circuit is including two antenna element interfaces that are located the base plate top, connect the balanced feed line between two antenna element interfaces, be located the inboard shielding metal district that just is encircleed by balanced feed line of balanced feed line, be located the ground connection metal district in the balanced feed line outside and be located the coaxial cable interface in ground connection metal district, the balanced feed line of buckling is including consecutive first balanced feed line, second balanced feed line and third balanced feed line, this circuit board size is less and match effectually, the low-loss, can regard as balanced unbalanced transformer, the utility model also provides an antenna.
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
The dipole antenna is a balanced type antenna and the coaxial cable is an unbalanced transmission line, and thus, a balun is added between the antenna and the cable. In the antenna, the antenna element circuit board used as a balun comprises a substrate and a metal circuit printed on the substrate, wherein the metal circuit comprises two antenna element interfaces, a balanced feed connecting line connected between the two antenna element interfaces and a coaxial cable interface, and the coaxial cable interface is connected with one antenna element interface.
The design of the metal circuit is different according to different antenna frequency bands and different circuit board sizes.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an antenna element circuit board that is applicable to VHF frequency channel and matches effectually, low loss is provided, the demand of small-size circuit board can be satisfied. An antenna including the antenna element circuit board is also provided.
The utility model discloses a following technical scheme realizes above-mentioned purpose.
An antenna oscillator circuit board comprises a substrate and a metal circuit printed on the upper layer of the substrate, wherein the substrate bottom layer is a nonmetal bottom layer, the metal circuit comprises an antenna oscillator interface I and an antenna oscillator interface II which are positioned above the substrate, a balanced feed connecting line connected between the antenna oscillator interface I and the antenna oscillator interface II, a shielding metal area positioned on the inner side of the balanced feed connecting line and surrounded by the balanced feed connecting line, a grounding metal area positioned on the outer side of the balanced feed connecting line and a coaxial cable interface positioned in the grounding metal area, gaps are arranged between the balanced feed connecting line and the grounding metal area and between the balanced feed connecting line and the shielding metal area and are not electrically connected with each other, the grounding metal area and the coaxial cable interface 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 which are sequentially connected, and a first balanced feed connecting line is led out from the antenna oscillator interface II downwards, the first balanced feed line is longitudinally bent at multiple positions and arranged in parallel, the second balanced feed line is transversely bent at multiple positions and arranged in parallel, a mechanical hole is formed in the shielding metal area, the second balanced feed line is located above the mechanical hole, the third balanced feed line is located on one side of the first balanced feed line and one side of the second balanced feed line, the multiple positions are transversely bent and arranged in parallel, the third balanced feed line is led out from the first antenna oscillator interface in the horizontal direction, the first antenna oscillator interface and the coaxial cable interface are located on one side of the third balanced feed line, and the coaxial cable interface is located below the first antenna oscillator interface and connected with the first antenna oscillator interface through a connecting line.
The circuit board can realize the balun function of converting a balanced signal into an unbalanced signal, namely, balanced-unbalanced conversion. The grounding metal area and the shielding metal area are both realized in a large-area copper-clad mode, the shielding metal area is in an electrical connection suspension state, the shielding metal area can not only isolate the signal interference of external energy on the balanced feed line, but also prevent the signal energy on the balanced feed line from radiating outwards, and the dual protection function can reduce the signal energy loss. The snakelike balanced feed line design can be bent at multiple positions to realize the arrangement on most areas of the substrate, the areas of the required substrate and a metal circuit printed on the substrate are reduced, the small-size requirement of the circuit board is met, the inductance of the balanced feed line can be increased, and the impedance matching effect is improved. In order to facilitate the connection of the coaxial cable and the antenna oscillator and avoid the interference of the oscillator and the antenna main body mounting structure, the first antenna oscillator interface and the coaxial cable interface are positioned on one side of the third balanced feed connection line, and the coaxial cable interface is positioned below the first antenna oscillator interface.
Furthermore, a connection angle between the coaxial cable interface and the first antenna element interface is a right angle.
Furthermore, in order to improve the matching effect, the first bending width of the first balanced feed line led out from the second antenna element interface is larger than the rest bending widths.
Further, in order to improve the matching effect, the first bending width of the connection between the second balanced feeding line and the third balanced feeding line is larger than the rest bending widths.
Furthermore, in order to improve the matching effect, the first bending width of the third balanced feed line led out from the first antenna element interface is larger than the rest bending widths.
Furthermore, in order to reduce signal transmission loss, the turning angles of the balanced feed connecting line are all arc-shaped.
Furthermore, the two antenna oscillator interfaces are provided with through holes which are symmetrically arranged and used for connecting metal devices of the antenna oscillators.
The utility model also provides an antenna, the antenna includes above-mentioned antenna element circuit board.
The utility model provides an antenna element 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 can be used for the VHF frequency channel, realizes that the current amplitude of two antenna element interfaces is balanced and impedance match on the VHF frequency channel, and circuit board area is less moreover, has reduced antenna element's structure and volume greatly.
Drawings
Fig. 1 is a structural diagram of an antenna element circuit board according to an embodiment of the present invention.
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 VHF band antennas as a balun.
