CN211017386U - Microstrip line filtering radiation oscillator, filtering radiation unit and antenna - Google Patents
Microstrip line filtering radiation oscillator, filtering radiation unit and antenna Download PDFInfo
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- CN211017386U CN211017386U CN201921967283.1U CN201921967283U CN211017386U CN 211017386 U CN211017386 U CN 211017386U CN 201921967283 U CN201921967283 U CN 201921967283U CN 211017386 U CN211017386 U CN 211017386U
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Abstract
The utility model relates to a microstrip line filtering radiation oscillator, filtering radiation unit and antenna, microstrip line filtering radiation oscillator, including the base plate, the front of base plate is provided with a plurality of first sheetmetals that are parallel to each other and the interval sets up, and the back of base plate is provided with a plurality of second sheetmetals that are parallel to each other and the interval sets up, and first sheetmetal and second sheetmetal correspond crisscross and couple through the coupling portion of wearing to establish on the base plate, the utility model discloses a microstrip line filtering radiation oscillator has radiation signal and interference suppression's function simultaneously; the filtering radiation unit comprises at least one oscillator, and can be matched with a high-frequency radiation element when in use, so that the aim of simultaneously radiating a high-frequency signal and a low-frequency signal is fulfilled; the utility model discloses an antenna, including at least one as above filtering radiation unit, can transmit low frequency signal and high frequency signal simultaneously, and then effectively improve the integrated level of antenna, reduce the volume of antenna.
Description
Technical Field
The utility model relates to an antenna field, specific microstrip line filtering radiation oscillator, filtering radiation unit and antenna that says so.
Background
With the rapid development of communication, the fifth generation communication has come, and due to the problem of considering operation cost, the 4G +5G mode will become the mainstream trend of communication development. However, in the mixed array of the 4G antenna and the 5G gmassigmimo antenna, the unit radiation unit of the 4G antenna may cause serious interference to the radiation unit of the 5G antenna, which may cause the beam deformation of the massimimomo antenna to affect the coverage and the isolation between systems not to be up to standard.
In order to solve the above problems, a band-stop filter is inserted into an arm of a low-frequency radiating element in the prior art, so that an induced current generated by a high-frequency electromagnetic wave on the low-frequency radiating element is effectively suppressed, and the influence of the low-frequency radiating element on the high-frequency radiating element is greatly reduced. However, a plurality of independent filter structures are generally loaded, and the filter structures are lumped elements, so that discontinuity is introduced on a vibrator arm, the matching of the vibrator is influenced, broadband work is difficult to realize, and the requirement of antenna work is met.
SUMMERY OF THE UTILITY MODEL
In order to solve the oscillator among the prior art and cause the broadband not enough because insert the filter and introduce discontinuity, the utility model aims at providing a microstrip line filtering radiation oscillator.
In order to realize the first purpose, the utility model discloses a concrete scheme be: microstrip line filtering radiation oscillator, including the base plate, the front of base plate is provided with a plurality of first sheetmetals that are parallel to each other and the interval sets up, and the back of base plate is provided with a plurality of second sheetmetals that are parallel to each other and the interval sets up, and first sheetmetal and second sheetmetal correspond crisscross and through the coupling portion coupling of wearing to establish on the base plate.
As a preferable scheme, the first metal sheet and the second metal sheet each include two end edges parallel to each other, the end edges are parallel to the edges of the substrate, the two end edges are connected by two connecting edges, and an included angle between at least one of the two connecting edges and the end edge is an obtuse angle.
Preferably, the first metal sheet and the second metal sheet which are staggered with each other have an end edge which coincides with each other in a normal direction of the substrate.
Based on above-mentioned microstrip line filtering radiation oscillator, the utility model discloses a second purpose provides a filtering radiation unit, can arrange high frequency radiation component when using, realizes radiating high frequency signal and low frequency signal's purpose simultaneously.
In order to achieve the second objective, the present invention adopts the following specific scheme: and the filtering radiation unit comprises at least one oscillator.
As a preferable scheme, the filtering radiation unit includes at least one oscillator pair, the oscillator pair is composed of two oscillators, and the substrates of the two oscillators are integrally connected.
Preferably, the connecting line between the two substrates is parallel to the connecting line between all the first metal sheets.
Preferably, the filtering radiation unit includes two oscillator pairs, and the connection directions of the substrates in the two oscillator pairs are perpendicular to each other.
Based on above-mentioned filtering radiation unit, the utility model discloses a third purpose provides an antenna, and the functional, small, the integrated level is high.
In order to realize the third purpose, the utility model discloses a concrete scheme be: an antenna comprising at least one filtered radiating element as described above.
Preferably, a plurality of high-frequency radiation units are arranged on the periphery side of each filtering radiation unit.
Preferably, four high-frequency radiation units are uniformly distributed along the circumferential direction and are arranged on the circumferential side of each filtering radiation unit.
The antenna element can achieve the following effects: the utility model discloses utilize sheetmetal and the coupling portion that sets up on the base plate to form continuous filtering structure, compare with the current mode of inserting band elimination filter, can obtain bigger bandwidth. The high-frequency current can be maximally inhibited, the interference to the low-frequency current is minimized, and the effects of forward transmission of the low-frequency current, radiation of the low-frequency signal, reverse inhibition of the high-frequency induced current and avoidance of interference of the high-frequency signal are achieved.
The effect that above-mentioned filtering radiation unit can realize does: the filtering radiation unit can be matched with a high-frequency radiation element when in use by means of the characteristic that the composite oscillator conducts low-frequency current and simultaneously inhibits high-frequency current interference, so that the purpose of simultaneously radiating high-frequency signals and low-frequency signals is realized.
The antenna can achieve the following effects: the antenna can simultaneously transmit low-frequency signals and high-frequency signals, so that the integration level of the antenna is effectively improved, and the size of the antenna is reduced.
Drawings
Fig. 1 is a schematic structural diagram of the microstrip line filtering radiation oscillator of the present invention;
FIG. 2 is a side view of the first metal sheet, the coupling portion and the third metal sheet;
fig. 3 is a schematic structural diagram of the filtering radiation unit of the present invention;
fig. 4 is an equivalent circuit diagram of a microstrip line filtering radiation oscillator;
FIG. 5 is a schematic diagram of adjusting various parameters;
FIG. 6 is a graph of simulation results for an antenna;
fig. 7 is a schematic diagram of the parameters.
Description of the drawings: 1-substrate, 2-first metal sheet, 3-coupling part, 4-second metal sheet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the microstrip line filter radiation oscillator includes a substrate 1, a plurality of first metal sheets 2 arranged in parallel and at intervals are disposed on a front surface of the substrate 1, a plurality of second metal sheets 4 arranged in parallel and at intervals are disposed on a back surface of the substrate 1, and the first metal sheets 2 and the second metal sheets 4 are correspondingly staggered and coupled through coupling portions 3 penetrating through the substrate 1.
The first metal piece 2, the coupling part 3 and the second metal piece 4 may be equivalent to an L C parallel resonant circuit, wherein the coupling part 3 is equivalent to C, the first metal piece 2 and the second metal piece 4 are equivalent to L, as shown in fig. 4, and the following conditions are satisfied:
wherein j is an imaginary number, C1And C2L as equivalent capacitance value1Is an equivalent resistance value, fhAt a high frequency of current, flA low frequency current frequency.
At a resonant frequency point, the radiation oscillator circuit is in an open circuit state for an external electric field, the impedance tends to be infinite, and the external electric field cannot generate induced current at the moment. When the frequency is much lower than the resonance frequency, the hollow tube body with the spiral gap is in a state of low inductance and high capacitance, and has little influence on low-frequency radiation and impedance matching.
Further, the first metal sheet 2 and the second metal sheet 4 both include two end edges parallel to each other, the end edges are parallel to the edge of the substrate 1, the two end edges are connected by two connecting edges, and an included angle between at least one of the two connecting edges and the end edge is an obtuse angle. Specifically, the substrate 1 is a rectangular plate, the end edge is parallel to the long side of the substrate 1, the first metal sheet 2 and the second metal sheet 4 can be in a parallelogram shape or a right trapezoid shape, when the parallelogram shape is formed, the two connecting edges are all obtuse angles with the end edge, when the right trapezoid shape is formed, an obtuse angle is formed between one of the connecting edges and the end edge, and a right angle is formed between the other connecting edge and the end edge.
Further, the first metal sheet 2 and the second metal sheet 4 which are staggered with each other have one coincident end edge in the normal direction of the base plate 1.