As shown in FIG. 1, an antenna element circuit board has a structure including a substrate 1 and a metal circuit printed on an upper layer of the substrate, where the bottom layer of the substrate 1 is a non-metal bottom layer, the metal circuit includes a first antenna element interface 21 and a second antenna element interface 22 located above the substrate 1, a balanced feed connection line 3 connected between the two antenna element interfaces 21 and 22, a shielding metal region 4 located inside the balanced feed connection line 3 and surrounded by the balanced feed connection line 3, a ground metal region 5 located outside the balanced feed connection line 3, and a coaxial cable interface 6 located in the ground metal region 5, gaps are formed between the balanced feed connection line 3 and the ground metal region 5 and between the balanced feed connection line 3 and the shielding metal region 4, the ground metal region 5 and the coaxial cable interface 6 are not electrically connected to each other, and the balanced feed connection line 3 includes a first balanced feed connection line 31 connected in sequence, The second balanced feed line 32 and the third balanced feed line 33 lead out the first balanced feed line 31 from the second antenna element interface 22, the first balanced feed line 31 is longitudinally bent at a plurality of positions and arranged in parallel, and the width of the first bent part 311 of the first balanced feed line 31 is larger than that of the rest bent parts. The second balanced feed connection line 32 is transversely bent at a plurality of positions and arranged in parallel, a mechanical hole 7 is formed in the shielding metal region at a position close to the center of the substrate 1, the second balanced feed connection line 32 is positioned above the mechanical hole 7, the width of a first bent portion 321 where the second balanced feed connection line 32 is connected with the third balanced feed connection line 33 is larger than the width of the rest bent portions, the third balanced feed connection line 33 is positioned at one side of the first balanced feed connection line 31 and one side of the second balanced feed connection line 32, the plurality of positions are transversely bent and arranged in parallel, the third balanced feed connection line 33 is led out from the antenna element interface I21 along the horizontal direction, and the width of the first bent portion 331 of the third balanced feed connection line 33 led out from the antenna element interface I21 is larger than the width of the rest bent portions. The first antenna element interface 21 and the coaxial cable interface 6 are located on one side of the third balanced feed connection line 33, the coaxial cable interface 6 is located below the first antenna element interface 21, and is connected with the first antenna element interface 21 through the connection line 8, and the connection angle is a right angle.
The shielding metal region 4 can not only isolate the signal interference on the balanced feed line from the external energy, but also prevent the signal energy on the balanced feed line from radiating outwards, and the dual protection function can reduce the signal energy loss. In order to reduce the signal transmission loss, the turning angles of the balanced feed connection line 3 are all arc-shaped.
The two antenna oscillator interfaces 21 and 22 are both processed by covering copper in a large area, through holes 9 are formed in the first antenna oscillator interface 21 and the second antenna oscillator interface 22 and are symmetrically arranged and used for connecting metal devices of the antenna oscillator, the 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 the grounding metal area 5. The antenna oscillator circuit board is accommodated in the oscillator box, and a mechanical hole formed in the center of the substrate 1 is used for mounting the oscillator box.
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, and can be used for a VHF frequency 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 (8)
1. The utility model provides an antenna element circuit board, contains the base plate and prints the metal circuit on the base plate upper strata, and the base plate bottom is the nonmetal bottom, its characterized in that, the metal circuit is including being located antenna element interface one and antenna element interface two of base plate top, connect in balanced feed line between antenna element interface one with antenna element interface two, be located balanced feed line inboard and by the shielding metal district that balanced feed line encircleed, be located the ground connection metal area of balanced feed line outside and be located the coaxial cable interface in the ground connection metal area, balanced feed line with all be equipped with the space and not electric connection each other between ground connection metal area and the shielding metal area, ground connection metal area and coaxial cable interface both are not electric connection each other, balanced feed line is including the first balanced feed line that links gradually, A second balanced feed line and a third balanced feed line, the first balanced feed line is led out from the antenna element interface downwards, a plurality of positions of the first balanced feed line are longitudinally bent and arranged in parallel, a plurality of positions of the second balanced feed line are transversely bent and arranged in parallel, a mechanical hole is arranged in the shielding metal area, the second balanced feed line is positioned above the mechanical hole, the third balanced feed line is positioned at one side of the first balanced feed line and the second balanced feed line, a plurality of positions of the second balanced feed line are transversely bent and arranged in parallel, the third balanced feed line is led out from the antenna element interface I along the horizontal direction, the antenna element interface I and the coaxial cable interface are positioned at one side of the third balanced feed line, and the coaxial cable interface is positioned below the antenna element interface I, and the first antenna element interface is connected with the first antenna element interface through a connecting wire.
2. The antenna element circuit board of claim 1, wherein a connection angle between the coaxial cable interface and the first antenna element interface is a right angle.
3. The antenna element circuit board of claim 1 or 2, wherein a first bending width of the first balanced feed line led out from the second antenna element interface is larger than the rest bending widths.
4. The antenna element circuit board of claim 3, wherein a first bending width of the second balanced feeding line and the third balanced feeding line is larger than the remaining bending widths.
5. The antenna element circuit board of claim 4, wherein a first bending width of the third balanced feed line from the first antenna element interface is larger than the rest bending widths.
6. The antenna element circuit board of claim 5, wherein the turning angles of the balanced feed line are all arc-shaped.
7. The antenna element circuit board of claim 6, wherein the first antenna element interface and the second antenna element interface are symmetrically provided with through holes.
8. An antenna comprising the antenna element circuit board of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220428984.3U CN217114799U (en) | 2022-03-01 | 2022-03-01 | Antenna element circuit board and antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220428984.3U CN217114799U (en) | 2022-03-01 | 2022-03-01 | Antenna element circuit board and antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217114799U true CN217114799U (en) | 2022-08-02 |
Family
ID=82600041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220428984.3U Active CN217114799U (en) | 2022-03-01 | 2022-03-01 | Antenna element circuit board and antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217114799U (en) |
-
2022
- 2022-03-01 CN CN202220428984.3U patent/CN217114799U/en active Active
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