At a high frequency current frequency fhUnder the condition (f), the radiation oscillator is open-circuited at a low-frequency current frequency flThe radiating element appears as a short circuit. As shown in fig. 7, on this basis, it is defined that a distance between two end edges of the radiation oscillator is d, a thickness of the substrate 1 is h, a distance between the two first metal sheets 2 and a distance between the two second metal sheets 4 are g, and a sum of lengths of the end edges of the first metal sheets 2 and the second metal sheets 4 arranged in a parallelogram and g is w, and by adjusting w, g and d, it is possible to maximize suppression of a high-frequency current and minimize interference with a low-frequency current, and to achieve an effect of reversely suppressing a high-frequency induced current while transmitting a low-frequency current in a forward direction and radiating a low-frequency signal. Also, since the widths of the first metal piece 2 and the second metal piece 4 arranged in a parallelogram are fixed and the coupling part 3 is connected between the overlapped portions of the first metal piece 2 and the second metal piece 4, the width of the coupling part 3 is equal to that of the first metal piece 2 and the second metal piece 4, and thus the radiation vibrator is uniformly continuous in the effective action region, thereby ensuring that the radiation vibrator can obtain a sufficient bandwidth. Further, the relationship between the parameters is: g and C1Proportional ratio, when g increases, the resonance frequency point of the equivalent circuit increases, as shown in fig. 5, in the figure, the abscissa is frequency, the ordinate is induced current intensity on the surface of the radiation oscillator, and blackThe color line shows the induced current of the surface of the circular tube without the spiral slit, and the graph shows that the resonance frequency point changes about 0.2GHz when g changes by 0.5mm, and L along with the increase of d1And C1Increases and thus shifts the resonance point towards the low frequency, L as w increases1Decrease of C1Slightly larger, the resonance point moves in the high frequency direction.
In addition, it should be noted that when adjusting w, g, and d, the requirement of the whole antenna needs to be met, or the antenna needs to be adaptively adjusted to ensure smooth installation.
In the present embodiment, the substrate 1 is configured as a PCB board, the first metal sheet 2 and the second metal sheet 4 are both printed on the surface of the substrate 1, and the coupling portion 3 can be processed by a processing technology of metallized via holes.
Referring to fig. 3, based on the above-mentioned radiation oscillator, the present invention further provides a filtering radiation unit, which includes at least one of the above-mentioned radiation oscillators. By means of the characteristic that the radiation oscillator can radiate low-frequency signals and cannot interfere with nearby high-frequency signals, the filtering radiation unit can be used in combination with the high-frequency radiation unit, and the purposes that the high-frequency signals and the low-frequency signals are radiated at the same time and do not interfere with each other are achieved.
Furthermore, the filtering radiation unit comprises at least one oscillator pair, the oscillator pair comprises two oscillators, and the substrates 1 of the two oscillators are integrally connected.
The substrates 1 of the two radiation oscillators are integrally connected, i.e. the two radiation oscillators are actually located on the same substrate 1, thereby simplifying the production process and reducing the production cost.
Further, the connecting lines between the two substrates 1 are parallel to the connecting lines between all the first metal sheets 2. In this case, one pair of elements is used to radiate a low frequency signal of one polarization direction.
Further, the filtering radiation unit comprises two oscillator pairs, and the connection directions of the substrates 1 in the two oscillator pairs are perpendicular to each other. The two oscillator pairs are respectively used for radiating low-frequency signals in two polarization directions, and the low-frequency signals in the two polarization directions are in an orthogonal state, so that a dual-polarization radiation function is realized.
Based on above-mentioned filtering radiation unit, the utility model discloses further provide an antenna, including at least one as above filtering radiation unit.
Furthermore, a plurality of high-frequency radiation units are arranged on the periphery of each filtering radiation unit.
The high-frequency radiation unit is used for radiating high-frequency signals, and the filtering radiation unit can be used for conducting low-frequency current to radiate low-frequency signals and simultaneously inhibiting the high-frequency current, so that the high-frequency signals are prevented from being interfered by the low-frequency signals, the low-frequency signals and the high-frequency signals can be transmitted by the combination, the integration level of the antenna is effectively improved, and the size of the antenna is reduced. For example, a low-frequency 4G signal is transmitted by the filtering radiation unit, and a high-frequency 5G signal is transmitted by the high-frequency radiation unit 3.
Furthermore, four high-frequency radiation units which are uniformly distributed along the circumferential direction are arranged on the circumferential side of each filtering radiation unit.
All the filtering radiation unit arrays form a low-frequency antenna, and all the high-frequency radiation unit arrays form a high-frequency antenna, for example, the low-frequency antenna can be applied as an FDD antenna, and the high-frequency antenna can be applied as a TDD antenna, so that the influence of the FDD antenna on the TDD antenna beam can be effectively weakened, the beam coverage index of the TDD antenna is met, and meanwhile, the port isolation index is greatly improved to realize the FDD + TDD antenna. Fig. 6 is a simulation result diagram of the antenna, in which the leftmost column is a high-frequency 2D electric field when no low-frequency oscillator exists, the middle column is a high-frequency 2D electric field when a normal low-frequency oscillator exists, and the rightmost column is a high-frequency 2D electric field obtained by replacing the normal low-frequency oscillator with a filtering radiation unit. After the microstrip line filtering radiation oscillator is adopted, the directional diagram of the antenna is greatly improved, the antenna beam coverage index can be met, and meanwhile, the port isolation is improved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. Microstrip line filtering radiation oscillator, its characterized in that: the metal plate comprises a substrate (1), wherein a plurality of first metal sheets (2) which are parallel to each other and arranged at intervals are arranged on the front surface of the substrate (1), a plurality of second metal sheets (4) which are parallel to each other and arranged at intervals are arranged on the back surface of the substrate (1), and the first metal sheets (2) and the second metal sheets (4) are correspondingly staggered and coupled through coupling parts (3) arranged on the substrate (1) in a penetrating mode.
2. The microstrip line filtered radiation vibrator of claim 1, wherein: the first metal sheet (2) and the second metal sheet (4) comprise two end edges which are parallel to each other, the end edges are parallel to the edge of the substrate (1), the two end edges are connected through two connecting edges, and an included angle between at least one of the two connecting edges and the end edge is an obtuse angle.
3. The microstrip line filtered radiation vibrator of claim 2, wherein: the first metal sheet (2) and the second metal sheet (4) which are staggered with each other in the normal direction of the substrate (1) have one coincident end edge.
4. A filtered radiation element, characterized by: comprising at least one transducer according to claim 1.
5. The filtered radiation element of claim 4, wherein: the filtering radiation unit comprises at least one oscillator pair, the oscillator pair comprises two oscillators, and the two oscillators are integrally connected with the substrate (1).
6. The filtered radiation element of claim 5, wherein: the connecting line between the two substrates (1) is parallel to the connecting line between all the first metal sheets (2).
7. The filtered radiation element of claim 6, wherein: the filtering radiation unit comprises two oscillator pairs, and the connection directions of the two oscillator pairs and the substrate (1) are mutually vertical.
8. An antenna, characterized in that: comprising at least one filtered radiating element according to claim 7.
9. The antenna of claim 8, wherein: and a plurality of high-frequency radiation units are arranged on the periphery of each filtering radiation unit.
10. The antenna of claim 9, wherein: four high-frequency radiation units which are uniformly distributed along the circumferential direction are arranged on the circumferential side of each filtering radiation unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921967283.1U CN211017386U (en) | 2019-11-14 | 2019-11-14 | Microstrip line filtering radiation oscillator, filtering radiation unit and antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921967283.1U CN211017386U (en) | 2019-11-14 | 2019-11-14 | Microstrip line filtering radiation oscillator, filtering radiation unit and antenna |
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| CN211017386U true CN211017386U (en) | 2020-07-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112290199A (en) * | 2020-09-29 | 2021-01-29 | 京信通信技术(广州)有限公司 | Antenna and low-frequency radiation unit and isolation strip thereof |
| CN112768936A (en) * | 2020-12-30 | 2021-05-07 | 深圳市信丰伟业科技有限公司 | Discrete 5G antenna isolation system |
-
2019
- 2019-11-14 CN CN201921967283.1U patent/CN211017386U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112290199A (en) * | 2020-09-29 | 2021-01-29 | 京信通信技术(广州)有限公司 | Antenna and low-frequency radiation unit and isolation strip thereof |
| CN112768936A (en) * | 2020-12-30 | 2021-05-07 | 深圳市信丰伟业科技有限公司 | Discrete 5G antenna isolation system |
| CN112768936B (en) * | 2020-12-30 | 2024-03-29 | 深圳市信丰伟业科技有限公司 | Discrete 5G antenna isolation system |
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